/* ==========================================================================
   Vidyodaya Academy — courses.php only styles
   Loaded only on courses.php (via $extraStyles). Reuses the shared design
   system + existing components (course-card, stat-strip, topper-carousel,
   testimonial-grid, steps, cta-banner) — new rules here are either genuinely
   new sections (hero, filters, compare table, feature grid, journey,
   visual break, modal) or small extensions of shared components.
   ========================================================================== */

/* ==========================================================================
   Hero — light two-column hero, floating cards, mouse-parallax shapes
   ========================================================================== */
.courses-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(40px, 7vw, 64px) 0 clamp(56px, 8vw, 88px);
}
.courses-hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(32px, 5vw, 56px);
  align-items: center;
  position: relative;
  z-index: 1;
}
.courses-hero__title { font-size: clamp(1.8rem, 1.3rem + 2.2vw, 3rem); font-weight: 800; letter-spacing: -0.01em; }
.courses-hero__text { color: var(--ink-soft); max-width: 54ch; font-size: clamp(1rem, 0.95rem + 0.3vw, 1.08rem); }
.courses-hero__cta-row { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 28px; }

.courses-hero__visual { position: relative; padding: 28px; max-width: 440px; margin-inline: auto; will-change: transform; }
.courses-hero__frame {
  position: relative;
  z-index: 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4 / 5;
  will-change: transform;
}
.courses-hero__frame img { width: 100%; height: 100%; object-fit: cover; }

.courses-hero__shape {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  will-change: transform;
}
.courses-hero__shape--circle {
  width: 260px; height: 260px;
  top: -30px; right: -40px;
  background: radial-gradient(circle, var(--accent-soft) 0%, rgba(227, 241, 239, 0) 70%);
}
.courses-hero__shape--dot {
  width: 18px; height: 18px;
  left: 6px; bottom: 54px;
  background: var(--yellow);
  box-shadow: var(--shadow-md);
  z-index: 2;
}
@media (prefers-reduced-motion: no-preference) {
  .courses-hero__shape--circle { animation: floatSlow 10s ease-in-out infinite; }
  .courses-hero__shape--dot { animation: floatIdle 4.5s ease-in-out infinite; }
}
.courses-hero__badge { will-change: transform; }

@media (max-width: 991.98px) {
  .courses-hero__grid { grid-template-columns: 1fr; }
  .courses-hero__visual { order: -1; max-width: 340px; }
}

/* ==========================================================================
   Course filter bar
   ========================================================================== */
.course-filters-wrap {
  display: flex;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: 4px;
  margin-bottom: clamp(28px, 4vw, 40px);
}
.course-filters-wrap::-webkit-scrollbar { display: none; }
.course-filters {
  display: flex;
  gap: 10px;
  margin: 0 auto;
}
.course-filter {
  position: relative;
  white-space: nowrap;
  padding: 11px 22px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink-soft);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
.course-filter:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); }
.course-filter.is-active { background: var(--accent); border-color: var(--accent); color: var(--on-navy); }
.course-filter.is-active:hover { color: var(--on-navy); transform: none; }

/* Filtered-out cards fade/scale away; JS removes them from grid flow
   (display:none) once the transition finishes. */
.course-grid .course-card {
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease), box-shadow var(--dur-base) var(--ease), border-color var(--dur-base) var(--ease);
}
.course-grid .course-card.is-hidden {
  opacity: 0;
  transform: scale(0.92);
  pointer-events: none;
}

/* Brief pulse when arriving via a direct link to this course (e.g. the
   footer's "Courses" list) so it's obvious which card was linked. */
.course-grid .course-card.is-highlighted {
  box-shadow: 0 0 0 3px var(--yellow), var(--shadow-lg);
}

/* ==========================================================================
   Find The Right Program — comparison table (desktop) / cards (mobile)
   ========================================================================== */
.compare-table-wrap { overflow-x: auto; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
.compare-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  background: var(--surface);
}
.compare-table th, .compare-table td {
  text-align: left;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  font-size: 0.92rem;
}
.compare-table thead th {
  background: var(--navy);
  color: var(--on-navy);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.compare-table tbody tr { transition: background-color var(--dur-fast) var(--ease); }
.compare-table tbody tr:hover { background: var(--bg-alt); }
.compare-table tbody tr:last-child td { border-bottom: none; }
.compare-table td:first-child { font-weight: 700; color: var(--navy); font-family: var(--font-display); }

.compare-cards { display: none; }
.compare-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}
.compare-card + .compare-card { margin-top: 14px; }
.compare-card__title { font-family: var(--font-display); font-weight: 700; color: var(--navy); margin-bottom: 10px; }
.compare-card dl { display: grid; grid-template-columns: auto 1fr; gap: 6px 14px; margin: 0; }
.compare-card dt { color: var(--ink-faint); font-size: 0.82rem; font-weight: 600; }
.compare-card dd { margin: 0; font-size: 0.88rem; color: var(--ink); }

@media (max-width: 767.98px) {
  .compare-table-wrap { display: none; }
  .compare-cards { display: block; }
}

