:root {
  --color-primary: #1d2d47;
  --color-secondary: #25b2c9;
  --color-accent: #156a90;
  --color-deep: #212f72;
  --color-bg: #f4f7fb;
  --color-surface: #ffffff;
  --color-text: #1a2333;
  --color-muted: #5c6b7f;
  --font-sans: "DM Sans", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --radius: 12px;
  --shadow: 0 18px 45px rgba(29, 45, 71, 0.12);
  --shadow-sm: 0 8px 24px rgba(29, 45, 71, 0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

.container {
  width: min(1120px, 92vw);
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(29, 45, 71, 0.08);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--color-primary);
  text-decoration: none;
}
.brand:hover {
  text-decoration: none;
  color: var(--color-deep);
}
.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-secondary), var(--color-deep));
  box-shadow: var(--shadow-sm);
}

.nav-main {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem;
}
.nav-main a {
  color: var(--color-muted);
  font-weight: 500;
  font-size: 0.95rem;
}
.nav-main a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  font-family: inherit;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn:active {
  transform: translateY(1px);
}
.btn-primary {
  background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
  color: #fff;
  box-shadow: 0 10px 28px rgba(37, 178, 201, 0.35);
}
.btn-primary:hover {
  filter: brightness(1.03);
  text-decoration: none;
  color: #fff;
}
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid rgba(29, 45, 71, 0.15);
}
.btn-outline:hover {
  border-color: var(--color-secondary);
  color: var(--color-deep);
  text-decoration: none;
}
.btn-ghost {
  background: rgba(29, 45, 71, 0.06);
  color: var(--color-primary);
}
.btn-sm {
  padding: 0.45rem 0.9rem;
  font-size: 0.85rem;
}

.hero {
  position: relative;
  overflow: hidden;
  background: radial-gradient(
      1200px 500px at 10% -10%,
      rgba(37, 178, 201, 0.25),
      transparent
    ),
    radial-gradient(900px 400px at 90% 0%, rgba(33, 47, 114, 0.2), transparent),
    linear-gradient(180deg, #0f1a2e 0%, var(--color-primary) 45%, #152038 100%);
  color: #e8f4ff;
  padding: clamp(3rem, 8vw, 5.5rem) 0 clamp(4rem, 10vw, 6rem);
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.6;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.5rem;
  align-items: center;
}
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }
}
.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.1rem);
  line-height: 1.1;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}
.hero p.lead {
  font-size: 1.1rem;
  color: rgba(232, 244, 255, 0.85);
  max-width: 34rem;
  margin: 0 0 1.75rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.hero-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 1.5rem;
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
}
.hero-stat {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1rem;
  font-size: 0.9rem;
  color: rgba(232, 244, 255, 0.75);
}
.hero-stat strong {
  color: #fff;
  font-size: 1.25rem;
  display: block;
}

.section {
  padding: clamp(3rem, 6vw, 4.5rem) 0;
}
.section-title {
  font-size: 1.75rem;
  margin: 0 0 0.5rem;
  color: var(--color-primary);
}
.section-sub {
  color: var(--color-muted);
  margin: 0 0 2rem;
  max-width: 40rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}

.course-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(29, 45, 71, 0.06);
  display: flex;
  flex-direction: column;
}
.course-card__media {
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, var(--color-deep), var(--color-accent));
  position: relative;
}
.course-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.course-card__body {
  padding: 1.15rem 1.25rem 1.35rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.course-card__meta {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-secondary);
  font-weight: 600;
}
.course-card h3 {
  margin: 0;
  font-size: 1.1rem;
  color: var(--color-primary);
}
.course-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--color-muted);
  flex: 1;
}

.pill {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(37, 178, 201, 0.12);
  color: var(--color-accent);
}

.site-footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.78);
  padding: 2.5rem 0;
  margin-top: 3rem;
}
.site-footer a {
  color: #fff;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}

