/* Modern Landing Page Styles - Messaging Platform SDK */

/* ===== CSS Variables & Reset ===== */
:root {
    --color-bg: #ffffff;
    --color-bg-secondary: #f8fafc;
    --color-surface: #ffffff;
    --color-border: #e2e8f0;
    --color-text: #0f172a;
    --color-text-secondary: #475569;
    --color-text-muted: #64748b;
    --color-primary: #4f46e5;
    --color-primary-hover: #4338ca;
    --color-accent: #06b6d4;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #0f172a;
        --color-bg-secondary: #1e293b;
        --color-surface: #1e293b;
        --color-border: #334155;
        --color-text: #f1f5f9;
        --color-text-secondary: #cbd5e1;
        --color-text-muted: #94a3b8;
    }
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== UI Switcher ===== */
.ui-switcher {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1000;
}

.ui-back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
}

.ui-back-link:hover {
    background: var(--color-bg-secondary);
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

/* ===== Container ===== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
}

/* ===== Hero Section ===== */
.hero {
    padding: 6rem 0 4rem;
    text-align: center;
}

@media (max-width: 768px) {
    .hero {
        padding: 4rem 0 3rem;
    }
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.badges-row {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.025em;
}

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: var(--color-warning);
}

.badge-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--color-success);
}

.badge-primary {
    background: rgba(79, 70, 229, 0.1);
    border: 1px solid rgba(79, 70, 229, 0.3);
    color: var(--color-primary);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.title-highlight {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.25rem;
    }
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 1rem;
}

@media (max-width: 768px) {
    .hero-subtitle {
        font-size: 1.25rem;
    }
}

.hero-description {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 768px) {
    .hero-description {
        font-size: 1rem;
    }
}

.language-badges {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.lang-badge {
    padding: 0.5rem 1rem;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
}

.cta-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.btn-group-secondary {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    justify-content: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
}

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

.btn-primary:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: var(--color-bg-secondary);
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

.btn-outline:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9375rem;
    }
}

.hero-note {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* ===== Section Styles ===== */
.section {
    padding: 5rem 0;
}

@media (max-width: 768px) {
    .section {
        padding: 3rem 0;
    }
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

@media (max-width: 768px) {
    .section-title {
        font-size: 1.875rem;
    }
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    text-align: center;
    margin-bottom: 3rem;
}

/* ===== Demos Section ===== */
.demos-section {
    background: var(--color-bg-secondary);
}

.demos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

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

.demo-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 2rem;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.demo-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
    border-color: var(--color-primary);
}

.demo-card-featured {
    border-color: var(--color-primary);
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.05) 0%, rgba(6, 182, 212, 0.05) 100%);
}

.demo-card-more {
    border: 2px dashed var(--color-border);
    justify-content: center;
    align-items: center;
    text-align: center;
}

.demo-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.demo-icon {
    width: 3.5rem;
    height: 3.5rem;
    font-size: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    transition: transform 0.3s ease;
}

.demo-card:hover .demo-icon {
    transform: scale(1.1) rotate(5deg);
}

.demo-tag {
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-sm);
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--color-bg-secondary);
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
}

.demo-tag-featured {
    background: rgba(79, 70, 229, 0.1);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.demo-tag-game {
    background: rgba(245, 158, 11, 0.1);
    border-color: var(--color-warning);
    color: var(--color-warning);
}

.demo-tag-tool {
    background: rgba(6, 182, 212, 0.1);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.demo-tag-experimental {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.demo-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--color-text);
}

.demo-description {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    margin-bottom: 1rem;
    flex-grow: 1;
    line-height: 1.6;
}

.demo-tech {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.tech-tag {
    padding: 0.25rem 0.625rem;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.demo-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9375rem;
    transition: all 0.2s ease;
}

.demo-link:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(4px);
}

/* ===== Quick Start Section ===== */
.quick-start-section {
    background: var(--color-bg);
}

.quick-start-steps {
    max-width: 900px;
    margin: 0 auto 3rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.step-card {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

@media (max-width: 768px) {
    .step-card {
        flex-direction: column;
    }
}

.step-number {
    flex-shrink: 0;
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
}

.step-content {
    flex-grow: 1;
}

.step-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--color-text);
}

.code-block {
    position: relative;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.copy-button {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 0.75rem;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.copy-button:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.copy-button.copied {
    background: var(--color-success);
    color: white;
    border-color: var(--color-success);
}

pre {
    padding: 1.5rem;
    padding-right: 6rem;
    overflow-x: auto;
    font-family: "Monaco", "Menlo", "Ubuntu Mono", "Consolas", "source-code-pro", monospace;
    font-size: 0.875rem;
    line-height: 1.7;
    margin: 0;
}

code {
    font-family: inherit;
    color: var(--color-text);
}

/* Syntax Highlighting */
.comment { color: #6b7280; font-style: italic; }
.tag { color: #c084fc; }
.attr { color: #60a5fa; }
.string { color: #34d399; }
.keyword { color: #c084fc; font-weight: 600; }
.function { color: #60a5fa; }
.property { color: #f472b6; }
.number { color: #fbbf24; }

