/* MockupHelper Pro - Professional & Modern Stylesheet V2.0 */
/* Inspired by: Figma, Notion, Linear */
/* Dark + Light Hybrid Theme */

/* ===== CSS VARIABLES ===== */
:root {
    /* Light Mode Colors */
    --color-bg-light: #ffffff;
    --color-bg-light-gray: #f7fafc;
    --color-text-dark: #1a202c;
    --color-text-gray: #718096;
    
    /* Dark Mode Colors (from tutorial.html) */
    --color-bg-dark: #0f1419;
    --color-bg-dark-card: #1a1f2e;
    --color-bg-dark-elevated: #242b3d;
    --color-text-light: #e8eaed;
    --color-text-light-gray: #9aa0a6;
    --color-border-dark: #2d3748;
    
    /* Brand Colors */
    --color-primary: #667eea;
    --color-primary-dark: #764ba2;
    --color-secondary: #00d2a0; /* Green from tutorial */
    --color-secondary-dark: #00b88a;
    --color-accent: #f093fb;
    --color-accent-dark: #f5576c;
    --color-success: #48bb78;
    --color-error: #f56565;
    --color-warning: #ed8936;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-green: linear-gradient(135deg, #00d2a0 0%, #00b88a 100%);
    --gradient-dark: linear-gradient(135deg, #1a1f2e 0%, #0f1419 100%);
    --gradient-overlay: linear-gradient(135deg, rgba(102, 126, 234, 0.95) 0%, rgba(118, 75, 162, 0.95) 100%);
    
    /* Fonts */
    --font-heading: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Spacing */
    --container-width: 1280px;
    --section-padding: 120px 0;
    --section-padding-mobile: 80px 0;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
    --shadow-primary: 0 10px 40px rgba(102, 126, 234, 0.3);
    --shadow-green: 0 10px 40px rgba(0, 210, 160, 0.3);
    --shadow-dark: 0 10px 40px rgba(0, 0, 0, 0.5);
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-index */
    --z-navbar: 1000;
    --z-dropdown: 1500;
    --z-modal: 2000;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    color: var(--color-text-dark);
    background-color: var(--color-bg-light);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body.menu-open {
    overflow: hidden;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 { font-size: 4rem; }
h2 { font-size: 3rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
    line-height: 1.7;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ===== CONTAINER ===== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 40px;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-align: center;
    white-space: nowrap;
    line-height: 1;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 50px rgba(102, 126, 234, 0.4);
}

.btn-primary-green {
    background: var(--gradient-green);
    color: var(--color-bg-dark);
    box-shadow: var(--shadow-green);
    font-weight: 700;
}

.btn-primary-green:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 50px rgba(0, 210, 160, 0.4);
}

.btn-secondary-outline {
    background: transparent;
    color: white;
    border-color: white;
}

.btn-secondary-outline:hover {
    background: white;
    color: var(--color-bg-dark);
}

.btn-white {
    background: white;
    color: var(--color-primary);
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-large {
    padding: 18px 40px;
    font-size: 1.1rem;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ===== SECTIONS ===== */
section {
    position: relative;
}

.section-light {
    background: var(--color-bg-light);
    color: var(--color-text-dark);
    padding: var(--section-padding);
}

.section-dark {
    background: var(--color-bg-dark);
    color: var(--color-text-light);
    padding: var(--section-padding);
}

.section-gradient {
    background: var(--gradient-primary);
    color: white;
    padding: var(--section-padding);
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-title {
    font-size: 3rem;
    margin-bottom: 16px;
    font-weight: 800;
}

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

.section-dark .section-title {
    color: var(--color-secondary);
}

.section-subtitle {
    font-size: 1.3rem;
    color: var(--color-text-gray);
    max-width: 700px;
    margin: 0 auto;
}

.section-dark .section-subtitle {
    color: var(--color-text-light-gray);
}

/* ===== NAVBAR ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: var(--z-navbar);
    transition: all var(--transition-normal);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
}

.logo img {
    height: 35px;
    width: auto;
    transition: var(--transition-fast);
}

.logo:hover img {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    gap: 40px;
    align-items: center;
}

.nav-link {
    font-weight: 500;
    color: var(--color-text-dark);
    position: relative;
    font-size: 0.95rem;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-green);
    transition: var(--transition-normal);
}

