/* ==========================================================================
   CSS Variables & Theming
   ========================================================================== */
   :root {
    --primary: #2AABEE; /* Telegram Blue */
    --primary-dark: #229ED9;
    --secondary: #6366f1; /* Deep Purple */
    --bg-dark: #0f172a;
    --bg-card: rgba(30, 41, 59, 0.7);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent: #22c55e; /* WhatsApp Green */
    --accent-hover: #16a34a;
    --border-color: rgba(255, 255, 255, 0.1);
    
    --font-main: 'Inter', sans-serif;
    
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    
    --shadow-glow: 0 0 30px rgba(42, 171, 238, 0.3);
    --transition: all 0.3s ease;
}

/* ==========================================================================
   Reset & Global Styles
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(42, 171, 238, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 85% 30%, rgba(99, 102, 241, 0.08) 0%, transparent 50%);
    background-attachment: fixed;
}

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

/* ==========================================================================
   Typography
   ========================================================================== */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-main);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #fff 0%, #a5b4fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

h2 {
    font-size: clamp(2rem, 3vw, 2.5rem);
}

h3 {
    font-size: 1.5rem;
}

p {
    color: var(--text-muted);
    margin-bottom: 1rem;
}

/* ==========================================================================
   Components
   ========================================================================== */
.glass {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 40px rgba(42, 171, 238, 0.5);
}

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

.btn-secondary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* ==========================================================================
   Navbar
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1rem 0;
    z-index: 100;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
}

.logo-icon {
    color: var(--primary);
    font-size: 1.8rem;
}

.navbar nav {
    display: flex;
    gap: 2rem;
}

.navbar nav a {
    color: var(--text-muted);
    font-weight: 500;
}

.navbar nav a:hover {
    color: white;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    padding: 160px 0 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: rgba(42, 171, 238, 0.1);
    color: var(--primary);
    border: 1px solid rgba(42, 171, 238, 0.2);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.125rem;
    margin-bottom: 2.5rem;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.trust-indicators {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.avatars {
    display: flex;
}

.avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid var(--bg-dark);
    margin-left: -12px;
}

.avatar:first-child {
    margin-left: 0;
}

.avatar.more {
    background: var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
    z-index: 1;
}

.hero-image-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.hero-image {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    border: 1px solid var(--border-color);
    position: relative;
    z-index: 2;
    object-fit: contain;
    background-color: var(--bg-card); /* Placeholder while loading */
}

.glow-effect {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 80%;
    background: radial-gradient(circle, var(--primary) 0%, transparent 60%);
    opacity: 0.4;
    filter: blur(60px);
    z-index: 1;
}

/* ==========================================================================
   Features Section
   ========================================================================== */
.features {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.feature-card {
    padding: 2.5rem;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: rgba(42, 171, 238, 0.3);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: rgba(42, 171, 238, 0.1);
    color: var(--primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

/* ==========================================================================
   Video Section
   ========================================================================== */
.video-section {
    padding: 80px 0;
}

.video-wrapper {
    display: flex;
    justify-content: center;
    margin-top: 2rem;
}

.video-wrapper iframe,
.video-wrapper video {
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    border: 1px solid var(--border-color);
    max-width: 100%;
}

.play-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 64px;
    height: 64px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 0 0 0 rgba(42, 171, 238, 0.7);
    animation: pulse-play 2s infinite;
    z-index: 10;
    transition: var(--transition);
}

.play-overlay:hover {
    background: var(--primary-dark);
    transform: translate(-50%, -50%) scale(1.1);
}

@keyframes pulse-play {
    0% {
        box-shadow: 0 0 0 0 rgba(42, 171, 238, 0.7);
    }
    70% {
        box-shadow: 0 0 0 20px rgba(42, 171, 238, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(42, 171, 238, 0);
    }
}

/* ==========================================================================
   Demo Slider Section
   ========================================================================== */
.demo-section {
    padding: 80px 0;
    overflow: hidden;
}

.slider-container {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    background: var(--bg-card);
    padding: 10px;
}

.slider-track {
    display: flex;
    transition: transform 0.5s ease-in-out;
    width: 100%;
}

.slide {
    min-width: 100%;
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--bg-dark);
}

.slide img {
    width: 100%;
    height: auto;
    max-height: 600px;
    object-fit: contain;
}

.slider-dots {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border-color);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: var(--primary);
    transform: scale(1.2);
}

/* ==========================================================================
   Reviews Section
   ========================================================================== */
.reviews {
    padding: 80px 0;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.review-card {
    padding: 2.5rem;
    border-radius: var(--radius-md);
}

.stars {
    color: #f59e0b; /* Amber/Yellow for stars */
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.review-text {
    font-size: 1.05rem;
    color: var(--text-main);
    font-style: italic;
    margin-bottom: 2rem;
}

.reviewer {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.reviewer-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: white;
}

.reviewer-info h4 {
    margin: 0;
    font-size: 1rem;
}

.reviewer-info span {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ==========================================================================
   Final CTA
   ========================================================================== */
.final-cta {
    padding: 80px 0;
}

.cta-box {
    padding: 4rem 2rem;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.9) 0%, rgba(15, 23, 42, 0.9) 100%);
    border: 1px solid rgba(42, 171, 238, 0.2);
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(42, 171, 238, 0.1) 0%, transparent 50%);
    z-index: 0;
}

.cta-box > * {
    position: relative;
    z-index: 1;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */
footer {
    background: #0b1120;
    padding: 60px 0 20px;
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand p {
    margin-top: 1rem;
    max-width: 300px;
}

.footer-links, .footer-contact {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-links a, .footer-contact p {
    color: var(--text-muted);
}

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

.footer-contact i {
    color: var(--primary);
    width: 20px;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 900px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-subtitle {
        margin: 0 auto 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .trust-indicators {
        justify-content: center;
        margin-bottom: 3rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .navbar nav {
        display: none; /* simple mobile hide for now */
    }
}

@media (max-width: 600px) {
    .cta-actions {
        flex-direction: column;
    }
    
    h1 {
        font-size: 2.5rem;
    }
}