/* ============================================
   BollaClaw — Design System
   Inspired by Anthropic/Claude aesthetic
   ============================================ */

:root {
    /* Colors — warm, light, professional */
    --bg-primary: #faf9f5;
    --bg-secondary: #f0efe8;
    --bg-tertiary: #e8e6dc;
    --bg-card: #ffffff;
    --bg-dark: #1a1a19;
    --bg-terminal: #1e1e1e;

    --text-primary: #141413;
    --text-secondary: #4a4a46;
    --text-tertiary: #7a7a72;
    --text-inverse: #faf9f5;

    --accent: #d97757;
    --accent-hover: #c4613f;
    --accent-light: rgba(217, 119, 87, 0.08);
    --accent-border: rgba(217, 119, 87, 0.2);

    --border: rgba(20, 20, 19, 0.08);
    --border-strong: rgba(20, 20, 19, 0.15);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-serif: 'Playfair Display', Georgia, serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;

    /* Spacing */
    --container: 1140px;
    --section-pad: clamp(4rem, 8vw, 7rem);
    --radius: 12px;
    --radius-sm: 8px;
    --radius-xs: 6px;

    /* Transitions */
    --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --duration: 0.2s;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 16px;
}

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 clamp(1.25rem, 4vw, 2.5rem);
}

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

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

code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    background: var(--bg-secondary);
    padding: 0.15em 0.4em;
    border-radius: 4px;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(250, 249, 245, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: background var(--duration) var(--ease);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 1.125rem;
    letter-spacing: -0.02em;
}

.logo-icon {
    width: 32px;
    height: 32px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 450;
    color: var(--text-secondary);
    transition: color var(--duration) var(--ease);
}

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-menu-btn span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--duration) var(--ease);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 100px;
    font-size: 0.9rem;
    font-weight: 500;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: all var(--duration) var(--ease);
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--accent);
    color: white;
    box-shadow: 0 1px 3px rgba(217, 119, 87, 0.3);
}

.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 4px 12px rgba(217, 119, 87, 0.3);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-strong);
}

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

.btn-nav {
    padding: 8px 20px;
    background: var(--text-primary);
    color: var(--text-inverse);
    font-size: 0.85rem;
}

.btn-nav:hover {
    background: var(--text-secondary);
    color: var(--text-inverse);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    padding-top: calc(64px + var(--section-pad));
    padding-bottom: var(--section-pad);
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--accent-light);
    border: 1px solid var(--accent-border);
    border-radius: 100px;
    font-size: 0.825rem;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 2rem;
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero h1 {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 6vw, 4.25rem);
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.hero h1 em {
    font-style: italic;
    color: var(--accent);
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--text-secondary);
    max-width: 620px;
    margin: 0 auto 2.5rem;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Terminal in Hero */
.hero-terminal {
    max-width: 640px;
    margin: 3.5rem auto 0;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12), 0 1px 3px rgba(0, 0, 0, 0.08);
    text-align: left;
}

.terminal-header {
    background: #2d2d2d;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.terminal-dots {
    display: flex;
    gap: 6px;
}

.terminal-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.terminal-dots span:nth-child(1) { background: #ff5f57; }
.terminal-dots span:nth-child(2) { background: #febc2e; }
.terminal-dots span:nth-child(3) { background: #28c840; }

.terminal-title {
    font-size: 0.75rem;
    color: #888;
    font-family: var(--font-mono);
}

.terminal-body {
    background: var(--bg-terminal);
    padding: 20px 24px;
    min-height: 120px;
}

.terminal-line {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

.terminal-prompt {
    color: var(--accent);
    font-weight: 600;
}

.terminal-command {
    color: #e0e0e0;
}

.terminal-cursor {
    color: var(--accent);
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.terminal-output {
    margin-top: 12px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: #9a9a9a;
    line-height: 1.8;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.terminal-output.visible {
    opacity: 1;
}

.terminal-output .success {
    color: #28c840;
}

.terminal-output .info {
    color: var(--accent);
}

/* ============================================
   Trust Section
   ============================================ */
.trust-section {
    padding: 3rem 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.trust-label {
    text-align: center;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-tertiary);
    margin-bottom: 1.5rem;
}

.trust-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-tertiary);
    font-size: 0.9rem;
    font-weight: 450;
}

.trust-item svg {
    opacity: 0.5;
}

/* ============================================
   Section Headers
   ============================================ */
.section-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.section-header h2 {
    font-family: var(--font-serif);
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 540px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ============================================
   Features Grid
   ============================================ */
.features {
    padding: var(--section-pad) 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    transition: all 0.3s var(--ease);
}

