/* ========================================
   RoomKit Website Styles
   ======================================== */

:root {
    /* Colors */
    --color-primary: #6366f1;
    --color-primary-dark: #4f46e5;
    --color-primary-light: #818cf8;
    --color-secondary: #1e293b;
    --color-accent: #06b6d4;

    --color-bg: #0f172a;
    --color-bg-secondary: #1e293b;
    --color-bg-tertiary: #334155;

    --color-text: #f1f5f9;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;

    --color-border: #334155;
    --color-border-light: #475569;

    /* Code colors */
    --code-bg: #1e293b;
    --code-kw: #c084fc;
    --code-fn: #22d3ee;
    --code-st: #86efac;
    --code-cm: #64748b;
    --code-decorator: #fbbf24;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Borders */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    background: var(--color-bg-secondary);
    padding: 0.125em 0.375em;
    border-radius: var(--radius-sm);
}

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

/* ========================================
   Navigation
   ======================================== */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-md) var(--space-lg);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--color-text);
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--color-primary);
}

.nav-links {
    display: flex;
    gap: var(--space-xl);
}

.nav-link {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--color-text);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 1px;
    transition: 0.2s;
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
}

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

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

.btn-lg {
    padding: var(--space-md) var(--space-xl);
    font-size: 1rem;
}

/* Badge */
.badge {
    display: inline-flex;
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.75rem;
    font-weight: 500;
    background: rgba(99, 102, 241, 0.15);
    color: var(--color-primary-light);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(99, 102, 241, 0.25);
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
    position: relative;
    padding: 8rem 0 6rem;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, 0.15), transparent);
    pointer-events: none;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.hero-badge {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    max-width: 540px;
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.hero-install {
    display: inline-flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.hero-install code {
    background: none;
    padding: 0;
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
}

.copy-btn {
    display: flex;
    padding: var(--space-xs);
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: color 0.2s;
}

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

/* Code Window */
.code-window {
    background: var(--code-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.code-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    background: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid var(--color-border);
}

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

.code-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-bg-tertiary);
}

.code-dots span:nth-child(1) { background: #ef4444; }
.code-dots span:nth-child(2) { background: #eab308; }
.code-dots span:nth-child(3) { background: #22c55e; }

.code-filename {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.code-content {
    margin: 0;
    padding: var(--space-lg);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.7;
    overflow-x: auto;
}

.code-content code {
    background: none;
    padding: 0;
}

/* Syntax highlighting */
.kw { color: var(--code-kw); }
.fn { color: var(--code-fn); }
.st { color: var(--code-st); }
.cm { color: var(--code-cm); font-style: italic; }
.decorator { color: var(--code-decorator); }

/* ========================================
   Sections
   ======================================== */

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.section-description {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   Why RoomKit Section
   ======================================== */

.why-section {
    padding: var(--space-3xl) 0;
    background: var(--color-bg-secondary);
}

.why-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
}

.why-column h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-border);
}

.why-column.problems h3 {
    color: #f87171;
}

.why-column.solutions h3 {
    color: #4ade80;
}

.why-item {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.why-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
    border-radius: 50%;
}

.why-item.problem .why-icon {
    background: rgba(248, 113, 113, 0.15);
    color: #f87171;
}

.why-item.solution .why-icon {
    background: rgba(74, 222, 128, 0.15);
    color: #4ade80;
}

.why-item strong {
    display: block;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.why-item p {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.5;
    margin: 0;
}

/* ========================================
   Comparison Section
   ======================================== */

.comparison-section {
    padding: var(--space-3xl) 0;
}

.comparison-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-3xl);
}

.comparison-card {
    padding: var(--space-lg);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.comparison-card h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.comparison-examples {
    display: block;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.comparison-card p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.5;
}

.comparison-verdict {
    font-size: 0.8125rem;
    padding: var(--space-sm) var(--space-md);
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-primary-light);
}

.comparison-verdict strong {
    display: block;
    margin-bottom: var(--space-xs);
    color: var(--color-text);
}

.comparison-table-wrapper {
    overflow-x: auto;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

.comparison-table th,
.comparison-table td {
    padding: var(--space-md);
    text-align: center;
    border-bottom: 1px solid var(--color-border);
}

.comparison-table th:first-child,
.comparison-table td:first-child {
    text-align: left;
    font-weight: 500;
}

.comparison-table th {
    font-weight: 600;
    color: var(--color-text);
    background: var(--color-bg-secondary);
}

.comparison-table th:nth-child(2) {
    color: var(--color-primary-light);
}

.comparison-table td.yes {
    color: #4ade80;
    font-weight: 600;
}

.comparison-table td.no {
    color: #f87171;
}

.comparison-table td.partial {
    color: #fbbf24;
}

.comparison-table tbody tr:hover {
    background: rgba(99, 102, 241, 0.05);
}

@media (max-width: 1024px) {
    .why-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

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

@media (max-width: 768px) {
    .comparison-cards {
        grid-template-columns: 1fr;
    }

    .comparison-table {
        font-size: 0.8125rem;
    }

    .comparison-table th,
    .comparison-table td {
        padding: var(--space-sm);
    }
}

