/* ============================================================
   Driver Reaction Time — Main Stylesheet
   ============================================================ */

:root {
    --red:     #e63946;
    --amber:   #f4a261;
    --green:   #2dc653;
    --bg:      #0d0d0d;
    --surface: #1a1a1a;
    --card:    #222222;
    --border:  #333333;
    --text:    #f0f0f0;
    --muted:   #888888;
    --radius:  10px;
    --shadow:  0 4px 24px rgba(0,0,0,.5);
}

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

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a { color: var(--green); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---- Navbar ---- */
.navbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 0 1.5rem;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}
.navbar-brand {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: .5rem;
    text-decoration: none;
}
.brand-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
}
.brand-dot.red   { background: var(--red);   box-shadow: 0 0 6px var(--red); }
.brand-dot.amber { background: var(--amber); box-shadow: 0 0 6px var(--amber); }
.brand-dot.green { background: var(--green); box-shadow: 0 0 6px var(--green); }
.navbar-links { display: flex; align-items: center; gap: 1.25rem; }
.navbar-links a { color: var(--muted); font-size: .9rem; }
.navbar-links a:hover { color: var(--text); text-decoration: none; }

/* ---- Layout ---- */
.container {
    max-width: 900px;
    margin: 2rem auto;
    padding: 0 1.5rem;
    flex: 1;
}
.container-wide {
    max-width: 1100px;
    margin: 2rem auto;
    padding: 0 1.5rem;
    flex: 1;
}

/* ---- Cards ---- */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem;
    box-shadow: var(--shadow);
}
.card + .card { margin-top: 1.25rem; }
.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text);
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    padding: .6rem 1.25rem;
    border-radius: 6px;
    border: none;
    font-size: .95rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity .15s, transform .1s;
    text-decoration: none;
}
.btn:hover { opacity: .88; text-decoration: none; }
.btn:active { transform: scale(.97); }
.btn-primary   { background: var(--green);  color: #000; }
.btn-danger    { background: var(--red);    color: #fff; }
.btn-secondary { background: var(--border); color: var(--text); }
.btn-outline   { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-sm        { padding: .35rem .85rem; font-size: .85rem; }
.btn-lg        { padding: .85rem 2rem; font-size: 1.1rem; }
.btn-block     { width: 100%; justify-content: center; }

/* ---- Forms ---- */
.form-group { margin-bottom: 1.1rem; }
.form-group label {
    display: block;
    font-size: .85rem;
    color: var(--muted);
    margin-bottom: .35rem;
    text-transform: uppercase;
    letter-spacing: .04em;
}
.form-control {
    width: 100%;
    padding: .65rem .9rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: .95rem;
    transition: border-color .15s;
}
.form-control:focus {
    outline: none;
    border-color: var(--green);
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
.form-hint {
    font-size: .8rem;
    color: var(--muted);
    margin-top: .3rem;
}

/* ---- Alerts ---- */
.alert {
    padding: .8rem 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
    font-size: .9rem;
}
.alert-error   { background: rgba(230,57,70,.15);  border: 1px solid var(--red);   color: #f08080; }
.alert-success { background: rgba(45,198,83,.15);  border: 1px solid var(--green); color: #80e09a; }
.alert-info    { background: rgba(255,255,255,.05); border: 1px solid var(--border); color: var(--muted); }

/* ---- Page header ---- */
.page-header {
    margin-bottom: 2rem;
}
.page-header h1 {
    font-size: 1.8rem;
    font-weight: 700;
}
.page-header p {
    color: var(--muted);
    margin-top: .4rem;
}

/* ---- Tables ---- */
.table-wrap { overflow-x: auto; }
table {
    width: 100%;
    border-collapse: collapse;
    font-size: .9rem;
}
th, td {
    padding: .7rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}
th {
    color: var(--muted);
    font-size: .8rem;
    text-transform: uppercase;
    letter-spacing: .05em;
}
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(255,255,255,.03); }

/* ---- Badges ---- */
.badge {
    display: inline-block;
    padding: .2rem .6rem;
    border-radius: 20px;
    font-size: .75rem;
    font-weight: 600;
}
.badge-green  { background: rgba(45,198,83,.2);  color: var(--green); }
.badge-red    { background: rgba(230,57,70,.2);  color: var(--red); }
.badge-amber  { background: rgba(244,162,97,.2); color: var(--amber); }
.badge-muted  { background: var(--border);       color: var(--muted); }

