:root {
  --da-bg: #f9fafb;
  --da-surface: #ffffff;
  --da-border-subtle: rgba(15, 23, 42, 0.08);
  --da-text: #111827;
  --da-muted: #6b7280;
  --da-accent: #facc15;
  --da-accent-soft: rgba(250, 204, 21, 0.16);
  --da-danger: #ef4444;
  --da-radius-lg: 18px;
  --da-radius-full: 999px;
  --da-shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.12);
  --da-shadow-card: 0 12px 28px rgba(15, 23, 42, 0.09);
}

/* Reset بسيط لصفحة الكورس دي فقط */
.da-course-page * {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.da-course-page {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  color: var(--da-text);
  background: radial-gradient(circle at top, #eef2ff, #f9fafb);
  line-height: 1.6;
}

.da-course-page a {
  color: inherit;
  text-decoration: none;
}

.da-course-page img {
  max-width: 100%;
  display: block;
}

.da-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 16px 56px;
}

/* ===== Breadcrumb ===== */

.da-breadcrumb {
  font-size: 12px;
  color: var(--da-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 18px;
}

.da-breadcrumb a {
  color: #2563eb;
}

/* ===== Hero ===== */

.da-hero {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1.1fr);
  gap: 28px;
  margin-bottom: 28px;
}

@media (max-width: 900px) {
  .da-hero {
    grid-template-columns: 1fr;
  }
}

.da-hero-main {
  background: var(--da-surface);
  border-radius: var(--da-radius-lg);
  padding: 20px 20px 18px;
  box-shadow: var(--da-shadow-card);
  border: 1px solid var(--da-border-subtle);
}

/* Featured image block */
.da-hero-media {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 14px;
  background: #020617;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.32);
}

.da-hero-media img {
  width: 100%;
  height: 100%;
  max-height: 320px;
  object-fit: cover;
}

.da-hero-media-tag {
  position: absolute;
  left: 12px;
  bottom: 12px;
  padding: 4px 10px;
  font-size: 11px;
  border-radius: var(--da-radius-full);
  background: rgba(15, 23, 42, 0.72);
  color: #f9fafb;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* Label + title + meta */

.da-pill-brand {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 12px;
  border-radius: var(--da-radius-full);
  background: var(--da-accent-soft);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #78350f;
  margin-bottom: 10px;
}

.da-hero-title {
  font-size: clamp(24px, 3vw, 30px);
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 6px;
}

.da-hero-subtitle {
  font-size: 14px;
  color: var(--da-muted);
  margin-bottom: 14px;
}

.da-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  margin-bottom: 4px;
  font-size: 13px;
  color: var(--da-muted);
}

.da-hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.da-badge-rating {
  background: #fef3c7;
  color: #92400e;
  padding: 4px 10px;
  border-radius: var(--da-radius-full);
  font-weight: 600;
}

.da-badge-bestseller {
  background: #dcfce7;
  color: #166534;
  padding: 4px 10px;
  border-radius: var(--da-radius-full);
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
}

/* ===== Buttons ===== */

.da-btn {
  border: none;
  border-radius: var(--da-radius-full);
  padding: 7px 14px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition:
    background-color 0.18s ease,
    box-shadow 0.18s ease,
    transform 0.18s ease;
}

.da-btn-enroll {
  background: linear-gradient(135deg, #facc15, #f97316);
  color: #111827;
  box-shadow: 0 12px 26px rgba(248, 181, 0, 0.5);
  width: 100%;
  margin-top: 8px;
  font-size: 14px;
}

.da-btn-enroll:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 34px rgba(248, 181, 0, 0.65);
}

.da-btn-outline {
  background: #ffffff;
  color: #111827;
  border: 1px solid var(--da-border-subtle);
  width: 100%;
  margin-top: 6px;
  font-size: 14px;
}

.da-btn-outline:hover {
  background: #f9fafb;
}

/* ===== Sidebar ===== */

.da-sidebar {
  position: sticky;
  top: 20px;
  align-self: flex-start;
  background: var(--da-surface);
  border-radius: var(--da-radius-lg);
  padding: 18px 18px 16px;
  box-shadow: var(--da-shadow-soft);
  border: 1px solid var(--da-border-subtle);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

@media (max-width: 900px) {
  .da-sidebar {
    position: static;
    order: -1;
  }
}

.da-price-row {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 6px;
}

.da-price-current {
  font-size: 26px;
  font-weight: 700;
}

.da-price-old {
  font-size: 14px;
  color: var(--da-muted);
  text-decoration: line-through;
}