/* ========================================
   Features Section
   ======================================== */

.features {
    padding: var(--space-3xl) 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.feature-card {
    padding: var(--space-xl);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all 0.3s;
}

.feature-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(99, 102, 241, 0.1);
}

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: rgba(99, 102, 241, 0.15);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-primary-light);
}

.feature-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.feature-card p {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ========================================
   Channels Section
   ======================================== */

.channels {
    padding: var(--space-3xl) 0;
    background: var(--color-bg-secondary);
}

.channels-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-md);
}

.channel-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-lg);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all 0.2s;
}

.channel-card:hover {
    border-color: var(--color-border-light);
    transform: translateY(-2px);
}

.channel-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: var(--radius-md);
    color: white;
}

.channel-icon.sms { background: linear-gradient(135deg, #22c55e, #16a34a); }
.channel-icon.email { background: linear-gradient(135deg, #3b82f6, #2563eb); }
.channel-icon.ai { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }
.channel-icon.ws { background: linear-gradient(135deg, #f59e0b, #d97706); }
.channel-icon.rcs { background: linear-gradient(135deg, #06b6d4, #0891b2); }
.channel-icon.http { background: linear-gradient(135deg, #ec4899, #db2777); }

.channel-card span {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

/* ========================================
   Examples Section
   ======================================== */

.examples {
    padding: var(--space-3xl) 0;
}

.examples-tabs {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}

.tab {
    padding: var(--space-sm) var(--space-lg);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 500;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.tab:hover {
    color: var(--color-text);
    border-color: var(--color-border-light);
}

.tab.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.examples-content {
    max-width: 800px;
    margin: 0 auto;
}

.example-panel {
    display: none;
}

.example-panel.active {
    display: block;
}

.example-panel .code-content {
    padding: var(--space-xl);
}

/* ========================================
   AI Section
   ======================================== */

.ai-section {
    padding: var(--space-3xl) 0;
    background: var(--color-bg-secondary);
}

.ai-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.ai-text h2 {
    font-size: 2rem;
    font-weight: 700;
    margin: var(--space-md) 0;
}

.ai-text p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

.ai-features {
    list-style: none;
    margin-bottom: var(--space-xl);
}

.ai-features li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
    color: var(--color-text-secondary);
}

.ai-features svg {
    width: 20px;
    height: 20px;
    color: var(--color-accent);
    flex-shrink: 0;
}

/* ========================================
   MCP Section
   ======================================== */

.mcp-section {
    padding: var(--space-3xl) 0;
}

.mcp-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.mcp-text h2 {
    font-size: 2rem;
    font-weight: 700;
    margin: var(--space-md) 0;
}

.mcp-text p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

.mcp-features {
    list-style: none;
    margin-bottom: var(--space-xl);
}

.mcp-features li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
    color: var(--color-text-secondary);
}

.mcp-features svg {
    width: 20px;
    height: 20px;
    color: var(--color-accent);
    flex-shrink: 0;
}

.badge-mcp {
    background: rgba(6, 182, 212, 0.15);
    color: var(--color-accent);
    border-color: rgba(6, 182, 212, 0.25);
}

/* MCP Chat Demo */
.mcp-demo {
    width: 100%;
}

.mcp-chat {
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.mcp-message {
    max-width: 95%;
}

.mcp-message.user {
    align-self: flex-end;
}

.mcp-message.assistant {
    align-self: flex-start;
}

.mcp-role {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.mcp-message.user .mcp-role {
    text-align: right;
}

.mcp-message p {
    background: var(--color-bg-tertiary);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    margin: 0 0 var(--space-sm) 0;
}

.mcp-message.user p {
    background: var(--color-primary);
    color: white;
}

.mcp-tool-call {
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.2);
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
    margin-bottom: var(--space-sm);
}

.tool-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: var(--space-xs);
}

.mcp-tool-call code {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    word-break: break-all;
}

@media (max-width: 1024px) {
    .mcp-content {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
}

/* ========================================
   CTA Section
   ======================================== */

.cta {
    padding: var(--space-3xl) 0;
    text-align: center;
}

.cta h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.cta p {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
}

/* ========================================
   Footer
   ======================================== */

.footer {
    padding: var(--space-3xl) 0 var(--space-xl);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-2xl);
}

.footer-brand p {
    color: var(--color-text-muted);
    margin-top: var(--space-md);
    max-width: 300px;
}

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

.footer-column h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.footer-column a {
    display: block;
    padding: var(--space-xs) 0;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    transition: color 0.2s;
}

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

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

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .hero-title {
        font-size: 2.5rem;
    }

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

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

    .ai-content {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-actions {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .hero {
        padding: 6rem 0 4rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-actions {
        flex-direction: column;
    }

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

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

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

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

    .section-title {
        font-size: 2rem;
    }

    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .channels-grid {
        grid-template-columns: 1fr 1fr;
    }

    .hero-badge {
        flex-wrap: wrap;
    }

    .examples-tabs {
        flex-wrap: wrap;
    }
}