/* =====================================================================
 * Student dashboard (sd-*) and lesson player (lp-*)
 * Views: frontend/layouts/student, frontend/student/*,
 *        components/frontend/{progress-ring,learning-card}
 * ===================================================================== */
:root {
  --sd-ink: #0f2a4a;
  --sd-muted: rgba(15, 42, 74, 0.62);
  --sd-card: #ffffff;
  --sd-soft: #f2f8fc;
  --sd-line: rgba(15, 42, 74, 0.08);
  --sd-grad: linear-gradient(135deg, #02ad8f 0%, #22b3b6 45%, #33a4da 75%, #1a83c1 100%);
  --sd-shadow: 0 14px 34px rgba(15, 42, 74, 0.08);
  --sd-radius: 20px;
}

html[data-theme="dark"] {
  --sd-ink: #eaf6fb;
  --sd-muted: rgba(199, 228, 245, 0.68);
  --sd-card: rgba(11, 33, 64, 0.86);
  --sd-soft: rgba(15, 42, 74, 0.7);
  --sd-line: rgba(143, 217, 224, 0.12);
  --sd-shadow: 0 14px 34px rgba(0, 0, 0, 0.3);
}

.sd-muted { color: var(--sd-muted); }

/* ---------- Header ---------- */
.sd-hero {
  position: relative;
  overflow: hidden;
  padding: 38px 0 92px;
  color: #fff;
  background: var(--sd-grad);
}

.sd-hero::before,
.sd-hero::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.sd-hero::before {
  width: 460px;
  height: 460px;
  top: -260px;
  inset-inline-end: -120px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.22), transparent 65%);
}

.sd-hero::after {
  width: 300px;
  height: 300px;
  bottom: -200px;
  inset-inline-start: 8%;
  background: radial-gradient(circle, rgba(15, 42, 74, 0.25), transparent 70%);
}

.sd-hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.sd-hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  color: #fff;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.28);
}

.sd-hero-title {
  margin: 12px 0 6px;
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  font-weight: 800;
  color: #fff;
}

.sd-hero-text {
  margin: 0;
  max-width: 560px;
  color: rgba(255, 255, 255, 0.88);
}

/* ---------- Shell: sidebar + page ---------- */
.sd-shell {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 270px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  margin-top: -64px;
  padding-bottom: 60px;
}

.sd-side {
  position: sticky;
  top: 96px;
  padding: 18px;
  border-radius: var(--sd-radius);
  background: var(--sd-card);
  border: 1px solid var(--sd-line);
  box-shadow: var(--sd-shadow);
}

.sd-profile {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 16px;
  margin-bottom: 12px;
  border-bottom: 1px dashed var(--sd-line);
}

.sd-avatar {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
  background: var(--sd-grad);
  box-shadow: 0 8px 18px rgba(2, 173, 143, 0.3);
}

.sd-profile-text { min-width: 0; }

.sd-profile-text strong {
  display: block;
  overflow: hidden;
  color: var(--sd-ink);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sd-profile-text small {
  display: block;
  overflow: hidden;
  font-size: 0.76rem;
  color: var(--sd-muted);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sd-nav,
.sd-side-foot {
  display: grid;
  gap: 4px;
}

.sd-side-foot {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--sd-line);
}

.sd-side-foot form { margin: 0; }

.sd-nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border: 0;
  border-radius: 12px;
  font-size: 0.92rem;
  font-weight: 600;
  text-align: start;
  text-decoration: none;
  color: var(--sd-muted);
  background: transparent;
  transition: background 0.2s ease, color 0.2s ease;
}

.sd-nav-link i { font-size: 1.15rem; }

.sd-nav-link:hover {
  color: var(--sd-ink);
  background: var(--sd-soft);
}

.sd-nav-link.is-active {
  color: #fff;
  background: var(--sd-grad);
  box-shadow: 0 8px 18px rgba(26, 131, 193, 0.25);
}

.sd-nav-link.is-danger:hover {
  color: #dc2626;
  background: rgba(220, 38, 38, 0.08);
}

.sd-nav-badge {
  margin-inline-start: auto;
  min-width: 22px;
  padding: 1px 7px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 800;
  text-align: center;
  color: #fff;
  background: #ef4444;
}

