/* ========================================
   GlyphFex Help Center — help.css
   3-column layout: Sidebar + Content + TOC
   ======================================== */

/* ---------- Help Layout ---------- */
.help-page {
    background: #fff;
}

.help-layout {
    display: grid;
    grid-template-columns: 260px 1fr 200px;
    min-height: calc(100vh - 73px);
    max-width: 1400px;
    margin: 0 auto;
    padding-top: 73px; /* navbar height */
}

/* ---------- Sidebar ---------- */
.help-sidebar {
    position: sticky;
    top: 73px;
    height: calc(100vh - 73px);
    overflow-y: auto;
    border-right: 1px solid var(--gray-200);
    padding: 24px 0;
    background: var(--gray-50);
    scrollbar-width: thin;
}

.help-sidebar::-webkit-scrollbar {
    width: 4px;
}

.help-sidebar::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 4px;
}

.sidebar-search {
    padding: 0 20px 16px;
    position: relative;
}

.sidebar-search input {
    width: 100%;
    padding: 10px 12px 10px 36px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-family: var(--font-family);
    font-size: 14px;
    color: var(--gray-800);
    background: #fff;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.sidebar-search input:focus {
    border-color: var(--blue-600);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.sidebar-search input::placeholder {
    color: var(--gray-400);
}

.sidebar-search .search-icon {
    position: absolute;
    left: 32px;
    top: 50%;
    transform: translateY(calc(-50% - 8px));
    width: 16px;
    height: 16px;
    color: var(--gray-400);
    pointer-events: none;
}

/* Search Results Dropdown */
.search-results {
    position: absolute;
    top: calc(100% - 8px);
    left: 20px;
    right: 20px;
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    max-height: 400px;
    overflow-y: auto;
    z-index: 100;
    display: none;
}

.search-results.active {
    display: block;
}

.search-result-item {
    display: block;
    padding: 10px 16px;
    text-decoration: none;
    color: var(--gray-800);
    border-bottom: 1px solid var(--gray-100);
    transition: background 0.15s ease;
}

.search-result-item:hover,
.search-result-item.focused {
    background: var(--blue-50);
}

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

.search-result-page {
    font-size: 11px;
    font-weight: 600;
    color: var(--blue-600);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 2px;
}

.search-result-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-900);
}

.search-no-results {
    padding: 16px;
    text-align: center;
    color: var(--gray-500);
    font-size: 14px;
}

/* Sidebar Navigation */
.sidebar-nav {
    display: flex;
    flex-direction: column;
}

.sidebar-nav-label {
    padding: 16px 20px 6px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--gray-400);
}

.sidebar-nav a {
    display: block;
    padding: 8px 20px;
    font-size: 14px;
    color: var(--gray-600);
    text-decoration: none;
    border-left: 3px solid transparent;
    transition: all 0.15s ease;
    line-height: 1.4;
}

.sidebar-nav a:hover {
    color: var(--gray-900);
    background: rgba(0, 0, 0, 0.03);
}

.sidebar-nav a.active {
    color: var(--blue-600);
    font-weight: 600;
    border-left-color: var(--blue-600);
    background: rgba(37, 99, 235, 0.04);
}

/* ---------- Mobile Sidebar Toggle ---------- */
.sidebar-toggle {
    display: none;
    position: fixed;
    bottom: 24px;
    left: 24px;
    z-index: 50;
    padding: 12px 20px;
    background: var(--blue-600);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: background 0.2s ease, transform 0.2s ease;
}

.sidebar-toggle:hover {
    background: var(--blue-700);
    transform: translateY(-2px);
}

/* Overlay — hidden on desktop, positioned fixed so never in grid flow */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 73px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 35;
}

/* ---------- Main Content ---------- */
.help-content {
    padding: 40px 48px 80px;
    max-width: 860px;
    min-width: 0;
}

.help-content h1 {
    font-size: 32px;
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1.2;
    margin-bottom: 8px;
}

.help-subtitle {
    font-size: 17px;
    color: var(--gray-500);
    line-height: 1.6;
    margin-bottom: 40px;
}

.help-content h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--gray-900);
    margin-top: 48px;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--gray-200);
    scroll-margin-top: 90px;
}