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

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

.nav-actions {
    display: flex;
    gap: 16px;
    align-items: center;
}

.language-toggle {
    padding: 8px 18px;
    background: var(--color-bg-light-gray);
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    color: var(--color-primary);
    cursor: pointer;
    transition: var(--transition-fast);
    font-family: var(--font-heading);
}

.language-toggle:hover {
    background: var(--color-primary);
    color: white;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--color-text-dark);
    border-radius: 2px;
    transition: var(--transition-normal);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translateY(8px);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translateY(-8px);
}

/* ===== HERO SECTION - DARK & DRAMATIC ===== */
.hero-dark {
    min-height: 100vh;
    background: var(--color-bg-dark);
    color: white;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

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

.gradient-sphere {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.2;
    animation: float 20s ease-in-out infinite;
}

.sphere-1 {
    width: 600px;
    height: 600px;
    background: var(--gradient-green);
    top: -200px;
    right: -100px;
}

.sphere-2 {
    width: 500px;
    height: 500px;
    background: var(--gradient-primary);
    bottom: -150px;
    left: -150px;
    animation-delay: -5s;
}

@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-content {
    position: relative;
    z-index: 1;
}

.hero-text-center {
    text-align: center;
    max-width: 1100px;
    margin: 0 auto;
}

.hero-logo {
    max-width: 400px;
    margin: 0 auto 40px;
    opacity: 1;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.1;
    opacity: 1;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 40px;
    color: var(--color-text-light-gray);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    opacity: 1;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-bottom: 40px;
    opacity: 1;
}

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

.hero-stat strong {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-secondary);
    margin-bottom: 8px;
}

.hero-stat span {
    font-size: 0.9rem;
    color: var(--color-text-light-gray);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 60px;
    opacity: 1;
}

/* Hero Video Container */
.hero-video-container {
    max-width: 900px;
    margin: 0 auto;
    opacity: 1;
}

.video-wrapper {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-dark);
    border: 1px solid var(--color-border-dark);
}

.hero-video {
    width: 100%;
    display: block;
}

.video-controls {
    position: absolute;
    bottom: 20px;
    right: 20px;
    display: flex;
    gap: 10px;
    z-index: 10;
}

.video-play-pause,
.video-lang {
    padding: 10px 16px;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: white;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.video-play-pause:hover,
.video-lang:hover {
    background: rgba(0, 210, 160, 0.9);
    border-color: var(--color-secondary);
}

/* ===== STATS SECTION ===== */
.stats-section {
    background: var(--color-bg-dark);
    padding: 100px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.stat-card {
    text-align: center;
    padding: 40px 20px;
    background: var(--color-bg-dark-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-dark);
    transition: var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-secondary);
    box-shadow: 0 20px 60px rgba(0, 210, 160, 0.2);
}

.stat-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--color-secondary);
    margin-bottom: 12px;
    font-family: var(--font-heading);
}

.stat-label {
    font-size: 1rem;
    color: var(--color-text-light);
    font-weight: 600;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-desc {
    font-size: 0.9rem;
    color: var(--color-text-light-gray);
}

/* ===== FEATURES PREVIEW ===== */
.features-preview {
    padding: var(--section-padding);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 60px;
}

.feature-card-modern {
    background: white;
    padding: 50px;
    border-radius: var(--radius-xl);
    border: 1px solid #e2e8f0;
    transition: all var(--transition-normal);
    position: relative;
}

.feature-card-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-green);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    opacity: 0;
    transition: var(--transition-normal);
}

.feature-card-modern:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-secondary);
}

.feature-card-modern:hover::before {
    opacity: 1;
}

.feature-icon-modern {
    width: 70px;
    height: 70px;
    background: var(--gradient-green);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    transition: var(--transition-normal);
}

.feature-card-modern:hover .feature-icon-modern {
    transform: scale(1.1) rotate(5deg);
}

.feature-icon-modern svg {
    width: 36px;
    height: 36px;
    color: white;
    stroke-width: 2.5;
}

.feature-title-modern {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--color-text-dark);
    font-weight: 700;
}

.feature-desc-modern {
    color: var(--color-text-gray);
    line-height: 1.8;
    margin-bottom: 20px;
}

.feature-link {
    color: var(--color-secondary);
    font-weight: 600;
    font-size: 0.95rem;
}

