/* ============================================================
   Learn with Coffee — Design System CSS
   Signature element: the "coffee ring" — a soft espresso stain
   used as a divider, loading indicator, and certificate stamp.
   ============================================================ */

:root {
  --espresso: #1E120B;
  --espresso-light: #2C1A10;
  --mocha: #8D5B4C;
  --latte: #FAF7F2;
  --caramel: #D4A373;
  --caramel-dark: #B5834F;
  --cinnamon: #B5651D;
}

* { scroll-behavior: smooth; }

::selection { background: var(--caramel); color: var(--espresso); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--latte); }
::-webkit-scrollbar-thumb { background: var(--mocha); border-radius: 8px; border: 2px solid var(--latte); }

/* ---------- Nav links ---------- */
.nav-link {
  color: #EDE3D8;
  padding: 0.5rem 0.9rem;
  border-radius: 0.6rem;
  font-weight: 500;
  transition: background .18s ease, color .18s ease;
}
.nav-link:hover { background: rgba(212,163,115,0.14); color: var(--caramel); }
.nav-link.active { color: var(--caramel); background: rgba(212,163,115,0.12); }

.mobile-link {
  display: block;
  color: #EDE3D8;
  padding: 0.6rem 0.4rem;
  border-radius: 0.5rem;
  font-weight: 500;
}
.mobile-link:hover { background: rgba(212,163,115,0.12); color: var(--caramel); }

/* ---------- Coffee ring signature ---------- */
.coffee-ring { position: relative; }
.coffee-ring::after {
  content: '';
  position: absolute;
  inset: -6px;
  border: 1.5px solid rgba(212,163,115,0.35);
  border-radius: 999px;
  pointer-events: none;
}

.ring-divider {
  position: relative;
  height: 64px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.ring-divider::before {
  content: '';
  width: 42px; height: 42px;
  border: 2.5px solid rgba(141,91,76,0.25);
  border-radius: 999px;
}
.ring-divider::after {
  content: '';
  position: absolute;
  width: 26px; height: 26px;
  border: 2px solid rgba(212,163,115,0.4);
  border-radius: 999px;
}

/* ---------- Glassmorphism cards ---------- */
.glass-card {
  background: rgba(255,255,255,0.55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255,255,255,0.4);
  box-shadow: 0 8px 32px 0 rgba(30,18,11,0.12);
}
.glass-dark {
  background: rgba(30,18,11,0.55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(212,163,115,0.15);
}

/* ---------- Buttons ---------- */
.btn-primary {
  background: linear-gradient(135deg, var(--caramel), var(--caramel-dark));
  color: var(--espresso);
  font-weight: 600;
  padding: 0.7rem 1.4rem;
  border-radius: 0.75rem;
  transition: transform .15s ease, box-shadow .15s ease, filter .15s ease;
  box-shadow: 0 6px 18px -6px rgba(181,131,79,0.55);
}
.btn-primary:hover { transform: translateY(-1px); filter: brightness(1.05); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; transform: none; }

.btn-outline {
  border: 1.5px solid var(--mocha);
  color: var(--espresso);
  font-weight: 600;
  padding: 0.65rem 1.35rem;
  border-radius: 0.75rem;
  transition: background .15s ease, color .15s ease;
}
.btn-outline:hover { background: var(--mocha); color: var(--latte); }

.btn-dark {
  background: var(--espresso);
  color: var(--latte);
  font-weight: 600;
  padding: 0.7rem 1.4rem;
  border-radius: 0.75rem;
  transition: background .15s ease;
}
.btn-dark:hover { background: var(--espresso-light); }

.btn-danger {
  background: #8E3B3B; color: #fff; font-weight: 600;
  padding: 0.5rem 1rem; border-radius: 0.6rem;
  transition: filter .15s ease;
}
.btn-danger:hover { filter: brightness(1.1); }

.input-field {
  width: 100%;
  background: #fff;
  border: 1.5px solid #E4D9CB;
  border-radius: 0.7rem;
  padding: 0.65rem 0.9rem;
  font-size: 0.95rem;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.input-field:focus {
  outline: none;
  border-color: var(--caramel);
  box-shadow: 0 0 0 3px rgba(212,163,115,0.25);
}
.input-field:focus-visible { outline: 2px solid var(--caramel); outline-offset: 1px; }

label.field-label { font-size: 0.82rem; font-weight: 600; color: var(--espresso); margin-bottom: 0.3rem; display: block; }

