/* ================================
   CSS RESET & BASE STYLES
   ================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette - Futuristic AI Theme */
    --color-primary: #6366F1;
    --color-primary-dark: #4F46E5;
    --color-primary-light: #818CF8;
    --color-secondary: #06B6D4;
    --color-accent: #F59E0B;
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-danger: #EF4444;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667EEA 0%, #764BA2 100%);
    --gradient-accent: linear-gradient(135deg, #F093FB 0%, #F5576C 100%);
    --gradient-cyber: linear-gradient(135deg, #4FACFE 0%, #00F2FE 100%);
    --gradient-success: linear-gradient(135deg, #43E97B 0%, #38F9D7 100%);

    /* Dark Theme Colors */
    --color-bg-primary: #0A0E1A;
    --color-bg-secondary: #111827;
    --color-bg-tertiary: #1F2937;
    --color-bg-card: rgba(31, 41, 55, 0.8);
    --color-bg-hover: rgba(99, 102, 241, 0.1);

    /* Text Colors */
    --color-text-primary: #F9FAFB;
    --color-text-secondary: #D1D5DB;
    --color-text-tertiary: #9CA3AF;
    --color-text-inverse: #111827;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Space Grotesk', var(--font-primary);

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

    /* Borders & Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.5);
    --shadow-glow-accent: 0 0 30px rgba(99, 102, 241, 0.7);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    /* Max Widths */
    --max-width-sm: 640px;
    --max-width-md: 768px;
    --max-width-lg: 1024px;
    --max-width-xl: 1280px;
    --max-width-2xl: 1536px;
}

/* ================================
   LIGHT THEME OVERRIDES
   ================================ */
[data-theme="light"] {
    --color-bg-primary: #F8FAFC;
    --color-bg-secondary: #F1F5F9;
    --color-bg-tertiary: #E2E8F0;
    --color-bg-card: rgba(255, 255, 255, 0.85);
    --color-bg-hover: rgba(99, 102, 241, 0.08);
    --color-text-primary: #1E293B;
    --color-text-secondary: #475569;
    --color-text-tertiary: #64748B;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.25);
}

/* Theme Specific Navigation */
[data-theme="light"] .nav {
    background: rgba(248, 250, 252, 0.85) !important;
    backdrop-filter: blur(12px) !important;
    -webkit-backdrop-filter: blur(12px) !important;
    border-bottom: 1px solid rgba(99, 102, 241, 0.12) !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04) !important;
}

[data-theme="dark"] .nav {
    background: rgba(10, 14, 26, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(99, 102, 241, 0.2);
}

[data-theme="light"] body {
    background-color: var(--color-bg-primary);
}

[data-theme="light"] .demo-textarea,
[data-theme="light"] .demo-input,
[data-theme="light"] .demo-select,
[data-theme="light"] .form-group input,
[data-theme="light"] .form-group select,
[data-theme="light"] .form-group textarea {
    background: #fff;
    color: var(--color-text-primary);
}

[data-theme="light"] .use-case-card,
[data-theme="light"] .service-card,
[data-theme="light"] .demo-card,
[data-theme="light"] .stat-box,
[data-theme="light"] .contact-form-container {
    background: rgba(255, 255, 255, 0.9);
    box-shadow: var(--shadow-md);
}

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

.container {
    width: 100%;
    max-width: var(--max-width-xl);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ================================
   NAVIGATION
   ================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition-base);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 15px;
    height: 80px;
    text-decoration: none;
    transition: height var(--transition-base);
}

.logo-text {
    font-size: 1.75rem;
    font-weight: 800;
    font-family: var(--font-display);
    color: var(--color-text-primary);
    letter-spacing: -0.5px;
    white-space: nowrap;
}

.logo-accent {
    color: var(--color-primary);
}

@media (max-width: 768px) {
    .nav-logo {
        height: 60px;
        gap: 10px;
    }
    .logo-text {
        font-size: 1.4rem;
    }
}

.logo-img {
    height: 100%;
    width: auto;
    object-fit: contain;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    list-style: none;
}

.nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-size-sm);
    transition: var(--transition-fast);
    position: relative;
    padding: var(--spacing-xs) 0;
}

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

.nav-link:not(.btn-primary)::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-base);
}

.nav-link:not(.btn-primary):hover::after {
    width: 100%;
}

/* Nav controls group (theme + lang + hamburger) */
.nav-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.theme-toggle,
.lang-toggle {
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-full);
    color: var(--color-text-primary);
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 600;
    padding: 6px 12px;
    transition: all var(--transition-base);
    white-space: nowrap;
    min-height: 36px;
}

