/* UHeaderBot Guide - Shared Styles */

/* Radix Theme colors */
:root, .dark, .dark-theme {
    --color-background: #111113;
    --color-panel-solid: #18181b;
    --gray-1: #111113;
    --gray-2: #18181b;
    --gray-3: #212225;
    --gray-4: #272a2d;
    --gray-5: #2e3135;
    --gray-6: #363a3f;
    --gray-7: #43484e;
    --gray-8: #5a6169;
    --gray-9: #696e77;
    --gray-10: #7d828a;
    --gray-11: #adb1b8;
    --gray-12: #edeef0;
    --accent-9: #3e63dd;
    --accent-10: #5373e7;
    --accent-11: #849dff;
    --accent-a3: rgba(62, 99, 221, 0.15);
    --accent-a5: rgba(62, 99, 221, 0.25);
}

* {
    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(--gray-1);
    color: var(--gray-12);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

/* Header */
.header {
    background: linear-gradient(135deg, #1e3a5f 0%, #0f1f33 100%);
    padding: 48px 24px;
    text-align: center;
    border-bottom: 1px solid var(--gray-4);
}

.header-logo {
    width: 72px;
    height: 72px;
    background: var(--accent-9);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 36px;
}

.header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.header p {
    color: var(--gray-11);
    font-size: 1rem;
    max-width: 500px;
    margin: 0 auto;
}

.header-cta {
    margin-top: 20px;
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--accent-9);
    color: white;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 500;
    font-size: 14px;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: background 0.15s;
}

.button:hover {
    background: var(--accent-10);
    text-decoration: none;
}

.button-outline {
    background: transparent;
    border: 1px solid var(--gray-6);
    color: var(--gray-11);
}

.button-outline:hover {
    background: var(--gray-3);
    border-color: var(--gray-7);
    color: var(--gray-12);
}

/* Navigation */
.nav {
    background: var(--gray-2);
    padding: 12px 16px;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--gray-4);
}

.nav-inner {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    gap: 6px;
    overflow-x: auto;
    scrollbar-width: none;
    align-items: center;
}

.nav-inner::-webkit-scrollbar {
    display: none;
}

.nav a {
    color: var(--gray-11);
    text-decoration: none;
    padding: 8px 14px;
    border-radius: 6px;
    white-space: nowrap;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.15s;
}

.nav a:hover {
    background: var(--gray-3);
    color: var(--gray-12);
}

.nav a.active {
    background: var(--accent-a3);
    color: var(--accent-11);
}

.nav-divider {
    width: 1px;
    height: 20px;
    background: var(--gray-5);
    margin: 0 8px;
    flex-shrink: 0;
}

/* Container */
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 32px 20px;
}

/* Sections */
section {
    margin-bottom: 48px;
}

h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--gray-12);
    display: flex;
    align-items: center;
    gap: 10px;
}

h2::before {
    content: '';
    width: 4px;
    height: 24px;
    background: var(--accent-9);
    border-radius: 2px;
}

h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 28px 0 12px;
    color: var(--gray-12);
}

p {
    margin-bottom: 14px;
    color: var(--gray-11);
}

/* Intro box */
.intro-box {
    background: var(--gray-2);
    border: 1px solid var(--gray-4);
    border-radius: 12px;
    padding: 20px;
    margin: 20px 0;
}

.intro-box h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--accent-11);
}

.intro-box p {
    margin-bottom: 10px;
}

.intro-box p:last-child {
    margin-bottom: 0;
}

.intro-box ul {
    margin: 0;
    padding-left: 20px;
}

.intro-box li {
    margin-bottom: 6px;
    color: var(--gray-11);
}

/* Steps */
.steps {
    background: var(--gray-2);
    border: 1px solid var(--gray-4);
    border-radius: 12px;
    padding: 16px 20px;
    margin: 16px 0;
}

.steps ol, .steps ul {
    margin: 0;
    padding-left: 20px;
}

.steps li {
    margin-bottom: 10px;
    color: var(--gray-11);
}

.steps li strong {
    color: var(--gray-12);
}

.steps li ul {
    margin-top: 8px;
}

.steps p {
    margin-bottom: 10px;
}

/* Screenshots grid */
.screenshots {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
    margin: 16px 0;
}

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

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

.screenshot {
    background: var(--gray-3);
    border-radius: 10px;
    padding: 12px;
    text-align: center;
}

.screenshot img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.4);
    cursor: zoom-in;
    transition: transform 0.15s, box-shadow 0.15s;
}

.screenshot img:hover {
    transform: scale(1.02);
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
}

.screenshot figcaption {
    margin-top: 8px;
    font-size: 12px;
    color: var(--gray-10);
    font-weight: 500;
}

/* Callouts */
.callout {
    padding: 14px 16px;
    border-radius: 8px;
    margin: 16px 0;
    display: flex;
    gap: 12px;
    align-items: flex-start;
    font-size: 14px;
}

.callout-icon {
    font-size: 18px;
    flex-shrink: 0;
    line-height: 1.4;
}

.callout-warning {
    background: rgba(255, 152, 0, 0.1);
    border: 1px solid rgba(255, 152, 0, 0.25);
}

