/* Theme CSS Custom Properties — Dark-first analytical tool */

:root,
[data-theme="dark"] {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #484f58;
    --border-color: #30363d;
    --card-bg: #161b22;
    --card-border: #30363d;
    --input-bg: #21262d;
    --input-border: #30363d;
    --nav-bg: #161b22;
    --nav-text: #e6edf3;
    --table-hover: rgba(255, 255, 255, 0.04);
    --table-header-bg: #21262d;
    --table-header-text: #8b949e;
    --unsaved-highlight: rgba(210, 153, 34, 0.12);
    --panel-bg: #161b22;
    --panel-shadow: rgba(0, 0, 0, 0.6);
    --overlay-bg: rgba(0, 0, 0, 0.6);
    --code-bg: #21262d;
    --link-color: #58a6ff;
    --accent: #58a6ff;
    --accent-hover: #79c0ff;
    --positive: #3fb950;
    --negative: #f85149;
    --warning: #d29922;
    --success-subtle: rgba(63, 185, 80, 0.1);
    --danger-subtle: rgba(248, 81, 73, 0.1);
    --stat-group-bg: #21262d;
    --stat-group-border: #58a6ff;
}

[data-theme="light"] {
    --bg-primary: #f6f8fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #ffffff;
    --text-primary: #1f2328;
    --text-secondary: #656d76;
    --text-muted: #8b949e;
    --border-color: #d0d7de;
    --card-bg: #ffffff;
    --card-border: #d0d7de;
    --input-bg: #ffffff;
    --input-border: #d0d7de;
    --nav-bg: #ffffff;
    --nav-text: #1f2328;
    --table-hover: rgba(0, 0, 0, 0.03);
    --table-header-bg: #f6f8fa;
    --table-header-text: #656d76;
    --unsaved-highlight: rgba(210, 153, 34, 0.1);
    --panel-bg: #ffffff;
    --panel-shadow: rgba(0, 0, 0, 0.2);
    --overlay-bg: rgba(0, 0, 0, 0.4);
    --code-bg: #f6f8fa;
    --link-color: #0969da;
    --accent: #0969da;
    --accent-hover: #0550ae;
    --positive: #1a7f37;
    --negative: #cf222e;
    --warning: #9a6700;
    --success-subtle: rgba(26, 127, 55, 0.08);
    --danger-subtle: rgba(207, 34, 46, 0.08);
    --stat-group-bg: #f6f8fa;
    --stat-group-border: #0969da;
}

html {
    font-size: 13px;
    position: relative;
    min-height: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
    box-shadow: 0 0 0 1px var(--accent);
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
    color: var(--text-muted);
    text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
    text-align: start;
}

/* Theme-aware components */
.navbar {
    background-color: var(--nav-bg) !important;
    border-bottom: 1px solid var(--border-color) !important;
}

.navbar .nav-link {
    color: var(--text-secondary) !important;
    font-size: 12px;
    padding: 8px 12px !important;
    transition: color 0.15s;
}

.navbar .nav-link:hover {
    color: var(--text-primary) !important;
}

.navbar .nav-link.active {
    color: var(--text-primary) !important;
    font-weight: 500;
    border-bottom: 2px solid var(--accent);
}

.navbar-brand {
    color: var(--text-primary) !important;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 6px;
}

a {
    color: var(--link-color);
}

/* Monospace number utility */
.num {
    font-family: 'JetBrains Mono', 'Cascadia Code', 'Fira Code', monospace;
    font-variant-numeric: tabular-nums;
}

/* Form controls theme */
.form-control, .form-select {
    background-color: var(--input-bg);
    border-color: var(--input-border);
    color: var(--text-primary);
}

.form-control:focus, .form-select:focus {
    background-color: var(--input-bg);
    border-color: var(--accent);
    color: var(--text-primary);
}

.form-label {
    color: var(--text-secondary);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    font-weight: 600;
}