.form-card {
  max-width: 480px;
  margin: 2rem auto;
  background: var(--color-surface);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(29, 45, 71, 0.06);
}
.form-row {
  margin-bottom: 1rem;
}
.form-row label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
  color: var(--color-primary);
}
.form-row input,
.form-row textarea,
.form-row select {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  border: 1px solid rgba(29, 45, 71, 0.15);
  font-family: inherit;
}
.errorlist {
  color: #b42318;
  list-style: none;
  padding: 0;
  margin: 0.25rem 0 0;
  font-size: 0.85rem;
}

.messages {
  list-style: none;
  padding: 0;
  margin: 1rem auto;
  max-width: 1120px;
  width: 92vw;
}
.messages li {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  margin-bottom: 0.5rem;
}
.messages .success {
  background: #e6f7ed;
  color: #0f5132;
}
.messages .error {
  background: #fde8e8;
  color: #842029;
}

/* Staff layout */
.staff-shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}
@media (max-width: 960px) {
  .staff-shell {
    grid-template-columns: 1fr;
  }
}
.staff-sidebar {
  background: linear-gradient(180deg, var(--color-primary), #121b2e);
  color: rgba(255, 255, 255, 0.85);
  padding: 1.5rem 1rem;
}
.staff-sidebar .brand {
  color: #fff;
  margin-bottom: 1.5rem;
}
.staff-nav a {
  display: block;
  padding: 0.55rem 0.75rem;
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.92rem;
  margin-bottom: 0.15rem;
}
.staff-nav a:hover,
.staff-nav a.active {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  text-decoration: none;
}

.staff-logout-form {
  margin: 0;
}
.staff-logout-btn {
  display: block;
  width: 100%;
  margin: 0 0 0.15rem;
  padding: 0.55rem 0.75rem;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: rgba(255, 255, 255, 0.78);
  font: inherit;
  font-size: 0.92rem;
  text-align: left;
  cursor: pointer;
}
.staff-logout-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}
.staff-main {
  background: var(--color-bg);
  padding: 1.5rem clamp(1rem, 3vw, 2rem);
}
.staff-topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.stat-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(29, 45, 71, 0.06);
}
.stat-card span {
  display: block;
  font-size: 0.8rem;
  color: var(--color-muted);
}
.stat-card strong {
  font-size: 1.45rem;
  color: var(--color-primary);
}

.table-wrap {
  overflow-x: auto;
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(29, 45, 71, 0.06);
}
table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
table.data-table th,
table.data-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(29, 45, 71, 0.08);
}
table.data-table th {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-muted);
  background: rgba(29, 45, 71, 0.03);
}

.tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}
.tabs a,
.tabs button {
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  border: 1px solid rgba(29, 45, 71, 0.12);
  background: #fff;
  cursor: pointer;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--color-muted);
}
.tabs a.active,
.tabs button.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.player-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 1.25rem;
}
@media (max-width: 960px) {
  .player-layout {
    grid-template-columns: 1fr;
  }
}
.video-shell {
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16/9;
}
.video-shell iframe,
.video-shell video {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.feature-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}
.feature-box {
  background: var(--color-surface);
  padding: 1.35rem;
  border-radius: var(--radius);
  border: 1px solid rgba(29, 45, 71, 0.06);
  box-shadow: var(--shadow-sm);
}
.feature-box h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  color: var(--color-primary);
}
.feature-box p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.92rem;
}

/* —— Learner / user panel (professional app shell) —— */
.learner-shell {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  min-height: calc(100vh - 120px);
  align-items: stretch;
  width: min(1280px, 100%);
  margin: 0 auto;
  background: var(--color-bg);
  border-radius: 0;
  box-shadow: none;
}

@media (max-width: 960px) {
  .learner-shell {
    grid-template-columns: 1fr;
    min-height: auto;
  }
  .learner-sidebar {
    position: relative;
    border-radius: 0 0 var(--radius) var(--radius);
  }
}

.learner-sidebar {
  background: linear-gradient(175deg, #152a45 0%, var(--color-primary) 42%, #0f1f38 100%);
  color: rgba(255, 255, 255, 0.92);
  padding: 1.35rem 1rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
}

