:root {
    --bg: #14181f;
    --surface: #1e2430;
    --surface-2: #262e3d;
    --border: #333c4d;
    --text: #e8ebf0;
    --text-dim: #9aa3b5;
    --accent: #5b8cff;
    --danger: #ff6b6b;
    --success: #4caf7d;
    --radius: 10px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    -webkit-font-smoothing: antialiased;
    padding-bottom: 2rem;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.topbar__brand {
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
    font-size: 1.05rem;
}

.topbar__nav {
    display: flex;
    gap: 0.25rem;
    flex-wrap: wrap;
    overflow-x: auto;
}

.topbar__nav a {
    color: var(--text-dim);
    text-decoration: none;
    padding: 0.4rem 0.65rem;
    border-radius: 999px;
    font-size: 0.9rem;
    white-space: nowrap;
}

.topbar__nav a.is-active {
    background: var(--accent);
    color: #0b0e14;
    font-weight: 600;
}

main {
    max-width: 720px;
    margin: 0 auto;
    padding: 1rem;
}

h1 { font-size: 1.3rem; margin: 0.5rem 0 1rem; }
h2 { font-size: 1.05rem; margin: 1.5rem 0 0.75rem; }

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    margin-bottom: 0.75rem;
}

.day-grid {
    display: grid;
    gap: 0.5rem;
}

.chip-row {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 0.5rem;
}

.chip {
    display: inline-flex;
    align-items: center;
    background: var(--surface);
    border: 1px solid var(--accent);
    color: var(--text);
    border-radius: 999px;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    font-weight: 600;
}

.chip--draggable {
    cursor: grab;
    touch-action: none;
    -webkit-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
}

.chip--boulder { border-color: #ffb37f; }
.chip--extra { border-color: var(--border); font-weight: 500; }

.chip--ghost {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
    opacity: 0.95;
}

.agenda-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.75rem 1rem;
    gap: 0.75rem;
    min-height: 3rem;
}

.agenda-row.is-today {
    border-color: var(--accent);
    /* Clears the sticky topbar (which can wrap to two lines on narrow
       screens) when this row is scrolled into view via scrollIntoView(). */
    scroll-margin-top: 6rem;
}

.agenda-row.is-past {
    opacity: 0.55;
}

.agenda-row.is-drag-over {
    border-color: var(--accent);
    background: var(--surface-2);
}

.agenda-row__date {
    font-weight: 600;
    min-width: 4.5rem;
    color: var(--text-dim);
    font-size: 0.85rem;
}

.agenda-row.is-today .agenda-row__date {
    color: var(--accent);
}

.agenda-row__sessions {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    flex: 1;
    justify-content: flex-end;
}

.session-chip {
    display: inline-block;
    background: var(--surface-2);
    color: #7fd0ff;
    text-decoration: none;
    border-radius: 999px;
    padding: 0.3rem 0.7rem;
    font-size: 0.8rem;
}

.session-chip--boulder { color: #ffb37f; }

.session-chip.is-complete {
    background: rgba(76, 175, 125, 0.12);
    border: 1px solid var(--success);
    color: var(--success);
}

.agenda-row.is-day-complete {
    border-color: var(--success);
    background: rgba(76, 175, 125, 0.06);
}

.phase-tabs {
    display: flex;
    gap: 0.25rem;
    margin-top: 0.75rem;
    flex-wrap: wrap;
}

.phase-tabs a {
    color: var(--text-dim);
    text-decoration: none;
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    font-size: 0.85rem;
    border: 1px solid var(--border);
}

.phase-tabs a.is-active {
    background: var(--accent);
    color: #0b0e14;
    border-color: var(--accent);
    font-weight: 600;
}

.tag {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    font-size: 0.75rem;
    background: var(--surface-2);
    color: var(--text-dim);
}
.tag--gym { color: #7fd0ff; }
.tag--boulder { color: #ffb37f; }
.tag--rest { color: var(--text-dim); }
.tag--pr { color: #ffd166; background: rgba(255, 209, 102, 0.12); font-weight: 600; }

.pr-banner {
    border-color: #ffd166;
    background: rgba(255, 209, 102, 0.08);
    font-weight: 600;
}

input.is-prefilled {
    border-color: var(--accent);
}

.btn {
    display: inline-block;
    background: var(--accent);
    color: #0b0e14;
    text-decoration: none;
    padding: 0.55rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    border: none;
    cursor: pointer;
}

.btn--ghost {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}

.btn--danger {
    background: var(--danger);
    color: #1a0b0b;
}

.btn--sm { padding: 0.35rem 0.7rem; font-size: 0.8rem; }

.inline { display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: center; }

label { display: block; font-size: 0.85rem; color: var(--text-dim); margin-bottom: 0.25rem; }

input, select, textarea {
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 8px;
    padding: 0.55rem 0.6rem;
    font-size: 1rem;
    width: 100%;
}

.field { margin-bottom: 0.75rem; }

.row { display: flex; gap: 0.5rem; }
.row > * { flex: 1; }

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 0.4rem 0.5rem; border-bottom: 1px solid var(--border); }
th { color: var(--text-dim); font-weight: 600; }

.set-row { display: grid; grid-template-columns: 1.5fr 1fr 1fr 0.65fr auto; gap: 0.35rem; align-items: center; margin-bottom: 0.4rem; }
.set-row__rir { text-align: center; padding-left: 0.3rem; padding-right: 0.3rem; }
.exercise-block { border-top: 1px solid var(--border); padding-top: 0.75rem; margin-top: 0.75rem; transition: opacity 0.2s, background 0.2s; }
.exercise-block:first-child { border-top: none; padding-top: 0; margin-top: 0; }
.exercise-block__name { font-weight: 600; margin-bottom: 0.5rem; }
.exercise-block.is-filled {
    background: rgba(76, 175, 125, 0.08);
    border-radius: var(--radius);
    padding: 0.75rem;
    margin-left: -0.75rem;
    margin-right: -0.75rem;
    opacity: 0.75;
}
.exercise-block.is-filled .exercise-block__name { color: var(--success); }

.exercise-notes { margin-top: 0.5rem; }
.exercise-notes summary {
    color: var(--text-dim);
    font-size: 0.85rem;
    cursor: pointer;
    user-select: none;
}
.exercise-notes textarea { margin-top: 0.4rem; }

#timer-card { border-color: var(--accent); }
.timer-display { font-size: 1.4rem; font-weight: 700; font-variant-numeric: tabular-nums; }

.muted { color: var(--text-dim); font-size: 0.85rem; }
.empty { color: var(--text-dim); font-style: italic; padding: 0.5rem 0; }

@media (prefers-color-scheme: light) {
    :root {
        --bg: #f4f5f7;
        --surface: #ffffff;
        --surface-2: #eef0f4;
        --border: #dde1e8;
        --text: #1a1d24;
        --text-dim: #6b7280;
    }
    .topbar__nav a.is-active, .btn { color: #fff; }
}