:root {
  --bg: #F3F0E7;
  --surface: #FFFFFF;
  --surface-2: #E9E3D3;
  --text: #22261F;
  --text-dim: #6B7266;
  --primary: #2E7D6B;
  --primary-strong: #245F52;
  --accent: #B98A32;
  --danger: #B24C42;
  --whatsapp: #22A35A;
  --border: #DCD5C2;
  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --radius-pill: 999px;
}

html[data-theme="dark"] {
  --bg: #10140F;
  --surface: #1B221A;
  --surface-2: #232C21;
  --text: #ECEFE8;
  --text-dim: #9AA694;
  --primary: #45A98D;
  --primary-strong: #57C4A5;
  --accent: #D6AC5C;
  --danger: #E07568;
  --whatsapp: #2FBE6E;
  --border: #2E3A2B;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  tap-highlight-color: transparent;
}

html, body {
  height: 100%;
}

body {
  font-family: "Tajawal", sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  user-select: none;
  -webkit-user-select: none;
  transition: background 0.4s ease, color 0.4s ease;
}

input, textarea {
  user-select: text;
  -webkit-user-select: text;
}

button {
  font-family: inherit;
  border: none;
  cursor: pointer;
  background: none;
  color: inherit;
}

.hidden {
  display: none !important;
}

.screen {
  min-height: 100vh;
  min-height: 100dvh;
  width: 100%;
}

.splash {
  position: fixed;
  inset: 0;
  background: #1E4D42;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.splash.fade-out {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.splash-inner {
  text-align: center;
}

.splash-logo {
  font-size: 54px;
  font-weight: 900;
  color: #F3F0E7;
  opacity: 0;
  transform: scale(0.85);
  animation: logoIn 0.7s ease forwards;
}

@keyframes logoIn {
  to { opacity: 1; transform: scale(1); }
}

.splash-tag {
  margin-top: 14px;
  color: #E4E9D6;
  font-size: 15px;
  opacity: 0;
  animation: fadeIn 0.8s ease forwards 0.5s;
}

@keyframes fadeIn {
  to { opacity: 1; }
}

.auth-screen, .app {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.app {
  display: block;
  align-items: unset;
  justify-content: unset;
  padding: 0;
}

.auth-card {
  width: 100%;
  max-width: 380px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  animation: cardIn 0.5s ease;
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.auth-logo {
  text-align: center;
  font-size: 30px;
  font-weight: 800;
  color: var(--primary);
}

.auth-sub {
  text-align: center;
  color: var(--text-dim);
  font-size: 13px;
  margin-top: 6px;
  margin-bottom: 22px;
}

.auth-tabs {
  display: flex;
  background: var(--surface-2);
  border-radius: var(--radius-pill);
  padding: 4px;
  margin-bottom: 20px;
}

.auth-tab {
  flex: 1;
  padding: 10px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 14px;
  color: var(--text-dim);
  transition: background 0.3s ease, color 0.3s ease;
}

.auth-tab.active {
  background: var(--primary);
  color: #fff;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.auth-form input {
  width: 100%;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  outline: none;
  transition: border 0.25s ease;
}

.auth-form input:focus {
  border-color: var(--primary);
}

.btn-primary {
  padding: 14px;
  border-radius: var(--radius-md);
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  font-size: 15px;
  transition: transform 0.15s ease, background 0.25s ease;
}

.btn-primary:active {
  transform: scale(0.97);
}

.btn-ghost {
  margin-top: 16px;
  width: 100%;
  padding: 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-weight: 600;
  font-size: 13px;
  transition: border 0.25s ease, color 0.25s ease;
}

.btn-ghost:active {
  transform: scale(0.98);
}

.auth-error {
  color: var(--danger);
  font-size: 13px;
  min-height: 16px;
  text-align: center;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.brand {
  font-size: 22px;
  font-weight: 900;
  color: var(--primary);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.live-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--surface-2);
  border-radius: var(--radius-pill);
  padding: 7px 12px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-dim);
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  animation: pulse 1.6s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.5); opacity: 0.5; }
}

.icon-btn, .avatar-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  transition: transform 0.2s ease;
}

.icon-btn:active, .avatar-btn:active {
  transform: scale(0.9);
}

.avatar-btn {
  background: var(--primary);
  color: #fff;
  font-weight: 800;
}

.btn-small {
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-size: 13px;
  transition: transform 0.2s ease;
}

.btn-small:active {
  transform: scale(0.95);
}

.content {
  max-width: 1080px;
  margin: 0 auto;
  padding: 20px 20px 60px;
}

.ad-slot {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 7;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface-2);
  border: 1px solid var(--border);
  margin-bottom: 26px;
}

.ad-track {
  position: relative;
  width: 100%;
  height: 100%;
}

.ad-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.6s ease;
}

.ad-slide.active {
  opacity: 1;
  visibility: visible;
}

.ad-slide img, .ad-slide video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.ad-slide.audio-slide {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 20px;
  background: var(--surface-2);
}

.ad-slide.audio-slide span {
  font-weight: 800;
  font-size: 14px;
  color: var(--text);
}

.ad-dots {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
}

.ad-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.55);
  transition: transform 0.2s ease, background 0.2s ease;
}

.ad-dot.active {
  background: #fff;
  transform: scale(1.4);
}

.hero {
  margin-bottom: 18px;
  animation: fadeUp 0.6s ease;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero h1 {
  font-size: 26px;
  font-weight: 900;
  margin-bottom: 6px;
}