.feature-link:hover {
    color: var(--color-secondary-dark);
}

.features-cta {
    text-align: center;
}

/* ===== VIDEO DEMO SECTION ===== */
.video-demo {
    background: var(--color-bg-dark-card);
    padding: var(--section-padding);
}

.demo-content {
    max-width: 1000px;
    margin: 0 auto;
}

.screenshot-slider-modern {
    position: relative;
}

.slider-container {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-dark);
    background: var(--color-bg-dark);
    border: 1px solid var(--color-border-dark);
}

.slide {
    display: none;
    animation: fadeIn 0.5s ease;
}

.slide.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.slide img {
    width: 100%;
    display: block;
}

.slide-caption {
    padding: 24px;
    text-align: center;
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--color-text-light);
    background: var(--color-bg-dark);
}

.slider-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-top: 40px;
}

.slider-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--color-bg-dark-elevated);
    border: 2px solid var(--color-border-dark);
    font-size: 2rem;
    color: var(--color-text-light);
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.slider-btn:hover {
    background: var(--gradient-green);
    color: var(--color-bg-dark);
    border-color: var(--color-secondary);
    transform: scale(1.1);
}

.slider-dots {
    display: flex;
    gap: 12px;
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-border-dark);
    border: none;
    cursor: pointer;
    transition: var(--transition-fast);
}

.slider-dot.active {
    background: var(--color-secondary);
    width: 36px;
    border-radius: 6px;
}

/* ===== USE CASES SECTION ===== */
.use-cases {
    padding: var(--section-padding);
    background: var(--color-bg-light);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.use-case-card {
    background: white;
    padding: 50px;
    border-radius: var(--radius-xl);
    border: 1px solid #e2e8f0;
    transition: all var(--transition-normal);
    text-align: center;
}

.use-case-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

.use-case-icon {
    font-size: 4rem;
    margin-bottom: 24px;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.use-case-title {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--color-text-dark);
    font-weight: 700;
}

.use-case-desc {
    color: var(--color-text-gray);
    line-height: 1.8;
}

/* ===== PRICING CTA SECTION ===== */
.pricing-cta {
    padding: var(--section-padding);
    position: relative;
    overflow: hidden;
}

.pricing-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><rect width="100" height="100" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></svg>');
    background-size: 50px 50px;
    opacity: 0.3;
}

.pricing-cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.pricing-cta-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 20px;
}

.pricing-cta-subtitle {
    font-size: 1.3rem;
    margin-bottom: 50px;
    opacity: 0.9;
}

.pricing-cta-cards {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 40px;
}

.pricing-cta-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    padding: 30px 50px;
    transition: var(--transition-normal);
}

.pricing-cta-card:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.05);
}

.pricing-amount {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 10px;
}

.pricing-desc {
    font-size: 1rem;
    opacity: 0.9;
}

.pricing-cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
}

.pricing-cta-features {
    display: flex;
    justify-content: center;
    gap: 40px;
    font-size: 1rem;
    opacity: 0.9;
}

/* ===== FOOTER ===== */
.footer-dark {
    background: var(--color-bg-dark);
    color: var(--color-text-light);
    padding: 80px 0 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 80px;
    margin-bottom: 50px;
}

.footer-logo {
    max-width: 250px;
    margin-bottom: 20px;
}

.footer-brand p {
    color: var(--color-text-light-gray);
    margin-bottom: 24px;
    line-height: 1.7;
}

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

.footer-stats span {
    font-size: 0.85rem;
    color: var(--color-text-light-gray);
    padding: 6px 12px;
    background: var(--color-bg-dark-card);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border-dark);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 50px;
}

.footer-column h4 {
    color: var(--color-secondary);
    margin-bottom: 20px;
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 14px;
}

.footer-column a {
    color: var(--color-text-light-gray);
    transition: var(--transition-fast);
    font-size: 0.95rem;
}

.footer-column a:hover {
    color: var(--color-secondary);
    padding-left: 5px;
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid var(--color-border-dark);
    text-align: center;
}

.footer-bottom p {
    color: var(--color-text-light-gray);
    margin: 0;
    font-size: 0.9rem;
}