.sd-nav-link.is-active .sd-nav-badge {
  color: #1a83c1;
  background: #fff;
}

.sd-main {
  display: grid;
  gap: 22px;
  min-width: 0;
}

/* ---------- Building blocks ---------- */
.sd-panel {
  padding: 22px;
  border-radius: var(--sd-radius);
  background: var(--sd-card);
  border: 1px solid var(--sd-line);
  box-shadow: var(--sd-shadow);
}

.sd-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 14px;
}

.sd-panel-head h2 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--sd-ink);
}

.sd-panel-head h2 i { color: #02ad8f; }

.sd-link {
  font-size: 0.84rem;
  font-weight: 700;
  text-decoration: none;
  color: #1a83c1;
}

.sd-link i { font-size: 0.72rem; }

.sd-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.sd-grid-2.is-wide-first { grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); }

.sd-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 0;
  border-radius: 14px;
  font-weight: 700;
  font-size: 0.92rem;
  text-decoration: none;
  color: #fff !important;
  background: var(--sd-grad);
  box-shadow: 0 10px 22px rgba(26, 131, 193, 0.24);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.sd-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(26, 131, 193, 0.3);
}

.sd-btn.is-small {
  padding: 8px 14px;
  border-radius: 12px;
  font-size: 0.84rem;
}

.sd-btn-ghost {
  color: var(--sd-ink) !important;
  background: var(--sd-soft);
  border: 1px solid var(--sd-line);
  box-shadow: none;
}

.sd-btn-ghost:hover { box-shadow: none; border-color: rgba(2, 173, 143, 0.4); }

.sd-btn-light {
  color: #0f2a4a !important;
  background: #fff;
  box-shadow: 0 10px 22px rgba(15, 42, 74, 0.18);
}

.sd-icon-btn {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid var(--sd-line);
  border-radius: 12px;
  color: var(--sd-ink);
  background: var(--sd-soft);
  transition: background 0.2s ease, color 0.2s ease;
}

.sd-icon-btn:hover { color: #fff; background: var(--sd-grad); }

.sd-chip {
  display: inline-block;
  align-self: flex-start;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--c, #02ad8f);
  background: color-mix(in srgb, var(--c, #02ad8f) 12%, transparent);
}

.sd-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 700;
}

.sd-pill.is-approved { color: #047857; background: rgba(5, 150, 105, 0.12); }
.sd-pill.is-pending { color: #b45309; background: rgba(217, 119, 6, 0.13); }
.sd-pill.is-rejected { color: #b91c1c; background: rgba(220, 38, 38, 0.11); }

html[data-theme="dark"] .sd-pill.is-approved { color: #34d399; }
html[data-theme="dark"] .sd-pill.is-pending { color: #fbbf24; }
html[data-theme="dark"] .sd-pill.is-rejected { color: #f87171; }

.sd-flash {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-radius: 14px;
  font-weight: 600;
  color: #047857;
  background: rgba(5, 150, 105, 0.1);
  border: 1px solid rgba(5, 150, 105, 0.22);
}

.sd-flash.is-error {
  color: #b91c1c;
  background: rgba(220, 38, 38, 0.08);
  border-color: rgba(220, 38, 38, 0.2);
}

html[data-theme="dark"] .sd-flash { color: #6ee7b7; }
html[data-theme="dark"] .sd-flash.is-error { color: #fca5a5; }

.sd-bar {
  position: relative;
  flex: 1;
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(15, 42, 74, 0.08);
}

html[data-theme="dark"] .sd-bar { background: rgba(255, 255, 255, 0.1); }

.sd-bar span {
  position: absolute;
  inset-block: 0;
  inset-inline-start: 0;
  border-radius: inherit;
  background: var(--sd-grad);
  transition: width 0.5s ease;
}

.sd-empty {
  display: grid;
  justify-items: center;
  gap: 6px;
  padding: 26px 10px;
  text-align: center;
}

.sd-empty > i {
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
  margin-bottom: 6px;
  border-radius: 20px;
  font-size: 1.8rem;
  color: #02ad8f;
  background: rgba(2, 173, 143, 0.1);
}

.sd-empty strong { color: var(--sd-ink); font-size: 1.02rem; }

.sd-empty p {
  max-width: 380px;
  margin: 0 0 8px;
  font-size: 0.9rem;
  color: var(--sd-muted);
}

.sd-empty.is-small { padding: 14px 6px; }
.sd-empty.is-small > i { width: 48px; height: 48px; font-size: 1.3rem; }

/* ---------- Progress ring ---------- */
.sd-ring {
  position: relative;
  flex-shrink: 0;
  width: var(--size, 56px);
  height: var(--size, 56px);
  display: inline-grid;
  place-items: center;
}

