/* ═══════════════════════════════════════════════════════════════
   PROYECTOS — 3D Game-Cover Shelf Carousel
   BioCivil M&M S.A.S.
═══════════════════════════════════════════════════════════════ */

/* ─── Prevent white flash while .prj-stage fades in ─────────────
   The stage uses animation-fill-mode:both with a short delay,
   starting at opacity:0. Without this, the white body background
   shows through during that delay.                              ── */
html,
body {
  background: oklch(6% 0.03 248);
}

/* ─── Stage (full-page on proyectos.html) ─────────────────────── */
.prj-stage {
  position: relative;
  width: 100%;
  min-height: 100vh;
  /* Touch gesture: solo permite scroll vertical aquí; el swipe horizontal
     lo consume el carrusel sin arrastrar la página */
  touch-action: pan-y;
  background:
    radial-gradient(ellipse 110% 70% at 50% 55%,
      oklch(13% 0.055 248) 0%,
      oklch(6%  0.03  248) 100%);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 5.5rem 0 4rem;
  user-select: none;
  animation: prjStageFadeIn 0.6s ease 0.15s both;
}

@keyframes prjStageFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.prj-stage::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    oklch(52% 0.22 145 / 0.35) 50%,
    transparent 100%
  );
  pointer-events: none;
}

/* Blueprint-style grid overlay */
.prj-stage::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(oklch(100% 0 0 / 0.07) 1px, transparent 1px),
    linear-gradient(90deg, oklch(100% 0 0 / 0.07) 1px, transparent 1px),
    linear-gradient(oklch(52% 0.22 145 / 0.04) 1px, transparent 1px),
    linear-gradient(90deg, oklch(52% 0.22 145 / 0.04) 1px, transparent 1px);
  background-size: 72px 72px, 72px 72px, 360px 360px, 360px 360px;
  pointer-events: none;
  z-index: 0;
}

/* Decorative background orbs */
.prj-bg-orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

.prj-bg-orb--1 {
  width: 600px;
  height: 600px;
  top: -180px;
  left: -150px;
  background: radial-gradient(circle,
    oklch(52% 0.22 145 / 0.22) 0%,
    oklch(52% 0.22 145 / 0.08) 45%,
    transparent 68%
  );
}

.prj-bg-orb--2 {
  width: 480px;
  height: 480px;
  bottom: -100px;
  right: -100px;
  background: radial-gradient(circle,
    oklch(36% 0.18 220 / 0.20) 0%,
    oklch(28% 0.14 240 / 0.08) 45%,
    transparent 68%
  );
}

.prj-bg-orb--3 {
  width: 320px;
  height: 320px;
  top: 38%;
  right: 10%;
  background: radial-gradient(circle,
    oklch(52% 0.22 145 / 0.14) 0%,
    transparent 62%
  );
}

/* Decorative corner accent lines (blueprint feel) */
.prj-bg-lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.prj-bg-lines::before {
  content: '';
  position: absolute;
  top: 12%;
  left: 4%;
  width: 200px;
  height: 200px;
  border: 1px solid oklch(52% 0.22 145 / 0.22);
  border-radius: 50%;
  box-shadow: 0 0 40px oklch(52% 0.22 145 / 0.06) inset;
}

.prj-bg-lines::after {
  content: '';
  position: absolute;
  bottom: 15%;
  right: 4%;
  width: 150px;
  height: 150px;
  border: 1px solid oklch(40% 0.18 220 / 0.24);
  transform: rotate(45deg);
  box-shadow: 0 0 30px oklch(36% 0.18 220 / 0.06) inset;
}

/* ─── Shared dark carousel section (used on index embed too) ──── */
.prj-carousel-section {
  position: relative;
  width: 100%;
  /* Touch gesture: solo permite scroll vertical; el swipe horizontal
     lo consume el carrusel sin arrastrar la página */
  touch-action: pan-y;
  background:
    radial-gradient(ellipse 110% 70% at 50% 55%,
      oklch(13% 0.055 248) 0%,
      oklch(6%  0.03  248) 100%);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 5rem 0 4rem;
  user-select: none;
}

.prj-carousel-section::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    oklch(52% 0.22 145 / 0.35) 50%,
    transparent 100%
  );
  pointer-events: none;
}

/* ─── Stage / section header ──────────────────────────────────── */
.prj-stage-header {
  text-align: center;
  margin-bottom: 1.8rem;
  position: relative;
  z-index: 10;
}

.prj-stage-eyebrow {
  font-size: 0.71rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: oklch(52% 0.22 145);
  margin-bottom: 0.55rem;
}