/* ===== RESPONSIVE DESIGN ===== */

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) {
    .container {
        padding: 0 30px;
    }
    
    h1 { font-size: 3rem; }
    h2 { font-size: 2.5rem; }
    
    section {
        padding: 80px 0;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-stats {
        gap: 40px;
    }
    
    .hero-stat strong {
        font-size: 2rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .use-cases-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-cta-cards {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 50px;
    }
}

/* Mobile (max 768px) */
@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    
    h1 { font-size: 2rem !important; }
    h2 { font-size: 1.75rem !important; }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        bottom: 0;
        background: white;
        flex-direction: column;
        padding: 40px 20px;
        transform: translateX(100%);
        transition: var(--transition-normal);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-dark {
        min-height: auto;
        padding: 120px 0 80px;
    }
    
    .hero-logo {
        max-width: 280px;
        margin-bottom: 30px;
    }
    
    .hero-title {
        font-size: 2rem !important;
    }
    
    .hero-subtitle {
        font-size: 1.1rem !important;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 30px;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .stats-grid {
        grid-template-columns: 1fr !important;
    }
    
    .features-grid {
        grid-template-columns: 1fr !important;
    }
    
    .feature-card-modern {
        padding: 40px 30px !important;
    }
    
    .use-cases-grid {
        grid-template-columns: 1fr !important;
    }
    
    .pricing-cta-title {
        font-size: 2rem !important;
    }
    
    .pricing-cta-subtitle {
        font-size: 1.1rem !important;
    }
    
    .pricing-cta-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .pricing-cta-buttons .btn {
        width: 100%;
    }
    
    .pricing-cta-features {
        flex-direction: column;
        gap: 15px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr !important;
    }
}

/* Small Mobile (max 480px) */
@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
}

/* ===== FEATURES PAGE STYLES ===== */
.features-hero {
    padding: 140px 0 100px;
    text-align: center;
}

.features-hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 24px;
}

.features-hero-subtitle {
    font-size: 1.4rem;
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto;
}

.features-detailed {
    padding: 100px 0;
}

.features-grid-detailed {
    display: grid;
    gap: 60px;
}

.feature-card-detailed {
    background: white;
    border-radius: var(--radius-xl);
    border: 1px solid #e2e8f0;
    overflow: hidden;
    transition: var(--transition-normal);
}

.feature-card-detailed:hover {
    box-shadow: var(--shadow-xl);
    border-color: var(--color-secondary);
}

.feature-card-header {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 40px;
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
}

.feature-icon-large {
    width: 80px;
    height: 80px;
    background: var(--gradient-green);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-icon-large svg {
    width: 40px;
    height: 40px;
    color: white;
    stroke-width: 2.5;
}

.feature-card-title {
    font-size: 1.8rem;
    margin-bottom: 8px;
    color: var(--color-text-dark);
}

.feature-card-label {
    font-size: 0.9rem;
    color: var(--color-text-gray);
    font-weight: 500;
}

.feature-card-body {
    padding: 40px;
}

.feature-card-body p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-text-gray);
    margin-bottom: 24px;
}

.feature-list {
    list-style: none;
    margin-bottom: 24px;
}

.feature-list li {
    padding: 12px 0;
    color: var(--color-text-gray);
    border-bottom: 1px solid #e2e8f0;
    font-size: 1rem;
}

.feature-list li:last-child {
    border-bottom: none;
}

.feature-screenshot {
    padding: 0 40px 40px;
}

.feature-screenshot img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

/* How It Works Section */
.how-it-works {
    padding: 100px 0;
}

.steps-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr;
    gap: 30px;
    align-items: center;
}

.step-card {
    background: var(--color-bg-dark-card);
    padding: 50px;
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border-dark);
    text-align: center;
    transition: var(--transition-normal);
}

.step-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-secondary);
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--gradient-green);
    color: var(--color-bg-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 800;
    margin: 0 auto 24px;
}

.step-title {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--color-text-light);
}

.step-desc {
    color: var(--color-text-light-gray);
    line-height: 1.7;
}

.step-arrow {
    font-size: 2rem;
    color: var(--color-secondary);
    font-weight: 300;
}

/* Before/After Section */
.before-after {
    padding: 100px 0;
}

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    margin-bottom: 60px;
}

.comparison-card {
    background: white;
    padding: 50px;
    border-radius: var(--radius-xl);
    border: 2px solid #e2e8f0;
    position: relative;
}

