/* ============================================
   SignFlow - Digital Signage SaaS Website
   Modern, Clean, High-End Design
   ============================================ */

/* CSS Custom Properties */
:root {
    /* Colors - Soft, Premium Palette */
    --color-bg: #FAFAF9;
    --color-bg-alt: #F5F5F4;
    --color-surface: #FFFFFF;
    --color-surface-elevated: #FFFFFF;

    --color-text-primary: #1C1917;
    --color-text-secondary: #57534E;
    --color-text-tertiary: #78716C;
    --color-text-muted: #A8A29E;

    --color-accent: #0D9488;
    --color-accent-light: #14B8A6;
    --color-accent-dark: #0F766E;

    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-error: #EF4444;

    /* Soft Feature Colors */
    --color-rose: #FDA4AF;
    --color-rose-soft: #FFE4E6;
    --color-violet: #A78BFA;
    --color-violet-soft: #EDE9FE;
    --color-amber: #FCD34D;
    --color-amber-soft: #FEF3C7;
    --color-emerald: #6EE7B7;
    --color-emerald-soft: #D1FAE5;
    --color-sky: #7DD3FC;
    --color-sky-soft: #E0F2FE;

    /* Typography */
    --font-display: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;

    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    --text-7xl: 4.5rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-3xl: 2rem;
    --radius-full: 9999px;

    /* Shadows - Soft, Premium */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -4px rgba(0, 0, 0, 0.03);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.03);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.08);
    --shadow-glow: 0 0 40px -10px rgba(13, 148, 136, 0.3);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Layout */
    --container-max: 1280px;
    --container-padding: 1.5rem;
}

/* Reset & Base */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

img,
svg {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul,
ol {
    list-style: none;
}

/* Utility Classes */
.section-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto var(--space-16);
}

.section-tag {
    display: inline-block;
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: var(--space-4);
}

.section-title {
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    font-weight: 600;
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-full);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-text-primary) 0%, #444 100%);
    color: var(--color-surface);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #444 0%, var(--color-text-primary) 100%);
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

/* Shine Effect for Buttons */
.btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: 0.5s;
    pointer-events: none;
}

.btn:hover::after {
    left: 100%;
}

.btn-secondary {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 12px rgba(13, 148, 136, 0.2);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-accent) 100%);
    border-color: transparent;
    transform: translateY(-2px) scale(1.02);
    color: white;
    box-shadow: 0 8px 24px rgba(13, 148, 136, 0.4);
}

.btn-ghost {
    background-color: transparent;
    color: var(--color-text-primary);
    border: 1px solid var(--color-text-muted);
}

.btn-ghost:hover {
    background-color: var(--color-bg-alt);
    border-color: var(--color-text-secondary);
}

.btn-large {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-base);
}

/* ============================================
   Announcement Bar
   ============================================ */
.announcement-bar {
    background: linear-gradient(135deg, var(--color-rose-soft) 0%, var(--color-violet-soft) 100%);
    padding: var(--space-3) 0;
    position: relative;
    z-index: 100;
}

.announcement-content {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
}

.announcement-content span {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-primary);
}

.announcement-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.announcement-close:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--color-text-primary);
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: sticky;
    top: 0;
    background-color: transparent;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 99;
    background-color: rgba(250, 250, 249, 0.8);
    /* Default layout */
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-4) var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-8);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text-primary);
}



.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

.nav-link:hover {
    color: var(--color-text-primary);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 6px;
    font-size: 10px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-accent) 0%, #14b8a6 100%);
    color: white;
    border-radius: 6px;
    margin-left: 6px;
    vertical-align: middle;
    line-height: 1;
    box-shadow: 0 2px 4px rgba(13, 148, 136, 0.2);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

/* Language Selector */
.language-selector {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    background-color: var(--color-bg-alt);
    border-radius: var(--radius-full);
    padding: 4px;
}

.lang-btn {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-text-secondary);
    background: transparent;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-btn:hover {
    color: var(--color-text-primary);
}

.lang-btn.active {
    background-color: var(--color-surface);
    color: var(--color-accent);
    box-shadow: var(--shadow-sm);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    padding: var(--space-2);
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text-primary);
    transition: all var(--transition-base);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-16) var(--container-padding);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.dot-grid {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, var(--color-text-muted) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.3;
    mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin-bottom: var(--space-16);
}

.hero-title {
    font-family: var(--font-display);
    font-size: var(--text-6xl);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-6);
}

.title-line {
    display: block;
}

.title-line.highlight {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--text-xl);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-8);
    line-height: 1.7;
}

