:root {
    --sidebar-bg: #ffffff;
    --sidebar-hover: #f4f6f9;
    --sidebar-active: #e8ecf1;
    --sidebar-width: 290px;
    --sidebar-collapsed: 0px;
    --accent: #00c9a7;
    --accent-glow: rgba(0, 201, 167, 0.15);
    --accent-dark: #00a88c;
    --text-primary: #1a2332;
    --text-secondary: #3d4f5f;
    --text-muted: #7a8ea0;
    --content-bg: #f4f6f9;
    --card-bg: #ffffff;
    --heading-color: #1a2332;
    --body-color: #3d4f5f;
    --border-color: #e2e8f0;
    --code-bg: #1e2d3d;
    --danger: #ff6b6b;
    --warning: #ffc145;
    --info: #4ecdc4;
    --topbar-height: 64px;
}

html[data-theme="dark"],
body[data-theme="dark"] {
    --sidebar-bg: #0a0f14;
    --sidebar-hover: #141d26;
    --sidebar-active: #0d2a38;
    --content-bg: #0d1218;
    --card-bg: #141920;
    --heading-color: #e8ecf1;
    --body-color: #a8b3c0;
    --border-color: #2a3542;
    --code-bg: #1a2532;
    --text-primary: #e8ecf1;
    --text-secondary: #7a8ea0;
    --text-muted: #4a5f73;
}

html[data-theme="dark"] .sidebar-brand .brand-icon img,
body[data-theme="dark"] .sidebar-brand .brand-icon img {
    content: url('../img/garuda_white.svg');
}

html:not([data-theme="dark"]) .sidebar-brand .brand-icon img,
body:not([data-theme="dark"]) .sidebar-brand .brand-icon img {
    content: url('../img/garuda_white.svg');
}

html[data-theme="dark"] .nav-submenu,
body[data-theme="dark"] .nav-submenu {
    background: rgba(0,0,0,0.2);
}

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

body {
    background: var(--content-bg);
    color: var(--body-color);
    overflow-x: hidden;
    min-height: 100vh;
    transition: background-color 300ms ease, color 300ms ease;
}

/* ========== OVERLAY MOBILE ========== */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s ease;
}
.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

/* ========== SIDEBAR ========== */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--sidebar-bg);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), background-color 300ms ease;
    overflow: hidden;
}

.sidebar-brand {
    height: var(--topbar-height);
    display: flex;
    align-items: center;
    padding: 0 20px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
    gap: 12px;
}

.sidebar-brand .brand-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 16px;
    flex-shrink: 0;
}

.sidebar-brand .brand-text {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 15px;
    line-height: 1.2;
    white-space: nowrap;
}
.sidebar-brand .brand-text small {
    display: block;
    font-weight: 400;
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 1px;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 16px 0;
    scrollbar-width: thin;
    scrollbar-color: var(--text-muted) transparent;
}
.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-track { background: transparent; }
.sidebar-nav::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: 4px; }

.nav-section-label {
    padding: 12px 22px 6px;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-muted);
    white-space: nowrap;
}

.nav-item { position: relative; }

.nav-link {
    display: flex;
    align-items: center;
    padding: 10px 22px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13.5px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
    gap: 12px;
    user-select: none;
}

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

.nav-link.active {
    color: var(--accent);
    background: var(--sidebar-active);
    border-left-color: var(--accent);
}

.nav-link i.nav-icon {
    width: 20px;
    text-align: center;
    font-size: 15px;
    flex-shrink: 0;
}

.nav-link .nav-text {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.nav-link .nav-arrow {
    font-size: 10px;
    transition: transform 0.3s ease;
    color: var(--text-muted);
    flex-shrink: 0;
}
.nav-link.expanded .nav-arrow {
    transform: rotate(90deg);
    color: var(--accent);
}

/* Submenu */
.nav-submenu {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    background: rgba(0,0,0,0.04);
}
.nav-submenu.open { grid-template-rows: 1fr; }
.nav-submenu > div { overflow: hidden; }

.nav-submenu .nav-link {
    padding-left: 56px;
    font-size: 13px;
    font-weight: 400;
    border-left: none;
    position: relative;
}
.nav-submenu .nav-link::before {
    content: '';
    position: absolute;
    left: 34px;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--text-muted);
    transition: all 0.2s ease;
}
.nav-submenu .nav-link:hover::before,
.nav-submenu .nav-link.active::before {
    background: var(--accent);
    box-shadow: 0 0 6px var(--accent-glow);
}
.nav-submenu .nav-link.active {
    background: rgba(0, 201, 167, 0.08);
}

/* Sidebar footer */
.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
}
.sidebar-footer .version-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 10px;
    background: rgba(0, 201, 167, 0.1);
    border: 1px solid rgba(0, 201, 167, 0.2);
    border-radius: 6px;
    font-size: 11px;
    color: var(--accent);
    font-weight: 600;
}