.da-price-pill {
  font-size: 11px;
  color: #166534;
  background: #dcfce7;
  padding: 3px 9px;
  border-radius: var(--da-radius-full);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.da-price-note {
  font-size: 12px;
  color: var(--da-muted);
  margin-bottom: 6px;
}

.da-sidebar-section {
  border-top: 1px dashed var(--da-border-subtle);
  padding-top: 10px;
}

.da-sidebar-title {
  font-size: 13px;
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #4b5563;
}

.da-list {
  list-style: none;
  font-size: 13px;
  color: var(--da-muted);
  display: grid;
  gap: 4px;
}

.da-list li::before {
  content: "•";
  margin-right: 6px;
  color: #22c55e;
}

.da-sidebar-highlight {
  background: #fffbeb;
  border-radius: 14px;
  padding: 10px 10px 8px;
}

/* ===== Main layout ===== */

.da-main-layout {
  display: grid;
  grid-template-columns: minmax(0, 2.1fr) minmax(0, 1.4fr);
  gap: 28px;
}

@media (max-width: 900px) {
  .da-main-layout {
    grid-template-columns: 1fr;
  }
}

.da-card {
  background: var(--da-surface);
  border-radius: var(--da-radius-lg);
  padding: 18px 18px 20px;
  box-shadow: var(--da-shadow-card);
  border: 1px solid var(--da-border-subtle);
}

/* ===== About section ===== */

.da-section-title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
}

.da-section-title span {
  background: var(--da-accent-soft);
  border-radius: var(--da-radius-full);
  padding: 3px 10px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #78350f;
  margin-left: 6px;
}

.da-about-text {
  font-size: 14px;
  color: #4b5563;
  margin-bottom: 14px;
}

.da-pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
  font-size: 13px;
}

.da-pill-list span {
  padding: 6px 10px;
  border-radius: var(--da-radius-full);
  background: #f3f4f6;
}

.da-about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.da-about-box {
  border-radius: 14px;
  border: 1px solid var(--da-border-subtle);
  padding: 10px 12px;
  font-size: 13px;
  background: #f9fafb;
}

.da-about-box h3 {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
}

.da-about-box ul {
  list-style: none;
  display: grid;
  gap: 4px;
  color: #111827;
}

.da-about-box ul li::before {
  content: "–";
  margin-right: 6px;
  color: #9ca3af;
}

.da-about-muted {
  background: #f3f4f6;
}

/* ===== Curriculum / Accordion ===== */

.da-curriculum-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  font-size: 13px;
  color: var(--da-muted);
}

.da-curriculum-summary {
  font-size: 12px;
}

.da-accordion {
  border-radius: 14px;
  border: 1px solid var(--da-border-subtle);
  overflow: hidden;
  background: #f9fafb;
}

.da-accordion-section {
  border-bottom: 1px solid rgba(148, 163, 184, 0.35);
}

.da-accordion-section:last-child {
  border-bottom: none;
}

.da-accordion-header {
  padding: 10px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  background: #e5e7eb;
  font-size: 13px;
  font-weight: 600;
}

.da-chevron {
  width: 16px;
  height: 16px;
  border-radius: var(--da-radius-full);
  border: 1px solid rgba(15, 23, 42, 0.35);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  background: #f9fafb;
  transition: transform 0.2s ease;
}

.da-accordion-section.da-open .da-chevron {
  transform: rotate(90deg);
}

.da-accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
  background: #f9fafb;
}

.da-accordion-section.da-open .da-accordion-body {
  max-height: 500px;
}

.da-lesson {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  font-size: 13px;
  border-top: 1px solid rgba(148, 163, 184, 0.35);
}

.da-lesson-main {
  display: flex;
  align-items: center;
  gap: 8px;
}

.da-lesson-index {
  width: 22px;
  height: 22px;
  border-radius: var(--da-radius-full);
  background: #e5e7eb;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: #374151;
}

.da-lesson-title {
  font-weight: 500;
}

.da-lesson-submeta {
  font-size: 12px;
  color: var(--da-muted);
}

/* meta (badges + play button) */
.da-lesson-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--da-muted);
}

.da-badge {
  padding: 2px 8px;
  border-radius: var(--da-radius-full);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

.da-badge-free {
  background: #dcfce7;
  color: #166534;
}

.da-badge-locked {
  background: #fee2e2;
  color: #b91c1c;
}

/* زر تشغيل الفيديو للـ FREE lessons */
.da-lesson-play {
  border: none;
  padding: 0;
  margin: 0;
  width: 28px;
  height: 28px;
  border-radius: var(--da-radius-full);
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.16);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 6px 14px rgba(15, 23, 42, 0.18);
  transition:
    background-color 0.18s ease,
    border-color 0.18s ease,
    transform 0.18s ease,
    box-shadow 0.18s ease;
}