.hero-ctas {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

/* Hero Visual - Dashboard Mockup */
.hero-visual {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 1000px;
}

.dashboard-mockup {
    position: relative;
}

.laptop-frame {
    background: linear-gradient(145deg, #292524 0%, #1C1917 100%);
    border-radius: var(--radius-2xl);
    padding: var(--space-3);
    box-shadow: var(--shadow-2xl), 0 0 0 1px rgba(255, 255, 255, 0.1) inset;
}

.laptop-screen {
    background-color: var(--color-surface);
    border-radius: var(--radius-xl);
    overflow: hidden;
    aspect-ratio: 16/10;
}

.dashboard-ui {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.dashboard-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-6);
    border-bottom: 1px solid var(--color-bg-alt);
}

.dashboard-logo {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: var(--text-lg);
    color: var(--color-text-primary);
}

.dashboard-nav {
    display: flex;
    gap: var(--space-4);
}

.dashboard-nav span {
    width: 60px;
    height: 8px;
    background-color: var(--color-bg-alt);
    border-radius: var(--radius-full);
}

.dashboard-nav span:nth-child(2) {
    width: 40px;
}

.dashboard-content {
    flex: 1;
    display: flex;
}

.sidebar {
    width: 60px;
    background-color: var(--color-bg);
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.sidebar-item {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    background-color: var(--color-bg-alt);
}

.sidebar-item.active {
    background-color: var(--color-accent);
}

.main-content {
    flex: 1;
    padding: var(--space-6);
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-6);
}

.header-title {
    width: 150px;
    height: 24px;
    background-color: var(--color-text-primary);
    border-radius: var(--radius-md);
}

.header-action {
    width: 100px;
    height: 32px;
    background-color: var(--color-accent);
    border-radius: var(--radius-full);
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

.grid-card {
    aspect-ratio: 16/10;
    background: linear-gradient(135deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

/* Floating Screens */
.floating-screens {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    pointer-events: none;
}

.screen {
    position: absolute;
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    padding: var(--space-3);
    animation: float 6s ease-in-out infinite;
}

.screen-1 {
    top: 10%;
    left: -5%;
    width: 180px;
    animation-delay: 0s;
}

.screen-2 {
    bottom: 10%;
    right: -5%;
    width: 160px;
    animation-delay: -3s;
}

.screen-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.screen-image {
    aspect-ratio: 16/10;
    background: linear-gradient(135deg, var(--color-rose-soft) 0%, var(--color-violet-soft) 100%);
    border-radius: var(--radius-md);
}

.screen-image.alt {
    background: linear-gradient(135deg, var(--color-emerald-soft) 0%, var(--color-sky-soft) 100%);
}

.screen-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.screen-line {
    height: 8px;
    background-color: var(--color-bg-alt);
    border-radius: var(--radius-full);
    width: 100%;
}

.screen-line.short {
    width: 60%;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-20px);
    }
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
}

.scroll-mouse {
    width: 26px;
    height: 40px;
    border: 2px solid var(--color-text-muted);
    border-radius: var(--radius-full);
    position: relative;
}

.scroll-wheel {
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background-color: var(--color-text-muted);
    border-radius: var(--radius-full);
    animation: scroll-wheel 2s ease-in-out infinite;
}

@keyframes scroll-wheel {

    0%,
    100% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }

    50% {
        opacity: 0.3;
        transform: translateX(-50%) translateY(8px);
    }
}

/* ============================================
   How It Works Section
   ============================================ */
.how-it-works {
    padding: var(--space-32) 0;
    background-color: var(--color-surface);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.step-card {
    position: relative;
    padding: var(--space-8);
    background: linear-gradient(145deg, var(--color-bg) 0%, var(--color-surface) 100%);
    border-radius: var(--radius-2xl);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: all var(--transition-base);
}

.step-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.step-number {
    position: absolute;
    top: var(--space-6);
    right: var(--space-6);
    font-family: var(--font-display);
    font-size: var(--text-5xl);
    font-weight: 800;
    color: var(--color-text-muted);
    opacity: 0.2;
}

.step-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    color: white;
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-6);
}

.step-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-3);
}

.step-description {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* Process Flow Connectors */
.step-card:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 50%;
    right: calc(var(--space-8) * -0.8);
    width: var(--space-6);
    height: 2px;
    background-image: linear-gradient(to right, var(--color-text-tertiary) 50%, transparent 50%);
    background-size: 8px 2px;
    background-repeat: repeat-x;
    transform: translateY(-50%);
    z-index: 1;
    opacity: 0.4;
}