.prj-stage-title {
  font-family: 'Sora', sans-serif;
  font-size: clamp(1.9rem, 3.2vw, 2.8rem);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.03em;
  margin: 0;
  line-height: 1.1;
}

/* ─── Scene wrapper + arrows ──────────────────────────────────── */
.prj-scene-wrap {
  position: relative;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ─── 3D Perspective scene ────────────────────────────────────── */
.prj-scene {
  position: relative;
  width: 100%;
  height: 580px;
  perspective: 1300px;
  perspective-origin: 50% 48%;
}

/* Full-page stage: taller scene + larger cards */
.prj-stage .prj-scene {
  height: 700px;
  perspective: 1400px;
}

/* Ambient glow tracks center card */
.prj-glow {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 420px;
  height: 420px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle,
    oklch(52% 0.22 145 / 0.14) 0%,
    oklch(52% 0.22 145 / 0.04) 55%,
    transparent 75%
  );
  pointer-events: none;
  z-index: 0;
}

.prj-stage .prj-glow {
  width: 520px;
  height: 520px;
}

/* ─── Individual card ─────────────────────────────────────────── */
.prj-card {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 360px;
  height: 510px;
  transform-origin: center center;
  will-change: transform, opacity;
  cursor: pointer;
  opacity: 0; /* JS animates in */
}

/* Full-page stage: larger cards */
.prj-stage .prj-card {
  width: 420px;
  height: 600px;
}

.prj-face {
  width: 100%;
  height: 100%;
  border-radius: 16px;
  overflow: hidden;
  position: relative;
  box-shadow:
    0 0 0 1px oklch(100% 0 0 / 0.07),
    0 20px 60px oklch(0% 0 0 / 0.55),
    0 42px 120px oklch(0% 0 0 / 0.28);
  backface-visibility: hidden;
  transform: translateZ(0);
  transition: box-shadow 0.35s ease;
}

/* Project photo */
.prj-face > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
  transition: transform 0.55s ease;
}

.prj-card--active .prj-face > img {
  transform: scale(1.05);
}

/* Bottom-up gradient overlay */
.prj-face::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    oklch(8% 0.04 248 / 0.08)  0%,
    oklch(8% 0.04 248 / 0.0)   32%,
    oklch(8% 0.04 248 / 0.52)  58%,
    oklch(8% 0.04 248 / 0.96) 100%
  );
  z-index: 1;
  transition: background 0.35s ease;
}

.prj-card--active .prj-face::before {
  background: linear-gradient(
    180deg,
    oklch(8% 0.04 248 / 0.12)  0%,
    oklch(8% 0.04 248 / 0.0)   28%,
    oklch(8% 0.04 248 / 0.62)  56%,
    oklch(8% 0.04 248 / 0.98) 100%
  );
}

/* Active card: animated glow border */
@keyframes prj-card-glow-pulse {
  0%, 100% {
    box-shadow:
      0 0 0 2px oklch(65% 0.26 145 / 0.85),
      0 24px 80px oklch(0% 0 0 / 0.65),
      0 0  50px oklch(52% 0.22 145 / 0.22),
      0 0 100px oklch(52% 0.22 145 / 0.08);
  }
  50% {
    box-shadow:
      0 0 0 2px oklch(76% 0.28 148 / 1),
      0 24px 80px oklch(0% 0 0 / 0.65),
      0 0  70px oklch(52% 0.22 145 / 0.38),
      0 0 130px oklch(52% 0.22 145 / 0.15);
  }
}

.prj-card--active .prj-face {
  animation: prj-card-glow-pulse 2.2s ease-in-out infinite;
}

/* ─── Card content ────────────────────────────────────────────── */
.prj-card-inner {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem 1.6rem 1.8rem;
  z-index: 2;
}

/* Category badge */
.prj-badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.26rem 0.72rem;
  border-radius: 100px;
  margin-bottom: 0.68rem;
}

.prj-badge--civil {
  background: oklch(52% 0.22 145 / 0.22);
  color: oklch(78% 0.22 145);
  border: 1px solid oklch(52% 0.22 145 / 0.46);
}
.prj-badge--ambiental {
  background: oklch(52% 0.20 155 / 0.22);
  color: oklch(78% 0.22 155);
  border: 1px solid oklch(52% 0.20 155 / 0.46);
}
.prj-badge--mantenimiento {
  background: oklch(50% 0.16 230 / 0.22);
  color: oklch(78% 0.16 230);
  border: 1px solid oklch(50% 0.16 230 / 0.46);
}
.prj-badge--consultoria {
  background: oklch(52% 0.18 285 / 0.22);
  color: oklch(78% 0.18 285);
  border: 1px solid oklch(52% 0.18 285 / 0.46);
}