/* ========== MAIN CONTENT ========== */
.main-wrapper {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    transition: margin-left 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Topbar */
.topbar {
    height: var(--topbar-height);
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 28px;
    position: sticky;
    top: 0;
    z-index: 100;
    gap: 16px;
    transition: background-color 300ms ease, border-color 300ms ease;
}

.btn-toggle-sidebar {
    width: 38px;
    height: 38px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: transparent;
    color: var(--body-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 16px;
    flex-shrink: 0;
}
.btn-toggle-sidebar:hover {
    background: var(--content-bg);
    color: var(--heading-color);
    border-color: var(--accent);
}

.breadcrumb-custom {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    flex: 1;
    min-width: 0;
}
.breadcrumb-custom span { white-space: nowrap; }
.breadcrumb-custom .bc-sep { color: var(--text-muted); }
.breadcrumb-custom .bc-current { color: var(--heading-color); font-weight: 600; }

.topbar-search {
    position: relative;
    width: 220px;
    flex-shrink: 0;
}
.topbar-search input {
    width: 100%;
    height: 38px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0 14px 0 36px;
    font-size: 13px;
    font-family: inherit;
    background: var(--content-bg);
    color: var(--heading-color);
    transition: all 0.2s ease, background-color 300ms ease, border-color 300ms ease, color 300ms ease;
}
.topbar-search input::placeholder { color: var(--text-muted); }
.topbar-search input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}
.topbar-search i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 13px;
    color: var(--text-muted);
}

.btn-theme-toggle {
    width: 38px;
    height: 38px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: transparent;
    color: var(--body-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 16px;
    flex-shrink: 0;
}
.btn-theme-toggle:hover {
    background: var(--content-bg);
    color: var(--heading-color);
    border-color: var(--accent);
}

/* ========== CONTENT AREA ========== */
.content-area {
    padding: 32px 36px 60px;
    width: 100%;
    transition: background-color 300ms ease;
}
/*
.page-header {
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}
*/
.page-header h1 {
    font-size: 28px;
    font-weight: 800;
    color: var(--heading-color);
    margin-bottom: 8px;
    line-height: 1.3;
}
.page-header .page-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.content-card {
    background: var(--card-bg);
    border-radius: 14px;
    border: 1px solid var(--border-color);
    padding: 32px;
    margin-bottom: 24px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
    animation: fadeUp 0.4s ease;
    transition: background-color 300ms ease, border-color 300ms ease;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

.content-card h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--heading-color);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.content-card h2 i {
    color: var(--accent);
    font-size: 18px;
}

.content-card h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--heading-color);
    margin: 24px 0 12px;
}

.content-card p {
    font-size: 14.5px;
    line-height: 1.8;
    margin-bottom: 14px;
    color: var(--body-color);
}

.content-card ul, .content-card ol {
    padding-left: 22px;
    margin-bottom: 16px;
}
.content-card li {
    font-size: 14.5px;
    line-height: 1.8;
    margin-bottom: 4px;
    color: var(--body-color);
}

/* Code blocks */
.code-block {
    background: var(--code-bg);
    color: #c8d6e5;
    padding: 18px 22px;
    border-radius: 10px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.7;
    overflow-x: auto;
    margin: 16px 0;
    position: relative;
}
.code-block .code-label {
    position: absolute;
    top: 8px;
    right: 12px;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent);
    font-family: 'Plus Jakarta Sans', sans-serif;
}
.code-block .kw { color: #ff79c6; }
.code-block .str { color: #f1fa8c; }
.code-block .cm { color: #6272a4; }
.code-block .fn { color: #50fa7b; }
.code-block .num { color: #bd93f9; }

/* Inline code */
code.inline {
    background: #e8ecf1;
    color: #d63384;
    padding: 2px 7px;
    border-radius: 4px;
    font-size: 13px;
    font-family: 'Courier New', monospace;
}

/* Info boxes */
.info-box {
    padding: 16px 20px;
    border-radius: 10px;
    margin: 16px 0;
    font-size: 13.5px;
    line-height: 1.7;
    display: flex;
    gap: 12px;
    align-items: flex-start;
}
.info-box i { font-size: 16px; margin-top: 2px; flex-shrink: 0; }
.info-box.tip {
    background: rgba(0, 201, 167, 0.08);
    border: 1px solid rgba(0, 201, 167, 0.2);
    color: #065f53;
}
.info-box.tip i { color: var(--accent); }
.info-box.warning {
    background: rgba(255, 193, 69, 0.08);
    border: 1px solid rgba(255, 193, 69, 0.25);
    color: #7a5a00;
}
.info-box.warning i { color: var(--warning); }
.info-box.danger {
    background: rgba(255, 107, 107, 0.08);
    border: 1px solid rgba(255, 107, 107, 0.2);
    color: #7a1f1f;
}
.info-box.danger i { color: var(--danger); }
.info-box.info {
    background: rgba(78, 205, 196, 0.08);
    border: 1px solid rgba(78, 205, 196, 0.2);
    color: #06524e;
}
.info-box.info i { color: var(--info); }