.step-card:not(:last-child)::before {
    content: '';
    position: absolute;
    top: 50%;
    right: calc(var(--space-8) * -0.9);
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--color-text-tertiary);
    border-top: 2px solid var(--color-text-tertiary);
    transform: translateY(-50%) rotate(45deg);
    z-index: 1;
    opacity: 0.4;
}

@media (max-width: 1024px) {

    .step-card::after,
    .step-card::before {
        display: none;
    }
}

/* ============================================
   Features Section
   ============================================ */
.features {
    padding-top: var(--space-32);
    padding-bottom: var(--space-12);
    background-color: var(--color-bg);
}

.hardware-section {
    padding-top: var(--space-12);
    padding-bottom: var(--space-32);
    background-color: var(--color-bg);
    /* Match previous section for seamless flow */
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.feature-card {
    background-color: var(--color-surface);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-card.large {
    grid-column: span 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
    align-items: center;
}

.feature-card.highlight {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    color: white;
}

.feature-card.highlight .feature-title,
.feature-card.highlight .feature-description {
    color: white;
}

.feature-card.highlight .feature-icon {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
}

.feature-badge-pill {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    background-color: rgba(13, 148, 136, 0.1);
    border: 1px solid rgba(13, 148, 136, 0.2);
    border-radius: var(--radius-full);
    padding: var(--space-2) var(--space-4);
    margin-bottom: var(--space-5);
}

.live-dot {
    width: 8px;
    height: 8px;
    background-color: var(--color-accent);
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
    box-shadow: 0 0 0 0 rgba(13, 148, 136, 0.4);
}

@keyframes pulse-dot {

    0%,
    100% {
        opacity: 1;
        box-shadow: 0 0 0 0 rgba(13, 148, 136, 0.4);
    }

    50% {
        opacity: 0.6;
        box-shadow: 0 0 0 8px rgba(13, 148, 136, 0);
    }
}

.badge-text {
    font-size: var(--text-xs);
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--color-accent-dark);
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg);
    color: var(--color-accent);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-5);
}

.feature-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-3);
}

.feature-description {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.feature-badge {
    display: inline-block;
    margin-top: var(--space-4);
    padding: var(--space-2) var(--space-4);
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
}

/* ============================================
   Hardware Compatibility Section
   ============================================ */
.hardware-section {
    position: relative;
    padding: var(--space-24) 0;
    background: radial-gradient(circle at top right, rgba(240, 249, 255, 0.5), transparent),
        radial-gradient(circle at bottom left, rgba(236, 254, 255, 0.5), transparent),
        #ffffff;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    overflow: hidden;
}

.hardware-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.4'/%3E%3C/svg%3E");
    opacity: 0.05;
    pointer-events: none;
    z-index: 0;
}

.section-container {
    position: relative;
    z-index: 1;
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-8);
    max-width: 1000px;
    margin: 0 auto;
}

.platform-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-6);
    background-color: var(--color-bg);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: all var(--transition-base);
}

.platform-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}

.platform-icon {
    width: 64px;
    height: 64px;
    margin-bottom: var(--space-4);
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.platform-icon svg {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* Adjust Samsung Logo Size */
.platform-card:nth-child(2) .platform-icon svg {
    transform: scale(1.2);
}

.platform-name {
    font-weight: 600;
    color: var(--color-text-secondary);
    font-size: var(--text-lg);
}

@media (max-width: 768px) {
    .platforms-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mini Dashboard Visual */
.feature-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.mini-dashboard {
    width: 100%;
    max-width: 280px;
    background-color: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.mini-header {
    display: flex;
    gap: var(--space-2);
    padding: var(--space-4);
    background-color: var(--color-bg);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.mini-dot {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
}

.mini-dot.red {
    background-color: var(--color-rose);
}

.mini-dot.yellow {
    background-color: var(--color-amber);
}

.mini-dot.green {
    background-color: var(--color-emerald);
}

.mini-content {
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.mini-row {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.mini-status {
    width: 10px;
    height: 10px;
    border-radius: var(--radius-full);
}

.mini-status.online {
    background-color: var(--color-success);
}

.mini-status.offline {
    background-color: var(--color-error);
}

.mini-bar {
    height: 8px;
    background-color: var(--color-bg-alt);
    border-radius: var(--radius-full);
    flex: 1;
}

.mini-bar.short {
    flex: 0.5;
}

/* ============================================
   Use Cases Section
   ============================================ */
.use-cases {
    padding: var(--space-32) 0;
    background-color: var(--color-surface);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.use-case-card {
    background-color: var(--color-bg);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: all var(--transition-base);
}

