:root {
    --navy: #0B2545;
    --navy-2: #13315C;
    --teal: #1B98A6;
    --amber: #F2C14E;
    --paper: #F5F8FA;
    --card: #FFFFFF;
    --ink: #12232E;
    --muted: #62727A;
    --line: #DCE4E8;
    --danger: #C1443D;
    --radius: 10px;
    --font-display: 'Oswald', sans-serif;
    --font-body: 'Inter', system-ui, sans-serif;
    --font-mono: 'Roboto Mono', monospace;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--font-body);
    -webkit-font-smoothing: antialiased;
}

button, input, select {
    font-family: inherit;
    font-size: 14px;
}

button {
    cursor: pointer;
}

a { color: inherit; }

/* ---------- Header ---------- */

.topbar {
    background: var(--navy);
    color: white;
    padding: 18px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

.topbar .meet-name {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 22px;
    letter-spacing: 0.02em;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: white;
    padding: 2px 0;
    min-width: 200px;
}
.topbar .meet-name:focus {
    outline: none;
    border-bottom-color: var(--amber);
}

.topbar .meet-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #B9C7D6;
    font-size: 13px;
}
.topbar select {
    background: var(--navy-2);
    color: white;
    border: 1px solid #2A4A76;
    border-radius: 6px;
    padding: 4px 8px;
}

.tabs {
    display: flex;
    gap: 4px;
}
.tabs button {
    background: transparent;
    border: none;
    color: #B9C7D6;
    font-family: var(--font-display);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    font-size: 13px;
    padding: 8px 16px;
    border-radius: 999px;
}
.tabs button.active {
    background: var(--amber);
    color: var(--navy);
    font-weight: 600;
}

/* ---------- Layout ---------- */

.main {
    padding: 24px 28px 80px;
    max-width: 1200px;
    margin: 0 auto;
}

.day-tabs {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 18px;
}
.day-tabs .day-tab {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 7px 14px;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.day-tabs .day-tab.active {
    background: var(--navy);
    color: white;
    border-color: var(--navy);
}
.day-tabs .day-tab .day-total {
    font-family: var(--font-mono);
    font-size: 11px;
    opacity: 0.75;
}
.btn-ghost {
    background: transparent;
    border: 1px dashed #99A9B3;
    border-radius: 999px;
    padding: 6px 14px;
    font-size: 13px;
    color: var(--muted);
}
.btn-ghost:hover { border-color: var(--teal); color: var(--teal); }

.day-header-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}
.day-header-row input[type=text], .day-header-row input[type=date] {
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 6px 10px;
}
.day-header-row .spacer { flex: 1; }

.icon-btn {
    background: transparent;
    border: none;
    color: var(--muted);
    font-size: 15px;
    padding: 4px 8px;
    border-radius: 6px;
}
.icon-btn:hover { background: #EDF2F5; color: var(--danger); }

/* ---------- Session cards ---------- */

.session-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    margin-bottom: 20px;
    overflow: hidden;
    box-shadow: 0 1px 2px rgba(11,37,69,0.04);
}

.session-header {
    background: var(--navy-2);
    color: white;
    padding: 14px 18px 16px;
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    position: relative;
}

/* lane-rope divider: alternating float dashes along the bottom of the header */
.session-header::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: 0;
    height: 4px;
    background: repeating-linear-gradient(
        90deg,
        var(--amber) 0px, var(--amber) 10px,
        #ffffff 10px, #ffffff 14px,
        var(--danger) 14px, var(--danger) 24px,
        #ffffff 24px, #ffffff 28px
    );
    opacity: 0.9;
}

.session-header input.session-label {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 16px;
    letter-spacing: 0.01em;
    background: transparent;
    border: none;
    color: white;
    border-bottom: 1px solid transparent;
    min-width: 160px;
}
.session-header input.session-label:focus { outline: none; border-bottom-color: var(--amber); }

.session-field {
    display: flex;
    flex-direction: column;
    gap: 2px;
    font-size: 11px;
    color: #AEC0D2;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.session-field input {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 6px;
    color: white;
    padding: 5px 8px;
    width: 90px;
    font-family: var(--font-mono);
}
.session-field input::placeholder { color: #7E90A3; }

.session-header .spacer { flex: 1; }

.session-clock {
    text-align: right;
    font-family: var(--font-mono);
}
.session-clock .label {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #AEC0D2;
}
.session-clock .value {
    font-size: 18px;
    color: var(--amber);
    font-weight: 600;
}