/* ---------- Course card ---------- */
.course-card {
  background: #fff;
  border-radius: 1.1rem;
  overflow: hidden;
  border: 1px solid #EEE3D6;
  transition: transform .2s ease, box-shadow .2s ease;
}
.course-card:hover { transform: translateY(-4px); box-shadow: 0 16px 40px -14px rgba(30,18,11,0.28); }

/* ---------- Progress ---------- */
.progress-track { background: #EDE0D0; border-radius: 999px; height: 8px; overflow: hidden; }
.progress-fill { background: linear-gradient(90deg, var(--caramel), var(--cinnamon)); height: 100%; border-radius: 999px; transition: width .4s ease; }

/* ---------- Lesson lock states ---------- */
.lesson-item { transition: background .15s ease; }
.lesson-item:hover { background: rgba(212,163,115,0.08); }
.lesson-locked { opacity: 0.55; cursor: not-allowed; }

/* ---------- Fade/slide transitions for router views ---------- */
.view-enter { animation: viewFade .35s ease both; }
@keyframes viewFade {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .view-enter { animation: none; }
  .course-card:hover { transform: none; }
}

/* ---------- Modal ---------- */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(30,18,11,0.6);
  backdrop-filter: blur(2px);
  display: flex; align-items: center; justify-content: center;
  z-index: 200; padding: 1rem;
  animation: fadeIn .2s ease both;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal-box {
  background: var(--latte);
  border-radius: 1.2rem;
  max-width: 32rem; width: 100%;
  max-height: 90vh; overflow-y: auto;
  box-shadow: 0 24px 60px -12px rgba(0,0,0,0.4);
  animation: modalPop .25s cubic-bezier(.2,.8,.3,1.2) both;
}
@keyframes modalPop { from { opacity: 0; transform: scale(.95) translateY(6px);} to { opacity: 1; transform: scale(1) translateY(0);} }

/* ---------- Toasts ---------- */
.toast { border-radius: 0.85rem; padding: 0.85rem 1rem; box-shadow: 0 10px 30px -8px rgba(0,0,0,0.35); font-size: 0.9rem; font-weight: 500; animation: toastIn .25s ease both; }
@keyframes toastIn { from { opacity: 0; transform: translateX(20px);} to { opacity: 1; transform: translateX(0);} }
.toast-success { background: #EAF3E4; color: #3E5C31; border: 1px solid #B9D4A8; }
.toast-error { background: #F7E7E7; color: #7A2E2E; border: 1px solid #E0B4B4; }
.toast-info { background: #FBF1E3; color: #6E4438; border: 1px solid #E7CBA6; }

/* ---------- Video wrapper (prevents right-click / drag) ---------- */
.video-shield { position: relative; }
.video-shield::before {
  content: '';
  position: absolute; inset: 0;
  z-index: 5;
  pointer-events: none;
}
.video-shield .yt-frame { pointer-events: auto; }

/* ---------- Skeleton loader ---------- */
.skeleton { background: linear-gradient(90deg, #EDE0D0 25%, #F5EBDC 37%, #EDE0D0 63%); background-size: 400% 100%; animation: skeleton 1.4s ease infinite; border-radius: 0.6rem; }
@keyframes skeleton { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }

/* ---------- Verification stamp (coffee ring) ---------- */
.verify-stamp {
  width: 120px; height: 120px; border-radius: 999px;
  border: 3px solid var(--sage, #6B8E5A);
  display: flex; align-items: center; justify-content: center;
  position: relative;
  transform: rotate(-8deg);
}
.verify-stamp::after {
  content: '';
  position: absolute; inset: -10px;
  border: 1px dashed rgba(107,142,90,0.4);
  border-radius: 999px;
}

/* ---------- Tabs ---------- */
.tab-btn { padding: 0.5rem 1rem; border-radius: 0.6rem; font-weight: 600; font-size: 0.88rem; color: #6E4438; transition: background .15s ease, color .15s ease; }
.tab-btn.active { background: var(--espresso); color: var(--latte); }

/* ---------- Badge ---------- */
.badge { display: inline-flex; align-items: center; gap: 0.3rem; font-size: 0.72rem; font-weight: 700; padding: 0.2rem 0.6rem; border-radius: 999px; }
.badge-pending { background: #FCEBCB; color: #8A5A00; }
.badge-approved { background: #DCEFD2; color: #3E5C31; }
.badge-rejected { background: #F7DCDC; color: #7A2E2E; }