.callout-info {
    background: var(--accent-a3);
    border: 1px solid var(--accent-a5);
}

.callout-success {
    background: rgba(76, 175, 80, 0.1);
    border: 1px solid rgba(76, 175, 80, 0.25);
}

.callout p {
    margin: 0;
    color: var(--gray-12);
}

.callout p + p {
    margin-top: 8px;
}

/* Links */
a {
    color: var(--accent-11);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Code */
code {
    background: var(--gray-4);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
    font-size: 13px;
}

/* Concept box */
.concept {
    background: linear-gradient(135deg, var(--accent-a3) 0%, rgba(62, 99, 221, 0.05) 100%);
    border: 1px solid var(--accent-a5);
    border-radius: 12px;
    padding: 20px;
    margin: 20px 0;
}

.concept h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--accent-11);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.concept p {
    margin-bottom: 8px;
}

.concept ul {
    margin: 0;
    padding-left: 20px;
}

.concept li {
    margin-bottom: 6px;
    color: var(--gray-11);
}

/* Result box */
.result-box {
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.08) 0%, rgba(62, 99, 221, 0.08) 100%);
    border: 1px solid rgba(76, 175, 80, 0.2);
    border-radius: 12px;
    padding: 24px;
    text-align: center;
}

.result-box h3 {
    color: #4caf50;
    margin-top: 0;
}

/* FAQ */
.faq-item {
    background: var(--gray-2);
    border: 1px solid var(--gray-4);
    border-radius: 10px;
    padding: 16px;
    margin-bottom: 12px;
}

.faq-item h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--gray-12);
}

.faq-item p {
    margin: 0;
    font-size: 14px;
}

/* Page cards */
.page-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    margin: 24px 0;
}

.page-card {
    background: var(--gray-2);
    border: 1px solid var(--gray-4);
    border-radius: 12px;
    padding: 24px;
    text-decoration: none;
    transition: all 0.2s;
}

.page-card:hover {
    border-color: var(--accent-9);
    transform: translateY(-2px);
    text-decoration: none;
}

.page-card-icon {
    font-size: 32px;
    margin-bottom: 12px;
}

.page-card h3 {
    margin: 0 0 8px;
    color: var(--gray-12);
    font-size: 1.1rem;
}

.page-card p {
    margin: 0;
    font-size: 14px;
    color: var(--gray-10);
}

/* Feature grid */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin: 20px 0;
}

.feature-item {
    background: var(--gray-2);
    border: 1px solid var(--gray-4);
    border-radius: 10px;
    padding: 16px;
}

.feature-item h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--gray-12);
}

.feature-item p {
    margin: 0;
    font-size: 13px;
    color: var(--gray-10);
}

/* Footer */
.footer {
    background: var(--gray-2);
    padding: 32px 20px;
    text-align: center;
    border-top: 1px solid var(--gray-4);
}

.footer p {
    color: var(--gray-10);
    font-size: 14px;
}

.footer-links {
    margin-top: 12px;
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--gray-11);
    font-size: 14px;
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.95);
    z-index: 1000;
    cursor: zoom-out;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.lightbox.active {
    display: flex;
}

.lightbox img {
    max-width: 100%;
    max-height: 100%;
    border-radius: 8px;
    object-fit: contain;
}

.lightbox-close {
    position: absolute;
    top: 16px;
    right: 16px;
    color: white;
    font-size: 24px;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-6);
    border-radius: 8px;
    transition: background 0.15s;
}

.lightbox-close:hover {
    background: var(--gray-7);
}

/* Highlight */
.highlight {
    background: rgba(255, 213, 79, 0.15);
    padding: 2px 4px;
    border-radius: 3px;
}

/* Placeholder list */
.placeholder-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin: 16px 0;
}

.placeholder-item {
    background: var(--gray-2);
    border: 1px solid var(--gray-4);
    border-radius: 8px;
    padding: 12px;
}

.placeholder-item code {
    display: block;
    margin-bottom: 4px;
    color: var(--accent-11);
}

.placeholder-item span {
    font-size: 12px;
    color: var(--gray-10);
}

/* Demo video */
.demo-video {
    text-align: center;
    margin: 32px 0;
}

.demo-video video {
    max-width: 280px;
    width: 100%;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.demo-caption {
    margin-top: 12px;
    font-size: 14px;
    color: var(--gray-10);
}

/* Responsive */
@media (max-width: 768px) {
    .header {
        padding: 32px 16px;
    }

    .header h1 {
        font-size: 1.6rem;
    }

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

    h2 {
        font-size: 1.3rem;
    }

    .page-cards {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .screenshots.two,
    .screenshots.three {
        grid-template-columns: 1fr;
    }

    .nav a {
        padding: 6px 10px;
        font-size: 12px;
    }

    .screenshot {
        padding: 10px;
    }

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

/* Print */
@media print {
    .nav, .lightbox, .header-cta {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    .steps, .faq-item, .callout, .intro-box, .concept {
        background: #f5f5f5 !important;
        border-color: #ddd !important;
    }

    .screenshot img {
        max-width: 160px;
    }

    a {
        color: #3e63dd;
    }
}