.block-list {
    min-height: 46px;
    padding: 10px;
}
.block-list:empty::before {
    content: "No events yet — add one below, or drag one in from another session.";
    display: block;
    color: var(--muted);
    font-size: 13px;
    padding: 14px 8px;
    font-style: italic;
}

.block {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 10px 12px;
    margin-bottom: 8px;
}
.block.sortable-ghost { opacity: 0.35; }
.block.missing {
    border-color: #EAC3C0;
    background: #FBF2F1;
}

.drag-handle {
    cursor: grab;
    color: #B7C2CA;
    font-size: 16px;
    padding: 0 2px;
    user-select: none;
}

.block .info { flex: 1; min-width: 180px; }
.block .event-name { font-weight: 600; font-size: 14px; }
.block .age-group { font-size: 12px; color: var(--muted); }
.block .warn { color: var(--danger); font-size: 12px; margin-left: 6px; }

.block .field {
    display: flex;
    flex-direction: column;
    gap: 2px;
    font-size: 10px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.block .field input {
    width: 64px;
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 4px 6px;
    font-family: var(--font-mono);
}

.heats-badge {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--teal);
    background: #E4F4F5;
    border-radius: 6px;
    padding: 4px 8px;
    white-space: nowrap;
}

.time-badge {
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 15px;
    background: var(--navy);
    color: var(--amber);
    border-radius: 6px;
    padding: 6px 10px;
    letter-spacing: 0.02em;
    white-space: nowrap;
    min-width: 78px;
    text-align: center;
}

.session-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px 14px;
}

/* ---------- Add-event form ---------- */

.add-event-form {
    display: flex;
    align-items: flex-end;
    gap: 10px;
    flex-wrap: wrap;
    background: #EEF3F6;
    border-radius: 8px;
    padding: 12px;
    margin: 0 10px 12px;
}
.add-event-form .field {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 11px;
    color: var(--muted);
}
.add-event-form select, .add-event-form input {
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 6px 8px;
}
.add-event-form .ag-checks {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    max-width: 420px;
}
.add-event-form .ag-checks label {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    background: white;
    border: 1px solid var(--line);
    padding: 4px 8px;
    border-radius: 6px;
}
.btn-primary {
    background: var(--teal);
    color: white;
    border: none;
    border-radius: 6px;
    padding: 8px 16px;
    font-weight: 600;
    font-size: 13px;
}
.btn-primary:hover { background: #157F8A; }
.btn-secondary {
    background: var(--navy);
    color: white;
    border: none;
    border-radius: 6px;
    padding: 8px 14px;
    font-size: 13px;
}

/* ---------- Setup tab ---------- */

.setup-section {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 24px;
}
.setup-section h2 {
    font-family: var(--font-display);
    font-size: 16px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin: 0 0 14px;
    color: var(--navy);
}
.config-grid {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}
.config-grid .field {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 12px;
    color: var(--muted);
}
.config-grid input, .config-grid select {
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 6px 10px;
    width: 160px;
}

table.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}
table.data-table th {
    text-align: left;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--muted);
    border-bottom: 1px solid var(--line);
    padding: 6px 8px;
}
table.data-table td {
    padding: 6px 8px;
    border-bottom: 1px solid #EEF2F4;
}
table.data-table input[type=text] {
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 5px 8px;
    width: 100%;
}
table.data-table input.time-cell {
    font-family: var(--font-mono);
    width: 90px;
}
table.data-table select {
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 5px 6px;
}

.matrix-wrap { overflow-x: auto; }
table.matrix { border-collapse: collapse; font-size: 12px; }
table.matrix th, table.matrix td {
    border: 1px solid var(--line);
    padding: 6px;
    text-align: center;
}
table.matrix th { background: var(--navy); color: white; font-weight: 500; }
table.matrix td:first-child, table.matrix th:first-child {
    text-align: left;
    position: sticky;
    left: 0;
    background: var(--card);
    z-index: 1;
    min-width: 150px;
}
table.matrix th:first-child { background: var(--navy-2); }

.hint {
    color: var(--muted);
    font-size: 12px;
    margin-top: 8px;
}

.footer-note {
    text-align: center;
    color: var(--muted);
    font-size: 12px;
    margin-top: 40px;
}