/* Card title — always visible */
.prj-card-title {
  font-family: 'Sora', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
  margin: 0 0 0.6rem;
  letter-spacing: -0.02em;
}

/* "Ver detalles" button — hidden on side cards, revealed on active */
.prj-details-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.54rem 1.2rem;
  background: transparent;
  color: #fff;
  border: 1px solid oklch(100% 0 0 / 0.34);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 100px;
  cursor: pointer;
  letter-spacing: 0.028em;
  margin-top: 0.8rem;
  opacity: 0;
  transform: translateY(10px);
  transition:
    opacity  0.3s ease,
    transform 0.3s ease,
    background 0.22s ease,
    border-color 0.22s ease,
    box-shadow 0.22s ease;
  pointer-events: none;
}

.prj-card--active .prj-details-btn {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
  transition-delay: 0.09s;
}

.prj-details-btn:hover {
  background: oklch(52% 0.22 145);
  border-color: oklch(52% 0.22 145);
  box-shadow: 0 4px 18px oklch(52% 0.22 145 / 0.44);
}

.prj-card-desc {
  font-size: 0.83rem;
  color: oklch(82% 0.025 232);
  line-height: 1.65;
  margin: 0 0 0.78rem;
}

.prj-card-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.75rem;
  color: oklch(58% 0.05 232);
  margin-bottom: 1rem;
}

.prj-meta-item {
  display: flex;
  align-items: center;
  gap: 0.28rem;
}

/* CTA button on card */
.prj-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  padding: 0.52rem 1.15rem;
  background: oklch(52% 0.22 145);
  color: #fff;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 0.79rem;
  font-weight: 600;
  border-radius: 100px;
  text-decoration: none;
  letter-spacing: 0.025em;
  box-shadow: 0 4px 18px oklch(52% 0.22 145 / 0.42);
  transition:
    background 0.22s ease,
    box-shadow 0.22s ease,
    opacity 0.3s ease,
    transform 0.3s ease;
}

/* ─── Project detail modal ────────────────────────────────────── */
.prj-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.32s ease;
}

.prj-modal.open {
  pointer-events: auto;
  opacity: 1;
}

.prj-modal-backdrop {
  position: absolute;
  inset: 0;
  background: oklch(5% 0.028 248 / 0.82);
  backdrop-filter: blur(7px);
  -webkit-backdrop-filter: blur(7px);
  cursor: pointer;
}

.prj-modal-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 740px;
  background: oklch(11% 0.045 248);
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid oklch(100% 0 0 / 0.09);
  box-shadow:
    0 0 0 1px oklch(52% 0.22 145 / 0.08),
    0 40px 120px oklch(0% 0 0 / 0.65),
    0 0 80px oklch(52% 0.22 145 / 0.06);
  display: flex;
  flex-direction: row;
  max-height: 90vh;
  transform: scale(0.86) translateY(28px);
  transition: transform 0.42s cubic-bezier(0.34, 1.52, 0.64, 1);
}

.prj-modal.open .prj-modal-inner {
  transform: scale(1) translateY(0);
}

.prj-modal-img-wrap {
  width: 42%;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}

.prj-modal-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.prj-modal-img-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 60%,
    oklch(11% 0.045 248) 100%
  );
  pointer-events: none;
}

.prj-modal-body {
  flex: 1;
  padding: 2.2rem 2rem 2rem 1.6rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.prj-modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: 10;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid oklch(100% 0 0 / 0.14);
  background: oklch(100% 0 0 / 0.06);
  color: oklch(75% 0.025 232);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.22s ease, color 0.22s ease, border-color 0.22s ease;
  flex-shrink: 0;
}

.prj-modal-close:hover {
  background: oklch(52% 0.22 145 / 0.24);
  border-color: oklch(52% 0.22 145 / 0.5);
  color: #fff;
}

.prj-modal-badge {
  margin-bottom: 0;
  align-self: flex-start; /* prevent badge from stretching full width */
}

.prj-modal-title {
  font-family: 'Sora', sans-serif;
  font-size: clamp(1.22rem, 2.2vw, 1.55rem);
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.028em;
  line-height: 1.2;
  margin: 0;
}

.prj-modal-desc {
  font-size: 0.88rem;
  color: oklch(72% 0.025 232);
  line-height: 1.72;
  margin: 0;
}

.prj-modal-meta-row {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.prj-modal-cta {
  align-self: flex-start;
  margin-top: auto;
}