.learner-sidebar__top {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.learner-sidebar__logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.02rem;
  color: #fff;
  text-decoration: none;
}
.learner-sidebar__logo:hover {
  color: rgba(255, 255, 255, 0.92);
  text-decoration: none;
}

.learner-sidebar__mark {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--color-secondary), var(--color-deep));
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.learner-sidebar__user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0.85rem;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
}

.learner-sidebar__avatar {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(37, 178, 201, 0.5), rgba(33, 47, 114, 0.8));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  color: #fff;
}

.learner-sidebar__name {
  margin: 0;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.25;
  color: #fff;
}

.learner-sidebar__email {
  margin: 0.15rem 0 0;
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.55);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 180px;
}

.learner-nav__section {
  margin: 0 0 0.4rem 0.35rem;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.38);
}

.learner-nav {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  flex: 1;
}

.learner-nav__item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.65rem 0.85rem;
  border-radius: 10px;
  color: rgba(255, 255, 255, 0.78);
  font-weight: 500;
  font-size: 0.92rem;
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
}
.learner-nav__item:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  text-decoration: none;
}
.learner-nav__item.is-active {
  background: rgba(37, 178, 201, 0.22);
  color: #fff;
  box-shadow: inset 0 0 0 1px rgba(37, 178, 201, 0.35);
}

.learner-nav__ico {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  opacity: 0.9;
}

.learner-sidebar__context {
  padding: 0.85rem 0.75rem;
  margin-top: 0.25rem;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.learner-sidebar__context-label {
  display: block;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.45);
  margin-bottom: 0.35rem;
}
.learner-sidebar__context-title {
  margin: 0;
  font-size: 0.88rem;
  font-weight: 600;
  line-height: 1.35;
  color: #fff;
}

.learner-sidebar__bottom {
  margin-top: auto;
  padding-top: 0.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.learner-sidebar__link-out {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.86rem;
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
}
.learner-sidebar__link-out:hover {
  color: #fff;
  text-decoration: none;
}

.learner-main {
  padding: clamp(1.25rem, 3vw, 2rem) clamp(1rem, 3vw, 2.25rem) 2.5rem;
  background: linear-gradient(180deg, #eef2f8 0%, var(--color-bg) 28%);
  min-width: 0;
}

.learner-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.82rem;
  color: var(--color-muted);
  margin: 0 0 1.25rem;
}
.learner-breadcrumb a {
  color: var(--color-accent);
  font-weight: 500;
  text-decoration: none;
}
.learner-breadcrumb a:hover {
  text-decoration: underline;
}
.learner-breadcrumb__sep {
  opacity: 0.45;
  user-select: none;
}

.learner-page-head {
  margin-bottom: 1.75rem;
}
.learner-page-head h1 {
  margin: 0 0 0.35rem;
  font-size: clamp(1.35rem, 2.5vw, 1.75rem);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}
.learner-page-head p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.95rem;
  max-width: 42rem;
}

.learner-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.learner-stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.learner-stat {
  background: var(--color-surface);
  border: 1px solid rgba(29, 45, 71, 0.07);
  border-radius: 12px;
  padding: 1rem 1.1rem;
  box-shadow: var(--shadow-sm);
}
.learner-stat span {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-muted);
}
.learner-stat strong {
  display: block;
  margin-top: 0.25rem;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary);
}

.learner-course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
  gap: 1.15rem;
}

.learner-course-card {
  background: var(--color-surface);
  border-radius: 14px;
  border: 1px solid rgba(29, 45, 71, 0.08);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.learner-course-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.learner-course-card__thumb {
  height: 112px;
  background: linear-gradient(135deg, var(--color-deep), var(--color-accent));
  position: relative;
}
.learner-course-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.learner-course-card__body {
  padding: 1.15rem 1.25rem 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.learner-course-card__meta {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-secondary);
}

.learner-course-card__title {
  margin: 0;
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.3;
}

.learner-progress {
  margin-top: 0.15rem;
}
.learner-progress__labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--color-muted);
  margin-bottom: 0.35rem;
}
.learner-progress__labels strong {
  color: var(--color-primary);
  font-weight: 600;
}
.learner-progress__track {
  height: 8px;
  background: rgba(29, 45, 71, 0.08);
  border-radius: 99px;
  overflow: hidden;
}
.learner-progress__fill {
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--color-secondary), var(--color-accent));
  transition: width 0.35s ease;
}