.theme-toggle:hover,
.lang-toggle:hover {
    background: rgba(99, 102, 241, 0.25);
    border-color: var(--color-primary);
}

/* Nav overlay backdrop */
.nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    backdrop-filter: blur(2px);
}

.nav-overlay.active {
    display: block;
}

/* ================================
   BUTTONS
   ================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--font-size-sm);
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-primary);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-accent);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-primary);
    border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-primary-light);
}

.btn-small {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-xs);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
}

.btn-full {
    width: 100%;
}

/* ================================
   HERO SECTION
   ================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--spacing-3xl) 0;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.4) 0%, transparent 70%);
    top: -100px;
    left: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.3) 0%, transparent 70%);
    top: 50%;
    right: -100px;
    animation-delay: 7s;
}

.orb-3 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.4) 0%, transparent 70%);
    bottom: 0;
    left: 50%;
    animation-delay: 14s;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    33% {
        transform: translate(30px, -30px) scale(1.1);
    }

    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }
}

.hero-container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-content {
    animation: fadeInUp 1s ease;
}

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

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-full);
    color: var(--color-primary-light);
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.5;
        transform: scale(1.2);
    }
}

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

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-xl);
}

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

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: var(--font-display);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-top: var(--spacing-xs);
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.ai-brain-container {
    position: relative;
    width: 100%;
    max-width: 500px;
    animation: fadeIn 1.5s ease 0.5s both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.ai-brain-img {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 0 40px rgba(99, 102, 241, 0.5));
    animation: breathe 4s ease-in-out infinite;
}

@keyframes breathe {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

.brain-pulse {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 2px solid var(--color-primary);
    opacity: 0;
    animation: ripple 3s ease-out infinite;
}

.pulse-2 {
    animation-delay: 1s;
}

.pulse-3 {
    animation-delay: 2s;
}

@keyframes ripple {
    0% {
        transform: translate(-50%, -50%) scale(0.5);
        opacity: 0.6;
    }

    100% {
        transform: translate(-50%, -50%) scale(1.5);
        opacity: 0;
    }
}

/* ================================
   SECTION HEADERS
   ================================ */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    font-family: var(--font-display);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* ================================
   SERVICES SECTION
   ================================ */
.services {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(180deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    position: relative;
    background: var(--color-bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.service-card.featured {
    border: 2px solid var(--color-primary);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(139, 92, 246, 0.15) 100%);
}

.featured-badge {
    position: absolute;
    top: -12px;
    right: var(--spacing-lg);
    background: var(--gradient-primary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.service-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    display: inline-block;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {

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

    50% {
        transform: translateY(-10px);
    }
}

.service-card:hover .service-icon {
    animation: none;
    transform: scale(1.2) rotate(5deg);
}

.service-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-display);
}

.service-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.service-features {
    list-style: none;
}

.service-features li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 700;
}

/* ================================
   CAPABILITIES SECTION
   ================================ */
.capabilities {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-secondary);
}

.demo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.demo-card {
    background: var(--color-bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.demo-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

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

.demo-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    font-family: var(--font-display);
}

.demo-tag {
    background: rgba(99, 102, 241, 0.2);
    color: var(--color-primary-light);
    padding: 4px var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.demo-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.demo-interactive {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.demo-textarea,
.demo-input,
.demo-select {
    width: 100%;
    background: var(--color-bg-tertiary);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    transition: var(--transition-base);
}

.demo-textarea {
    min-height: 100px;
    resize: vertical;
}

.demo-textarea:focus,
.demo-input:focus,
.demo-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.demo-result {
    background: var(--color-bg-tertiary);
    border-left: 3px solid var(--color-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    color: var(--color-text-secondary);
    min-height: 60px;
    display: flex;
    align-items: center;
    font-size: var(--font-size-sm);
}

.upload-area {
    background: var(--color-bg-tertiary);
    border: 2px dashed rgba(99, 102, 241, 0.5);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
}

.upload-area:hover {
    border-color: var(--color-primary);
    background: rgba(99, 102, 241, 0.1);
}

.upload-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: var(--spacing-md);
}

.chart-container {
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Voice Demo Styling */
.voice-demo-player {
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.voice-waves {
    display: flex;
    align-items: center;
    gap: 4px;
    height: 30px;
}

.voice-waves span {
    width: 4px;
    background: var(--color-primary);
    border-radius: 2px;
    height: 5px;
}