.comparison-before {
    border-color: #fed7d7;
}

.comparison-after {
    border-color: #c6f6d5;
}

.comparison-badge {
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    background: #feb2b2;
    color: #742a2a;
    padding: 8px 24px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.85rem;
}

.comparison-badge-success {
    background: var(--gradient-green);
    color: white;
}

.comparison-card h3 {
    font-size: 1.8rem;
    margin-bottom: 24px;
    text-align: center;
}

.comparison-list {
    list-style: none;
}

.comparison-list li {
    padding: 16px 0;
    font-size: 1.1rem;
    border-bottom: 1px solid #e2e8f0;
}

.comparison-list li:last-child {
    border-bottom: none;
    font-weight: 700;
    color: var(--color-primary);
}

.comparison-result {
    display: flex;
    justify-content: center;
    gap: 80px;
    text-align: center;
}

.result-stat {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.result-stat strong {
    font-size: 3.5rem;
    font-weight: 800;
    background: var(--gradient-green);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.result-stat span {
    font-size: 0.95rem;
    color: var(--color-text-gray);
    font-weight: 600;
}

/* Features CTA */
.features-cta {
    padding: 100px 0;
}

.cta-content {
    text-align: center;
}

.cta-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 20px;
}

.cta-subtitle {
    font-size: 1.3rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* ===== ANIMATIONS & EFFECTS ===== */
.animate-on-scroll {
    opacity: 1;
    transform: translateY(0);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Smooth loading state */
.loading-skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s ease-in-out infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ===== FAQ STYLES ===== */
.faq-section {
    padding: 100px 0;
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid #e2e8f0;
    transition: var(--transition-normal);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-secondary);
}

.faq-question {
    width: 100%;
    padding: 24px;
    background: none;
    border: none;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text-dark);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    transition: var(--transition-fast);
}

.faq-question:hover {
    color: var(--color-secondary);
}

.faq-icon {
    width: 24px;
    height: 24px;
    color: var(--color-secondary);
    transition: var(--transition-normal);
    flex-shrink: 0;
    stroke-width: 2.5;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-item.active .faq-answer {
    max-height: 600px;
}

.faq-answer p {
    padding: 0 24px 24px;
    margin: 0;
    line-height: 1.8;
    color: var(--color-text-gray);
}

/* ===== ADDITIONAL COMPONENT STYLES ===== */
.icon {
    width: 24px;
    height: 24px;
    stroke-width: 2;
}

/* Form validation states */
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-secondary);
}

.form-group input.valid,
.form-group textarea.valid {
    border-color: var(--color-success);
}

.form-group input.invalid,
.form-group textarea.invalid {
    border-color: var(--color-error);
}

/* Loading states */
.btn.loading {
    opacity: 0.7;
    cursor: wait;
}

.btn.loading::after {
    content: '';
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin-left: 8px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== DOCS SIDEBAR STYLES ===== */
.docs-sidebar {
    scrollbar-width: thin;
    scrollbar-color: var(--color-border-dark) transparent;
}

.docs-sidebar::-webkit-scrollbar {
    width: 6px;
}

.docs-sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.docs-sidebar::-webkit-scrollbar-thumb {
    background: var(--color-border-dark);
    border-radius: 3px;
}

.docs-sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--color-secondary);
}

/* ===== TESTIMONIALS STYLES ===== */
.testimonials-section {
    padding: 100px 0;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.testimonial-card {
    background: white;
    padding: 40px;
    border-radius: var(--radius-xl);
    border: 1px solid #e2e8f0;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.testimonial-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-secondary);
}

.testimonial-stars {
    color: #FFD700;
    font-size: 1.2rem;
    margin-bottom: 16px;
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: 12px;
}

/* Responsive for Features Page */
@media (max-width: 1024px) {
    .steps-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .step-arrow {
        transform: rotate(90deg);
    }
    
    .comparison-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .download-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .features-hero-title {
        font-size: 2.5rem;
    }
    
    .feature-card-header {
        flex-direction: column;
        text-align: center;
    }
    
    .cta-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .cta-buttons .btn {
        width: 100%;
    }
    
    .comparison-result {
        flex-direction: column;
        gap: 40px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .download-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-cards-grid {
        grid-template-columns: 1fr !important;
    }
    