.sd-ring svg {
  position: absolute;
  inset: 0;
  transform: rotate(-90deg);
}

.sd-ring-track {
  fill: none;
  stroke: rgba(15, 42, 74, 0.08);
  stroke-width: 4;
}

html[data-theme="dark"] .sd-ring-track { stroke: rgba(255, 255, 255, 0.12); }

.sd-ring-bar {
  fill: none;
  stroke-width: 4;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.6s ease;
}

.sd-ring-value {
  position: relative;
  font-size: calc(var(--size, 56px) * 0.26);
  font-weight: 800;
  color: var(--sd-ink);
}

.sd-ring-value small { font-size: 0.6em; }
.sd-ring.is-done .sd-ring-value { color: #02ad8f; }

/* ---------- Overview ---------- */
.sd-resume {
  position: relative;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr) auto;
  align-items: center;
  gap: 22px;
  padding: 20px;
  overflow: hidden;
  border-radius: var(--sd-radius);
  background: var(--sd-card);
  border: 1px solid var(--sd-line);
  box-shadow: var(--sd-shadow);
}

.sd-resume::before {
  content: '';
  position: absolute;
  inset-block: 0;
  inset-inline-start: 0;
  width: 5px;
  background: var(--sd-grad);
}

.sd-resume-cover,
.sd-course-cover {
  position: relative;
  display: block;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-radius: 16px;
  background: color-mix(in srgb, var(--c, #02ad8f) 16%, #0f2a4a);
}

.sd-resume-cover img,
.sd-course-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.sd-resume-cover:hover img,
.sd-course-cover:hover img { transform: scale(1.05); }

.sd-course-art {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 2.2rem;
  color: rgba(255, 255, 255, 0.85);
  background:
    radial-gradient(circle at 30% 20%, color-mix(in srgb, var(--c, #02ad8f) 70%, transparent), transparent 60%),
    linear-gradient(135deg, var(--c, #02ad8f), #0f2a4a);
}

.sd-course-play {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  opacity: 0;
  background: rgba(15, 42, 74, 0.35);
  transition: opacity 0.25s ease;
}

.sd-course-play i {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  padding-inline-start: 3px;
  color: #1a83c1;
  background: #fff;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.25);
}

.sd-resume-cover:hover .sd-course-play,
.sd-course-cover:hover .sd-course-play { opacity: 1; }

.sd-resume-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 800;
  color: #02ad8f;
}

.sd-resume-title {
  margin: 6px 0;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--sd-ink);
}

.sd-resume-lesson {
  margin: 0 0 12px;
  font-size: 0.9rem;
  color: var(--sd-ink);
}

.sd-resume-lesson > span:first-child { color: var(--sd-muted); }

.sd-resume .sd-course-progress { max-width: 420px; margin-bottom: 14px; }

.sd-course-progress {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sd-course-percent {
  min-width: 40px;
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--sd-ink);
}

.sd-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.sd-stat {
  --tone: #02ad8f;
  position: relative;
  display: grid;
  gap: 2px;
  padding: 18px;
  overflow: hidden;
  border-radius: var(--sd-radius);
  background: var(--sd-card);
  border: 1px solid var(--sd-line);
  box-shadow: var(--sd-shadow);
}

.sd-stat.is-gold { --tone: #f59e0b; }
.sd-stat.is-blue { --tone: #33a4da; }
.sd-stat.is-navy { --tone: #6366f1; }

.sd-stat::after {
  content: '';
  position: absolute;
  width: 110px;
  height: 110px;
  top: -50px;
  inset-inline-end: -40px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--tone) 14%, transparent);
}

.sd-stat-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  margin-bottom: 8px;
  border-radius: 14px;
  font-size: 1.25rem;
  color: var(--tone);
  background: color-mix(in srgb, var(--tone) 13%, transparent);
}

.sd-stat strong {
  font-size: 1.7rem;
  font-weight: 800;
  line-height: 1.1;
  color: var(--sd-ink);
}

.sd-stat > span:last-child {
  font-size: 0.84rem;
  color: var(--sd-muted);
}

.sd-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  margin-inline: -10px;
  border-radius: 14px;
  text-decoration: none;
  color: inherit;
  transition: background 0.2s ease;
}

a.sd-row:hover { background: var(--sd-soft); }

.sd-row-text {
  flex: 1;
  min-width: 0;
}

.sd-row-text strong {
  display: block;
  overflow: hidden;
  font-size: 0.93rem;
  color: var(--sd-ink);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sd-row-text small { font-size: 0.8rem; color: var(--sd-muted); }

