/* ===========================================
   BotBuilder - Dark Theme Landing Page
   =========================================== */

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    --text-primary: #f0f0f5;
    --text-secondary: #8888a0;
    --accent: #6c5ce7;
    --accent-light: #a29bfe;
    --accent-glow: rgba(108, 92, 231, 0.3);
    --green: #00b894;
    --green-glow: rgba(0, 184, 148, 0.3);
    --gradient-1: linear-gradient(135deg, #6c5ce7, #00cec9);
    --gradient-2: linear-gradient(135deg, #6c5ce7, #fd79a8);
    --border-color: rgba(255, 255, 255, 0.06);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: 0.3s ease;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===========================================
   Navbar - Glassmorphism
   =========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 10px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.4rem;
    font-weight: 700;
}

.logo-icon {
    font-size: 1.6rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
}

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

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

/* Language Switcher */
.lang-switcher {
    display: flex;
    gap: 4px;
    background: var(--bg-card);
    border-radius: 8px;
    padding: 3px;
    border: 1px solid var(--border-color);
}

.lang-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 5px 10px;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font);
}

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

.lang-btn:hover:not(.active) {
    color: var(--text-primary);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===========================================
   Buttons
   =========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font);
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    padding: 12px 28px;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--accent-glow);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    padding: 12px 28px;
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent);
}

.btn-nav {
    background: var(--accent);
    color: white;
    padding: 8px 20px;
    font-size: 0.9rem;
}

.btn-nav:hover {
    background: var(--accent-light);
    color: white;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.05rem;
    border-radius: 14px;
}

.btn-block {
    width: 100%;
    padding: 14px 24px;
}

/* ===========================================
   Hero Section
   =========================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    opacity: 0.4;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    background: rgba(0, 184, 148, 0.1);
    border: 1px solid rgba(0, 184, 148, 0.3);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.9rem;
    color: var(--green);
    font-weight: 600;
    margin-bottom: 24px;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 640px;
    margin: 0 auto 36px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ===========================================
   Section Shared
   =========================================== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 800;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 500px;
    margin: 0 auto;
}

/* ===========================================
   How It Works - Steps
   =========================================== */
.how-it-works {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.step-card {
    text-align: center;
    padding: 40px 28px;
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    overflow: hidden;
}

.step-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(108, 92, 231, 0.2);
    transform: translateY(-4px);
}

.step-number {
    position: absolute;
    top: -10px;
    right: 10px;
    font-size: 6rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.1;
    line-height: 1;
}

.step-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.step-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.step-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===========================================
   Features Section
   =========================================== */
.features {
    padding: 100px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    transition: var(--transition);
}

.feature-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(108, 92, 231, 0.2);
    transform: translateY(-4px);
}

.feature-icon {
    font-size: 2.2rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.6;
}

/* ===========================================
   Demo Section
   =========================================== */
.demo {
    padding: 100px 0;
    background: var(--bg-secondary);
}

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

.demo-workflow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.demo-block {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px 32px;
    min-width: 180px;
    transition: var(--transition);
}

.demo-block:hover {
    transform: translateY(-4px);
}

.demo-trigger {
    border-color: rgba(0, 206, 201, 0.4);
    background: rgba(0, 206, 201, 0.05);
}

.demo-process {
    border-color: rgba(108, 92, 231, 0.4);
    background: rgba(108, 92, 231, 0.05);
}

.demo-action {
    border-color: rgba(0, 184, 148, 0.4);
    background: rgba(0, 184, 148, 0.05);
}

.demo-block-icon {
    font-size: 2rem;
    margin-bottom: 8px;
}

.demo-block-label {
    font-size: 0.9rem;
    font-weight: 600;
}

.demo-arrow {
    font-size: 2rem;
    color: var(--accent-light);
    font-weight: 300;
}

.demo-caption {
    color: var(--text-secondary);
    font-size: 1rem;
    max-width: 500px;
    margin: 0 auto 32px;
    line-height: 1.7;
}

/* ===========================================
   CTA Section
   =========================================== */
.cta-section {
    padding: 100px 0;
}

.cta-box {
    text-align: center;
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.1), rgba(0, 206, 201, 0.1));
    border: 1px solid rgba(108, 92, 231, 0.2);
    border-radius: var(--radius-lg);
    padding: 60px 40px;
}

.cta-box h2 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 800;
    margin-bottom: 16px;
}

.cta-box p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 500px;
    margin: 0 auto 32px;
    line-height: 1.7;
}

/* ===========================================
   Footer
   =========================================== */
.footer {
    padding: 60px 0 30px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 40px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.footer-desc {
    width: 100%;
    margin-top: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* ===========================================
   Responsive
   =========================================== */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: rgba(10, 10, 15, 0.97);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        gap: 24px;
        padding: 40px;
        transition: var(--transition);
        border-left: 1px solid var(--border-color);
    }

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

    .nav-links a {
        font-size: 1.1rem;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .features-grid,
    .steps-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .hero-stats {
        gap: 24px;
    }

    .demo-workflow {
        flex-direction: column;
    }

    .demo-arrow {
        transform: rotate(90deg);
    }

    .footer-content {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }

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

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .cta-box {
        padding: 40px 24px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-buttons .btn {
        width: 100%;
        max-width: 280px;
    }

    .lang-switcher {
        gap: 2px;
    }

    .lang-btn {
        padding: 4px 8px;
        font-size: 0.75rem;
    }

    .demo-block {
        min-width: 140px;
        padding: 20px 16px;
    }
}