/* =========================================================
   CourseLink — Clean, Structured Academic Course Directory
   Organized by Academic Programs -> Cycles inside each course
   ========================================================= */

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: #0b0e17;
  color: #e2e8f0;
  min-height: 100vh;
  line-height: 1.6;
}

a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; }

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ── NAVBAR ── */
.navbar {
  background: #121826;
  border-bottom: 1px solid #1e293b;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.22rem;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #6366f1, #06b6d4);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: #fff;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
}

.logo span { color: #6366f1; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  color: #94a3b8;
  transition: 0.15s;
}

.nav-links a:hover { color: #fff; background: #1e293b; }
.nav-links a.active { color: #fff; background: #1e293b; font-weight: 700; border-bottom: 2px solid #6366f1; }

.nav-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.btn-dev {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 8px;
  background: linear-gradient(135deg, #6366f1, #06b6d4);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  border: none;
  transition: 0.15s;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}
.btn-dev:hover {
  opacity: 0.92;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(99, 102, 241, 0.45);
}

.btn-tg {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 8px;
  background: #0088cc;
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  border: none;
  transition: 0.15s;
}
.btn-tg:hover { background: #0077b5; transform: translateY(-1px); }

.burger {
  display: none;
  background: none;
  border: none;
  color: #94a3b8;
  font-size: 1.4rem;
  padding: 4px;
}

/* Mobile Drawer */
.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 2000;
}
.mobile-drawer {
  position: fixed;
  top: 0; left: -100%;
  width: 280px; height: 100%;
  background: #121826;
  border-right: 1px solid #1e293b;
  z-index: 2001;
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  transition: left 0.25s ease;
}
.mobile-drawer.open { left: 0; }
.mobile-overlay.open { display: block; }
.mobile-drawer a {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 14px; border-radius: 8px;
  font-size: 0.95rem; color: #94a3b8; font-weight: 600;
  margin-bottom: 4px; transition: 0.15s;
}
.mobile-drawer a:hover, .mobile-drawer a.active { color: #fff; background: #1e293b; }
.mobile-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 24px; }
.mobile-logo span { font-size: 1.15rem; font-weight: 800; color: #fff; }

/* ── HERO BANNER ── */
.hero-banner {
  padding: 44px 0 32px;
  text-align: center;
  background: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.12) 0%, transparent 70%);
  border-bottom: 1px solid #1e293b;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #161f33;
  border: 1px solid #273552;
  border-radius: 100px;
  padding: 5px 16px;
  font-size: 0.8rem;
  font-weight: 600;
  color: #94a3b8;
  margin-bottom: 16px;
}

.hero-title {
  font-size: clamp(1.85rem, 4.5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.22;
  margin-bottom: 10px;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #6366f1, #06b6d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  color: #94a3b8;
  font-size: 0.98rem;
  max-width: 580px;
  margin: 0 auto 20px;
}

/* ── BATCH CARDS (Homepage Quick Links) ── */
.batch-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 28px 0 36px;
}

.batch-card-box {
  background: #121826;
  border: 1px solid #1e293b;
  border-radius: 14px;
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: 0.2s;
  cursor: pointer;
}
.batch-card-box:hover {
  border-color: #6366f1;
  background: #172033;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

.batch-icon-square {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}
.icon-hsc26 { background: rgba(99,102,241,0.15); color: #818cf8; }
.icon-hsc27 { background: rgba(6,182,212,0.15); color: #22d3ee; }
.icon-eng { background: rgba(244,63,94,0.15); color: #fb7185; }

.batch-box-info h3 { font-size: 1rem; font-weight: 700; margin-bottom: 2px; }
.batch-box-info p { font-size: 0.8rem; color: #64748b; }
.batch-box-arrow { margin-left: auto; color: #475569; font-size: 1.1rem; }
.batch-card-box:hover .batch-box-arrow { color: #6366f1; }

/* ── SEARCH & FILTER CONTROLS ── */
.search-filter-wrapper {
  background: #121826;
  border: 1px solid #1e293b;
  border-radius: 14px;
  padding: 16px;
  margin-bottom: 32px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
}

.search-input-box {
  display: flex;
  align-items: center;
  background: #0b0e17;
  border: 1px solid #1e293b;
  border-radius: 10px;
  padding: 0 14px;
  margin-bottom: 12px;
  transition: 0.15s;
}
.search-input-box:focus-within {
  border-color: #6366f1;
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}
.search-input-box i { color: #475569; font-size: 1.05rem; }
.search-input-box input {
  flex: 1;
  padding: 12px 10px;
  background: none;
  border: none;
  color: #fff;
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
}
.search-input-box input::placeholder { color: #475569; }
.search-input-box .btn-clear {
  background: none;
  border: none;
  color: #475569;
  font-size: 1rem;
  cursor: pointer;
  padding: 4px;
  display: none;
}
.search-input-box .btn-clear.show { display: block; }

.filter-chips-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  padding-top: 10px;
  border-top: 1px solid #1e293b;
}

