/* ============================================================================
   DFW Market Tracker — design tokens
   Concept: a surveyor's plat map / blueprint. Deep blueprint navy, brass-gold
   for measured values, brick-rust for the rental/secondary series, fine grid
   lines standing in for a plat grid. Numbers set in mono, like coordinates.
   ============================================================================ */
:root {
    --bg: #0F1B2B;
    --panel: #16273D;
    --panel-border: #24384f;
    --grid-line: rgba(143, 160, 179, 0.08);
    --gold: #C9A227;
    --rust: #B4552F;
    --sage: #7A9E7E;
    --text: #EDEEF0;
    --text-muted: #8FA0B3;
    --font-display: 'Fraunces', serif;
    --font-body: 'Inter', system-ui, sans-serif;
    --font-mono: 'IBM Plex Mono', monospace;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    line-height: 1.5;
}

.grid-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background-image:
        linear-gradient(var(--grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 48px 48px;
}

main {
    position: relative;
    z-index: 1;
    max-width: 1040px;
    margin: 0 auto;
    padding: 2rem 1.5rem 4rem;
}

a { color: var(--gold); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible, input:focus-visible {
    outline: 2px solid var(--gold);
    outline-offset: 2px;
}

/* -------------------------------------------------------------------- */
/* Header / footer                                                       */
/* -------------------------------------------------------------------- */
.site-header {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--panel-border);
}
.brand { display: flex; align-items: center; gap: 0.6rem; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand-mark { color: var(--gold); font-size: 1.3rem; }
.brand-mark.large { font-size: 2.4rem; text-align: center; display: block; }
.brand-text {
    font-family: var(--font-mono);
    letter-spacing: 0.12em;
    font-size: 0.82rem;
    font-weight: 500;
}
.site-header nav a {
    color: var(--text-muted);
    margin-left: 1.4rem;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    letter-spacing: 0.04em;
}
.site-header nav a:hover { color: var(--gold); }

.site-footer {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 2rem 1.5rem 3rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.03em;
}

/* -------------------------------------------------------------------- */
/* Page head                                                             */
/* -------------------------------------------------------------------- */
.page-head { margin: 1rem 0 2rem; }
.eyebrow {
    display: block;
    font-family: var(--font-mono);
    color: var(--gold);
    letter-spacing: 0.14em;
    font-size: 0.75rem;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}
h1 {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 2.2rem;
    margin: 0;
    letter-spacing: -0.01em;
}
h2 {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.25rem;
    margin: 0 0 1rem;
    display: flex;
    align-items: baseline;
    gap: 0.6rem;
}
.hint {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
    font-weight: 400;
    letter-spacing: 0.02em;
}

/* -------------------------------------------------------------------- */
/* Panels                                                                */
/* -------------------------------------------------------------------- */
.panel {
    background: var(--panel);
    border: 1px solid var(--panel-border);
    border-radius: 4px;
    padding: 1.5rem 1.75rem;
    margin-bottom: 1.5rem;
}
.chart-panel canvas { max-height: 260px; }

/* -------------------------------------------------------------------- */
/* Tables                                                                */
/* -------------------------------------------------------------------- */
.data-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.data-table th {
    text-align: left;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-muted);
    border-bottom: 1px solid var(--panel-border);
    padding: 0.5rem 0.6rem;
}
.data-table td {
    padding: 0.6rem;
    border-bottom: 1px solid var(--panel-border);
}
.data-table tr:last-child td { border-bottom: none; }
.data-table .num { font-family: var(--font-mono); }
.data-table .muted { color: var(--text-muted); font-size: 0.82rem; }

.badge {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    padding: 0.15rem 0.5rem;
    border-radius: 3px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.badge-success { background: rgba(122,158,126,0.18); color: var(--sage); }
.badge-no_new_data { background: rgba(143,160,179,0.18); color: var(--text-muted); }
.badge-error { background: rgba(180,85,47,0.2); color: var(--rust); }
.badge-running { background: rgba(201,162,39,0.18); color: var(--gold); }

.empty-note {
    color: var(--text-muted);
    font-size: 0.88rem;
    font-style: italic;
}

/* -------------------------------------------------------------------- */
/* Stat grid (demographics)                                              */
/* -------------------------------------------------------------------- */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.25rem;
}
.stat { display: flex; flex-direction: column; gap: 0.3rem; }
.stat-label {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
    letter-spacing: 0.03em;
}
.stat-value {
    font-family: var(--font-mono);
    font-size: 1.3rem;
    color: var(--gold);
}

/* -------------------------------------------------------------------- */
/* Login                                                                 */
/* -------------------------------------------------------------------- */
.login-wrap {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
.login-card {
    background: var(--panel);
    border: 1px solid var(--panel-border);
    border-radius: 4px;
    padding: 2.5rem 2.5rem 2rem;
    width: 100%;
    max-width: 360px;
    text-align: center;
}
.login-card h1 {
    font-size: 1.4rem;
    margin: 0.75rem 0 0.25rem;
}
.subtle { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 1.5rem; }
.login-card form { display: flex; flex-direction: column; gap: 0.5rem; text-align: left; }
.login-card label {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
    letter-spacing: 0.03em;
    margin-top: 0.5rem;
}
.login-card input {
    background: var(--bg);
    border: 1px solid var(--panel-border);
    border-radius: 3px;
    padding: 0.6rem 0.7rem;
    color: var(--text);
    font-family: var(--font-body);
    font-size: 0.9rem;
}
.login-card button {
    margin-top: 1.25rem;
    background: var(--gold);
    color: var(--bg);
    border: none;
    border-radius: 3px;
    padding: 0.7rem;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    cursor: pointer;
}
.login-card button:hover { background: #e0b62d; }
.error { color: var(--rust); font-size: 0.85rem; }

@media (max-width: 640px) {
    h1 { font-size: 1.7rem; }
    .site-header { flex-direction: column; gap: 0.75rem; align-items: flex-start; }
}