/* Student tasks — aligned with main LogicFlow (global nav + mesh + light lab theme) */

:root {
  --st-card: rgba(255, 255, 255, 0.72);
  --st-card-border: rgba(15, 15, 26, 0.08);
  --st-text: #0f0f1a;
  --st-muted: #475569;
  --st-soft: #94a3b8;
  --st-shadow: 0 18px 48px rgba(15, 15, 26, 0.08);
  --st-shadow-sm: 0 8px 28px rgba(15, 15, 26, 0.06);
  --st-radius: 1.35rem;
  --st-radius-sm: 0.85rem;
  --st-accent: #fde68a;
  --st-accent-border: rgba(245, 158, 11, 0.35);
  --st-green: #10b981;
  --st-green-soft: rgba(16, 185, 129, 0.14);
  --st-amber: #f59e0b;
  --st-amber-soft: rgba(245, 158, 11, 0.16);
  --st-violet: #7c3aed;
  --st-violet-soft: rgba(124, 58, 237, 0.12);
}

body.st-tasks-page {
  font-family: var(--lf-font-body);
  color: var(--st-text);
  min-height: 100vh;
  background-color: #eceeff !important;
  line-height: 1.5;
}

.st-preview-banner {
  position: relative;
  z-index: 5;
  padding: 0.65rem 1.25rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--st-muted);
  background: rgba(255, 255, 255, 0.55);
  border-bottom: 1px solid rgba(15, 15, 26, 0.06);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.st-preview-banner a {
  color: #1a56db;
  font-weight: 600;
}

@media (max-width: 900px) {
  body.st-tasks-page nav .nav-links {
    display: flex;
    flex-wrap: nowrap;
    gap: 1.25rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    max-width: min(52vw, 320px);
    padding-bottom: 2px;
    mask-image: linear-gradient(90deg, #000 78%, transparent 100%);
  }

  body.st-tasks-page nav .nav-links li {
    flex-shrink: 0;
  }
}

.page.st-page {
  position: relative;
  z-index: 10;
  padding-top: var(--lf-main-padding-top);
  padding-left: clamp(1rem, 4vw, 2rem);
  padding-right: clamp(1rem, 4vw, 2rem);
  padding-bottom: 3rem;
  max-width: 1320px;
  margin: 0 auto;
}

.st-shell {
  position: relative;
  z-index: 1;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0.5rem 0 2rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 960px) {
  .st-shell {
    grid-template-columns: minmax(240px, 280px) minmax(0, 1fr) minmax(220px, 280px);
    align-items: start;
    gap: 1.75rem;
  }
}

/* ── Left column ── */
.st-profile {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.st-avatar {
  width: 3.25rem;
  height: 3.25rem;
  border-radius: 50%;
  background: linear-gradient(135deg, #818cf8, #4f46e5);
  color: #fff;
  font-weight: 700;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.25);
  font-family: var(--lf-font-display);
}

.st-greeting {
  font-family: var(--lf-font-display);
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--st-text);
}

.st-profile-sub {
  font-size: 0.82rem;
  color: var(--st-muted);
  margin-top: 0.2rem;
  font-weight: 500;
}

.st-profile-sub .st-email-hint {
  font-family: var(--lf-font-mono);
  font-size: 0.72rem;
  color: var(--st-soft);
  word-break: break-all;
}

.st-card {
  background: var(--st-card);
  border: 1px solid var(--st-card-border);
  border-radius: var(--st-radius);
  padding: 1.15rem 1.25rem;
  box-shadow: var(--st-shadow-sm);
  margin-bottom: 1rem;
}

.st-course-pill .st-label {
  display: block;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--st-soft);
  margin-bottom: 0.35rem;
}

.st-course-pill strong {
  display: block;
  font-size: 1rem;
  font-weight: 700;
}

.st-course-pill .st-muted {
  display: block;
  font-size: 0.78rem;
  color: var(--st-muted);
  margin-top: 0.25rem;
}

.st-metric-block {
  text-align: left;
  padding: 1.35rem 1.25rem;
  background: var(--st-card);
  border-radius: var(--st-radius);
  border: 1px solid var(--st-card-border);
  box-shadow: var(--st-shadow);
  margin-bottom: 1rem;
}

.st-metric-value {
  font-size: clamp(2.75rem, 8vw, 3.75rem);
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 1;
}

.st-metric-suffix {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--st-muted);
  margin-left: 0.1rem;
}

.st-metric-label {
  font-size: 0.95rem;
  font-weight: 600;
  margin-top: 0.65rem;
  color: var(--st-text);
}

.st-metric-sub {
  font-size: 0.8rem;
  color: var(--st-muted);
  margin-top: 0.2rem;
}