.use-case-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.use-case-card:nth-child(4) {
    grid-column: span 1;
}

.use-case-card:nth-child(5) {
    grid-column: span 1;
}

.use-case-image {
    aspect-ratio: 16/10;
    overflow: hidden;
}

.image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-primary);
    overflow: hidden;
}

.use-case-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.image-placeholder.retail {
    background: #F0F9FE;
}

.image-placeholder.restaurant {
    background: #F0FBF8;
}

.image-placeholder.mall {
    background: #F8F6FE;
}

.image-placeholder.corporate {
    background: #F2FBFA;
}

.image-placeholder.gym {
    background: #FEFCF3;
}

.use-case-content {
    padding: var(--space-6);
}

.use-case-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-3);
}

.use-case-description {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-4);
}

.use-case-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.use-case-features li {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    padding-left: var(--space-5);
    position: relative;
}

.use-case-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background-color: var(--color-accent);
    border-radius: var(--radius-full);
}

/* ============================================
   Why Choose Us Section
   ============================================ */
.why-us {
    padding: var(--space-32) 0;
    background-color: var(--color-bg);
}

.why-us-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

.why-us-content .section-title {
    text-align: left;
}

.why-us-content .section-subtitle {
    text-align: left;
    margin-bottom: var(--space-8);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--color-accent);
    margin-bottom: var(--space-2);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    font-weight: 500;
}

.why-us-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

.benefit-card {
    background-color: var(--color-surface);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: all var(--transition-base);
}

.benefit-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.benefit-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-accent-soft, var(--color-emerald-soft)) 0%, var(--color-sky-soft) 100%);
    color: var(--color-accent);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
}

.benefit-title {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

.benefit-description {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
    position: relative;
    padding: var(--space-32) var(--container-padding);
    background-color: var(--color-text-primary);
    overflow: hidden;
}

.cta-background {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: var(--color-accent);
    top: -100px;
    left: -100px;
}

.orb-2 {
    width: 300px;
    height: 300px;
    background: var(--color-violet);
    bottom: -50px;
    right: -50px;
}

.cta-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.cta-title {
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    font-weight: 700;
    color: white;
    margin-bottom: var(--space-4);
    line-height: 1.2;
}

.cta-subtitle {
    font-size: var(--text-lg);
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--space-8);
}

.cta-form {
    display: flex;
    gap: var(--space-3);
    max-width: 480px;
    margin: 0 auto var(--space-4);
}

.cta-input {
    flex: 1;
    padding: var(--space-4) var(--space-6);
    font-size: var(--text-base);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    outline: none;
    transition: all var(--transition-base);
}

.cta-input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.cta-input:focus {
    border-color: var(--color-accent);
    background-color: rgba(255, 255, 255, 0.15);
}

/* Enhanced CTA Button */
/* CTA Button sizing and color */
.cta-actions .btn-primary {
    padding: var(--space-4) var(--space-10);
    font-size: var(--text-lg);
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 12px rgba(13, 148, 136, 0.3);
}

.cta-actions .btn-primary:hover {
    background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-accent) 100%);
    box-shadow: 0 8px 24px rgba(13, 148, 136, 0.5);
}


.cta-note {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.5);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background-color: var(--color-bg-alt);
    padding: var(--space-16) 0 var(--space-8);
}

.footer-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.footer-main {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: var(--space-16);
    margin-bottom: var(--space-12);
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
}



.footer-tagline {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
    line-height: 1.6;
}

.social-links {
    display: flex;
    gap: var(--space-3);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-surface);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background-color: var(--color-accent);
    color: white;
    transform: translateY(-2px);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-8);
}

.footer-column h4 {
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--color-text-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-4);
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-column a {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.footer-column a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    padding-top: var(--space-8);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    text-align: center;
}

.footer-bottom p {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    :root {
        --text-6xl: 3rem;
        --text-5xl: 2.5rem;
        --text-4xl: 2rem;
    }

    .nav-links {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .hero-title {
        font-size: var(--text-5xl);
    }

    .steps-grid {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .feature-card.large {
        grid-column: span 2;
    }

    .use-cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .why-us-grid {
        grid-template-columns: 1fr;
        gap: var(--space-12);
    }

    .why-us-content .section-title,
    .why-us-content .section-subtitle {
        text-align: center;
    }

    .footer-main {
        grid-template-columns: 1fr;
        gap: var(--space-12);
    }