.sd-row-go {
  font-size: 0.8rem;
  color: var(--sd-muted);
}

.sd-status {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  font-size: 1.2rem;
}

.sd-status.is-pending { color: #d97706; background: rgba(217, 119, 6, 0.12); }
.sd-status.is-approved { color: #059669; background: rgba(5, 150, 105, 0.12); }
.sd-status.is-rejected { color: #dc2626; background: rgba(220, 38, 38, 0.1); }

/* ---------- Notifications ---------- */
.sd-note {
  --tone: #33a4da;
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px;
  margin-inline: -12px;
  border-radius: 14px;
  transition: background 0.2s ease;
}

.sd-note + .sd-note { margin-top: 2px; }
.sd-note:hover { background: var(--sd-soft); }
.sd-note.is-success { --tone: #02ad8f; }
.sd-note.is-warning { --tone: #f59e0b; }
.sd-note.is-danger { --tone: #ef4444; }

.sd-note.is-unread::before {
  content: '';
  position: absolute;
  top: 18px;
  inset-inline-start: 2px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--tone);
}

.sd-note-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  font-size: 1.15rem;
  color: var(--tone);
  background: color-mix(in srgb, var(--tone) 13%, transparent);
}

.sd-note-body {
  flex: 1;
  min-width: 0;
}

.sd-note-body strong {
  display: block;
  font-size: 0.92rem;
  color: var(--sd-ink);
}

.sd-note:not(.is-unread) .sd-note-body strong { font-weight: 600; }

.sd-note-body p {
  margin: 2px 0;
  font-size: 0.88rem;
  color: var(--sd-muted);
}

.sd-note-body small { font-size: 0.76rem; color: var(--sd-muted); }
.sd-note-action { margin: 0; }

/* ---------- Tabs ---------- */
.sd-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

.sd-tabs::-webkit-scrollbar { display: none; }

.sd-tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: 14px;
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  color: var(--sd-muted);
  background: var(--sd-card);
  border: 1px solid var(--sd-line);
}

.sd-tab span {
  min-width: 22px;
  padding: 0 7px;
  border-radius: 999px;
  font-size: 0.74rem;
  text-align: center;
  background: var(--sd-soft);
}

.sd-tab.is-active {
  color: #fff;
  background: var(--sd-grad);
  border-color: transparent;
}

.sd-tab.is-active span { color: #1a83c1; background: #fff; }

/* ---------- Learning cards ---------- */
.sd-course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.sd-course {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: var(--sd-radius);
  background: var(--sd-card);
  border: 1px solid var(--sd-line);
  box-shadow: var(--sd-shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.sd-course:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(15, 42, 74, 0.12);
}

.sd-course .sd-course-cover { border-radius: 0; }

.sd-course-done {
  position: absolute;
  top: 12px;
  inset-inline-start: 12px;
  display: inline-flex;
  gap: 6px;
  align-items: center;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, #f59e0b, #f97316);
  box-shadow: 0 8px 18px rgba(245, 158, 11, 0.35);
}

.sd-course-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 10px;
  padding: 16px;
}

.sd-course-title {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 800;
  line-height: 1.5;
}

.sd-course-title a {
  text-decoration: none;
  color: var(--sd-ink);
}

.sd-course-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.8rem;
  color: var(--sd-muted);
}

.sd-course-next {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0;
  overflow: hidden;
  font-size: 0.82rem;
  color: var(--sd-ink);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sd-course-next i { color: #02ad8f; }
.sd-course .sd-btn { margin-top: auto; }

/* ---------- Requests ---------- */
.sd-requests { display: grid; gap: 4px; padding: 10px 22px; }

.sd-request {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 0;
}

.sd-request + .sd-request { border-top: 1px solid var(--sd-line); }

.sd-request-body {
  flex: 1;
  min-width: 0;
}

.sd-request-title {
  font-weight: 800;
  text-decoration: none;
  color: var(--sd-ink);
}

.sd-request-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 14px;
  margin-top: 4px;
  font-size: 0.8rem;
  color: var(--sd-muted);
}

.sd-request-note {
  margin: 8px 0 0;
  padding: 8px 12px;
  border-radius: 12px;
  font-size: 0.85rem;
  color: var(--sd-ink);
  background: var(--sd-soft);
}