.learner-course-card__actions {
  margin-top: auto;
  padding-top: 0.5rem;
}

.learner-empty {
  text-align: center;
  padding: 3rem 1.5rem;
  background: var(--color-surface);
  border-radius: 16px;
  border: 2px dashed rgba(29, 45, 71, 0.12);
  max-width: 480px;
  margin: 0 auto;
}
.learner-empty h2 {
  margin: 0 0 0.5rem;
  font-size: 1.2rem;
  color: var(--color-primary);
}
.learner-empty p {
  margin: 0 0 1.25rem;
  color: var(--color-muted);
  font-size: 0.95rem;
}

/* Course player */
.learner-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.35rem;
  padding: 0.35rem;
  background: rgba(29, 45, 71, 0.06);
  border-radius: 12px;
  width: fit-content;
  max-width: 100%;
}
.learner-tabs a {
  padding: 0.5rem 1rem;
  border-radius: 9px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-muted);
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
}
.learner-tabs a:hover {
  color: var(--color-primary);
  background: rgba(255, 255, 255, 0.7);
  text-decoration: none;
}
.learner-tabs a.is-active {
  background: var(--color-surface);
  color: var(--color-primary);
  box-shadow: 0 2px 12px rgba(29, 45, 71, 0.1);
}

.learner-player-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 1.35rem;
  align-items: start;
}
@media (max-width: 1024px) {
  .learner-player-grid {
    grid-template-columns: 1fr;
  }
}

.learner-video-card {
  background: var(--color-surface);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(29, 45, 71, 0.08);
  box-shadow: var(--shadow-sm);
}

.learner-video-card .video-shell {
  border-radius: 0;
  aspect-ratio: 16 / 9;
}

.learner-video-meta {
  padding: 1.1rem 1.25rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}
.learner-video-meta h2 {
  margin: 0;
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.35;
  max-width: 36rem;
}

.learner-btn-done {
  flex-shrink: 0;
}

.learner-pill-ok {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  background: rgba(22, 163, 74, 0.12);
  color: #166534;
}

.learner-curriculum {
  background: var(--color-surface);
  border-radius: 16px;
  border: 1px solid rgba(29, 45, 71, 0.08);
  box-shadow: var(--shadow-sm);
  padding: 1.15rem 1.1rem 1.25rem;
  max-height: min(70vh, 640px);
  overflow-y: auto;
}
.learner-curriculum h3 {
  margin: 0 0 1rem;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-muted);
}

.learner-mod {
  margin-bottom: 1.1rem;
}
.learner-mod:last-child {
  margin-bottom: 0;
}
.learner-mod__title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 0 0.5rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid rgba(29, 45, 71, 0.08);
}

.learner-lesson {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin-bottom: 0.2rem;
}
.learner-lesson:last-child {
  margin-bottom: 0;
}
.learner-lesson a {
  flex: 1;
  padding: 0.45rem 0.55rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  line-height: 1.35;
}
.learner-lesson a:hover {
  background: rgba(29, 45, 71, 0.05);
  color: var(--color-primary);
  text-decoration: none;
}
.learner-lesson.is-current a {
  background: linear-gradient(135deg, rgba(37, 178, 201, 0.12), rgba(33, 47, 114, 0.08));
  color: var(--color-primary);
  font-weight: 700;
  box-shadow: inset 0 0 0 1px rgba(37, 178, 201, 0.25);
}
.learner-lesson__check {
  flex-shrink: 0;
  width: 1.25rem;
  text-align: center;
  font-size: 0.85rem;
  color: #16a34a;
  padding-top: 0.5rem;
}

.learner-panel-hint {
  margin-top: 1rem;
  padding: 0.75rem 0.9rem;
  font-size: 0.86rem;
  color: var(--color-muted);
  background: rgba(29, 45, 71, 0.04);
  border-radius: 10px;
}

