:root {
    --primary: #e53935;
    --primary-dark: #c62828;
    --secondary: #666666;
    --danger: #d63031;
    --warning: #fdcb6e;
    --success: #00b894;
    --bg: #f8f9fa;
    --bg-card: #ffffff;
    --text: #222222;
    --text-muted: #666666;
    --border: #dfe6e9;
    --radius: 8px;
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navbar */
.navbar {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.nav-brand {
    display: flex;
    align-items: center;
    text-decoration: none;
}
.nav-logo {
    height: 36px;
    width: auto;
}
.nav-links { display: flex; gap: 1.5rem; }
.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}
.nav-links a:hover { color: var(--primary); }

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    flex: 1;
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
}
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}
.card-header h2, .card-header h3 { margin: 0; }

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}
.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    text-align: center;
    box-shadow: var(--shadow);
}
.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}
.stat-card .stat-label {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius);
    border: none;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
    line-height: 1.5;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background: var(--border); color: var(--text); }
.btn-secondary:hover { background: #c8d6e5; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #b71c1c; }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #00a884; }
.btn-sm { padding: 0.3rem 0.75rem; font-size: 0.8rem; }

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
}
.form-group label {
    display: block;
    margin-bottom: 0.4rem;
    font-weight: 500;
    font-size: 0.9rem;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-family: inherit;
    transition: border-color 0.2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}
.form-group textarea { min-height: 100px; resize: vertical; }
.form-group .help-text { color: var(--text-muted); font-size: 0.8rem; margin-top: 0.25rem; }
.form-inline { display: flex; gap: 0.75rem; align-items: end; }

/* Checkbox */
.checkbox-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}
.checkbox-group input[type="checkbox"] { width: auto; }

/* Alerts */
.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}
.alert-error { background: #ffeaa7; border: 1px solid #fdcb6e; color: #2d3436; }
.alert-success { background: #dfe6e9; border: 1px solid var(--success); color: var(--text); }
.alert-info { background: #fce4e4; border: 1px solid var(--primary); color: var(--text); }

/* Tables */
.table-container { overflow-x: auto; }
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}
th, td {
    text-align: left;
    padding: 0.75rem;
    border-bottom: 1px solid var(--border);
}
th {
    background: var(--bg);
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
tr:hover { background: var(--bg); }

/* Badges */
.badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-active { background: #e6f9f0; color: var(--success); }
.badge-inactive { background: var(--bg-secondary); color: var(--text-muted); }
.badge-expired { background: #fde8e8; color: var(--danger); }
.badge-revoked { background: #fab1a0; color: var(--danger); }
.badge-trial { background: #e8f4f8; color: var(--secondary); }
.badge-info { background: #fce4e4; color: var(--primary); }

/* Code blocks */
.code-block {
    background: #1e1e2e;
    color: #cdd6f4;
    padding: 1rem;
    border-radius: var(--radius);
    font-family: 'Fira Code', 'Cascadia Code', 'JetBrains Mono', monospace;
    font-size: 0.82rem;
    line-height: 1.6;
    overflow-x: auto;
    position: relative;
}
.code-block pre {
    margin: 0;
    padding: 0;
    background: transparent;
    white-space: pre;
    overflow-x: auto;
}
.code-block pre code {
    background: transparent;
    padding: 0;
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
    color: inherit;
}
.code-block pre code.hljs {
    background: transparent !important;
    padding: 0 !important;
}
.code-block .copy-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: rgba(255,255,255,0.1);
    color: #cdd6f4;
    border: none;
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.75rem;
    z-index: 2;
    transition: background 0.15s;
}
.code-block .copy-btn:hover { background: rgba(255,255,255,0.25); }

/* Syntax highlighting — Catppuccin Mocha inspired */
.code-block .hljs-keyword,
.code-block .hljs-built_in { color: #cba6f7; }
.code-block .hljs-string,
.code-block .hljs-attr { color: #a6e3a1; }
.code-block .hljs-comment { color: #6c7086; font-style: italic; }
.code-block .hljs-number,
.code-block .hljs-literal { color: #fab387; }
.code-block .hljs-function .hljs-title,
.code-block .hljs-title.function_,
.code-block .hljs-title { color: #89b4fa; }
.code-block .hljs-class .hljs-title,
.code-block .hljs-title.class_ { color: #f9e2af; }
.code-block .hljs-params { color: #f2cdcd; }
.code-block .hljs-variable,
.code-block .hljs-property { color: #cdd6f4; }
.code-block .hljs-type { color: #f9e2af; }
.code-block .hljs-meta { color: #f5c2e7; }
.code-block .hljs-punctuation { color: #9399b2; }
.code-block .lang-label {
    position: absolute;
    top: 0.4rem;
    left: 0.75rem;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #585b70;
    font-weight: 600;
    pointer-events: none;
}