.hero p {
  color: var(--text-dim);
  font-size: 14px;
}

.invite-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  margin-bottom: 22px;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.invite-cta:active {
  transform: scale(0.98);
}

.invite-cta-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.invite-cta-text strong {
  font-size: 16px;
  font-weight: 800;
}

.invite-cta-text span {
  font-size: 12px;
  opacity: 0.85;
}

.invite-cta-icon {
  font-size: 22px;
}

.chips {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 14px;
  margin-bottom: 6px;
}

.chip {
  flex-shrink: 0;
  padding: 9px 18px;
  border-radius: var(--radius-pill);
  background: var(--surface-2);
  color: var(--text-dim);
  font-size: 13px;
  font-weight: 700;
  border: 1px solid transparent;
  transition: background 0.25s ease, color 0.25s ease;
}

.chip.active {
  background: var(--primary);
  color: #fff;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 18px;
}

.course-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  animation: fadeUp 0.5s ease backwards;
  transition: transform 0.25s ease, border 0.25s ease;
}

.course-card:active {
  transform: scale(0.97);
}

.course-thumb {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
  background: var(--surface-2);
}

.course-body {
  padding: 14px 16px 18px;
}

.course-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 800;
  color: var(--primary);
  background: var(--surface-2);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 8px;
}

.course-title {
  font-size: 16px;
  font-weight: 800;
  margin-bottom: 6px;
}

.course-desc {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.6;
}

.course-meta {
  margin-top: 10px;
  font-size: 12px;
  color: var(--accent);
  font-weight: 700;
}

.footer {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  justify-content: center;
  padding: 30px 20px 50px;
  border-top: 1px solid var(--border);
}

.link-btn {
  font-size: 13px;
  color: var(--text-dim);
  font-weight: 700;
  transition: color 0.2s ease;
}

.link-btn:active {
  color: var(--primary);
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(16, 20, 15, 0.55);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 50;
  animation: fadeIn 0.25s ease;
}

.modal-card {
  width: 100%;
  max-width: 520px;
  max-height: 88vh;
  overflow-y: auto;
  background: var(--surface);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  padding: 26px 22px 34px;
  position: relative;
  animation: slideUp 0.35s ease;
}

@media (min-width: 620px) {
  .modal {
    align-items: center;
  }
  .modal-card {
    border-radius: var(--radius-lg);
  }
}

@keyframes slideUp {
  from { transform: translateY(40px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.modal-close {
  position: absolute;
  top: 16px;
  left: 16px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--surface-2);
  font-size: 15px;
}

.modal-card h2 {
  font-size: 19px;
  font-weight: 800;
  margin-bottom: 16px;
  padding-left: 40px;
}

.modal-desc {
  color: var(--text-dim);
  font-size: 13px;
  line-height: 1.7;
  margin-bottom: 18px;
}

.video-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.video-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  border-radius: var(--radius-md);
  background: var(--surface-2);
  cursor: pointer;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.video-item:active {
  transform: scale(0.97);
}

.video-item img {
  width: 84px;
  height: 52px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.video-item span {
  font-size: 14px;
  font-weight: 700;
}

.video-item.locked {
  opacity: 0.6;
}

.lock-badge {
  margin-right: auto;
  font-size: 11px !important;
  font-weight: 800 !important;
  color: var(--accent);
  background: var(--surface);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  flex-shrink: 0;
}

.player-card {
  max-width: 760px;
}

.player-frame {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #000;
}

.player-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.profile-name {
  font-size: 18px;
  font-weight: 800;
  padding-left: 40px;
}

.profile-email {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 20px;
}

.invite-box {
  background: var(--surface-2);
  border-radius: var(--radius-md);
  padding: 18px;
  margin-bottom: 20px;
}

.qr-wrap {
  display: flex;
  justify-content: center;
  padding: 14px;
  background: #fff;
  border-radius: var(--radius-md);
  margin-bottom: 14px;
}

.invite-row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.invite-row input {
  flex: 1;
  padding: 11px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 12px;
  font-family: inherit;
}

.btn-whatsapp {
  width: 100%;
  padding: 13px;
  border-radius: var(--radius-md);
  background: var(--whatsapp);
  color: #fff;
  font-weight: 800;
  font-size: 14px;
  transition: transform 0.2s ease;
}

.btn-whatsapp:active {
  transform: scale(0.97);
}

.btn-danger {
  width: 100%;
  padding: 13px;
  border-radius: var(--radius-md);
  background: var(--danger);
  color: #fff;
  font-weight: 800;
  transition: transform 0.2s ease;
}

.btn-danger:active {
  transform: scale(0.97);
}

.policy-text {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.policy-text p {
  font-size: 13px;
  line-height: 1.9;
  color: var(--text-dim);
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 22px;
  }
  .splash-logo {
    font-size: 42px;
  }
  .course-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .course-body {
    padding: 10px 12px 14px;
  }
  .course-title {
    font-size: 14px;
  }
  .course-desc {
    display: none;
  }
  .ad-slot {
    aspect-ratio: 16 / 9;
  }
}

@media (orientation: landscape) and (max-height: 480px) {
  .topbar {
    padding: 10px 20px;
  }
  .content {
    padding: 14px 20px 40px;
  }
  .ad-slot {
    aspect-ratio: 21 / 6;
    margin-bottom: 14px;
  }
  .hero {
    margin-bottom: 12px;
  }
  .modal-card {
    max-height: 94vh;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}