.st-activity--accent {
  background: linear-gradient(145deg, #fef3c7 0%, #fde68a 100%);
  border-color: var(--st-accent-border);
  box-shadow: 0 12px 32px rgba(245, 158, 11, 0.12);
}

.st-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.st-card-head h2 {
  font-size: 0.95rem;
  font-weight: 700;
}

.st-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.st-pill--stat {
  background: rgba(28, 25, 23, 0.08);
  color: var(--st-text);
}

.st-pill--lab {
  background: var(--st-green-soft);
  color: #047857;
}

.st-pill--quiz {
  background: var(--st-amber-soft);
  color: #b45309;
}

.st-pill--reading {
  background: rgba(120, 113, 108, 0.12);
  color: var(--st-muted);
}

.st-pill--priority {
  background: rgba(239, 68, 68, 0.12);
  color: #b91c1c;
  margin-top: 0.75rem;
}

.st-activity-rows {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.st-activity-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--st-text);
}

.st-activity-row span {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--st-muted);
  font-weight: 500;
  font-size: 0.78rem;
}

.st-dot {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--st-text);
  opacity: 0.35;
}

/* ── Center column — task cards ── */
.st-section-title {
  font-family: var(--lf-font-display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 0.35rem;
}

.st-section-sub {
  font-size: 0.88rem;
  color: var(--st-muted);
  margin-bottom: 1.25rem;
}

.st-task-stack {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.st-task-card {
  background: var(--st-card);
  border: 1px solid var(--st-card-border);
  border-radius: var(--st-radius);
  padding: 1.2rem 1.35rem;
  box-shadow: var(--st-shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.st-task-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 22px 56px rgba(28, 25, 23, 0.09);
}

.st-task-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}

.st-task-top h3 {
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.st-task-meta {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(7rem, 1fr));
  gap: 0.65rem 1rem;
  margin-bottom: 0.85rem;
}

.st-meta-k {
  display: block;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--st-soft);
  margin-bottom: 0.15rem;
}

.st-meta-v {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--st-text);
}

.st-progress-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.st-progress-track {
  flex: 1;
  height: 0.45rem;
  border-radius: 999px;
  background: rgba(28, 25, 23, 0.08);
  overflow: hidden;
}

.st-progress-fill {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, #34d399, #10b981);
  transition: width 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.st-progress-pct {
  font-family: var(--lf-font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--st-muted);
  min-width: 2.25rem;
  text-align: right;
}

.st-task-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.85rem;
}

.st-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.55rem 1rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: background 0.2s, transform 0.15s;
  font-family: inherit;
}

.st-btn--ghost {
  background: #fff;
  border: 1px solid rgba(28, 25, 23, 0.12);
  color: var(--st-text);
}

.st-btn--ghost:hover {
  background: rgba(28, 25, 23, 0.04);
}

.st-btn--primary {
  background: #111;
  color: #fff;
}

.st-btn--primary:hover {
  background: #252525;
  transform: translateY(-1px);
}

/* Avatar stack hint */
.st-mini-avatars {
  display: flex;
  align-items: center;
}

.st-mini-av {
  width: 1.65rem;
  height: 1.65rem;
  border-radius: 50%;
  border: 2px solid #fff;
  margin-left: -0.45rem;
  background: linear-gradient(135deg, #a78bfa, #7c3aed);
  font-size: 0.55rem;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}

.st-mini-av:first-child {
  margin-left: 0;
}

.st-mini-more {
  width: 1.65rem;
  height: 1.65rem;
  border-radius: 50%;
  border: 2px solid #fff;
  margin-left: -0.45rem;
  background: rgba(28, 25, 23, 0.08);
  font-size: 0.55rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--st-muted);
}

/* ── Right column ── */
.st-quick-list {
  list-style: none;
}

.st-quick-list li {
  border-bottom: 1px solid rgba(28, 25, 23, 0.06);
}

.st-quick-list li:last-child {
  border-bottom: none;
}

.st-quick-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.75rem 0;
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--st-text);
  text-decoration: none;
  transition: color 0.2s;
}

.st-quick-list a:hover {
  color: #4338ca;
}

.st-quick-list .st-arrow {
  color: var(--st-soft);
  font-size: 1rem;
}

.st-card h2 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.65rem;
}

.st-note {
  font-size: 0.82rem;
  color: var(--st-muted);
  line-height: 1.55;
}

@media (prefers-reduced-motion: reduce) {
  .st-task-card:hover {
    transform: none;
  }

  .st-progress-fill {
    transition: none;
  }

  .st-btn--primary:hover {
    transform: none;
  }
}