    .features-grid-detailed {
        gap: 40px;
    }
    
    .feature-card-detailed {
        padding: 30px;
    }
    
    .requirements-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== VIDEO CONTROLS BAR - MODERN DESIGN ===== */
.video-controls-bar {
    display: flex !important;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.92) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 0 0 16px 16px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-top: none;
    width: 100%;
    box-sizing: border-box;
}

.video-btn {
    display: flex !important;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent !important;
    border: none !important;
    border-radius: 8px;
    color: rgba(255, 255, 255, 0.85);
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
    padding: 0 !important;
}

.video-btn:hover {
    background: rgba(255, 255, 255, 0.15) !important;
    color: #fff;
}

.video-btn svg {
    width: 20px;
    height: 20px;
}

.video-btn.video-play-pause {
    width: 40px;
    height: 40px;
}

.video-btn.video-lang {
    width: auto;
    padding: 0 14px !important;
    height: 32px;
    font-weight: 600;
    font-size: 0.75rem;
    background: rgba(255, 255, 255, 0.1) !important;
    border-radius: 6px;
}

.video-btn.video-lang:hover {
    background: rgba(102, 126, 234, 0.5) !important;
}

.video-progress-container {
    flex: 1;
    display: flex;
    align-items: center;
    min-width: 0;
}

.video-progress {
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    cursor: pointer;
    outline: none;
    position: relative;
    z-index: 10;
}

.video-progress-container {
    position: relative;
    padding: 8px 0;
}

.video-progress::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: #fff;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
    margin-top: -5px;
    position: relative;
    z-index: 20;
}

.video-progress::-webkit-slider-runnable-track {
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, #667eea var(--progress, 0%), rgba(255, 255, 255, 0.2) var(--progress, 0%));
    border-radius: 4px;
}

.video-progress::-moz-range-track {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

.video-progress::-moz-range-progress {
    background: #667eea;
    height: 6px;
    border-radius: 4px;
}

.video-progress::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: #fff;
    border-radius: 50%;
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.video-volume-container {
    display: flex;
    align-items: center;
    gap: 6px;
}

.video-volume {
    width: 60px;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    cursor: pointer;
}

.video-volume::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    background: #fff;
    border-radius: 50%;
    cursor: pointer;
}

.video-time {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.75rem;
    font-weight: 500;
    min-width: 70px;
    text-align: center;
}

.video-divider {
    width: 1px;
    height: 20px;
    background: rgba(255, 255, 255, 0.15);
    flex-shrink: 0;
}

/* ===== MOBILE MENU OVERRIDE ===== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed !important;
        top: 0 !important;
        left: 0 !important;
        right: 0 !important;
        bottom: 0 !important;
        width: 100vw !important;
        height: 100vh !important;
        background: #ffffff !important;
        padding: 100px 24px 40px !important;
        flex-direction: column !important;
        gap: 12px !important;
        z-index: 999 !important;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        box-shadow: -5px 0 30px rgba(0,0,0,0.1);
    }
    
    .nav-menu.active {
        transform: translateX(0) !important;
    }
    
    .nav-link {
        display: block !important;
        font-size: 1.15rem !important;
        padding: 18px 24px !important;
        border-radius: 14px !important;
        text-align: center !important;
        color: #1a1a2e !important;
        font-weight: 600 !important;
        background: #f8fafc !important;
        border: 1px solid #e2e8f0 !important;
    }
    
    .nav-link:hover {
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
        color: white !important;
    }
    
    .nav-link::after {
        display: none !important;
    }
    
    .mobile-menu-toggle {
        display: flex !important;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 5px;
        width: 44px;
        height: 44px;
        padding: 10px;
        background: #f1f5f9 !important;
        border-radius: 10px;
        border: none !important;
        cursor: pointer;
        z-index: 1002;
    }
    
    .mobile-menu-toggle span {
        display: block;
        width: 20px;
        height: 2px;
        background: #334155 !important;
        border-radius: 2px;
        transition: all 0.3s ease;
    }
    
    .mobile-menu-toggle.active {
        background: #667eea !important;
    }
    
    .mobile-menu-toggle.active span {
        background: #fff !important;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .logo img {
        height: 32px !important;
        width: auto !important;
    }
    
