/* --- Design System & CSS Variables --- */
:root {
    /* Colors */
    --color-bg-base: #0A0A0B;
    --color-bg-light: #16181C;
    --color-text-main: #F4F4F5;
    --color-text-muted: #A1A1AA;
    --color-primary: #0088CC; /* Telegram Blue */
    --color-primary-hover: #0077B5;
    --color-accent: #3b82f6;
    --color-success: #10B981;
    --color-danger: #EF4444;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #0088cc 0%, #3b82f6 100%);
    --gradient-text: linear-gradient(to right, #60A5FA, #A78BFA);
    
    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Shadows & Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 40px rgba(0, 136, 204, 0.2);
    
    /* Spacing */
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 4rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
    font-family: var(--font-main);
    background-color: var(--color-bg-base);
    color: var(--color-text-main);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* --- Typography --- */
h1, h2, h3, h4 {
    line-height: 1.2;
    font-weight: 700;
}

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

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--space-sm);
    text-align: center;
}

.section-desc {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--space-xl);
}

/* --- Layout Utilities --- */
.bg-light {
    background-color: var(--color-bg-light);
}

.section-container {
    padding: var(--space-xl) 0;
}

.glass-effect {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition-fast);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 14px rgba(0, 136, 204, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 136, 204, 0.4);
}

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

.btn-outline:hover {
    background: var(--glass-bg);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
    border-radius: 12px;
}

/* Pulsing Animation */
@keyframes pulse {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(0, 136, 204, 0.4); }
    70% { transform: scale(1.02); box-shadow: 0 0 0 15px rgba(0, 136, 204, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(0, 136, 204, 0); }
}

.btn-pulsing {
    animation: pulse 2.5s infinite;
}

/* --- Components --- */

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(10, 10, 11, 0.8);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--glass-border);
    padding: var(--space-sm) 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 42px;
    width: auto;
    border-radius: 8px;
    box-shadow: 0 0 15px rgba(0, 136, 204, 0.2);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

/* Hero Section */
.hero {
    padding-top: 120px;
    padding-bottom: var(--space-xl);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 136, 204, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
    pointer-events: none;
}

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

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-accent);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--space-md);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    letter-spacing: -1px;
    margin-bottom: var(--space-md);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
    max-width: 500px;
}

.trust-markers {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-sm);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.trust-markers span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.icon {
    width: 16px;
    height: 16px;
    color: var(--color-success);
}

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

.mockup-wrapper {
    position: relative;
    padding: 10px;
    border-radius: 40px;
    box-shadow: var(--shadow-glow);
    animation: float 6s ease-in-out infinite;
    max-width: 320px;
}

.mockup-image {
    width: 100%;
    height: auto;
    border-radius: 30px;
    display: block;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0px); }
}

/* Problem Cards */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.card {
    padding: var(--space-lg);
    border-radius: 16px;
    background: var(--color-bg-base);
    border: 1px solid var(--glass-border);
    transition: var(--transition-smooth);
}

.hover-lift:hover {
    transform: translateY(-8px);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: var(--shadow-lg);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
}

.card h3 {
    margin-bottom: var(--space-sm);
    font-size: 1.25rem;
}

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

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--space-lg);
}

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

.feature-icon-wrapper {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 2rem;
}

.feature-text h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

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

/* Use Cases Tabs */
.tabs-container {
    max-width: 800px;
    margin: 0 auto;
}

.tabs-header {
    display: flex;
    overflow-x: auto;
    gap: 0.5rem;
    margin-bottom: var(--space-md);
    padding-bottom: 0.5rem;
    scrollbar-width: none; /* Firefox */
}
.tabs-header::-webkit-scrollbar { display: none; } /* Chrome */

.tab-btn {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--color-text-muted);
    padding: 0.75rem 1.5rem;
    border-radius: 999px;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition-fast);
    white-space: nowrap;
}

.tab-btn:hover {
    background: var(--glass-bg);
}

.tab-btn.active {
    background: var(--color-text-main);
    color: var(--color-bg-base);
    border-color: var(--color-text-main);
}

