* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #0e1117; --panel: #1e1e2e; --input: #262730; --border: #444; --border-soft: #333;
  --text: #fafafa; --muted: #aaa; --accent: #4a90d9; --danger: #e05252; --ok: #3fb96b; --warn: #e0a030;
}
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg); color: var(--text); padding: 16px; padding-bottom: 64px; line-height: 1.4; }
.container { max-width: 820px; margin: 0 auto; }
.hidden { display: none !important; }
h1 { font-size: 22px; margin-bottom: 12px; }
h2 { font-size: 17px; margin: 24px 0 10px; }
h3 { font-size: 15px; margin-bottom: 6px; }
a { color: var(--accent); }
.muted { color: var(--muted); font-size: 13px; }
.error { color: #ff6b6b; font-size: 13px; margin-bottom: 8px; }
.info { background: rgba(74, 144, 217, 0.12); border: 1px solid rgba(74, 144, 217, 0.35); border-radius: 8px; padding: 10px 12px; font-size: 14px; margin-bottom: 12px; }

/* FORM CONTROLS */
input, select, textarea { width: 100%; padding: 9px 10px; border-radius: 8px; border: 1px solid var(--border); background: var(--input); color: var(--text); font-size: 15px; font-family: inherit; }
textarea { min-height: 90px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }
label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.field { margin-bottom: 10px; }
button, .btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 9px 14px; border-radius: 8px; border: 1px solid var(--border); background: var(--input); color: var(--text); font-size: 14px; font-family: inherit; cursor: pointer; text-decoration: none; user-select: none; }
button:hover { border-color: var(--accent); color: var(--accent); }
button:disabled { opacity: 0.5; cursor: default; }
button.primary { background: var(--accent); border-color: var(--accent); color: white; font-weight: 600; }
button.primary:hover { filter: brightness(1.1); color: white; }
button.danger:hover { border-color: var(--danger); color: var(--danger); }
button.small { padding: 5px 10px; font-size: 13px; }
button.link { background: none; border: none; color: var(--accent); padding: 0; text-decoration: underline; }
.row { display: flex; gap: 8px; align-items: center; }
.row > .grow { flex: 1; min-width: 0; }
.buttons { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 8px; margin: 10px 0; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { padding: 6px 12px; border-radius: 16px; border: 1px solid var(--border); background: var(--input); font-size: 13px; cursor: pointer; user-select: none; }
.chip.on { background: var(--accent); border-color: var(--accent); color: white; }
.check { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text); margin: 8px 0; cursor: pointer; }
.check input { width: auto; }

/* PANELS */
.card { background: var(--panel); border: 1px solid var(--border-soft); border-radius: 10px; padding: 12px; margin-bottom: 10px; }
details.card > summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; align-items: center; gap: 8px; }
details.card > summary::before { content: '▸'; color: var(--muted); transition: transform 0.15s; }
details.card[open] > summary::before { transform: rotate(90deg); }
details.card > summary::-webkit-details-marker { display: none; }
details.card[open] > summary { margin-bottom: 10px; }
details.card details.card { background: var(--bg); }
.list-row { display: flex; align-items: center; gap: 8px; padding: 8px 0; border-bottom: 1px solid var(--border-soft); }
.list-row:last-child { border-bottom: none; }
.list-row .grow { flex: 1; min-width: 0; }
.tag.pending { color: var(--warn); border-color: var(--warn); }
.tag { font-size: 11px; padding: 2px 8px; border-radius: 10px; background: var(--input); border: 1px solid var(--border); color: var(--muted); font-weight: 400; }

/* NAV */
nav { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 14px; margin-bottom: 20px; border-bottom: 1px solid var(--border-soft); padding-bottom: 10px; }
nav .brand { display: flex; align-items: center; gap: 8px; font-weight: 700; margin-right: 8px; color: var(--text); text-decoration: none; }
nav .brand img { width: 28px; height: 28px; border-radius: 6px; }
nav a.nav-link { color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 600; padding: 4px 0; }
nav a.nav-link.active { color: var(--text); border-bottom: 2px solid var(--accent); }
nav .spacer { flex: 1; }
nav .who { font-size: 13px; color: var(--muted); }
nav .logout { background: none; border: none; color: var(--muted); font-size: 13px; padding: 4px 0; }

/* AUTH */
.auth-box { max-width: 360px; margin: 60px auto; background: var(--panel); border-radius: 12px; padding: 24px; }
.auth-box .logo { display: block; width: 72px; height: 72px; border-radius: 12px; margin: 0 auto 12px; }
.auth-box h2 { margin: 0 0 16px; text-align: center; }
.auth-box input { margin-bottom: 12px; }
.auth-box button { width: 100%; margin-bottom: 8px; }
.auth-box .toggle { text-align: center; color: var(--muted); font-size: 13px; margin-top: 8px; }

/* SESSIONS */
.superset { border: 1px solid var(--border-soft); border-radius: 10px; padding: 10px; margin-bottom: 10px; }
.superset-head { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; font-weight: 600; }
.superset-head .grow { flex: 1; }
.superset-head input { width: 70px; }
.round-title { font-style: italic; font-weight: 600; margin: 12px 0 6px; color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: 0.04em; }
.round-title:first-child { margin-top: 0; }
.exercise-log { padding: 8px 0; border-top: 1px solid var(--border-soft); }
.exercise-log:first-of-type { border-top: none; }
.exercise-log .name { font-weight: 600; }
.metric-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(90px, 1fr)); gap: 8px; margin-top: 6px; }
.metric-grid input { text-align: center; font-size: 17px; }
.stepper { display: flex; }
.stepper input { border-radius: 0; border-left: none; border-right: none; -moz-appearance: textfield; min-width: 0; }
.stepper input::-webkit-outer-spin-button, .stepper input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.stepper button { padding: 6px 12px; font-size: 17px; border-radius: 0; }
.stepper button:first-child { border-radius: 8px 0 0 8px; }
.stepper button:last-child { border-radius: 0 8px 8px 0; }
.video { position: relative; width: 100%; max-width: 560px; aspect-ratio: 16 / 9; margin: 8px 0; }
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; border-radius: 8px; }
.history-entry { padding: 8px 0; border-top: 1px solid var(--border-soft); }
.history-entry pre { font-family: inherit; font-size: 13px; color: var(--muted); white-space: pre-wrap; margin-top: 4px; }
.confirm { border: 1px solid var(--warn); border-radius: 8px; padding: 10px; margin: 10px 0; }

/* TOASTS + STATUS BANNER */
#toasts { position: fixed; top: 16px; right: 16px; left: 16px; display: flex; flex-direction: column; align-items: flex-end; gap: 8px; z-index: 50; pointer-events: none; }
.toast { background: var(--panel); border: 1px solid var(--border); border-left: 4px solid var(--ok); border-radius: 8px; padding: 10px 14px; font-size: 14px; max-width: 360px; box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4); animation: toast-in 0.15s ease-out; }
.toast.error { border-left-color: var(--danger); color: var(--text); margin: 0; }
@keyframes toast-in { from { opacity: 0; transform: translateY(-6px); } }
.status-banner { position: fixed; left: 0; right: 0; bottom: 0; text-align: center; font-size: 12px; color: var(--warn); background: var(--panel); border-top: 1px solid var(--border-soft); padding: 8px 16px; padding-bottom: calc(8px + env(safe-area-inset-bottom)); transform: translateY(100%); transition: transform 0.2s ease; z-index: 10; }
.status-banner.visible { transform: translateY(0); }