/* ── SAO AUTH Examples — Dark Theme ──────────────────────────────────────── */

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

/* ── Variables (always dark) ─────────────────────────────────────────────── */
:root {
    --bg-primary:   #0a0f1e;
    --bg-secondary: #0f172a;
    --bg-card:      #111827;
    --bg-deep:      #070d1a;
    --text-primary: #f1f5f9;
    --text-muted:   #94a3b8;
    --border:       #1e293b;
    --border-light: #263348;
    --accent:       #22d3ee;
    --accent-green: #4ade80;
    --shadow:       rgba(0, 0, 0, 0.5);
    --mono:         'Courier New', 'Consolas', monospace;
}

/* ── Base ────────────────────────────────────────────────────────────────── */
html { scroll-behavior: smooth; }

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

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

/* ── Header ──────────────────────────────────────────────────────────────── */
.main-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem 0 2rem;
}

.header-content {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.header-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.controls-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* ── Logo ────────────────────────────────────────────────────────────────── */
.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.saoauth-icon {
    width: 52px;
    height: 52px;
    border-radius: 10px;
    background: transparent;
    padding: 0;
    display: block;
    object-fit: contain;
}

.logo-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.header-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.1;
    letter-spacing: -0.5px;
}

.logo-subtitle {
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.header-subtitle {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin: 0;
    padding-left: 2px;
}

/* ── Gradient title ──────────────────────────────────────────────────────── */
.title-gradient {
    background: linear-gradient(90deg, #22d3ee 0%, #4ade80 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ── Return Button ───────────────────────────────────────────────────────── */
.return-button-container {
    margin: 0;
}

.btn-return-main {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(34, 211, 238, 0.08);
    color: var(--accent);
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    border: 1px solid rgba(34, 211, 238, 0.25);
    transition: all 0.2s ease;
}

.btn-return-main:hover {
    background: rgba(34, 211, 238, 0.15);
    border-color: var(--accent);
    transform: translateY(-1px);
}

.btn-icon { font-size: 1rem; }
.btn-text { font-weight: 700; }

/* ── Language Toggle ─────────────────────────────────────────────────────── */
.lang-toggle {
    display: flex;
    align-items: center;
    background: var(--bg-deep);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    padding: 3px;
    gap: 2px;
}

.lang-toggle-btn {
    padding: 0.35rem 0.75rem;
    border-radius: 5px;
    font-size: 0.8rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--text-muted);
    transition: all 0.15s ease;
    letter-spacing: 0.5px;
}

.lang-toggle-btn:hover {
    color: var(--text-primary);
    background: rgba(255,255,255,0.05);
}

.lang-toggle-btn.active {
    background: linear-gradient(135deg, rgba(34,211,238,0.15), rgba(74,222,128,0.1));
    color: var(--accent);
    border: 1px solid rgba(34,211,238,0.3);
}

/* ── Navigation ──────────────────────────────────────────────────────────── */
.main-nav {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-tabs {
    display: flex;
    gap: 0.25rem;
    padding: 0.75rem 0;
    overflow-x: auto;
    scrollbar-width: none;
}

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

.nav-tab {
    background: transparent;
    border: none;
    padding: 0.6rem 1.25rem;
    font-size: 0.9rem;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.2s ease;
    font-weight: 600;
    white-space: nowrap;
    cursor: pointer;
}

.nav-tab:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.nav-tab.active {
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.15), rgba(74, 222, 128, 0.1));
    color: var(--accent);
    border-bottom: 2px solid var(--accent);
}

/* ── Main Content ────────────────────────────────────────────────────────── */
.main-content {
    padding: 2.5rem 0 4rem;
}

.content-section {
    display: none;
}

.content-section.active {
    display: block;
    animation: fadeIn 0.3s ease-out;
}

.content-section > h2 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ── Cards / Panels ──────────────────────────────────────────────────────── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
}

/* ── API Config ──────────────────────────────────────────────────────────── */
.api-config-section {
    margin-bottom: 2rem;
}

.api-config-section h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-weight: 600;
}

.api-config-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 0 1.5rem;
    margin-bottom: 2rem;
}

.config-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.875rem 0;
    border-bottom: 1px solid var(--border);
    gap: 1rem;
    flex-wrap: wrap;
}

.config-item:last-child { border-bottom: none; }

.config-item strong {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.config-item code {
    background: var(--bg-deep);
    color: var(--accent);
    padding: 0.3rem 0.6rem;
    border-radius: 6px;
    font-family: var(--mono);
    font-size: 0.875rem;
    border: 1px solid var(--border);
}

.config-item span {
    color: var(--text-primary);
    font-family: var(--mono);
    font-size: 0.875rem;
}

/* ── Steps ───────────────────────────────────────────────────────────────── */
.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 1.25rem;
    margin-top: 1.5rem;
}

.step-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    transition: border-color 0.2s ease, transform 0.2s ease;
}

.step-card:hover {
    transform: translateY(-3px);
    border-color: var(--border-light);
}

.step-number {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.15), rgba(74, 222, 128, 0.1));
    border: 1px solid rgba(34, 211, 238, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 800;
    color: var(--accent);
    margin: 0 auto 1rem;
}

.step-card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.step-card p {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

/* ── API Reference ───────────────────────────────────────────────────────── */
.api-endpoint {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.api-endpoint h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
    font-weight: 700;
    margin-bottom: 1rem;
}