@media (prefers-color-scheme: dark) {
    .comment { color: #6b7280; }
    .tag { color: #c084fc; }
    .attr { color: #60a5fa; }
    .string { color: #34d399; }
    .keyword { color: #c084fc; }
    .function { color: #60a5fa; }
    .property { color: #f472b6; }
    .number { color: #fbbf24; }
}

.quick-start-footer {
    text-align: center;
}

/* ===== Architecture Section ===== */
.architecture-section {
    background: var(--color-bg-secondary);
}

.architecture-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

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

.arch-icon {
    width: 4rem;
    height: 4rem;
    font-size: 2.5rem;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.arch-feature h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--color-text);
}

.arch-feature p {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

.architecture-details {
    max-width: 900px;
    margin: 0 auto;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.architecture-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1.25rem 2rem;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    color: var(--color-text);
    background: var(--color-bg-secondary);
    transition: all 0.2s ease;
    list-style: none;
}

.architecture-toggle::-webkit-details-marker {
    display: none;
}

.architecture-toggle:hover {
    background: var(--color-surface);
    color: var(--color-primary);
}

.architecture-toggle svg {
    transition: transform 0.3s ease;
}

details[open] .architecture-toggle svg {
    transform: rotate(180deg);
}

.architecture-content {
    padding: 2rem;
    border-top: 1px solid var(--color-border);
}

.arch-diagram {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.arch-diagram h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--color-text);
}

.diagram-text {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    overflow-x: auto;
}

.diagram-text code {
    font-family: "Monaco", "Menlo", "Ubuntu Mono", "Consolas", monospace;
    font-size: 0.8125rem;
    line-height: 1.5;
    color: var(--color-text);
}

.arch-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.arch-feature-detail {
    padding: 1.25rem;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.arch-feature-detail h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.arch-feature-detail p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

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

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

.footer-section {
}

.footer-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--color-text);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: color 0.2s ease;
}

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

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

.footer-disclaimer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-warning);
    margin-bottom: 1rem;
    padding: 1rem;
    background: rgba(245, 158, 11, 0.05);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: var(--radius-md);
}

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

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (prefers-reduced-motion: no-preference) {
    .hero-content,
    .demo-card {
        animation: fadeInUp 0.6s ease-out;
    }

    .demo-card:nth-child(1) { animation-delay: 0.05s; }
    .demo-card:nth-child(2) { animation-delay: 0.1s; }
    .demo-card:nth-child(3) { animation-delay: 0.15s; }
    .demo-card:nth-child(4) { animation-delay: 0.2s; }
    .demo-card:nth-child(5) { animation-delay: 0.25s; }
    .demo-card:nth-child(6) { animation-delay: 0.3s; }
    .demo-card:nth-child(7) { animation-delay: 0.35s; }
}

/* ===== Accessibility ===== */
:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ===== Print Styles ===== */
@media print {
    .ui-switcher,
    .btn,
    .demo-link,
    .footer {
        display: none;
    }
}

/* ===== Tabbed Navigation Styles ===== */
.tabs-navigation {
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.nav-tabs {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.nav-tab {
    padding: 0.75rem 1.5rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    font-size: 0.875rem;
}

.nav-tab:hover {
    background: var(--color-bg);
    border-color: var(--color-primary);
    color: var(--color-text);
    transform: translateY(-2px);
}

.nav-tab.active {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    border-color: var(--color-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.tab-container {
    min-height: 60vh;
}

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

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

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

/* ===== Code Examples Styles ===== */
.code-examples-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.code-example-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.code-example-card h3 {
    margin-bottom: 1rem;
    color: var(--color-text);
    font-size: 1.125rem;
}

.code-example-card pre {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1rem;
    overflow-x: auto;
    font-family: 'Courier New', Consolas, Monaco, monospace;
    font-size: 0.875rem;
    line-height: 1.6;
}

.code-example-card code {
    color: var(--color-text);
}

/* ===== Features List Styles ===== */
.features-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.feature-icon {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.feature-item h3 {
    margin-bottom: 0.5rem;
    color: var(--color-text);
    font-size: 1.125rem;
}

.feature-item p {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    line-height: 1.6;
}

/* ===== Architecture Features Grid ===== */
.arch-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.arch-feature-detail {
    padding: 1.5rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.arch-feature-detail h4 {
    margin-bottom: 0.75rem;
    color: var(--color-text);
    font-size: 1.125rem;
}

.arch-feature-detail p {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    line-height: 1.6;
}

/* ===== Status & Roadmap Styles ===== */
.status-card {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
}

.status-list ul {
    list-style: none;
    padding: 0;
}

.status-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
}

.status-list li:last-child {
    border-bottom: none;
}

.roadmap-timeline {
    position: relative;
}

.roadmap-item {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 2rem;
}

.roadmap-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: -2rem;
    width: 2px;
    background: var(--color-border);
}

.roadmap-item:last-child::before {
    display: none;
}

.roadmap-item h3 {
    margin-bottom: 0.75rem;
    color: var(--color-text);
}

.roadmap-item ul {
    list-style: none;
    padding-left: 1rem;
}

.roadmap-item li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
}

.roadmap-item li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

/* ===== Responsive Adjustments ===== */
@media (max-width: 768px) {
    .nav-tabs {
        flex-direction: column;
        gap: 0.5rem;
    }

    .nav-tab {
        width: 100%;
        text-align: center;
    }

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

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