.sd-request-action form { margin: 0; }

/* ---------- Forms ---------- */
.sd-form {
  display: grid;
  gap: 16px;
}

.sd-form > .sd-btn { justify-self: start; }

.sd-field {
  display: grid;
  gap: 6px;
  margin: 0;
}

.sd-field > span {
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--sd-ink);
}

.sd-field input,
.sd-field select,
.sd-phone select,
.sd-phone input {
  width: 100%;
  height: 48px;
  padding: 0 14px;
  border-radius: 14px;
  font-size: 0.95rem;
  color: var(--sd-ink);
  background: var(--sd-soft);
  border: 1px solid var(--sd-line);
  outline: 0;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.sd-field input:focus,
.sd-phone select:focus,
.sd-phone input:focus {
  border-color: #33a4da;
  box-shadow: 0 0 0 4px rgba(51, 164, 218, 0.15);
}

.sd-field input.is-invalid,
.sd-phone input.is-invalid { border-color: #ef4444; }

.sd-phone {
  display: flex;
  gap: 8px;
}

.sd-phone select { width: 130px; flex-shrink: 0; }

.sd-error { font-size: 0.8rem; color: #dc2626; }
.sd-hint { font-size: 0.8rem; color: var(--sd-muted); }
.sd-hint.is-warning { color: #b45309; }

.sd-pagination { display: flex; justify-content: center; }

/* ---------- Responsive ---------- */
@media (max-width: 1199.98px) {
  .sd-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sd-resume { grid-template-columns: 200px minmax(0, 1fr); }
  .sd-resume-ring { display: none; }
}

@media (max-width: 991.98px) {
  .sd-hero { padding-bottom: 34px; }

  .sd-shell {
    grid-template-columns: minmax(0, 1fr);
    margin-top: 0;
    padding-top: 0;
  }

  /* The sidebar becomes a strip of tabs under the header. */
  .sd-side {
    position: sticky;
    top: 67px;
    z-index: 5;
    padding: 10px 0;
    margin-inline: calc(-1 * var(--bs-gutter-x, 1.5rem) * 0.5);
    border-radius: 0;
    border-inline: 0;
    box-shadow: 0 8px 18px rgba(15, 42, 74, 0.06);
    backdrop-filter: blur(14px);
  }

  .sd-profile { display: none; }

  .sd-side .sd-nav {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    padding-inline: 12px;
    scrollbar-width: none;
  }

  .sd-side .sd-nav::-webkit-scrollbar { display: none; }
  .sd-side .sd-nav-link { width: auto; white-space: nowrap; padding: 8px 12px; }
  .sd-side-foot { display: none; }
  .sd-grid-2,
  .sd-grid-2.is-wide-first { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 767.98px) {
  .sd-side { top: 61px; }
  .sd-resume { grid-template-columns: minmax(0, 1fr); padding: 14px; }
  .sd-resume .sd-btn { width: 100%; }
  .sd-panel { padding: 16px; }
  .sd-stat { padding: 14px; }
  .sd-stat strong { font-size: 1.4rem; }

  .sd-request { flex-wrap: wrap; }
  .sd-request-action { width: 100%; padding-inline-start: 58px; }
}

/* =====================================================================
 * Lesson player
 * ===================================================================== */
.learn-page { background: var(--sd-soft); }

.lp-top {
  position: sticky;
  top: 77px;
  z-index: 20;
  background: var(--sd-card);
  border-bottom: 1px solid var(--sd-line);
  backdrop-filter: blur(16px);
}

body:has(.top-bar) .lp-top { top: 114px; }

.lp-top-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: 1600px;
  margin: 0 auto;
  padding: 10px 20px;
}

.lp-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 12px;
  font-size: 0.86rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--sd-ink);
  background: var(--sd-soft);
  border: 1px solid var(--sd-line);
}

.lp-top-title {
  flex: 1;
  min-width: 0;
}

.lp-top-title small {
  display: block;
  font-size: 0.74rem;
  color: var(--sd-muted);
}

.lp-top-title strong {
  display: block;
  overflow: hidden;
  font-size: 0.98rem;
  color: var(--sd-ink);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.lp-top-progress {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 240px;
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--sd-ink);
}

.lp-toggle,
.lp-close { display: none; }

.lp-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 370px;
  gap: 24px;
  max-width: 1600px;
  margin: 0 auto;
  padding: 22px 20px 50px;
}

