/* ============================================================
   NURSE EXAM HELP — sections.css  (light bluish theme)
   Photo-backed hero · marquee · programs · coach flip-cards ·
   story carousel (drag + rubber-band) · voices strip · process ·
   final CTA · sticky bar · floating WhatsApp.
   ============================================================ */

/* ---------- Section shell (tight rhythm = high density) ---------- */
.section { padding: clamp(3.5rem, 7vw, 5.5rem) var(--pad-x); }
.section-alt { background: var(--bg-1); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 1440px; margin: 0 auto 2.4rem; }
.section-title { font-size: clamp(2.1rem, 5vw, 3.6rem); }
.section-sub { color: var(--silver); max-width: 58ch; margin-top: 0.8rem; font-size: 20px; }

/* ============ HERO — photographic background, light scrim ============ */
.hero {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + 2.5rem) var(--pad-x) 3rem;
  background:
    linear-gradient(100deg,
      rgba(246, 250, 253, 0.96) 0%,
      rgba(246, 250, 253, 0.88) 36%,
      rgba(240, 247, 253, 0.55) 62%,
      rgba(240, 247, 253, 0.08) 100%),
    url('../assets/img/hero-banner.jpg') right center / cover no-repeat;
  border-bottom: 1px solid var(--line);
}
.hero-inner {
  max-width: 1440px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr;
}
.hero-title { font-size: clamp(2.2rem, 3.6vw, 3.4rem); margin: 1.1rem 0 1.2rem; }
.hero-sub { font-size: clamp(1.15rem, 1.8vw, 1.4rem); color: var(--silver); max-width: 44ch; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-top: 1.8rem; }

@media (max-width: 980px) {
  .hero {
    min-height: 0;
    background:
      linear-gradient(rgba(246, 250, 253, 0.88), rgba(246, 250, 253, 0.84)),
      url('../assets/img/hero-banner.jpg') right center / cover no-repeat;
  }
}

/* ============ MARQUEE (single instance on page) ============ */
.marquee {
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: #E1EEF9;
  padding: 0.8rem 0;
}
.marquee-track {
  display: flex;
  width: max-content;
  gap: 2.2rem;
  white-space: nowrap;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dim);
}
.marquee-track b { color: var(--accent); font-weight: 700; }
@media (prefers-reduced-motion: no-preference) {
  .marquee-track { animation: marquee 36s linear infinite; }
  @keyframes marquee { to { transform: translateX(-50%); } }
}

/* ============ PROGRAMS ============ */
.program-grid {
  max-width: 1440px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.program-card {
  position: relative;
  background: var(--bg-2);
  padding: 1.6rem 1.5rem 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  min-height: 230px;
  transition: background 0.25s, box-shadow 0.25s;
}
.program-card:hover { background: var(--bg-3); box-shadow: inset 0 0 0 1px var(--accent); }
.program-idx {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--bg-0);
  -webkit-text-stroke: 1px var(--line-strong);
  line-height: 1;
}
.program-card:hover .program-idx { -webkit-text-stroke: 1px var(--accent); }
.program-tag {
  align-self: flex-start;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--line-strong);
  padding: 3px 9px;
}
.program-card h3 { font-size: 1.25rem; letter-spacing: 0.02em; }
.program-card p { color: var(--silver); font-size: 17px; line-height: 1.42; flex: 1; }
.program-go {
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 14px;
  color: var(--accent);
}
.program-go::after { content: ' →'; transition: transform 0.2s var(--ease-snap); display: inline-block; }
.program-card:hover .program-go::after { transform: translateX(5px); }
@media (max-width: 1024px) { .program-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .program-grid { grid-template-columns: 1fr; } }

