:root {
    --bg: #f3f4f6;
    --card: #ffffff;
    --ink: #0f172a;
    --muted: #64748b;
    --teal: #0f766e;
    --teal-dark: #115e59;
    --border: #e5e7eb;
    --blue: #2563eb;
    --purple: #7c3aed;
    --orange: #ea580c;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: Arial, Helvetica, sans-serif;
}

.container { max-width: 1180px; margin: 0 auto; }

.hero {
    background: linear-gradient(135deg, #0f172a, #115e59);
    color: white;
    padding: 40px 20px;
}

.hero.compact { padding: 28px 20px; }

.eyebrow {
    color: #99f6e4;
    text-transform: uppercase;
    letter-spacing: .12em;
    font-size: 13px;
    font-weight: bold;
    margin: 0 0 10px;
}

.hero h1 {
    margin: 0;
    font-size: 44px;
    line-height: 1.05;
    letter-spacing: -0.04em;
}

.hero-subtitle {
    margin: 14px 0 0;
    color: #cbd5e1;
    max-width: 780px;
    line-height: 1.5;
    font-size: 17px;
}

.stats-row {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin-top: 26px;
}

.stat-card {
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 16px;
    padding: 16px;
}

.stat-number { font-size: 30px; font-weight: bold; }
.stat-label { color: #cbd5e1; font-size: 13px; margin-top: 4px; }

.controls { margin: -28px auto 24px; padding: 0 20px; }

.controls-card, .signup-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: 0 14px 30px rgba(15, 23, 42, 0.08);
    padding: 18px;
}

form {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr auto;
    gap: 12px;
    align-items: end;
}

.signup-form { grid-template-columns: 1fr 1.2fr 1fr 1fr auto; }

label {
    display: block;
    font-size: 13px;
    font-weight: bold;
    color: var(--muted);
    margin-bottom: 6px;
}

input, select {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 11px 12px;
    font-size: 15px;
    background: white;
}

button, .button {
    border: 0;
    background: var(--teal);
    color: white;
    padding: 12px 16px;
    border-radius: 12px;
    font-weight: bold;
    text-decoration: none;
    cursor: pointer;
    display: inline-block;
    text-align: center;
}

button:hover, .button:hover { background: var(--teal-dark); }
.button.secondary, button.secondary { background: #e5e7eb; color: #111827; }

.button-row { display: flex; gap: 8px; flex-wrap: wrap; }
.content { padding: 0 20px 48px; }

.alert {
    border-radius: 14px;
    padding: 14px 16px;
    margin: 18px 0;
    border: 1px solid var(--border);
    background: white;
}

.alert.success { border-color: #99f6e4; color: #115e59; background: #f0fdfa; }
.alert.warning { border-color: #fed7aa; color: #9a3412; background: #fff7ed; }

.school-section { margin: 28px 0; }

.school-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}

.school-header h2 { font-size: 24px; margin: 0; }
.school-header span { color: var(--muted); font-size: 14px; }

.class-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.class-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 18px;
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.04);
}

.class-top {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: start;
}

.class-top h3 { margin: 0; font-size: 20px; line-height: 1.3; }

.badge {
    display: inline-block;
    border-radius: 999px;
    padding: 5px 10px;
    font-size: 12px;
    font-weight: bold;
    white-space: nowrap;
    color: white;
}

.badge-sampson { background: var(--teal); }
.badge-jscc { background: var(--blue); }
.badge-lcc { background: var(--purple); }
.badge-wayne { background: var(--orange); }
.badge-default { background: #475569; }

.tag-row { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }

.tag {
    background: #f1f5f9;
    color: #334155;
    border: 1px solid #e2e8f0;
    border-radius: 999px;
    padding: 4px 8px;
    font-size: 12px;
    font-weight: bold;
}

.meta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 16px;
}

.meta-item {
    background: #f8fafc;
    border: 1px solid #eef2f7;
    border-radius: 12px;
    padding: 10px;
}

.meta-label {
    font-size: 12px;
    color: var(--muted);
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: .03em;
}

.meta-value { margin-top: 4px; font-size: 14px; color: #111827; }

.card-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 16px;
    gap: 12px;
    flex-wrap: wrap;
}

.last-seen { color: var(--muted); font-size: 12px; }

.empty {
    background: white;
    border: 1px dashed var(--border);
    border-radius: 18px;
    padding: 28px;
    text-align: center;
    color: var(--muted);
}

.signup-card { margin-top: 34px; }
.signup-card h2 { margin: 0 0 8px; }
.signup-card p { color: var(--muted); margin-top: 0; }

.footer {
    text-align: center;
    color: var(--muted);
    padding: 24px 20px;
    font-size: 13px;
}

.footer p { margin: 6px 0; }

.calendar-list { display: grid; gap: 12px; }

.calendar-item {
    background: white;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 14px;
    display: grid;
    grid-template-columns: 72px 1fr auto;
    gap: 14px;
    align-items: center;
}

.calendar-date {
    background: #0f172a;
    color: white;
    border-radius: 14px;
    text-align: center;
    padding: 10px;
}

.calendar-date strong { display: block; font-size: 28px; }
.calendar-item h3 { margin: 0 0 5px; }
.calendar-item p { margin: 0; color: var(--muted); }

@media (max-width: 1040px) {
    form, .signup-form { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 820px) {
    .stats-row, form, .signup-form, .class-grid, .meta, .calendar-item {
        grid-template-columns: 1fr;
    }

    .hero h1 { font-size: 34px; }
    .class-top, .card-actions, .school-header { flex-direction: column; align-items: flex-start; }
}