.help-content h2:first-of-type {
    margin-top: 0;
}

.help-content h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--gray-800);
    margin-top: 32px;
    margin-bottom: 12px;
    scroll-margin-top: 90px;
}

.help-content h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--gray-700);
    margin-top: 24px;
    margin-bottom: 8px;
}

.help-content p {
    font-size: 15px;
    line-height: 1.75;
    color: var(--gray-600);
    margin-bottom: 16px;
}

.help-content ul,
.help-content ol {
    padding-left: 24px;
    margin-bottom: 16px;
}

.help-content li {
    font-size: 15px;
    line-height: 1.7;
    color: var(--gray-600);
    margin-bottom: 6px;
}

.help-content li strong {
    color: var(--gray-800);
}

.help-content a {
    color: var(--blue-600);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.15s ease;
}

.help-content a:hover {
    color: var(--blue-700);
    text-decoration: underline;
}

.help-content code {
    background: var(--gray-100);
    padding: 2px 7px;
    border-radius: 4px;
    font-size: 0.88em;
    font-family: 'SFMono-Regular', Menlo, monospace;
    color: var(--gray-800);
}

.help-content pre {
    background: var(--gray-900);
    color: var(--gray-100);
    padding: 16px 20px;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    margin-bottom: 16px;
    font-size: 13px;
    line-height: 1.6;
}

.help-content pre code {
    background: none;
    padding: 0;
    color: inherit;
    font-size: inherit;
}

/* ---------- Callouts ---------- */
.help-tip,
.help-note,
.help-warning {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    font-size: 14px;
    line-height: 1.6;
    border-left: 4px solid;
}

.help-tip {
    background: var(--blue-50);
    border-left-color: var(--blue-600);
    color: var(--gray-700);
}

.help-note {
    background: #fffbeb;
    border-left-color: var(--amber-500);
    color: var(--gray-700);
}

.help-warning {
    background: #fef2f2;
    border-left-color: var(--red-500);
    color: var(--gray-700);
}

.help-tip strong,
.help-note strong,
.help-warning strong {
    display: block;
    margin-bottom: 4px;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.help-tip strong { color: var(--blue-700); }
.help-note strong { color: #b45309; }
.help-warning strong { color: var(--red-500); }

/* ---------- Keyboard Shortcuts ---------- */
kbd {
    display: inline-block;
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    border-radius: 4px;
    padding: 2px 8px;
    font-size: 13px;
    font-family: 'SFMono-Regular', Menlo, monospace;
    color: var(--gray-700);
    box-shadow: 0 1px 0 var(--gray-300);
    line-height: 1.4;
    white-space: nowrap;
}

.shortcut-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
    border-bottom: 1px solid var(--gray-100);
}

.shortcut-row:last-child {
    border-bottom: none;
}

.shortcut-keys {
    min-width: 140px;
    flex-shrink: 0;
}

.shortcut-desc {
    font-size: 14px;
    color: var(--gray-600);
}

/* ---------- Tables ---------- */
.help-content table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
    font-size: 14px;
}

.help-content th {
    background: var(--gray-50);
    padding: 10px 14px;
    text-align: left;
    font-weight: 600;
    color: var(--gray-700);
    border-bottom: 2px solid var(--gray-200);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.help-content td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--gray-100);
    color: var(--gray-600);
    vertical-align: top;
}

.help-content tr:hover td {
    background: var(--gray-50);
}

/* ---------- Steps / Numbered Lists ---------- */
.help-steps {
    counter-reset: step-counter;
    list-style: none;
    padding-left: 0;
}

.help-steps li {
    counter-increment: step-counter;
    position: relative;
    padding-left: 48px;
    margin-bottom: 24px;
}

.help-steps li::before {
    content: counter(step-counter);
    position: absolute;
    left: 0;
    top: 0;
    width: 32px;
    height: 32px;
    background: var(--blue-600);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
}

/* ---------- Feature Cards (Help Home) ---------- */
.help-categories {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 48px;
}

.help-category-card {
    display: block;
    padding: 28px 24px;
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: all 0.2s ease;
}

.help-category-card:hover {
    border-color: var(--blue-200);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.help-category-icon {
    width: 48px;
    height: 48px;
    background: var(--blue-50);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    color: var(--blue-600);
}