/* ---- Dividers ---- */
.divider { border: none; border-top: 1px solid var(--border); margin: 1.5rem 0; }

/* ---- Footer ---- */
.site-footer {
    text-align: center;
    color: var(--muted);
    font-size: .8rem;
    padding: 1.5rem;
    border-top: 1px solid var(--border);
}

/* ---- Auth pages ---- */
.auth-wrap {
    max-width: 420px;
    margin: 4rem auto;
    padding: 0 1rem;
}
.auth-wrap .card { padding: 2rem; }
.auth-wrap h1 { font-size: 1.5rem; margin-bottom: .4rem; }
.auth-wrap p.subtitle { color: var(--muted); margin-bottom: 1.5rem; font-size: .9rem; }
.auth-footer { text-align: center; margin-top: 1.25rem; font-size: .875rem; color: var(--muted); }

/* ---- Reaction Light ---- */
.light-stage {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    gap: 2rem;
    text-align: center;
}
.light-panel {
    display: flex;
    gap: 1.5rem;
}
.light {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: #1a1a1a;
    border: 3px solid #333;
    transition: background .1s, box-shadow .1s;
}
.light.red-on {
    background: var(--red);
    box-shadow: 0 0 40px var(--red), 0 0 80px rgba(230,57,70,.4);
}
.light.green-on {
    background: var(--green);
    box-shadow: 0 0 40px var(--green), 0 0 80px rgba(45,198,83,.4);
}
.light-instruction {
    font-size: 1.1rem;
    color: var(--muted);
    min-height: 2rem;
}
.reaction-result {
    font-size: 3rem;
    font-weight: 800;
    color: var(--green);
    min-height: 4rem;
}
.reaction-result.false-start {
    color: var(--red);
}
.reaction-result.ms-label {
    font-size: 1rem;
    color: var(--muted);
    font-weight: 400;
}
#start-btn {
    font-size: 1.1rem;
    padding: .8rem 2.5rem;
}

/* ---- Run history chips ---- */
.run-chips {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
    margin-top: .75rem;
}
.run-chip {
    padding: .3rem .7rem;
    border-radius: 20px;
    font-size: .85rem;
    font-weight: 600;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text);
}
.run-chip.practice { border-color: var(--amber); color: var(--amber); }
.run-chip.official { border-color: var(--green); color: var(--green); }
.run-chip.false-start { border-color: var(--red); color: var(--red); }

/* ---- Leaderboard ---- */
.leaderboard-rank {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--muted);
    width: 40px;
}
.leaderboard-rank.gold   { color: #ffd700; }
.leaderboard-rank.silver { color: #c0c0c0; }
.leaderboard-rank.bronze { color: #cd7f32; }
.time-ms {
    font-family: 'Courier New', monospace;
    font-weight: 700;
    font-size: 1rem;
    color: var(--green);
}

/* ---- Event list grid ---- */
.event-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
    margin-top: 1.25rem;
}
.event-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: .5rem;
    transition: border-color .15s;
}
.event-card:hover { border-color: var(--green); text-decoration: none; }
.event-card h3 { font-size: 1rem; color: var(--text); }
.event-card .meta { font-size: .8rem; color: var(--muted); }

/* ---- Progress bar (for run count) ---- */
.progress-bar-wrap {
    background: var(--border);
    border-radius: 20px;
    height: 8px;
    overflow: hidden;
    margin-top: .5rem;
}
.progress-bar {
    height: 100%;
    border-radius: 20px;
    background: var(--green);
    transition: width .3s;
}

/* ---- Utilities ---- */
.text-center  { text-align: center; }
.text-muted   { color: var(--muted); }
.text-green   { color: var(--green); }
.text-red     { color: var(--red); }
.text-amber   { color: var(--amber); }
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: .5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-1 { gap: .5rem; }
.gap-2 { gap: 1rem; }
.hidden { display: none !important; }

@media (max-width: 600px) {
    .form-row { grid-template-columns: 1fr; }
    .light { width: 72px; height: 72px; }
    .reaction-result { font-size: 2.2rem; }
    .container { padding: 0 1rem; }
    .card { padding: 1.25rem; }
}