.feature-card:hover {
    border-color: var(--accent-border);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
    transform: translateY(-2px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-light);
    border-radius: var(--radius-sm);
    color: var(--accent);
    margin-bottom: 1.25rem;
}

.feature-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.65;
}

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

.steps {
    max-width: 680px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.step {
    display: flex;
    gap: 2rem;
    padding: 2rem 0;
    border-bottom: 1px solid var(--border);
    align-items: flex-start;
}

.step:last-child {
    border-bottom: none;
}

.step-number {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 600;
    color: var(--accent);
    line-height: 1;
    min-width: 48px;
    padding-top: 4px;
}

.step-content h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.step-content p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.65;
}

/* ============================================
   Showcase / Chat Demo
   ============================================ */
.showcase {
    padding: var(--section-pad) 0;
}

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

.showcase-text h2 {
    font-family: var(--font-serif);
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.showcase-text > p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.75rem;
}

.showcase-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.showcase-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* Chat Window */
.chat-window {
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.06);
}

.chat-header-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-primary);
}

.chat-avatar {
    width: 36px;
    height: 36px;
    background: var(--accent);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
}

.chat-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.chat-status {
    font-size: 0.75rem;
    color: #28c840;
}

.chat-messages {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 380px;
}

.chat-msg {
    padding: 12px 16px;
    border-radius: 16px;
    font-size: 0.875rem;
    line-height: 1.6;
    max-width: 85%;
}

.chat-msg.user {
    background: var(--accent);
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

.chat-msg.bot {
    background: var(--bg-secondary);
    color: var(--text-primary);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

.chat-msg.bot strong {
    color: var(--text-primary);
}

.chat-msg.bot code {
    background: rgba(0,0,0,0.06);
    font-size: 0.8rem;
}

/* ============================================
   Integrations
   ============================================ */
.integrations {
    padding: var(--section-pad) 0;
    background: var(--bg-secondary);
}

.integrations-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
}

.integration-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    text-align: center;
    transition: all 0.3s var(--ease);
}

.integration-item:hover {
    border-color: var(--accent-border);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
}

.integration-icon {
    color: var(--accent);
}

.integration-item span {
    font-size: 0.9rem;
    font-weight: 500;
}

.integration-item small {
    font-size: 0.7rem;
    color: var(--accent);
    background: var(--accent-light);
    padding: 2px 8px;
    border-radius: 100px;
    font-weight: 500;
    margin-top: -4px;
}

/* ============================================
   Install Section
   ============================================ */
.install-section {
    padding: var(--section-pad) 0;
}

.install-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: clamp(2rem, 4vw, 3.5rem);
    max-width: 720px;
    margin: 0 auto;
}

.install-code {
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid var(--border-strong);
    margin-bottom: 2rem;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.code-header span {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.copy-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.8rem;
    color: var(--text-tertiary);
    font-family: var(--font-sans);
    transition: color var(--duration) var(--ease);
}

.copy-btn:hover {
    color: var(--accent);
}

.install-code pre {
    background: var(--bg-terminal);
    padding: 20px 24px;
    overflow-x: auto;
}

.install-code code {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: #e0e0e0;
    background: none;
    padding: 0;
    border-radius: 0;
}

.install-requirements h4 {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-tertiary);
    margin-bottom: 1rem;
}

.req-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.req-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
    padding: var(--section-pad) 0;
    text-align: center;
    background: var(--bg-secondary);
}

.cta-section h2 {
    font-family: var(--font-serif);
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.cta-section h2 em {
    font-style: italic;
    color: var(--accent);
}

.cta-section p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--border);
}

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

.footer-brand .logo {
    margin-bottom: 1rem;
}

.footer-brand p {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    line-height: 1.6;
}

.footer-brand a {
    color: var(--accent);
}

.footer-brand a:hover {
    text-decoration: underline;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

.footer-links h4 {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-tertiary);
    margin-bottom: 0.5rem;
}

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

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

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

.footer-bottom p {
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

/* ============================================
   Scroll Animations
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 968px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .showcase-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }

    .integrations-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: rgba(250, 249, 245, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 1.5rem;
        gap: 1rem;
        border-bottom: 1px solid var(--border);
        box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
    }

    .nav-links.active {
        display: flex;
    }

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

    .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);
    }

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

    .integrations-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .step {
        flex-direction: column;
        gap: 0.75rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-actions .btn {
        justify-content: center;
    }

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

    .showcase-chat {
        order: -1;
    }
}

@media (max-width: 480px) {
    .trust-logos {
        gap: 1.5rem;
    }

    .integrations-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.75rem;
    }

    .hero-terminal {
        margin-left: -1rem;
        margin-right: -1rem;
        border-radius: var(--radius-sm);
    }
}