/* ═══════════════════════════════════════════════════════
   GLACE BYTE — COURSES PAGE STYLES
   Page-specific: page hero, filter tabs, course grid,
   learn strip, ielts section, courses footer
═══════════════════════════════════════════════════════ */

/* ── Page Hero ──────────────────────────────────────── */
#page-hero {
  position: relative; z-index: 1;
  padding: 5rem 2.5rem 7rem;
  text-align: center; overflow: hidden;
}
.page-ring {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%,-60%);
  width: 500px; height: 500px; border-radius: 50%;
  background: radial-gradient(circle, rgba(99,102,241,.1) 0%, transparent 65%);
  pointer-events: none;
  animation: ring-p 7s ease-in-out infinite alternate;
}
@keyframes ring-p {
  from { transform: translate(-50%,-60%) scale(1); opacity:.7; }
  to   { transform: translate(-50%,-60%) scale(1.2); opacity:1; }
}

/* ── Filter Tabs ────────────────────────────────────── */
.filter-tabs {
  display: flex; flex-wrap: wrap; gap: .6rem;
  justify-content: center; margin-bottom: 3rem;
}
.f-tab {
  padding: .55rem 1.4rem; border-radius: 50px;
  font-size: .85rem; font-weight: 600;
  background: rgba(255,255,255,.04); border: 1px solid var(--border);
  color: var(--text2); cursor: pointer;
  transition: background .2s, border-color .2s, color .2s;
}
.f-tab:hover { background: var(--card-h); border-color: var(--border-h); color: var(--text); }
.f-tab.active { background: var(--grad); border-color: transparent; color: #fff; }

/* ── Course Grid ────────────────────────────────────── */
#course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}
.course-card { display: flex; flex-direction: column; position: relative; overflow: hidden; cursor: pointer; }
.cc-bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: .1; mix-blend-mode: luminosity; transition: opacity .4s; }
.card:hover .cc-bg { opacity: .2; }
.cc-fade { position: absolute; inset: 0; background: linear-gradient(to top, var(--bg) 30%, transparent); }
.cc-inner { position: relative; z-index: 2; display: flex; flex-direction: column; flex: 1; padding: 2rem; }
.cc-icon {
  width: 50px; height: 50px; border-radius: .75rem;
  background: rgba(99,102,241,.1); border: 1px solid rgba(99,102,241,.22);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.25rem; color: var(--indigo); margin-bottom: 1.25rem;
}
.cc-badge {
  position: absolute; top: 1rem; right: 1rem; z-index: 3;
  padding: .2rem .7rem;
  background: rgba(99,102,241,.12); border: 1px solid rgba(99,102,241,.28);
  border-radius: 50px; font-size: .65rem; font-weight: 700;
  letter-spacing: .1em; color: #A5B4FC; text-transform: uppercase;
}
.cc-title { font-family: var(--font-d); font-weight: 700; font-size: 1.2rem; color: var(--text); margin-bottom: .55rem; }
.cc-desc { color: var(--text2); font-size: .875rem; line-height: 1.72; flex: 1; margin-bottom: 1.75rem; }
.cc-btn {
  display: block; text-align: center; padding: .7rem 1.25rem;
  border-radius: 50px; font-size: .85rem; font-weight: 600;
  text-decoration: none; border: 1px solid rgba(99,102,241,.28);
  color: var(--indigo); transition: background .25s, color .25s, border-color .25s, box-shadow .25s;
}
.cc-btn:hover, .cc-btn.primary { background: var(--grad); color: #fff; border-color: transparent; box-shadow: 0 4px 20px var(--glow-sm); }

/* ── What You Learn Strip ───────────────────────────── */
#learn-strip {
  position: relative; z-index: 1; padding: 5rem 0;
  background: var(--bg2);
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.learn-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 1.25rem; }
.learn-item {
  display: flex; align-items: flex-start; gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: rgba(255,255,255,.02); border: 1px solid var(--border);
  border-radius: 1rem; transition: background .3s, border-color .3s;
}
.learn-item:hover { background: var(--card-h); border-color: var(--border-h); }
.learn-icon {
  width: 36px; height: 36px; border-radius: .5rem; flex-shrink: 0;
  background: rgba(99,102,241,.1); border: 1px solid rgba(99,102,241,.2);
  display: flex; align-items: center; justify-content: center;
  color: var(--indigo); font-size: .85rem;
}

/* ── IELTS Section ──────────────────────────────────── */
#ielts-section {
  position: relative; z-index: 1;
  padding: 8rem 0; border-top: 1px solid var(--border);
}
.ielts-banner {
  position: relative; border-radius: 2rem; overflow: hidden;
  border: 1px solid var(--border); min-height: 460px; display: grid; align-items: center;
}
.ielts-banner img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; opacity: .3; mix-blend-mode: luminosity;
  transition: opacity .5s, transform .7s var(--ease);
}
.ielts-banner:hover img { opacity: .48; transform: scale(1.03); }
.ielts-veil {
  position: absolute; inset: 0;
  background: linear-gradient(to right, rgba(6,8,16,.96) 40%, rgba(6,8,16,.5) 80%, transparent 100%);
}
.ielts-content { position: relative; z-index: 2; padding: 4rem 4.5rem; max-width: 600px; }
.ielts-badge {
  position: absolute; bottom: 2.5rem; right: 2.5rem; z-index: 3;
  background: rgba(6,8,16,.86); backdrop-filter: blur(18px);
  border: 1px solid var(--border); border-radius: 1.25rem;
  padding: 1rem 1.5rem; display: flex; align-items: center; gap: 1rem;
}
.ielts-badge-icon {
  width: 42px; height: 42px; border-radius: .625rem;
  background: var(--grad); display: flex; align-items: center; justify-content: center;
  font-size: 1rem; color: #fff; flex-shrink: 0;
}
@media (max-width: 768px) {
  .ielts-content { padding: 2.5rem 1.5rem; max-width: 100%; }
  .ielts-badge { display: none; }
}

/* ── Courses Footer ─────────────────────────────────── */
#footer {
  position: relative; z-index: 1;
  background: var(--bg2); border-top: 1px solid var(--border);
  padding: 4rem 2.5rem;
}
@media (max-width: 768px) { #footer { padding: 3rem 1.2rem; } }