/* ==========================================================================
   Why Our Batches Work Differently — feature cards with expanding line
   ========================================================================== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(20px, 3vw, 28px);
}
.feature-card {
  position: relative;
  padding: clamp(24px, 3vw, 32px);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur-base) var(--ease), box-shadow var(--dur-base) var(--ease);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.feature-card__top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.feature-card__number {
  font-family: var(--font-display); font-weight: 800; font-size: 1.6rem; color: var(--accent-soft);
  transition: color var(--dur-base) var(--ease), transform var(--dur-base) var(--ease);
}
.feature-card:hover .feature-card__number { color: var(--yellow); transform: translateX(4px); }
.feature-card__icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; border-radius: var(--radius-md);
  background: var(--accent-soft); color: var(--accent);
  transition: transform var(--dur-base) var(--ease);
}
.feature-card:hover .feature-card__icon { transform: scale(1.08) rotate(-4deg); }
.feature-card__title { font-size: 1.1rem; margin-bottom: 8px; }
.feature-card__text { color: var(--ink-soft); font-size: 0.93rem; margin: 0 0 18px; }
.feature-card__line { position: relative; height: 2px; background: var(--line); overflow: hidden; }
.feature-card__line::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(90deg, var(--accent), var(--yellow));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s var(--ease);
}
.feature-card:hover .feature-card__line::after { transform: scaleX(1); }
.feature-card__arrow {
  position: absolute; top: 24px; right: 24px;
  color: var(--accent);
  opacity: 0; transform: translateX(-6px);
  transition: opacity var(--dur-base) var(--ease), transform var(--dur-base) var(--ease);
}
.feature-card:hover .feature-card__arrow { opacity: 1; transform: translateX(0); }

@media (max-width: 767.98px) {
  .feature-grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Your Journey With Vidyodaya — 4-step horizontal process
   ========================================================================== */
.journey-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(20px, 3vw, 32px);
  position: relative;
}
.journey-line {
  position: absolute;
  top: 27px;
  left: calc(12.5% + 4px);
  right: calc(12.5% + 4px);
  height: 2px;
  background: var(--line);
  z-index: 0;
}
.journey-line__fill {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, var(--accent), var(--yellow));
  transform: scaleX(0);
  transform-origin: left;
}
.journey-step { position: relative; z-index: 1; text-align: center; }
.journey-step__number {
  display: inline-flex; align-items: center; justify-content: center;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--line);
  color: var(--ink-soft);
  font-family: var(--font-display); font-weight: 800; font-size: 1.1rem;
  margin-bottom: 18px;
  transition: background-color var(--dur-base) var(--ease), border-color var(--dur-base) var(--ease), color var(--dur-base) var(--ease), transform var(--dur-base) var(--ease);
}
.journey-step.is-active .journey-step__number {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-navy);
  transform: scale(1.08);
}
.journey-step__title { font-size: 1.02rem; margin-bottom: 6px; }
.journey-step__text { color: var(--ink-soft); font-size: 0.88rem; margin: 0; max-width: 26ch; margin-inline: auto; }

@media (max-width: 767.98px) {
  .journey-steps { grid-template-columns: 1fr; gap: 32px; text-align: left; }
  .journey-line { display: none; }
  .journey-step { text-align: left; display: flex; gap: 16px; align-items: flex-start; }
  .journey-step__number { margin-bottom: 0; flex-shrink: 0; }
  .journey-step__text { margin-inline: 0; }
}

/* .visual-break now lives in assets/style.css (shared with contact.php). */

/* ==========================================================================
   Course detail modal
   ========================================================================== */
.course-modal {
  position: fixed;
  inset: 0;
  z-index: 2100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-base) var(--ease), visibility var(--dur-base);
}
.course-modal.is-open { opacity: 1; visibility: visible; }
.course-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(9, 20, 34, 0.6);
  backdrop-filter: blur(6px);
}
.course-modal__panel {
  position: relative;
  z-index: 1;
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  max-width: 560px;
  width: 100%;
  max-height: 86vh;
  overflow-y: auto;
  padding: clamp(28px, 4vw, 40px);
  transform: scale(0.95);
  opacity: 0;
  transition: transform var(--dur-base) var(--ease), opacity var(--dur-base) var(--ease);
}
.course-modal.is-open .course-modal__panel { transform: scale(1); opacity: 1; }
.course-modal__close {
  position: absolute;
  top: 16px; right: 16px;
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--bg-alt);
  color: var(--ink-soft);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: background-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.course-modal__close:hover { background: var(--accent-soft); color: var(--accent); }

.course-modal__body .course-card__tag { margin-bottom: 12px; }
.course-modal__title { font-size: 1.4rem; margin-bottom: 16px; padding-right: 30px; }
.course-modal__lead { color: var(--ink-soft); margin-bottom: 18px; }
.course-modal__label {
  font-family: var(--font-display); font-weight: 700; font-size: 0.85rem;
  text-transform: uppercase; letter-spacing: 0.04em; color: var(--navy);
  margin: 20px 0 8px;
}
.course-modal__subjects { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 4px; }
.course-modal__subjects li {
  background: var(--accent-soft); color: var(--accent); font-weight: 600; font-size: 0.82rem;
  padding: 5px 12px; border-radius: 999px;
}
.course-modal__facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 4px 0 4px; }
.course-modal__facts dt { font-family: var(--font-display); font-weight: 800; color: var(--navy); font-size: 1.05rem; }
.course-modal__facts dd { margin: 0; color: var(--ink-soft); font-size: 0.78rem; }
.course-modal__benefits { margin: 4px 0; }
.course-modal__benefits li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 8px;
  color: var(--ink-soft);
  font-size: 0.92rem;
}
.course-modal__benefits li::before {
  content: "\2713";
  position: absolute; left: 0; top: 0;
  color: var(--accent);
  font-weight: 700;
}
.course-modal__cta { width: 100%; justify-content: center; margin-top: 22px; }

@media (max-width: 575.98px) {
  .course-modal { padding: 0; }
  .course-modal__panel { max-width: none; width: 100%; height: 100%; max-height: none; border-radius: 0; }
  .course-modal__facts { grid-template-columns: repeat(3, 1fr); gap: 8px; }
}