.voice-waves.active span {
    animation: wave 1s ease-in-out infinite;
}

.voice-waves span:nth-child(2) {
    animation-delay: 0.1s;
}

.voice-waves span:nth-child(3) {
    animation-delay: 0.2s;
}

.voice-waves span:nth-child(4) {
    animation-delay: 0.3s;
}

.voice-waves span:nth-child(5) {
    animation-delay: 0.4s;
}

@keyframes wave {

    0%,
    100% {
        height: 5px;
    }

    50% {
        height: 30px;
    }
}

/* Chat Demo Styling */
.chat-demo-window {
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    height: 200px;
    padding: 15px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.chat-msg {
    max-width: 85%;
    padding: 8px 12px;
    border-radius: 12px;
    font-size: 0.85rem;
}

.chat-msg.bot {
    background: rgba(99, 102, 241, 0.2);
    align-self: flex-start;
    border-bottom-left-radius: 2px;
}

.chat-msg.user {
    background: var(--color-primary);
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 2px;
}

.chat-input-group {
    display: flex;
    gap: 8px;
}

/* ================================
   ABOUT SECTION
   ================================ */
.about {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(180deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-text {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.about-features {
    display: grid;
    gap: var(--spacing-lg);
}

.about-feature {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.feature-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: var(--font-size-lg);
}

.feature-content h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    font-family: var(--font-display);
}

.feature-content p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.about-visual {
    display: flex;
    justify-content: center;
}

.stats-showcase {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.stat-box {
    background: var(--color-bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.stat-box:hover {
    transform: translateY(-5px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.stat-box:last-child {
    grid-column: 1 / -1;
}

.stat-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.stat-value {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: var(--font-display);
    margin-bottom: var(--spacing-xs);
}

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

/* ================================
   CONTACT SECTION
   ================================ */
.contact {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-primary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.contact-text {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.contact-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
}

.contact-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-bottom: 4px;
}

.contact-value {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text-primary);
}

.contact-form-container {
    background: var(--color-bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
    background: var(--color-bg-tertiary);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    transition: var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* Form status message */
.form-status {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-align: center;
}

.form-status.success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.4);
    color: #10B981;
}

.form-status.error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.4);
    color: #EF4444;
}

.form-group-checkbox {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    margin-top: 10px;
    margin-bottom: 20px;
}

.form-group-checkbox input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    cursor: pointer;
    accent-color: var(--color-primary);
}

.checkbox-label {
    font-size: 0.85rem;
    color: var(--color-text-tertiary);
    line-height: 1.5;
}

/* ================================
   FOOTER
   ================================ */
.footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid rgba(99, 102, 241, 0.2);
    padding: var(--spacing-xl) 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: var(--color-text-tertiary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--color-primary-light);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-lg);
    font-weight: 700;
    font-family: var(--font-display);
    margin-bottom: var(--spacing-sm);
}

.footer-tagline {
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
}

.footer-copyright {
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
}

/* ================================
   BEAUTY USE CASES SECTION
   ================================ */
.beauty-use-cases {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-primary);
    position: relative;
}

.beauty-use-cases::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(236, 72, 153, 0.3), transparent);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.use-case-card {
    background: rgba(17, 24, 39, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(236, 72, 153, 0.15);
    /* Pinkish border for beauty theme */
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    height: 100%;
}

.use-case-card:hover {
    transform: translateY(-5px);
    border-color: rgba(236, 72, 153, 0.5);
    box-shadow: 0 10px 25px -5px rgba(236, 72, 153, 0.15);
    background: linear-gradient(180deg, rgba(236, 72, 153, 0.05) 0%, rgba(17, 24, 39, 0.8) 100%);
}

.use-case-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    background: rgba(236, 72, 153, 0.1);
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
}

.use-case-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    font-family: var(--font-display);
    color: #FBCFE8;
    /* Soft pink text */
}

.use-case-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ================================
   MOBILE NAVIGATION
   ================================ */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--color-text-primary);
    border-radius: 3px;
    transition: all 0.3s ease;
}

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

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

.mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* ================================
   RESPONSIVE DESIGN
   ================================ */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .hero-visual {
        order: -1;
    }

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

    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        max-width: 300px;
        height: 100vh;
        background: rgba(10, 14, 26, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--spacing-xl);
        transition: right 0.3s ease;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.5);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-link {
        font-size: var(--font-size-lg);
    }

    .hero-title {
        font-size: var(--font-size-4xl);
    }

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

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .section-title {
        font-size: var(--font-size-4xl);
    }

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

    .stats-showcase {
        grid-template-columns: 1fr;
    }

    .stat-box:last-child {
        grid-column: auto;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-6xl: 2.5rem;
        --font-size-5xl: 2rem;
        --font-size-4xl: 1.75rem;
    }

    .nav-menu {
        gap: var(--spacing-sm);
        font-size: var(--font-size-xs);
    }

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

    .btn-large {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }
}