.learner-notes-panel {
  background: var(--color-surface);
  border-radius: 16px;
  border: 1px solid rgba(29, 45, 71, 0.08);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem 1.35rem;
}
.learner-notes-panel h2 {
  margin: 0 0 1rem;
  font-size: 1.15rem;
  color: var(--color-primary);
}
.learner-file-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.learner-file-list li {
  border-bottom: 1px solid rgba(29, 45, 71, 0.06);
}
.learner-file-list li:last-child {
  border-bottom: none;
}
.learner-file-list a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 0.25rem;
  font-weight: 500;
  color: var(--color-primary);
  text-decoration: none;
}
.learner-file-list a:hover {
  color: var(--color-accent);
  text-decoration: none;
}
.learner-file-list__icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(37, 178, 201, 0.12);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.learner-file-list__icon svg {
  display: block;
}

/* Quiz */
.learner-quiz-head {
  margin-bottom: 1.5rem;
}
.learner-quiz-rules {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
}
.learner-quiz-rule {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: var(--color-surface);
  border: 1px solid rgba(29, 45, 71, 0.1);
  color: var(--color-muted);
}

.learner-q-card {
  background: var(--color-surface);
  border-radius: 14px;
  border: 1px solid rgba(29, 45, 71, 0.08);
  box-shadow: var(--shadow-sm);
  padding: 1.25rem 1.35rem;
  margin-bottom: 1rem;
}
.learner-q-card legend {
  padding: 0;
  margin: 0 0 1rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.45;
}

.learner-choice {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  padding: 0.65rem 0.75rem;
  margin-bottom: 0.35rem;
  border-radius: 10px;
  border: 1px solid rgba(29, 45, 71, 0.08);
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.learner-choice:hover {
  border-color: rgba(37, 178, 201, 0.45);
  background: rgba(37, 178, 201, 0.04);
}
.learner-choice input {
  margin-top: 0.2rem;
  accent-color: var(--color-accent);
}
.learner-choice span {
  font-size: 0.92rem;
  line-height: 1.45;
  color: var(--color-text);
}

/* Certificate */
.learner-cert {
  background: var(--color-surface);
  border-radius: 20px;
  border: 1px solid rgba(29, 45, 71, 0.1);
  box-shadow: var(--shadow);
  padding: clamp(1.75rem, 4vw, 2.75rem);
  text-align: center;
  position: relative;
  overflow: hidden;
  max-width: 560px;
  margin: 0 auto;
}
.learner-cert::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-secondary), var(--color-deep), var(--color-accent));
}
.learner-cert__brand {
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-secondary);
  margin: 0 0 0.5rem;
}
.learner-cert h1 {
  margin: 0 0 1.25rem;
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  color: var(--color-primary);
  font-weight: 800;
}
.learner-cert__name {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0.5rem 0;
}
.learner-cert__course {
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--color-accent);
  margin: 0.25rem 0 1rem;
}
.learner-cert__meta {
  font-size: 0.88rem;
  color: var(--color-muted);
  margin: 0 0 1.5rem;
}

/* Profile in learner shell */
.learner-profile-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
  gap: 1.35rem;
  align-items: start;
}
@media (max-width: 900px) {
  .learner-profile-grid {
    grid-template-columns: 1fr;
  }
}
.learner-profile-card {
  background: var(--color-surface);
  border-radius: 16px;
  border: 1px solid rgba(29, 45, 71, 0.08);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem 1.4rem;
}
.learner-profile-card h2 {
  margin: 0 0 1rem;
  font-size: 1.05rem;
  color: var(--color-primary);
}
.learner-profile-card .form-row input[type="file"] {
  padding: 0.4rem 0;
}
.learner-profile-aside {
  background: linear-gradient(165deg, rgba(37, 178, 201, 0.1), rgba(33, 47, 114, 0.08));
  border-radius: 16px;
  border: 1px solid rgba(29, 45, 71, 0.08);
  padding: 1.25rem 1.2rem;
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.55;
}
.learner-profile-aside strong {
  color: var(--color-primary);
  display: block;
  margin-bottom: 0.35rem;
}