.lp-stage {
  display: grid;
  gap: 18px;
  align-content: start;
  min-width: 0;
}

.lp-media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 22px;
  background: #050d18;
  box-shadow: 0 24px 50px rgba(15, 42, 74, 0.25);
}

.lp-media iframe,
.lp-media video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  background: #000;
}

.lp-media.is-empty {
  display: grid;
  place-items: center;
  align-content: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.7);
}

.lp-media.is-empty i { font-size: 2.6rem; }

.lp-file {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px;
  border-radius: 22px;
  color: #fff;
  background: var(--sd-grad);
}

.lp-file div { flex: 1; }
.lp-file p { margin: 0; color: rgba(255, 255, 255, 0.85); }
.lp-file .sd-btn { color: #0f2a4a !important; background: #fff; }

.lp-file-icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  font-size: 1.6rem;
  background: rgba(255, 255, 255, 0.2);
}

.lp-lesson-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
}

.lp-lesson-head form { margin: 0; }

.lp-lesson-meta {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  font-size: 0.82rem;
  color: var(--sd-muted);
}

.lp-lesson-meta i { color: #02ad8f; }

.lp-lesson-title {
  margin: 4px 0 0;
  font-size: clamp(1.2rem, 2.4vw, 1.6rem);
  font-weight: 800;
  color: var(--sd-ink);
}

.lp-complete {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 16px;
  font-weight: 800;
  color: var(--sd-ink);
  background: var(--sd-card);
  border: 2px solid rgba(2, 173, 143, 0.4);
  transition: all 0.25s ease;
}

.lp-complete:hover { border-color: #02ad8f; transform: translateY(-2px); }
.lp-complete i { font-size: 1.15rem; color: #02ad8f; }

.lp-complete.is-done {
  color: #fff;
  background: linear-gradient(135deg, #02ad8f, #06b59c);
  border-color: transparent;
  box-shadow: 0 10px 24px rgba(2, 173, 143, 0.35);
}

.lp-complete.is-done i { color: #fff; }
.lp-complete:disabled { opacity: 0.6; }

.lp-content {
  padding: 24px;
  border-radius: 20px;
  line-height: 2;
  color: var(--sd-ink);
  background: var(--sd-card);
  border: 1px solid var(--sd-line);
}

.lp-content img { max-width: 100%; height: auto; border-radius: 12px; }
.lp-content :is(h2, h3, h4) { color: var(--sd-ink); font-weight: 800; }

.lp-content-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.02rem;
}

.lp-attachment {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  border-radius: 16px;
  font-weight: 700;
  text-decoration: none;
  color: var(--sd-ink);
  background: var(--sd-card);
  border: 1px dashed rgba(51, 164, 218, 0.45);
}

.lp-attachment i { font-size: 1.3rem; color: #33a4da; }
.lp-attachment span { margin-inline-start: auto; font-size: 0.84rem; color: #1a83c1; }

.lp-nav {
  display: flex;
  justify-content: space-between;
  gap: 14px;
}

.lp-nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 48%;
  padding: 14px 18px;
  border-radius: 16px;
  text-decoration: none;
  color: var(--sd-ink);
  background: var(--sd-card);
  border: 1px solid var(--sd-line);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.lp-nav-link:hover { border-color: #33a4da; transform: translateY(-2px); }
.lp-nav-link span { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 700; }
.lp-nav-link small { display: block; font-size: 0.74rem; font-weight: 600; color: var(--sd-muted); }

.lp-nav-link.is-next {
  margin-inline-start: auto;
  text-align: end;
  color: #fff;
  background: var(--sd-grad);
  border-color: transparent;
}

.lp-nav-link.is-next small { color: rgba(255, 255, 255, 0.8); }

.lp-banner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  border-radius: 20px;
  color: #fff;
  background: linear-gradient(135deg, #f59e0b, #f97316 55%, #ec4899);
  box-shadow: 0 16px 34px rgba(249, 115, 22, 0.3);
  animation: lp-pop 0.5s ease;
}

.lp-banner div { flex: 1; }
.lp-banner p { margin: 0; color: rgba(255, 255, 255, 0.9); font-size: 0.88rem; }
.lp-banner-icon { font-size: 2rem; }
.lp-banner .sd-btn { color: #c2410c !important; background: #fff; }