.tabs-content {
    padding: var(--space-lg);
    min-height: 200px;
}

.tab-pane {
    display: none;
    animation: fadeIn 0.4s ease;
}

.tab-pane.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.tab-pane h3 {
    margin-bottom: var(--space-sm);
    font-size: 1.5rem;
}

.tab-desc {
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.tab-features {
    list-style: none;
    color: var(--color-text-main);
}

.tab-features li {
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Comparison Table */
.table-responsive {
    overflow-x: auto;
    border-radius: 16px;
    padding: 1px; /* To show border */
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-bg-base);
    border-radius: 15px;
}

.comparison-table th, .comparison-table td {
    padding: 1.25rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--glass-border);
}

.comparison-table th {
    font-weight: 600;
    color: var(--color-text-muted);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.comparison-table td strong {
    font-weight: 500;
}

.comparison-table tr:last-child td {
    border-bottom: none;
}

.highlight-col {
    background: rgba(255,255,255, 0.02);
}

.highlight-col.success {
    color: var(--color-success);
    font-weight: 600;
}

/* CTA Section */
.glass-effect-hero {
    background: linear-gradient(135deg, rgba(0, 136, 204, 0.1) 0%, rgba(255, 255, 255, 0.02) 100%);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(0, 136, 204, 0.2);
    border-radius: 24px;
    padding: var(--space-xl) var(--space-md);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.glass-effect-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, rgba(0, 136, 204, 0.2) 0%, transparent 60%);
    pointer-events: none;
}

.cta-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--space-sm);
}

.cta-desc {
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto var(--space-lg);
    font-size: 1.125rem;
}

.cta-footer {
    margin-top: var(--space-md);
    font-size: 0.875rem;
    color: var(--color-text-muted);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.stars {
    letter-spacing: 2px;
}

/* Footer */
.footer {
    border-top: 1px solid var(--glass-border);
    padding: var(--space-lg) 0;
    background: var(--color-bg-base);
}

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

.copyright {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

.footer-links {
    display: flex;
    gap: var(--space-md);
}

.footer-links a {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    transition: var(--transition-fast);
}

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

/* Responsive */
@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

    .hero-subtitle {
        margin: 0 auto var(--space-lg);
    }

    .cta-wrapper {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .trust-markers {
        justify-content: center;
        flex-direction: column;
        gap: 8px;
    }
    
    .hero::before {
        right: auto;
        left: 50%;
        transform: translateX(-50%);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .section-container {
        padding: var(--space-lg) 0;
    }
    
    .footer-container {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    /* Comparison Table Optimization for Pixel 10a */
    .table-responsive {
        background: transparent;
        padding: 0;
    }

    .comparison-table, 
    .comparison-table thead, 
    .comparison-table tbody, 
    .comparison-table th, 
    .comparison-table td, 
    .comparison-table tr {
        display: block;
        width: 100%;
    }

    .comparison-table thead {
        display: none; /* Hide headers on mobile */
    }

    .comparison-table tr {
        margin-bottom: 2rem;
        background: var(--color-bg-light);
        border: 1px solid var(--glass-border);
        border-radius: 20px;
        padding: 1.5rem;
        position: relative;
        overflow: hidden;
        box-shadow: var(--shadow-sm);
    }

    /* Highlight BotListo card visually */
    .comparison-table tr::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 4px;
        height: 100%;
        background: var(--gradient-primary);
    }

    .comparison-table td {
        padding: 0.75rem 0 !important;
        text-align: right;
        border-bottom: 1px solid rgba(255,255,255, 0.05) !important;
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-size: 0.95rem;
    }

    .comparison-table td:first-child {
        border-bottom: 2px solid rgba(255,255,255, 0.1) !important;
        margin-bottom: 0.5rem;
        justify-content: center;
        text-align: center;
        font-size: 1.1rem;
        color: var(--color-text-main);
    }

    .comparison-table td:last-child {
        border-bottom: none !important;
    }

    /* Column Headers via Data Attributes */
    .comparison-table td:not(:first-child)::before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--color-text-muted);
        text-align: left;
        font-size: 0.8rem;
        text-transform: uppercase;
        letter-spacing: 0.05em;
    }

    /* Special Styling for BotListo Column */
    .comparison-table td.highlight-col.success {
        color: var(--color-success);
        font-weight: 700;
    }
}