/* Hallmark · genre: modern-minimal · structure: Panel Shell (teacher) + Focus Wizard (student) · design-system: design.md · designed-as-app */
/* Hallmark · pre-emit critique: P4 H4 E4 S4 R4 V4 */

:root {
  --paper: oklch(14% 0.02 250);
  --paper-2: oklch(18.5% 0.02 250);
  --paper-3: oklch(23% 0.025 250);
  --ink: oklch(93% 0.01 250);
  --ink-muted: oklch(64% 0.02 250);
  --border: oklch(28% 0.02 250);
  --border-strong: oklch(38% 0.03 250);
  --accent: oklch(78% 0.14 195);
  --accent-2: oklch(70% 0.18 300);
  --accent-ink: oklch(12% 0.02 250);
  --danger: oklch(68% 0.19 25);
  --danger-bg: oklch(24% 0.06 25);
  --success: oklch(75% 0.15 150);

  --font-body: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Menlo", "Consolas", "PingFang SC", "Microsoft YaHei", monospace;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-8: 48px;
  --space-10: 64px;

  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 150ms;
  --dur-base: 220ms;

  --focus-ring: 0 0 0 3px color-mix(in oklch, var(--accent) 30%, transparent);
  --glow-accent: 0 0 0 1px color-mix(in oklch, var(--accent) 45%, transparent), 0 4px 20px -4px color-mix(in oklch, var(--accent) 35%, transparent);
}

* { box-sizing: border-box; }
html { overflow-x: clip; }

body {
  margin: 0;
  overflow-x: clip;
  font-family: var(--font-body);
  background:
    radial-gradient(ellipse 900px 520px at 12% -8%, color-mix(in oklch, var(--accent) 13%, transparent), transparent 60%),
    radial-gradient(ellipse 700px 460px at 105% 4%, color-mix(in oklch, var(--accent-2) 11%, transparent), transparent 60%),
    var(--paper);
  background-attachment: fixed;
  color: var(--ink);
  line-height: 1.5;
  min-width: 0;
}

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 40px 20px 80px;
  min-width: 0;
}

h1 { font-size: 24px; font-weight: 700; letter-spacing: -0.01em; margin: 0 0 4px; color: var(--ink); }
h2 { font-size: 18px; font-weight: 700; margin: 0 0 12px; color: var(--ink); }
p.sub { color: var(--ink-muted); margin: 0 0 24px; }

.card {
  background: var(--paper-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-5);
  min-width: 0;
}

label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink-muted);
  margin: var(--space-4) 0 var(--space-2);
}
label:first-child { margin-top: 0; }

input[type="text"], input[type="password"], input[type="file"] {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-family: inherit;
  background: var(--paper-3);
  color: var(--ink);
  transition: border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}
input[type="text"]::placeholder, input[type="password"]::placeholder { color: var(--ink-muted); }
input[type="text"]:hover, input[type="password"]:hover { border-color: color-mix(in oklch, var(--border-strong) 60%, var(--accent) 40%); }
input[type="text"]:focus, input[type="password"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: var(--focus-ring);
}
input[type="file"] { color: var(--ink-muted); font-size: 13px; cursor: pointer; }
input[type="file"]::file-selector-button {
  font-family: inherit;
  font-weight: 700;
  font-size: 13px;
  padding: 6px 12px;
  margin-right: 10px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--paper-3);
  color: var(--ink);
  cursor: pointer;
}

button {
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  padding: 11px 22px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  color: var(--accent-ink);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), filter var(--dur-fast) var(--ease-out);
}
button:hover { filter: brightness(1.08); box-shadow: var(--glow-accent); }
button:active { transform: translateY(1px); }
button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button:disabled { background: var(--paper-3); color: var(--ink-muted); cursor: not-allowed; filter: none; box-shadow: none; }

button.secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--border-strong);
}
button.secondary:hover { border-color: var(--accent); background: color-mix(in oklch, var(--accent) 10%, transparent); box-shadow: none; filter: none; }

button.danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--border-strong);
}
button.danger:hover { border-color: var(--danger); background: var(--danger-bg); box-shadow: none; filter: none; }

.row { display: flex; gap: var(--space-3); flex-wrap: wrap; align-items: center; }

.error { color: var(--danger); font-size: 14px; margin-top: 10px; }
.hint { color: var(--ink-muted); font-size: 13px; }

.stage-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  background: color-mix(in oklch, var(--accent) 14%, var(--paper-3));
  border: 1px solid color-mix(in oklch, var(--accent) 35%, transparent);
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 12px 8px; border-bottom: 1px solid var(--border); vertical-align: top; color: var(--ink); }
th { color: var(--ink-muted); font-weight: 700; font-size: 12px; letter-spacing: 0.02em; }
td { font-family: var(--font-mono); }
td:first-child, td:nth-child(2) { font-family: var(--font-body); }
tbody tr:hover { background: var(--paper-3); }

.feast-table td, .feast-table th { padding: 6px 8px; font-size: 13px; font-family: var(--font-body); }

a.link { color: var(--accent); text-decoration: none; }
a.link:hover { text-decoration: underline; }
a.link:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }

.progress-dots { display: flex; gap: 6px; margin-bottom: 18px; }
.progress-dots span {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--border);
  transition: background var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out);
}
.progress-dots span.done { background: var(--accent); }
.progress-dots span.active { background: var(--accent); box-shadow: var(--focus-ring); }

.resume-banner {
  margin-bottom: 18px;
  padding: 11px 14px;
  border: 1px solid color-mix(in oklch, var(--success) 35%, var(--border));
  border-radius: var(--radius-sm);
  background: color-mix(in oklch, var(--success) 9%, var(--paper-2));
  color: var(--success);
  font-size: 13px;
}

.save-status { margin: 0; color: var(--success); font-size: 13px; }

.record-panel { display: flex; flex-direction: column; align-items: center; gap: 14px; padding: 20px 0; }
.rec-dot {
  width: 14px; height: 14px; border-radius: 50%; background: var(--danger);
  box-shadow: 0 0 0 4px var(--danger-bg);
  animation: pulse 1.2s infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .35; } }

.transcript-box {
  width: 100%;
  min-height: 90px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  background: var(--paper-3);
  color: var(--ink);
  font-size: 15px;
  white-space: pre-wrap;
}
.transcript-box .interim { color: var(--ink-muted); }
textarea.transcript-box:focus { outline: none; border-color: var(--accent); box-shadow: var(--focus-ring); }

img.stage-img { max-width: 100%; border-radius: var(--radius-md); border: 1px solid var(--border); display: block; margin-bottom: 16px; }
.story-image-card { margin-bottom: 18px; }
.story-image-card img.stage-img { width: 100%; margin-bottom: 0; object-fit: contain; }
.stage-instruction { margin: 14px 0 4px; color: var(--ink-muted); }
.stage-navigation { display: flex; justify-content: space-between; gap: 12px; margin-top: 18px; }
.stage-navigation button { min-width: 110px; }

.assignment-card { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; flex-wrap: wrap; }
.assignment-card .meta { color: var(--ink-muted); font-size: 13px; margin-top: 4px; font-family: var(--font-mono); }

.details-row { display: none; }
.details-row.open { display: table-row; }

audio { accent-color: var(--accent); }

@media (prefers-reduced-motion: reduce) {
  .rec-dot { animation: none; opacity: 1; }
  button, input, .progress-dots span { transition: none; }
}

@media (max-width: 420px) {
  .wrap { padding: 28px 16px 60px; }
  .card { padding: var(--space-5); }
}