.filter-tag-label {
  font-size: 0.76rem;
  font-weight: 700;
  color: #64748b;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 0.82rem;
  font-weight: 600;
  border: 1px solid #1e293b;
  background: #0b0e17;
  color: #94a3b8;
  cursor: pointer;
  transition: 0.15s;
  white-space: nowrap;
}
.chip:hover { color: #fff; border-color: #334155; }
.chip.active {
  background: #6366f1;
  color: #fff;
  border-color: #6366f1;
}

.results-stats-text {
  margin-left: auto;
  font-size: 0.84rem;
  color: #64748b;
  font-weight: 600;
}
.results-stats-text strong { color: #22d3ee; }

/* ── ACADEMIC PROGRAM CONTAINERS (THE MAIN STRUCTURE) ── */
.programs-wrapper {
  display: flex;
  flex-direction: column;
  gap: 32px;
  margin-bottom: 60px;
}

.program-card {
  background: #121826;
  border: 1px solid #1e293b;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  transition: 0.2s;
}
.program-card:hover {
  border-color: #334155;
}

/* Program Header */
.program-header {
  padding: 24px;
  background: linear-gradient(180deg, #161f33 0%, #121826 100%);
  border-bottom: 1px solid #1e293b;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  flex-wrap: wrap;
}

.program-header-left {
  flex: 1;
  min-width: 280px;
}

.program-meta-badges {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.p-badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.p-badge-batch { background: rgba(99,102,241,0.2); color: #a5b4fc; border: 1px solid rgba(99,102,241,0.35); }
.p-badge-provider { background: rgba(6,182,212,0.15); color: #22d3ee; border: 1px solid rgba(6,182,212,0.3); }
.p-badge-count { background: #1e293b; color: #94a3b8; }

.program-title {
  font-size: 1.45rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 6px;
}

.program-instructor {
  font-size: 0.85rem;
  color: #818cf8;
  font-weight: 600;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.program-desc {
  font-size: 0.88rem;
  color: #94a3b8;
  line-height: 1.6;
}

/* Program Cycles Area */
.program-cycles-section {
  padding: 20px 24px 24px;
}

.cycles-section-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: #64748b;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.cycles-section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: #1e293b;
}

/* Cycles Grid Inside The Program */
.cycles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

/* Single Cycle Mini-Card */
.cycle-card-item {
  background: #0b0e17;
  border: 1px solid #1e293b;
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: 0.2s;
}
.cycle-card-item:hover {
  border-color: #6366f1;
  transform: translateY(-3px);
  box-shadow: 0 6px 18px rgba(0,0,0,0.4);
}

/* 16:9 Thumbnail */
.cycle-thumb-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #060911;
  overflow: hidden;
}
.cycle-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.cycle-card-item:hover .cycle-thumb-img {
  transform: scale(1.04);
}

/* Fallback Poster */
.thumb-fallback {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12px;
  text-align: center;
  background: linear-gradient(135deg, #101626 0%, #080c14 100%);
}
.thumb-fallback i { font-size: 1.6rem; color: #6366f1; margin-bottom: 4px; opacity: 0.8; }
.thumb-fallback-name { font-size: 0.78rem; font-weight: 700; color: #e2e8f0; line-height: 1.3; margin-bottom: 2px; }
.thumb-fallback-file { font-size: 0.65rem; font-family: monospace; color: #64748b; background: rgba(255,255,255,0.06); padding: 1px 6px; border-radius: 4px; }

/* Cycle Badge */
.cycle-status-pill {
  position: absolute;
  top: 8px;
  right: 8px;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 100px;
  backdrop-filter: blur(8px);
}
.status-active { background: rgba(16,185,129,0.25); color: #34d399; border: 1px solid rgba(16,185,129,0.4); }
.status-soon   { background: rgba(245,158,11,0.25); color: #fbbf24; border: 1px solid rgba(245,158,11,0.4); }

.cycle-num-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 0.68rem;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,0.15);
}

/* Cycle Body */
.cycle-card-body {
  padding: 14px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.cycle-card-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.35;
  margin-bottom: 12px;
}

.cycle-card-actions {
  display: flex;
  gap: 6px;
  margin-top: auto;
}

.btn-cycle-join {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 8px 10px;
  border-radius: 6px;
  background: #0088cc;
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  border: none;
  transition: 0.15s;
}
.btn-cycle-join:hover { background: #0077b5; }
.btn-cycle-join.disabled {
  background: #1e293b;
  color: #475569;
  cursor: not-allowed;
}

.btn-cycle-copy {
  width: 34px;
  height: 34px;
  border-radius: 6px;
  background: #1e293b;
  border: none;
  color: #94a3b8;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: 0.15s;
  flex-shrink: 0;
}
.btn-cycle-copy:hover { background: #273552; color: #6366f1; }