/* ============ COACHES — flip cards ============ */
.coach-grid {
  max-width: 1440px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.2rem;
  perspective: 1400px;
}
.coach { height: 380px; cursor: pointer; }
.coach-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.7s var(--ease-snap);
}
.coach:hover .coach-inner,
.coach.is-flipped .coach-inner { transform: rotateY(180deg); }
.coach-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border: 1px solid var(--line-strong);
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
}
.coach-front { justify-content: space-between; gap: 1rem; background: var(--bg-2); overflow: hidden; }
.coach-art {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  filter: grayscale(1) contrast(1.05);
}
/* scrim only guards the text zone at the bottom — image stays visible up top */
.coach-front::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(180deg,
    rgba(9, 26, 46, 0.08) 0%,
    rgba(9, 26, 46, 0.42) 44%,
    rgba(9, 26, 46, 0.94) 80%);
}
.coach-front > :not(.coach-art) { position: relative; z-index: 1; }
.coach-num {
  align-self: flex-start;
  font-family: var(--font-display);
  font-size: 2.2rem;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--accent-2);
  background: rgba(9, 26, 46, 0.55);
  padding: 4px 12px;
}
.coach-front h3 { font-size: 1.35rem; color: #FFFFFF; }
.coach-front p { color: rgba(255, 255, 255, 0.88); font-size: 17px; margin-top: 0.5rem; }
.coach-flip-hint {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.72);
}
.coach-back {
  transform: rotateY(180deg);
  background: var(--bg-2);
  gap: 0.9rem;
}
.coach-back h4 {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
}
.coach-certs { display: flex; flex-wrap: wrap; gap: 6px; }
.coach-certs span {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid var(--line-strong);
  color: var(--ink);
  padding: 3px 9px;
}
.coach-back p { color: var(--silver); font-size: 17px; flex: 1; }
@media (max-width: 1100px) { .coach-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .coach-grid { grid-template-columns: 1fr; } .coach { height: 340px; } }

/* ============ EVIDENCE WALL — counter-scrolling pinned proof ============ */
.wall {
  display: grid;
  gap: 0.2rem;
  margin-inline: calc(var(--pad-x) * -1);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 7%, #000 93%, transparent);
}
.wall-row { overflow: hidden; }
.wall-track {
  display: flex;
  gap: 1.3rem;
  width: max-content;
  padding: 1.1rem 0.65rem 1.5rem;
  animation: wall-scroll 58s linear infinite;
  will-change: transform;
}
.wall-row.rev .wall-track { animation-direction: reverse; }
.wall-row:hover .wall-track,
.wall-row:focus-within .wall-track { animation-play-state: paused; }
@keyframes wall-scroll { to { transform: translateX(-50%); } }

.wall-card {
  position: relative;
  width: 300px;
  flex: none;
  background: #FFFFFF;
  border: 1px solid var(--line-strong);
  padding: 10px;
  cursor: zoom-in;
  transform: rotate(var(--tilt, -2deg));
  transition: transform 0.35s var(--ease-snap), box-shadow 0.35s;
}
.wall-row .wall-card:nth-child(2n) { --tilt: 1.8deg; }
.wall-row .wall-card:nth-child(3n) { --tilt: -1.1deg; }
.wall-card:hover,
.wall-card:focus-visible {
  transform: rotate(0deg) translateY(-8px) scale(1.05);
  z-index: 2;
  box-shadow: 0 26px 52px -20px rgba(12, 34, 56, 0.5);
}
.wall-card::before {
  content: '';
  position: absolute;
  top: -9px;
  left: 50%;
  width: 86px;
  height: 20px;
  transform: translateX(-50%) rotate(-2deg);
  background: rgba(14, 123, 232, 0.16);
  border: 1px solid rgba(14, 123, 232, 0.3);
}
.wall-card img {
  display: block;
  width: 100%;
  height: 190px;
  object-fit: cover;
  object-position: top left;
  pointer-events: none;
}
.wall-cap {
  padding: 0.65rem 0.15rem 0.2rem;
  border-left: 3px solid var(--accent);
  padding-left: 0.55rem;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dim);
}
@media (prefers-reduced-motion: reduce) {
  .wall-track { animation: none !important; flex-wrap: wrap; width: 100%; }
  .wall { -webkit-mask-image: none; mask-image: none; }
  .wall-card { transform: none; }
}