.endpoint-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.method {
    background: rgba(74, 222, 128, 0.1);
    color: var(--accent-green);
    border: 1px solid rgba(74, 222, 128, 0.3);
    padding: 0.4rem 0.875rem;
    border-radius: 6px;
    font-weight: 700;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.url {
    font-family: var(--mono);
    background: var(--bg-deep);
    color: var(--accent);
    border: 1px solid var(--border);
    padding: 0.4rem 0.875rem;
    border-radius: 6px;
    flex: 1;
    font-size: 0.875rem;
    word-break: break-all;
}

.endpoint-details h4 {
    font-size: 0.95rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.75rem;
}

.endpoint-details ul {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-bottom: 1.25rem;
}

.endpoint-details li {
    background: var(--bg-deep);
    border: 1px solid var(--border);
    padding: 0.5rem 0.875rem;
    border-radius: 6px;
    font-family: var(--mono);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.endpoint-details li code {
    color: var(--accent);
    font-weight: 600;
}

/* ── Language Tabs (Code Examples) ──────────────────────────────────────── */
.language-tabs {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    background: var(--bg-deep);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0.375rem;
}

.lang-tab {
    background: transparent;
    border: none;
    padding: 0.5rem 1.1rem;
    border-radius: 7px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
}

.lang-tab:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.04);
}

.lang-tab.active {
    background: var(--bg-card);
    color: var(--accent);
    box-shadow: 0 1px 4px rgba(0,0,0,0.4);
}

/* ── Code Examples ───────────────────────────────────────────────────────── */
.code-examples-container { position: relative; }

.code-example { display: none; }
.code-example.active { display: block; }

.code-example h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.code-block {
    background: var(--bg-deep);
    color: #c9d1d9;
    padding: 1.5rem;
    border-radius: 10px;
    overflow-x: auto;
    font-family: var(--mono);
    font-size: 0.875rem;
    line-height: 1.7;
    border: 1px solid var(--border);
    position: relative;
    white-space: pre;
}

/* ── Download Grid ───────────────────────────────────────────────────────── */
.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem;
    margin-top: 1.5rem;
}

.download-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.75rem;
    text-align: center;
    transition: border-color 0.2s ease, transform 0.2s ease;
}

.download-card:hover {
    transform: translateY(-3px);
    border-color: var(--border-light);
}

.download-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.6rem;
}

.download-card p {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 1.25rem;
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
    display: inline-block;
    padding: 0.65rem 1.4rem;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-green));
    color: #0a0f1e;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(34, 211, 238, 0.25);
    opacity: 0.92;
}

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

.btn-secondary:hover {
    background: var(--border);
}

/* ── Footer ──────────────────────────────────────────────────────────────── */
.main-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 3rem 0 1.5rem;
    margin-top: 3rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.875rem;
}

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

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

.footer-section li {
    margin-bottom: 0.4rem;
}

.footer-section a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* ── Floating Return Button ──────────────────────────────────────────────── */
.floating-return-btn {
    position: fixed;
    bottom: 28px;
    right: 28px;
    z-index: 1000;
}

.float-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 50%;
    color: var(--text-primary);
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    transition: all 0.2s ease;
    font-size: 1.25rem;
}

.float-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(34, 211, 238, 0.2);
}

/* ── Copy Button (injected by JS) ────────────────────────────────────────── */
.copy-btn {
    position: absolute !important;
    top: 10px !important;
    right: 10px !important;
    background: var(--bg-secondary) !important;
    border: 1px solid var(--border-light) !important;
    border-radius: 6px !important;
    padding: 5px 10px !important;
    font-size: 0.75rem !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
    color: var(--text-muted) !important;
    font-family: 'Segoe UI', sans-serif !important;
}

.copy-btn:hover {
    background: var(--border) !important;
    color: var(--text-primary) !important;
}

/* ── Scrollbar ───────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ── Section note ────────────────────────────────────────────────────────── */
.section-note {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1.25rem;
}

/* ── Download File Gallery ───────────────────────────────────────────────── */
.dl-lang-panel {
    display: none;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 1.25rem;
}

.dl-lang-panel.active {
    display: flex;
    animation: fadeIn 0.25s ease-out;
}

.dl-file-block {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
}

.dl-file-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    gap: 1rem;
}

.dl-file-name {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.btn-download-file {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.9rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 700;
    text-decoration: none;
    background: linear-gradient(135deg, rgba(34,211,238,0.12), rgba(74,222,128,0.08));
    color: var(--accent);
    border: 1px solid rgba(34,211,238,0.3);
    transition: all 0.15s ease;
    white-space: nowrap;
}

.btn-download-file:hover {
    background: linear-gradient(135deg, rgba(34,211,238,0.22), rgba(74,222,128,0.15));
    border-color: var(--accent);
    transform: translateY(-1px);
}

.dl-binary-note {
    padding: 0.85rem 1rem;
    font-size: 0.82rem;
    color: var(--text-muted);
    font-style: italic;
}

.dl-code {
    max-height: 420px;
    overflow-y: auto;
    border-radius: 0;
    border: none;
    margin: 0;
    font-size: 0.8rem;
    line-height: 1.55;
    white-space: pre;
}

/* ── Animations ──────────────────────────────────────────────────────────── */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
    .header-title { font-size: 1.5rem; }
    .controls-container { justify-content: flex-end; }
    .nav-tabs { gap: 0.125rem; }
    .content-section { padding: 1rem; }
    .steps-container { grid-template-columns: 1fr; }
    .download-grid { grid-template-columns: 1fr; }
    .endpoint-info { flex-direction: column; align-items: flex-start; }
    .language-tabs { gap: 0.125rem; }
    .config-item { flex-direction: column; align-items: flex-start; gap: 0.25rem; }
}