/* Table */
.table-custom {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 13.5px;
    margin: 16px 0;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: border-color 300ms ease;
}
.table-custom thead th {
    background: var(--content-bg);
    color: var(--heading-color);
    font-weight: 700;
    padding: 12px 16px;
    text-align: left;
    border-bottom: 2px solid var(--border-color);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.table-custom tbody td {
    padding: 11px 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--body-color);
}
.table-custom tbody tr:last-child td { border-bottom: none; }
.table-custom tbody tr:hover { background: rgba(0, 201, 167, 0.03); }

/* Step indicator */
.step-list { counter-reset: step; list-style: none; padding-left: 0; }
.step-list li {
    counter-increment: step;
    position: relative;
    padding-left: 48px;
    margin-bottom: 20px;
    min-height: 32px;
}
.step-list li::before {
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
}
.step-list li::after {
    content: '';
    position: absolute;
    left: 15px;
    top: 36px;
    bottom: -16px;
    width: 2px;
    background: var(--border-color);
}
.step-list li:last-child::after { display: none; }

/* Screenshot placeholder */
.screenshot-placeholder {
    background: linear-gradient(135deg, #e8ecf1 0%, #f4f6f9 100%);
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 48px 24px;
    text-align: center;
    margin: 20px 0;
    color: var(--text-secondary);
}
.screenshot-placeholder i {
    font-size: 40px;
    color: var(--text-muted);
    display: block;
    margin-bottom: 12px;
}
.screenshot-placeholder span {
    font-size: 13px;
    font-weight: 500;
}

/* Page nav (prev/next) */
.page-nav {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}
.page-nav-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    text-decoration: none;
    color: var(--body-color);
    font-size: 13px;
    font-weight: 600;
    transition: all 0.2s ease;
    cursor: pointer;
    max-width: 45%;
}
.page-nav-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 2px 8px var(--accent-glow);
}
.page-nav-btn.next { margin-left: auto; text-align: right; }
.page-nav-btn .pn-label {
    font-size: 11px;
    font-weight: 400;
    color: var(--text-muted);
    display: block;
    margin-bottom: 2px;
}

/* Search results */
.search-results {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    max-height: 320px;
    overflow-y: auto;
    display: none;
    z-index: 200;
    transition: background-color 300ms ease, border-color 300ms ease;
}
.search-results.visible { display: block; }
.search-result-item {
    padding: 10px 16px;
    cursor: pointer;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.15s ease;
}
.search-result-item:last-child { border-bottom: none; }
.search-result-item:hover { background: var(--content-bg); }
.search-result-item .sr-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--heading-color);
}
.search-result-item .sr-path {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* Scroll-to-top */
.scroll-top-btn {
    position: fixed;
    bottom: 28px;
    right: 28px;
    width: 44px;
    height: 44px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(0, 201, 167, 0.35);
    transition: all 0.3s ease;
    z-index: 50;
}
.scroll-top-btn.visible { display: flex; }
.scroll-top-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 201, 167, 0.45);
}

/* ========== TOAST ========== */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.toast-msg {
    background: var(--sidebar-bg);
    color: var(--text-primary);
    padding: 12px 20px;
    border-radius: 10px;
    font-size: 13px;
    font-weight: 500;
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
    display: flex;
    align-items: center;
    gap: 10px;
    animation: toastIn 0.35s ease;
    border-left: 3px solid var(--accent);
}
@keyframes toastIn {
    from { opacity: 0; transform: translateX(40px); }
    to { opacity: 1; transform: translateX(0); }
}

/* ========== RESPONSIVE ========== */
@media (max-width: 991px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-wrapper {
        margin-left: 0;
    }
    .content-area {
        padding: 24px 20px 48px;
    }
}

@media (min-width: 992px) {
    .sidebar.collapsed {
        transform: translateX(calc(-1 * var(--sidebar-width)));
    }
    .main-wrapper.sidebar-collapsed {
        margin-left: 0;
    }
    .btn-toggle-sidebar.collapsed i {
        transform: rotate(180deg);
    }
}

@media (max-width: 760px) {
    .bc-section {display: none;}
}

@media (max-width: 576px) {
    .page-header h1 { font-size: 22px; }
    .content-card { padding: 20px; }
    .page-nav { flex-direction: column; }
    .page-nav-btn { max-width: 100%; }
    .breadcrumb-custom {display: none;}
    .bc-section {display: none;}
}

/* prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}