    .video-controls-bar {
        gap: 8px;
        padding: 10px 12px;
    }
    
    .video-volume-container {
        display: flex !important;
        gap: 4px;
    }
    
    .video-volume {
        width: 40px !important;
    }
    
    /* Download Page Mobile */
    .download-card,
    .install-step,
    .requirement-card {
        padding: 24px 16px !important;
    }
    
    .download-grid,
    .requirements-grid,
    .install-steps,
    div[style*="grid-template-columns: repeat(2"],
    div[style*="grid-template-columns: repeat(3"],
    div[style*="grid-template-columns: repeat(4"] {
        display: block !important;
        grid-template-columns: 1fr !important;
    }
    
    .download-grid > *,
    div[style*="grid-template-columns"] > * {
        margin-bottom: 20px !important;
    }
    
    .download-hero-title,
    h1[style*="font-size: 4rem"],
    h1[style*="font-size: 3rem"] {
        font-size: 1.8rem !important;
    }
    
    p[style*="font-size: 1.4rem"],
    p[style*="font-size: 1.3rem"] {
        font-size: 1rem !important;
    }
    
    .download-card[style*="padding: 50px"] {
        padding: 24px 16px !important;
    }
    
    /* Features Page Mobile */
    .feature-card-detailed {
        padding: 0 !important;
    }
    
    .feature-card-header {
        padding: 20px !important;
        flex-direction: column !important;
        text-align: center !important;
    }
    
    .feature-card-body {
        padding: 20px !important;
    }
    
    .feature-icon-large {
        width: 60px !important;
        height: 60px !important;
    }
    
    /* Pricing Page Mobile */
    .pricing-card-pro {
        padding: 30px 20px !important;
    }
    
    .trust-badges {
        flex-direction: column !important;
        gap: 12px !important;
    }
    
    /* Contact Page Mobile */
    .contact-card {
        padding: 24px 16px !important;
    }
    
    /* Legal Pages Mobile */
    .legal-page {
        padding: 100px 0 60px !important;
    }
    
    .legal-page .container {
        padding: 0 16px !important;
    }
    
    .legal-page h1 {
        font-size: 1.8rem !important;
    }
    
    .legal-page > .container > div {
        padding: 30px 20px !important;
    }
    
    /* General Hero Sections */
    .features-hero,
    .pricing-hero,
    .download-hero,
    .contact-hero {
        padding: 100px 0 50px !important;
    }
    
    .features-hero-title,
    .pricing-hero-title,
    .download-hero-title,
    .contact-hero-title {
        font-size: 1.8rem !important;
    }
    
    .features-hero-subtitle,
    .pricing-hero-subtitle,
    .download-hero-subtitle,
    .contact-hero-subtitle {
        font-size: 1rem !important;
    }
}

/* Extra Small Mobile */
@media (max-width: 480px) {
    .container {
        padding: 0 12px !important;
    }
    
    .logo img {
        height: 28px !important;
    }
    
    .nav-actions .btn {
        display: none !important;
    }
    
    .nav-actions .language-toggle {
        padding: 6px 10px !important;
        font-size: 0.75rem !important;
    }
    
    .mobile-menu-toggle {
        width: 40px !important;
        height: 40px !important;
    }
    
    .feature-card-modern,
    .use-case-card,
    .stat-card,
    .testimonial-card {
        padding: 20px 16px !important;
    }
    
    .pricing-cta-card {
        padding: 20px !important;
    }
    
    .pricing-amount {
        font-size: 2.5rem !important;
    }
    
    /* Video Controls - Extra Small */
    .video-controls-bar {
        gap: 6px !important;
        padding: 8px 10px !important;
    }
    
    .video-btn {
        width: 30px !important;
        height: 30px !important;
    }
    
    .video-btn svg {
        width: 16px !important;
        height: 16px !important;
    }
    
    .video-btn.video-play-pause {
        width: 34px !important;
        height: 34px !important;
    }
    
    .video-btn.video-lang {
        padding: 0 8px !important;
        height: 26px !important;
        font-size: 0.65rem !important;
    }
    
    .video-time {
        font-size: 0.6rem !important;
        min-width: 50px !important;
    }
    
    .video-volume {
        width: 30px !important;
    }
    
    .video-divider {
        height: 16px !important;
        margin: 0 2px !important;
    }
}