.da-lesson-play:hover {
  background-color: var(--da-accent-soft);
  border-color: rgba(250, 204, 21, 0.8);
  transform: translateY(-1px);
  box-shadow: 0 10px 22px rgba(15, 23, 42, 0.22);
}

/* أيقونة الـ Play نفسها (مثلث) */
.da-lesson-play-icon {
  position: relative;
  width: 9px;
  height: 9px;
}

.da-lesson-play-icon::before {
  content: "";
  position: absolute;
  inset: 0;
  width: 0;
  height: 0;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-left: 9px solid #111827;
}

/* ===== More courses loop ===== */

.da-more-courses {
  margin-top: 40px;
}

.da-more-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.da-more-header h2 {
  font-size: 18px;
  font-weight: 700;
}

.da-more-link {
  font-size: 13px;
  color: #2563eb;
}

.da-courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.da-course-card {
  background: #ffffff;
  border-radius: 16px;
  border: 1px solid var(--da-border-subtle);
  box-shadow: var(--da-shadow-card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
}

.da-course-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 32px rgba(15, 23, 42, 0.22);
}

.da-card-thumb {
  position: relative;
  padding-top: 56%;
  background: #111827;
  overflow: hidden;
}

.da-card-thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.da-card-body {
  padding: 10px 12px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.da-card-title {
  font-size: 14px;
  font-weight: 600;
  min-height: 38px;
}

.da-card-meta {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--da-muted);
}

.da-card-price {
  font-size: 14px;
  font-weight: 700;
}

.da-card-price small {
  font-size: 11px;
  color: var(--da-muted);
  text-decoration: line-through;
  margin-left: 4px;
}

.da-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px 10px;
  border-top: 1px solid rgba(148, 163, 184, 0.35);
  font-size: 11px;
  color: var(--da-muted);
}

.da-tag-highlight {
  padding: 3px 9px;
  border-radius: var(--da-radius-full);
  background: var(--da-accent-soft);
  color: #78350f;
  font-weight: 600;
}

/* Small screens tweaks */

@media (max-width: 600px) {
  .da-more-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}

/* ===== Video Modal ===== */

/* لما البوب-أب يفتح، نمنع السكرول في البودي */
body.da-modal-open {
  overflow: hidden;
}

/* الحاوية العامة للبوب-أب */
.da-video-modal {
  position: fixed;
  inset: 0;
  z-index: 999999;
  display: none; /* يتحول لـ flex لما aria-hidden = false */
}

/* الخلفية الغامقة */
.da-video-modal-backdrop {
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at top,
    rgba(15, 23, 42, 0.25),
    rgba(15, 23, 42, 0.85)
  );
}

/* صندوق الفيديو */
.da-video-modal-dialog {
  position: relative;
  z-index: 2;
  width: min(900px, 92vw);
  max-height: 80vh;
  margin: auto;
  background: #020617;
  border-radius: 20px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* جسم الفيديو */
.da-video-modal-body {
  position: relative;
  width: 100%;
  padding-top: min(56.25%, 70vh); /* 16:9 responsive */
  background: #000;
}

.da-video-modal-body video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* زر إغلاق البوب-أب (X) */
.da-video-modal-close {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 3;
  width: 32px;
  height: 32px;
  border-radius: var(--da-radius-full);
  border: 1px solid rgba(248, 250, 252, 0.6);
  background-color: rgba(15, 23, 42, 0.85);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.7);
  transition:
    background-color 0.18s ease,
    transform 0.18s ease,
    box-shadow 0.18s ease;
}

.da-video-modal-close:hover {
  background-color: rgba(15, 23, 42, 0.98);
  transform: translateY(-1px);
  box-shadow: 0 14px 36px rgba(15, 23, 42, 0.9);
}

.da-video-modal-close-icon {
  position: relative;
  width: 15px;
  height: 15px;
}

.da-video-modal-close-icon::before,
.da-video-modal-close-icon::after {
  content: "";
  position: absolute;
  inset: 50%;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background-color: #f9fafb;
  transform-origin: center;
}

.da-video-modal-close-icon::before {
  transform: translate(-50%, -50%) rotate(45deg);
}

.da-video-modal-close-icon::after {
  transform: translate(-50%, -50%) rotate(-45deg);
}

/* حالة الفتح */
.da-video-modal[aria-hidden="false"] {
  display: flex;
  align-items: center;
  justify-content: center;
}