    .footer-brand {
        max-width: 100%;
        text-align: center;
    }

    .footer-logo {
        justify-content: center;
    }

    .social-links {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
        --text-6xl: 2.5rem;
        --text-5xl: 2rem;
        --text-4xl: 1.75rem;
    }

    .hero {
        padding: var(--space-12) var(--container-padding);
        min-height: auto;
    }

    .hero-title {
        font-size: var(--text-6xl);
    }

    .hero-subtitle {
        font-size: var(--text-lg);
    }

    .hero-ctas {
        flex-direction: column;
        width: 100%;
    }

    .hero-ctas .btn {
        width: 100%;
    }

    .floating-screens {
        display: none;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .feature-card.large {
        grid-column: span 1;
        grid-template-columns: 1fr;
    }

    .use-cases-grid {
        grid-template-columns: 1fr;
    }

    .use-case-card:nth-child(4),
    .use-case-card:nth-child(5) {
        grid-column: span 1;
    }

    .why-us-cards {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }

    .cta-form {
        flex-direction: column;
    }

    .cta-title {
        font-size: var(--text-3xl);
    }

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .announcement-content {
        padding: 0 var(--space-4);
    }

    .announcement-content span {
        font-size: var(--text-xs);
    }

    .section-title {
        font-size: var(--text-3xl);
    }

    .step-card {
        padding: var(--space-6);
    }

    .feature-card {
        padding: var(--space-6);
    }

    .footer-links {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

/* ============================================
   Modal
   ============================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: var(--color-surface);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    width: 100%;
    max-width: 500px;
    position: relative;
    box-shadow: var(--shadow-2xl);
    transform: translateY(20px);
    transition: all var(--transition-base);
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--color-text-primary);
}

.modal-header {
    text-align: center;
    margin-bottom: var(--space-6);
}

.modal-title {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

.modal-subtitle {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.modal-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-group label {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
}

.form-group .required {
    color: var(--color-error);
}

.form-group input,
.form-group textarea {
    padding: var(--space-3) var(--space-4);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--color-text-primary);
    background-color: var(--color-bg);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    background-color: var(--color-surface);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.1);
}

.btn-full {
    width: 100%;
}

/* ============================================
   Blog Sections
   ============================================ */
.blog-hero {
    padding: var(--space-20) 0 var(--space-12);
    text-align: center;
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}

.featured-post-section {
    padding-bottom: var(--space-16);
    background-color: var(--color-bg);
}

.featured-card {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-8);
    background-color: var(--color-surface);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    transition: all var(--transition-base);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.featured-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2xl);
}

.featured-image {
    background: linear-gradient(135deg, var(--color-sky-soft) 0%, var(--color-violet-soft) 100%);
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-primary);
}

.featured-content {
    padding: var(--space-10);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.blog-tag {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background-color: var(--color-accent-soft, var(--color-emerald-soft));
    color: var(--color-accent-dark, var(--color-emerald));
    /* Fallback handling */
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-4);
    width: fit-content;
}

.featured-title {
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--space-4);
    color: var(--color-text-primary);
}

.featured-excerpt {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-6);
}

.article-meta {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    font-weight: 500;
}

.separator {
    color: var(--color-text-muted);
}

/* Blog Grid */
.blog-posts {
    padding: var(--space-16) 0 var(--space-32);
    background-color: var(--color-surface);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.blog-card {
    display: flex;
    flex-direction: column;
    background-color: var(--color-bg);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.blog-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.card-image {
    aspect-ratio: 16/10;
    background-color: var(--color-bg-alt);
}

.card-content {
    padding: var(--space-6);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--space-3);
    color: var(--color-text-primary);
}

.card-excerpt {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-6);
    flex: 1;
}



/* Article Details Page */
.article-header {
    padding: var(--space-12) 0 var(--space-8);
    background-color: var(--color-bg);
    text-align: center;
}

.back-link {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-8);
    transition: color var(--transition-fast);
}

.back-link:hover {
    color: var(--color-accent);
}

.article-title {
    font-family: var(--font-display);
    font-size: var(--text-5xl);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-4);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    color: var(--color-text-primary);
}

.article-subtitle {
    font-size: var(--text-xl);
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto var(--space-8);
    line-height: 1.6;
}

.article-meta.large {
    justify-content: center;
    padding-bottom: var(--space-4);
}

.author-info {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.author-avatar {
    width: 40px;
    height: 40px;
    background-color: var(--color-accent);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--text-sm);
}

.author-details {
    display: flex;
    flex-direction: column;
    text-align: left;
    line-height: 1.2;
}