.help-category-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 6px;
    margin-top: 0;
}

.help-category-card p {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.5;
    margin-bottom: 0;
}

/* ---------- Popular Articles ---------- */
.popular-articles {
    margin-bottom: 48px;
}

.popular-articles h2 {
    border-bottom: none;
    margin-bottom: 16px;
    padding-bottom: 0;
}

.popular-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.popular-links a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    color: var(--gray-700);
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: all 0.15s ease;
}

.popular-links a:hover {
    background: var(--blue-50);
    color: var(--blue-600);
}

.popular-links a::before {
    content: "";
    width: 6px;
    height: 6px;
    background: var(--blue-600);
    border-radius: 50%;
    flex-shrink: 0;
}

/* ---------- Table of Contents (Right) ---------- */
.help-toc {
    position: sticky;
    top: 73px;
    height: calc(100vh - 73px);
    overflow-y: auto;
    padding: 32px 20px;
    border-left: 1px solid var(--gray-200);
    scrollbar-width: thin;
}

.help-toc h3 {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--gray-400);
    margin-bottom: 12px;
}

.help-toc ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.help-toc li {
    margin-bottom: 0;
}

.help-toc a {
    display: block;
    padding: 5px 0;
    font-size: 13px;
    color: var(--gray-500);
    text-decoration: none;
    border-left: 2px solid transparent;
    padding-left: 12px;
    transition: all 0.15s ease;
    line-height: 1.4;
}

.help-toc a:hover {
    color: var(--gray-700);
}

.help-toc a.active {
    color: var(--blue-600);
    border-left-color: var(--blue-600);
    font-weight: 500;
}

/* ---------- Help Home specific ---------- */
.help-home-content {
    max-width: 960px;
    padding: 48px;
}

.help-home-content h1 {
    font-size: 36px;
    margin-bottom: 12px;
}

.help-home-subtitle {
    font-size: 18px;
    color: var(--gray-500);
    margin-bottom: 32px;
}

.help-home-search {
    max-width: 520px;
    margin-bottom: 48px;
    position: relative;
}

.help-home-search input {
    width: 100%;
    padding: 14px 18px 14px 48px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: 16px;
    color: var(--gray-800);
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.help-home-search input:focus {
    border-color: var(--blue-600);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.help-home-search input::placeholder {
    color: var(--gray-400);
}

.help-home-search .search-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--gray-400);
    pointer-events: none;
}

/* ---------- Screenshot Placeholders ---------- */
.help-screenshot {
    position: relative;
    background: var(--gray-50);
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius-md);
    padding: 40px 24px;
    margin: 24px 0;
    text-align: center;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.help-screenshot .screenshot-icon {
    width: 48px;
    height: 48px;
    color: var(--gray-400);
    margin-bottom: 4px;
}

.help-screenshot .screenshot-label {
    font-size: 15px;
    font-weight: 600;
    color: var(--gray-500);
}

.help-screenshot .screenshot-desc {
    font-size: 13px;
    color: var(--gray-400);
    max-width: 400px;
    line-height: 1.5;
}

.help-screenshot img {
    max-width: 100%;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
}

/* ---------- Responsive ---------- */
@media (max-width: 1200px) {
    .help-layout {
        grid-template-columns: 260px 1fr;
    }

    .help-toc {
        display: none;
    }
}

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

    .help-sidebar {
        position: fixed;
        left: -280px;
        top: 73px;
        width: 280px;
        height: calc(100vh - 73px);
        z-index: 40;
        transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: none;
    }

    .help-sidebar.open {
        left: 0;
        box-shadow: var(--shadow-xl);
    }

    .sidebar-toggle {
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .sidebar-overlay.active {
        display: block;
    }

    .help-content {
        padding: 24px 20px 80px;
    }

    .help-categories {
        grid-template-columns: 1fr;
    }

    .popular-links {
        grid-template-columns: 1fr;
    }

    .help-home-content {
        padding: 24px 20px;
    }
}

@media (max-width: 480px) {
    .help-content h1 {
        font-size: 26px;
    }

    .help-content h2 {
        font-size: 20px;
    }

    .help-content table {
        font-size: 13px;
    }

    .help-content th,
    .help-content td {
        padding: 8px 10px;
    }
}