@keyframes lp-pop {
  from { opacity: 0; transform: translateY(-8px) scale(0.98); }
  to { opacity: 1; transform: none; }
}

/* Curriculum */
.lp-curriculum {
  position: sticky;
  top: 150px;
  max-height: calc(100vh - 170px);
  overflow-y: auto;
  padding: 8px;
  border-radius: 22px;
  background: var(--sd-card);
  border: 1px solid var(--sd-line);
  box-shadow: var(--sd-shadow);
  scrollbar-width: thin;
}

.lp-curriculum-head {
  position: sticky;
  top: -8px;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin: -8px -8px 6px;
  padding: 14px 16px;
  font-size: 0.84rem;
  color: var(--sd-muted);
  background: var(--sd-card);
  border-bottom: 1px solid var(--sd-line);
}

.lp-curriculum-head strong { color: var(--sd-ink); font-size: 0.95rem; }
.lp-curriculum-head strong i { color: #02ad8f; }

.lp-section { border-radius: 14px; }
.lp-section + .lp-section { margin-top: 4px; }

.lp-section summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px;
  border-radius: 12px;
  font-weight: 800;
  font-size: 0.9rem;
  color: var(--sd-ink);
  list-style: none;
  cursor: pointer;
}

.lp-section summary::-webkit-details-marker { display: none; }
.lp-section summary:hover { background: var(--sd-soft); }

.lp-section-index {
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  border-radius: 9px;
  font-size: 0.78rem;
  color: #1a83c1;
  background: rgba(51, 164, 218, 0.12);
}

.lp-section-title { flex: 1; min-width: 0; }
.lp-section-done { color: #02ad8f; }

.lp-section-count {
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--sd-muted);
}

.lp-section ol {
  margin: 0 0 6px;
  padding: 0;
  list-style: none;
}

.lp-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 12px;
  font-size: 0.87rem;
  text-decoration: none;
  color: var(--sd-ink);
  transition: background 0.2s ease;
}

.lp-item:hover { background: var(--sd-soft); }

.lp-item-state {
  position: relative;
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-size: 0.8rem;
  color: var(--sd-muted);
  border: 2px solid var(--sd-line);
}

.lp-item-state .fa-check { display: none; }
.lp-item.is-done .lp-item-state { color: #fff; background: #02ad8f; border-color: #02ad8f; }
.lp-item.is-done .lp-item-state .fa-check { display: block; }
.lp-item.is-done .lp-item-state i:not(.fa-check) { display: none; }

.lp-item.is-current {
  font-weight: 800;
  color: #1a83c1;
  background: rgba(51, 164, 218, 0.1);
  box-shadow: inset 3px 0 0 #33a4da;
}

[dir="rtl"] .lp-item.is-current { box-shadow: inset -3px 0 0 #33a4da; }

.lp-item-title {
  flex: 1;
  min-width: 0;
  line-height: 1.5;
}

.lp-item-time {
  font-size: 0.74rem;
  color: var(--sd-muted);
}

.lp-scrim { display: none; }

/* Toasts from learn.js */
.learn-page #toast-container {
  position: fixed;
  z-index: 1100;
  bottom: 24px;
  left: 50%;
  display: grid;
  gap: 8px;
  transform: translateX(-50%);
}

.lp-toast {
  padding: 12px 20px;
  border-radius: 14px;
  font-weight: 700;
  color: #fff;
  background: rgba(15, 42, 74, 0.94);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.25);
  animation: lp-pop 0.3s ease;
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.lp-toast.is-leaving { opacity: 0; transform: translateY(8px); }

@media (max-width: 1199.98px) {
  .lp-top { top: 67px; }
  body:has(.top-bar) .lp-top { top: 67px; }
  .lp-body { grid-template-columns: minmax(0, 1fr); }
  .lp-top-progress { width: 160px; }

  .lp-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    border: 0;
    border-radius: 12px;
    font-size: 0.86rem;
    font-weight: 700;
    color: #fff;
    background: var(--sd-grad);
  }

  .lp-close {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border: 0;
    border-radius: 10px;
    color: var(--sd-ink);
    background: var(--sd-soft);
  }

  /* The curriculum becomes a side sheet. */
  .lp-curriculum {
    position: fixed;
    z-index: 1060;
    top: 0;
    bottom: 0;
    inset-inline-start: 0;
    width: min(380px, 88vw);
    max-height: none;
    border-radius: 0;
    transform: translateX(105%);
    transition: transform 0.3s ease;
  }