.author-name {
    font-weight: 700;
    color: var(--color-text-primary);
}

.author-role {
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
}

.article-image-container {
    background-color: var(--color-bg);
    padding-bottom: var(--space-12);
}

.article-hero-image {
    aspect-ratio: 21/9;
    background: linear-gradient(135deg, var(--color-sky-soft) 0%, var(--color-violet-soft) 100%);
    border-radius: var(--radius-2xl);
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-primary);
}

.article-content {
    background-color: var(--color-surface);
    padding: var(--space-16) 0;
}

.content-container {
    max-width: 760px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.introduction {
    font-size: var(--text-xl);
    line-height: 1.7;
    color: var(--color-text-primary);
    margin-bottom: var(--space-10);
}

.article-content h2 {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: 700;
    margin: var(--space-12) 0 var(--space-6);
    color: var(--color-text-primary);
}

.article-content h3 {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    margin: var(--space-8) 0 var(--space-4);
    color: var(--color-text-primary);
}

.article-content p {
    font-size: var(--text-lg);
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
}

.article-content ul {
    list-style: disc;
    padding-left: var(--space-6);
    margin-bottom: var(--space-8);
}

.article-content li {
    font-size: var(--text-lg);
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-3);
    padding-left: var(--space-2);
}

blockquote {
    border-left: 4px solid var(--color-accent);
    padding-left: var(--space-6);
    margin: var(--space-10) 0;
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 600;
    font-style: italic;
    color: var(--color-text-primary);
    line-height: 1.5;
}

.article-cta {
    margin-top: var(--space-16);
    padding: var(--space-10);
    background-color: var(--color-bg-alt);
    border-radius: var(--radius-xl);
    text-align: center;
}

.article-cta h3 {
    margin-top: 0;
}

/* Responsive Blog */
@media (max-width: 1024px) {
    .featured-card {
        grid-template-columns: 1fr;
    }

    .featured-image {
        min-height: 300px;
    }

    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .blog-grid {
        grid-template-columns: 1fr;
    }

    .article-title {
        font-size: var(--text-3xl);
    }

    .article-hero-image {
        aspect-ratio: 16/9;
    }
}

/* ============================================
   Response Visibility Utilities
   ============================================ */
/* Default (Desktop) */
.mobile-only-btn {
    display: none !important;
}

@media (max-width: 768px) {
    .desktop-only-btn {
        display: none !important;
    }

    .mobile-only-btn {
        display: inline-flex !important;
    }
}

/* ============================================
   Mobile Navigation & Responsive Styles
   ============================================ */
@media (max-width: 768px) {

    /* Navigation */
    .menu-toggle {
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        width: 30px;
        height: 20px;
        background: transparent;
        border: none;
        cursor: pointer;
        z-index: 101;
        padding: 0;
    }

    .menu-toggle span {
        width: 100%;
        height: 2px;
        background-color: var(--color-text-primary);
        transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
        border-radius: 4px;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }

    /* Add a third span for the hamburger if not present in HTML, 
       but script.js implies toggling class. 
       Let's assume standard 3-line hamburger or check HTML.
       HTML has 2 spans. Adjusting for 2 spans style (box or cross).
       Let's stick to the 2 spans as per HTML <button class="menu-toggle"><span></span><span></span></button>
       Actually, standard is 3, but let's check HTML.
       Line 44: <button class="menu-toggle" aria-label="Toggle menu"><span></span><span></span></button>
       It has 2 spans. I will style for 2 spans becoming an X.
    */

    .menu-toggle span:nth-child(1) {
        transform-origin: center;
    }

    .menu-toggle span:nth-child(2) {
        transform-origin: center;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }

    .menu-toggle.active span:nth-child(2) {
        transform: translateY(-9px) rotate(-45deg);
    }

    /* Wait, 2 spans usually means top and bottom, translating to center to cross. 
       Let's just use 2 lines logic based on height 20px.
       Top at 0, bottom at 100%?
       No, flex space-between handles positioning.
    */

    .nav-links {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100vw;
        height: 100vh;
        background-color: var(--color-bg);
        /* Ensure flex display is overridden/enforced for mobile layout */
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--space-8);

        /* Animation */
        transform: translateX(100%);
        transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);

        /* Hierarchy */
        z-index: 100;
        backdrop-filter: blur(10px);

        /* Reset any desktop margins/paddings */
        margin: 0;
        padding: 0;
    }

    .nav-links.active {
        transform: translateX(0);
    }

    /* Animation for links */
    .nav-link {
        font-size: var(--text-2xl);
        font-weight: 600;
        /* Optional: Add entry transition if desired, but keep simple for now */
    }