/* ── EMPTY SEARCH ── */
.empty-search-state {
  text-align: center;
  padding: 60px 20px;
  background: #121826;
  border: 1px solid #1e293b;
  border-radius: 16px;
}
.empty-search-state i { font-size: 3rem; color: #334155; margin-bottom: 12px; display: block; }
.empty-search-state h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 6px; }
.empty-search-state p { color: #64748b; font-size: 0.9rem; margin-bottom: 16px; }

/* ── TELEGRAM COMMUNITY BANNER ── */
.tg-channel-banner {
  background: linear-gradient(135deg, #142038 0%, #121826 100%);
  border: 1px solid #1e293b;
  border-radius: 16px;
  padding: 40px 24px;
  text-align: center;
  margin-bottom: 60px;
}
.tg-channel-banner h2 { font-size: 1.5rem; font-weight: 800; margin-bottom: 8px; }
.tg-channel-banner p { color: #94a3b8; font-size: 0.95rem; max-width: 520px; margin: 0 auto 20px; }

/* ── FOOTER ── */
.site-footer {
  background: #121826;
  border-top: 1px solid #1e293b;
  padding: 32px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-brand { display: flex; align-items: center; gap: 10px; }
.footer-nav {
  display: flex;
  gap: 16px;
  list-style: none;
  flex-wrap: wrap;
}
.footer-nav a { font-size: 0.84rem; color: #64748b; transition: 0.15s; }
.footer-nav a:hover { color: #94a3b8; }
.footer-copy { font-size: 0.82rem; color: #475569; }

/* ── REQUEST PAGE ── */
.request-grid-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
  margin: 32px 0 48px;
}
.form-box {
  background: #121826;
  border: 1px solid #1e293b;
  border-radius: 16px;
  padding: 28px;
}
.form-box h2 { font-size: 1.3rem; font-weight: 800; margin-bottom: 4px; }
.form-box > p { font-size: 0.85rem; color: #64748b; margin-bottom: 20px; }
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 0.84rem; font-weight: 600; color: #94a3b8; margin-bottom: 6px; }
.form-control {
  width: 100%;
  padding: 11px 14px;
  background: #0b0e17;
  border: 1px solid #1e293b;
  border-radius: 8px;
  color: #fff;
  font-size: 0.92rem;
  font-family: inherit;
  outline: none;
  transition: 0.15s;
}
.form-control:focus { border-color: #6366f1; }
.form-control::placeholder { color: #475569; }
select.form-control { appearance: none; cursor: pointer; }
.btn-submit-req {
  width: 100%;
  padding: 12px;
  border-radius: 8px;
  background: linear-gradient(135deg, #6366f1, #4f46e5);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: 0.15s;
}
.btn-submit-req:hover { opacity: 0.9; }

.notice-box {
  background: #121826;
  border: 1px solid #1e293b;
  border-radius: 16px;
  padding: 28px;
}
.notice-box h2 { font-size: 1.3rem; font-weight: 800; margin-bottom: 16px; }
.notice-card-item {
  display: flex;
  gap: 12px;
  padding: 14px;
  border-radius: 10px;
  background: #0b0e17;
  margin-bottom: 12px;
  font-size: 0.86rem;
  color: #94a3b8;
  line-height: 1.6;
}
.notice-card-item i { color: #22d3ee; flex-shrink: 0; margin-top: 2px; }

/* Reference Table */
.ref-table-box {
  background: #121826;
  border: 1px solid #1e293b;
  border-radius: 16px;
  padding: 28px;
  margin-bottom: 60px;
}
.ref-table-box h2 { font-size: 1.3rem; font-weight: 800; margin-bottom: 4px; }
.ref-table-box > p { font-size: 0.85rem; color: #64748b; margin-bottom: 20px; }
.ref-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.ref-table th, .ref-table td { padding: 12px 14px; border: 1px solid #1e293b; text-align: left; }
.ref-table th { background: #0b0e17; color: #64748b; font-weight: 700; font-size: 0.78rem; text-transform: uppercase; }
.ref-table tr:hover td { background: #0b0e17; }
code { font-family: 'Courier New', monospace; background: rgba(99,102,241,0.12); color: #a5b4fc; padding: 2px 6px; border-radius: 4px; font-size: 0.82rem; }

/* ── TOAST NOTIFICATIONS ── */
.toasts {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}
.toast {
  background: #161f33;
  border: 1px solid #273552;
  color: #fff;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.5);
  animation: toast-fade-in 0.25s ease;
  pointer-events: auto;
}
@keyframes toast-fade-in {
  from { transform: translateY(16px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

/* ── RESPONSIVE ── */
@media (max-width: 960px) {
  .batch-cards-grid { grid-template-columns: 1fr; }
  .request-grid-layout { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .btn-tg { display: none; }
  .burger { display: block; }
  .program-header { padding: 18px; }
  .program-cycles-section { padding: 16px; }
  .cycles-grid { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
}
@media (max-width: 520px) {
  .cycles-grid { grid-template-columns: 1fr; gap: 12px; }
  .program-title { font-size: 1.25rem; }
  .filter-chips-row { gap: 6px; }
}