  .lp.is-curriculum-open .lp-curriculum { transform: none; }

  .lp-scrim {
    position: fixed;
    inset: 0;
    z-index: 1055;
    display: block;
    opacity: 0;
    pointer-events: none;
    background: rgba(5, 13, 24, 0.5);
    transition: opacity 0.3s ease;
  }

  .lp.is-curriculum-open .lp-scrim { opacity: 1; pointer-events: auto; }
}

@media (max-width: 767.98px) {
  .lp-top { top: 61px; }
  body:has(.top-bar) .lp-top { top: 61px; }
  .lp-top-inner { gap: 10px; padding: 8px 12px; flex-wrap: wrap; }
  .lp-back span,
  .lp-toggle span { display: none; }
  .lp-top-progress { order: 5; width: 100%; }
  .lp-body { padding: 12px 12px 30px; gap: 14px; }
  .lp-media { margin-inline: -12px; border-radius: 0; }
  .lp-content { padding: 18px; }
  .lp-complete { width: 100%; justify-content: center; }
  .lp-lesson-head form { width: 100%; }
  .lp-nav { flex-direction: column; }
  .lp-nav > span:empty { display: none; }
  .lp-nav-link,
  .lp-nav-link.is-next { width: 100%; max-width: 100%; margin: 0; }
  .lp-banner { flex-wrap: wrap; }
}

/* ---------- Admin inside a student's account (partials/impersonation-banner) ---------- */
.imp-banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1100;
  height: 54px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 18px;
  color: #fff;
  background: repeating-linear-gradient(135deg, #b45309 0 14px, #c2410c 14px 28px);
  box-shadow: 0 6px 18px rgba(194, 65, 12, 0.35);
}

.imp-banner-icon {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: 10px;
  font-size: 1.1rem;
  background: rgba(0, 0, 0, 0.2);
}

.imp-banner-text {
  flex: 1;
  min-width: 0;
  font-size: 0.9rem;
}

.imp-banner-text small {
  display: block;
  font-size: 0.76rem;
  color: rgba(255, 255, 255, 0.85);
}

.imp-banner form { margin: 0; }

.imp-banner-exit {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: 0;
  border-radius: 10px;
  font-weight: 800;
  font-size: 0.85rem;
  white-space: nowrap;
  color: #c2410c;
  background: #fff;
}

/* The fixed navbar sits below the banner while it is shown. */
body:has(.imp-banner) .mnav,
body:has(.imp-banner):has(.top-bar) .mnav { top: 54px; }
body:has(.imp-banner),
body:has(.imp-banner):has(.top-bar) { padding-top: 131px !important; }

@media (max-width: 1199.98px) {
  body:has(.imp-banner) { padding-top: 121px !important; }
}

@media (max-width: 767.98px) {
  .imp-banner { height: 50px; padding: 8px 12px; }
  .imp-banner-text small { display: none; }
  body:has(.imp-banner) .mnav { top: 50px; }
  body:has(.imp-banner) { padding-top: 111px !important; }
}

/* ---------- Lesson resources (learn.blade.php) ---------- */
.lp-resources {
  padding: 20px;
  border-radius: 20px;
  background: var(--sd-card);
  border: 1px solid var(--sd-line);
}

.lp-resources .lp-content-title { margin: 0 0 14px; color: var(--sd-ink); }
.lp-resources .lp-content-title i { color: #02ad8f; }

.lp-resources-count {
  min-width: 24px;
  padding: 0 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  text-align: center;
  color: #fff;
  background: var(--sd-grad);
}

.lp-resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 10px;
}

.lp-resource {
  --tone: #33a4da;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 14px;
  text-decoration: none;
  color: var(--sd-ink);
  background: var(--sd-soft);
  border: 1px solid var(--sd-line);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.lp-resource.is-file { --tone: #7c3aed; }

.lp-resource:hover {
  transform: translateY(-2px);
  border-color: var(--tone);
}

.lp-resource-icon {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: 12px;
  font-size: 1.3rem;
  color: var(--tone);
  background: color-mix(in srgb, var(--tone) 13%, transparent);
}

.lp-resource-body {
  flex: 1;
  min-width: 0;
  display: grid;
}

.lp-resource-body strong {
  overflow: hidden;
  font-size: 0.9rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.lp-resource-body small { font-size: 0.75rem; color: var(--sd-muted); }
.lp-resource-go { font-size: 1.1rem; color: var(--tone); }