    .nav-links .btn {
        margin-top: var(--space-4);
        width: auto;
        min-width: 200px;
        justify-content: center;
    }

    .nav-link {
        font-size: var(--text-2xl);
        font-weight: 600;
    }

    /* Why Signflow Section Centering */
    .why-us-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .why-us-content {
        align-items: center;
        /* Helper if flex, but likely block/grid */
        display: flex;
        flex-direction: column;
        margin-bottom: var(--space-12);
    }

    .stats-grid {
        justify-content: center;
    }

    .why-us-cards {
        grid-template-columns: 1fr;
    }

    .benefit-card {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .benefit-icon {
        margin-bottom: var(--space-4);
    }
}
/* ============================================
   Ad Platform Section
   ============================================ */
.ad-platform-section {
    position: relative;
    padding: var(--space-32) 0;
    background: linear-gradient(135deg, #0D1117 0%, #0f1f2e 40%, #0a1628 70%, #111827 100%);
    overflow: hidden;
    isolation: isolate;
}

.ad-platform-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.ad-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
}

.ad-orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(13, 148, 136, 0.4) 0%, transparent 70%);
    top: -150px;
    left: -100px;
    animation: adOrbFloat1 8s ease-in-out infinite;
}

.ad-orb-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.3) 0%, transparent 70%);
    bottom: -100px;
    right: -50px;
    animation: adOrbFloat2 10s ease-in-out infinite;
}

.ad-orb-3 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.2) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: adOrbFloat3 12s ease-in-out infinite;
}

.ad-grid-pattern {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}

@keyframes adOrbFloat1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(40px, 30px) scale(1.1); }
}

@keyframes adOrbFloat2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-30px, -40px) scale(1.05); }
}

@keyframes adOrbFloat3 {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.4; }
    50% { transform: translate(-50%, -50%) scale(1.2); opacity: 0.6; }
}

.ad-platform-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-16);
}

/* Header */
.ad-platform-header {
    text-align: center;
    max-width: 740px;
}

.ad-section-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: #14b8a6;
    background: rgba(13, 148, 136, 0.12);
    border: 1px solid rgba(13, 148, 136, 0.3);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-6);
}

.ad-platform-title {
    font-family: var(--font-display);
    font-size: var(--text-5xl);
    font-weight: 800;
    line-height: 1.1;
    color: #ffffff;
    margin-bottom: var(--space-4);
    background: linear-gradient(135deg, #ffffff 0%, #14b8a6 60%, #6ee7b7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ad-platform-subtitle {
    font-size: var(--text-xl);
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--space-4);
    font-weight: 500;
}

.ad-platform-description {
    font-size: var(--text-base);
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.8;
}

/* How It Works */
.ad-how-it-works {
    width: 100%;
    max-width: 900px;
}

.ad-how-title {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: rgba(255, 255, 255, 0.9);
    text-align: center;
    margin-bottom: var(--space-8);
    position: relative;
}

.ad-how-title::after {
    content: '';
    display: block;
    width: 48px;
    height: 3px;
    background: linear-gradient(90deg, #0d9488, #14b8a6);
    border-radius: var(--radius-full);
    margin: var(--space-3) auto 0;
}

.ad-options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
    margin-bottom: var(--space-6);
}

.ad-option-card {
    display: flex;
    align-items: flex-start;
    gap: var(--space-5);
    padding: var(--space-6) var(--space-8);
    border-radius: var(--radius-2xl);
    border: 1px solid;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.ad-option-card::before {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.ad-option-card:hover::before {
    opacity: 1;
}

.ad-option-card:hover {
    transform: translateY(-4px);
}

.ad-option-primary {
    background: rgba(13, 148, 136, 0.08);
    border-color: rgba(13, 148, 136, 0.3);
}

.ad-option-primary::before {
    background: rgba(13, 148, 136, 0.06);
}

.ad-option-primary:hover {
    border-color: rgba(13, 148, 136, 0.6);
    box-shadow: 0 0 40px rgba(13, 148, 136, 0.15), 0 8px 32px rgba(0,0,0,0.3);
}

.ad-option-secondary {
    background: rgba(99, 102, 241, 0.08);
    border-color: rgba(99, 102, 241, 0.3);
}

.ad-option-secondary::before {
    background: rgba(99, 102, 241, 0.06);
}

.ad-option-secondary:hover {
    border-color: rgba(99, 102, 241, 0.6);
    box-shadow: 0 0 40px rgba(99, 102, 241, 0.15), 0 8px 32px rgba(0,0,0,0.3);
}