/* ============ LIGHTBOX ============ */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 2rem;
  background: rgba(9, 26, 46, 0.9);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
}
.lightbox.open { opacity: 1; pointer-events: auto; }
.lightbox figure { max-width: min(920px, 92vw); }
.lightbox img {
  display: block;
  margin: 0 auto;
  max-width: 100%;
  max-height: 72vh;
  background: #FFFFFF;
  padding: 12px;
  border: 1px solid var(--line-strong);
  box-shadow: 0 30px 80px -20px rgba(0, 0, 0, 0.6);
}
.lightbox figcaption {
  color: #FFFFFF;
  text-align: center;
  margin-top: 0.9rem;
  font-size: 17px;
  white-space: pre-line;
}
.lightbox-close {
  position: fixed;
  top: 14px;
  right: 22px;
  font-size: 44px;
  line-height: 1;
  color: #FFFFFF;
}
.lightbox-close:hover { color: var(--accent-2); }

/* ============ PROCESS ============ */
.process-grid {
  max-width: 1440px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  counter-reset: step;
}
.process-step { background: var(--bg-2); padding: 1.6rem 1.4rem; }
.process-step:nth-child(even) { background: #F0F7FD; }
.process-num {
  font-family: var(--font-display);
  font-size: 2.4rem;
  color: transparent;
  -webkit-text-stroke: 1px var(--accent);
}
.process-step h3 { font-size: 1.2rem; margin: 0.7rem 0 0.4rem; }
.process-step p { color: var(--silver); font-size: 17px; }
@media (max-width: 900px) { .process-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .process-grid { grid-template-columns: 1fr; } }

/* ============ FINAL CTA ============ */
.cta-final {
  text-align: center;
  background:
    radial-gradient(50% 70% at 50% 100%, rgba(14, 123, 232, 0.14), transparent 70%),
    var(--bg-1);
  border-top: 1px solid var(--line);
}
.cta-title { font-size: clamp(3rem, 9vw, 6.5rem); }
.cta-sub { color: var(--silver); font-size: 21px; margin-top: 1rem; }
.cta-actions { margin-top: 2rem; }
.cta-lines {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.4rem;
  margin-top: 1.6rem;
  font-size: 18px;
  color: var(--silver);
}
.cta-lines a:hover { color: var(--accent); }
.cta-note {
  margin-top: 1.2rem;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}
@media (prefers-reduced-motion: no-preference) {
  .cta-pulse { animation: pulse 2.6s ease-in-out infinite; }
  @keyframes pulse {
    0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(14, 123, 232, 0.35); }
    50% { transform: scale(1.03); box-shadow: 0 0 0 14px rgba(14, 123, 232, 0); }
  }
}

/* ============ STICKY CTA BAR ============ */
.sticky-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.4rem;
  padding: 0.7rem var(--pad-x);
  background: rgba(255, 255, 255, 0.95);
  border-top: 1px solid var(--accent);
  backdrop-filter: blur(10px);
  transform: translateY(110%);
  transition: transform 0.4s var(--ease-snap);
}
.sticky-cta.is-visible { transform: none; }
.sticky-cta[aria-hidden="true"] .btn { pointer-events: none; }
.sticky-note {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--silver);
}
@media (max-width: 640px) {
  .sticky-cta { flex-direction: column; gap: 0.5rem; }
  .sticky-note { font-size: 12px; }
}

/* ============ FLOATING WHATSAPP ============ */
.float-wa {
  position: fixed;
  right: 18px;
  bottom: 84px;
  z-index: 45;
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 12px 28px -10px rgba(12, 34, 56, 0.5);
  transition: background 0.2s, transform 0.2s var(--ease-snap);
}
.float-wa:hover { background: var(--accent-deep); transform: translateY(-2px); }
.float-wa svg { width: 26px; height: 26px; }