/* Severity colors */
.severity-low { color: var(--success); }
.severity-medium { color: #e17055; }
.severity-high { color: var(--danger); }
.severity-critical { color: #d63031; font-weight: 700; }

/* Log level colors */
.log-debug { color: var(--text-muted); }
.log-info { color: var(--primary); }
.log-warning { color: #e17055; }
.log-error { color: var(--danger); }
.log-critical { color: #d63031; font-weight: 700; }

/* Page header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}
.page-header h1 { font-size: 1.75rem; }
.breadcrumbs {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}
.breadcrumbs a { color: var(--primary); text-decoration: none; }

/* App sub-navigation — macOS segmented control style */
.app-nav {
    display: flex;
    align-items: center;
    gap: 2px;
    margin: 0 -1.5rem 1.5rem;
    padding: 4px 1.5rem;
    background: #f0f1f4;
    border-radius: 10px;
    margin-left: 0;
    margin-right: 0;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}
.app-nav::-webkit-scrollbar { display: none; }
.app-nav-link {
    padding: 6px 14px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 7px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
    flex-shrink: 0;
    position: relative;
}
.app-nav-link:hover {
    color: var(--text);
    background: rgba(0,0,0,0.04);
}
.app-nav-link.active {
    color: var(--text);
    background: #fff;
    font-weight: 600;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
}

/* SDK language tabs — macOS segmented */
.sdk-lang-tabs {
    display: flex;
    gap: 2px;
    padding: 3px;
    background: #f0f1f4;
    border-radius: 8px;
    width: fit-content;
}

/* Admin tab navigation — macOS segmented control (matches dev tabs) */
.admin-tabs-wrapper {
    margin-bottom: 1.5rem;
}
.admin-tabs {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    padding: 4px;
    background: #f0f1f4;
    border-radius: 10px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    max-width: 100%;
}
.admin-tabs::-webkit-scrollbar { display: none; }
.admin-tab {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    font-size: 0.84rem;
    font-weight: 500;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 7px;
    white-space: nowrap;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.admin-tab svg { opacity: 0.45; transition: opacity 0.2s; flex-shrink: 0; }
.admin-tab:hover {
    color: var(--text);
    background: rgba(0,0,0,0.04);
}
.admin-tab:hover svg { opacity: 0.65; }
.admin-tab.active {
    color: var(--text);
    background: #fff;
    font-weight: 600;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
}
.admin-tab.active svg { opacity: 1; }
.sdk-lang-tab {
    padding: 5px 12px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-muted);
    background: none;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.sdk-lang-tab:hover { color: var(--text); background: rgba(0,0,0,0.04); }
.sdk-lang-tab.active {
    color: var(--text);
    background: #fff;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
}

/* Filters bar */
.filters {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    align-items: center;
}
.filters select, .filters input {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.875rem;
}

/* Pricing cards */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}
.pricing-card {
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
    transition: border-color 0.2s;
}
.pricing-card:hover { border-color: var(--primary); }
.pricing-card.featured { border-color: var(--primary); }
.pricing-card .price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin: 1rem 0;
}
.pricing-card .price span { font-size: 1rem; color: var(--text-muted); }
.pricing-card ul {
    list-style: none;
    margin: 1.5rem 0;
    text-align: left;
}
.pricing-card ul li {
    padding: 0.4rem 0;
    padding-left: 1.5rem;
    position: relative;
}
.pricing-card ul li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: bold;
}

/* Footer */
.footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    padding: 1.5rem 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: auto;
}

/* Utility */
.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.flex { display: flex; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }

/* Responsive */
@media (max-width: 768px) {
    .nav-container { padding: 0 0.75rem; }
    .nav-logo { height: 28px; }
    .nav-links { gap: 0.5rem; font-size: 0.8rem; flex-wrap: wrap; justify-content: flex-end; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .page-header { flex-direction: column; align-items: flex-start; gap: 1rem; }
    .filters { flex-direction: column; }
    .admin-tabs { display: flex; }
    .app-nav { margin-left: -1rem; margin-right: -1rem; padding-left: 1rem; padding-right: 1rem; border-radius: 0; }
    .container { padding: 1.5rem 1rem; }
}