.ad-option-icon {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #14b8a6;
    position: relative;
    z-index: 1;
}

.ad-option-secondary .ad-option-icon {
    color: #a5b4fc;
}

.ad-option-content {
    flex: 1;
    position: relative;
    z-index: 1;
}

.ad-option-arrow {
    font-size: 1.25rem;
    color: #14b8a6;
    font-weight: 700;
    margin-bottom: var(--space-2);
    transition: transform var(--transition-base);
}

.ad-option-secondary .ad-option-arrow {
    color: #a5b4fc;
}

.ad-option-card:hover .ad-option-arrow {
    transform: translateX(4px);
}

.ad-option-title {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 700;
    color: #ffffff;
    margin-bottom: var(--space-2);
}

.ad-option-desc {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.55);
    line-height: 1.6;
}

/* Revenue Banner */
.ad-revenue-banner {
    display: flex;
    align-items: center;
    gap: var(--space-5);
    padding: var(--space-6) var(--space-8);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.08) 0%, rgba(234, 179, 8, 0.05) 100%);
    border: 1px solid rgba(245, 158, 11, 0.25);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
}

.ad-revenue-banner:hover {
    border-color: rgba(245, 158, 11, 0.45);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.12) 0%, rgba(234, 179, 8, 0.08) 100%);
    box-shadow: 0 0 30px rgba(245, 158, 11, 0.1);
}

.ad-revenue-icon {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    border-radius: var(--radius-xl);
    background: rgba(245, 158, 11, 0.12);
    border: 1px solid rgba(245, 158, 11, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #f59e0b;
}

.ad-revenue-text {
    font-size: var(--text-base);
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.6;
    font-weight: 500;
}

/* CTA Button */
.ad-platform-cta {
    display: flex;
    justify-content: center;
}

.ad-cta-btn {
    background: linear-gradient(135deg, #0d9488 0%, #14b8a6 50%, #0891b2 100%);
    color: white;
    padding: var(--space-4) var(--space-10);
    font-size: var(--text-base);
    font-weight: 700;
    border-radius: var(--radius-full);
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 4px 24px rgba(13, 148, 136, 0.4), 0 0 0 0 rgba(13, 148, 136, 0.3);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.ad-cta-btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 40px rgba(13, 148, 136, 0.5), 0 0 0 6px rgba(13, 148, 136, 0.1);
    color: white;
}

.ad-cta-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
    transition: 0.6s;
}

.ad-cta-btn:hover::before {
    left: 100%;
}

/* Ad Platform Responsive */
@media (max-width: 768px) {
    .ad-platform-title {
        font-size: var(--text-3xl);
    }

    .ad-options-grid {
        grid-template-columns: 1fr;
    }

    .ad-option-card {
        padding: var(--space-5) var(--space-6);
    }

    .ad-revenue-banner {
        flex-direction: column;
        text-align: center;
        padding: var(--space-6);
    }

    .ad-platform-header {
        padding: 0 var(--space-4);
    }
}

/* ============================================
   FAQ Section Styles
   ============================================ */
.faq-section {
    padding: var(--space-32) 0;
    background-color: var(--color-surface);
}

.faq-grid {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.faq-item {
    background-color: var(--color-bg);
    border: 1px solid var(--color-bg-alt);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item:hover {
    border-color: rgba(13, 148, 136, 0.2);
    box-shadow: var(--shadow-md);
}

.faq-trigger {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6) var(--space-8);
    background: transparent;
    text-align: left;
    transition: all var(--transition-fast);
}

.faq-question {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-text-primary);
}

.faq-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
    transition: transform var(--transition-base);
}

.line-v {
    transition: transform var(--transition-base);
}

.faq-item.active {
    background-color: var(--color-surface);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-lg);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
    color: var(--color-error);
}

.faq-item.active .line-v {
    transform: scaleY(0);
}

.faq-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow) cubic-bezier(0, 1, 0, 1);
}

.faq-item.active .faq-content {
    max-height: 1000px;
    transition: max-height var(--transition-slow) cubic-bezier(1, 0, 1, 0);
}

.faq-answer {
    padding: 0 var(--space-8) var(--space-8) var(--space-8);
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

@media (max-width: 768px) {
    .faq-trigger {
        padding: var(--space-5) var(--space-6);
    }
    
    .faq-question {
        font-size: var(--text-base);
    }
    
    .faq-answer {
        padding: 0 var(--space-6) var(--space-6) var(--space-6);
    }
}