/* Divider line above CTA */
.prj-modal-divider {
  height: 1px;
  background: oklch(100% 0 0 / 0.07);
  margin: 0.2rem 0;
}

@media (max-width: 620px) {
  .prj-modal { padding: 1rem; }
  .prj-modal-inner {
    flex-direction: column;
    max-height: 88vh;
  }
  .prj-modal-img-wrap {
    width: 100%;
    height: 200px;
  }
  .prj-modal-img-wrap::after {
    background: linear-gradient(
      180deg,
      transparent 55%,
      oklch(11% 0.045 248) 100%
    );
  }
  .prj-modal-body {
    padding: 1.4rem 1.4rem 1.6rem;
  }
}

/* ─── Mobile navigation arrows ────────────────────────────────── */
.prj-arrow {
  display: none;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid oklch(100% 0 0 / 0.16);
  background: oklch(100% 0 0 / 0.07);
  backdrop-filter: blur(10px);
  color: #fff;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  z-index: 20;
  transition: background 0.22s, border-color 0.22s, transform 0.22s;
}

.prj-arrow:hover {
  background: oklch(52% 0.22 145 / 0.28);
  border-color: oklch(52% 0.22 145 / 0.52);
  transform: translateY(-50%) scale(1.06);
}

.prj-arrow:active {
  transform: translateY(-50%) scale(0.95);
}

.prj-arrow--prev { left: 1.2rem; }
.prj-arrow--next { right: 1.2rem; }

@media (pointer: coarse) {
  .prj-arrow { display: flex; }
}

/* ─── Dot indicators ──────────────────────────────────────────── */
.prj-dots {
  display: flex;
  align-items: center;
  gap: 0.42rem;
  margin-top: 2.2rem;
  position: relative;
  z-index: 10;
}

.prj-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  border: none;
  background: oklch(100% 0 0 / 0.22);
  cursor: pointer;
  transition: all 0.28s ease;
  padding: 0;
  flex-shrink: 0;
}

.prj-dot.active {
  background: oklch(52% 0.22 145);
  width: 26px;
  border-radius: 3px;
  box-shadow: 0 0 10px oklch(52% 0.22 145 / 0.65);
}

/* ─── Cursor hint ─────────────────────────────────────────────── */
.prj-hint {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.73rem;
  color: oklch(46% 0.04 232);
  margin-top: 1.1rem;
  letter-spacing: 0.06em;
  position: relative;
  z-index: 10;
  transition: opacity 0.55s ease, transform 0.55s ease;
  pointer-events: none;
}

.prj-hint.dismissed {
  opacity: 0;
  transform: translateY(4px);
}

@media (pointer: coarse) {
  .prj-hint { display: none; }
}

/* ─── Dark nav override while stage is in viewport ────────────── */
.nav.scrolled.prj-nav-dark {
  background: oklch(10% 0.05 248 / 0.93) !important;
  border-bottom-color: oklch(100% 0 0 / 0.08) !important;
}

.nav.scrolled.prj-nav-dark .nav-links a {
  color: oklch(80% 0.04 232);
}

.nav.scrolled.prj-nav-dark .nav-links a:hover,
.nav.scrolled.prj-nav-dark .nav-links a.active {
  color: oklch(72% 0.22 148);
}

/* ─── "Ver todos" link below index embed carousel ─────────────── */
.prj-carousel-footer {
  margin-top: 2.5rem;
  position: relative;
  z-index: 10;
}

/* ─── CTA section (below stage on proyectos.html) ─────────────── */
.prj-cta {
  padding: 6rem 2rem;
  text-align: center;
  background: var(--bg-0, #f7faf8);
}

.prj-cta-inner {
  max-width: 560px;
  margin: 0 auto;
}

.prj-cta h3 {
  font-family: 'Sora', sans-serif;
  font-size: clamp(1.55rem, 2.6vw, 2.1rem);
  font-weight: 800;
  color: var(--n1, #0d1f1a);
  margin: 0 0 0.85rem;
  letter-spacing: -0.025em;
}

.prj-cta p {
  color: var(--text-2, #5a6f68);
  font-size: 1.02rem;
  margin: 0 0 1.9rem;
  line-height: 1.72;
}

/* ─── Responsive ──────────────────────────────────────────────── */

/* Tablet */
@media (max-width: 960px) {
  .prj-stage                { padding: 4.5rem 0 3rem; min-height: 90vh; }
  .prj-stage .prj-scene     { height: 620px; perspective: 1200px; }
  .prj-stage .prj-card      { width: 370px; height: 528px; }
  .prj-card-title           { font-size: 1.08rem; }
  .prj-card-desc            { font-size: 0.8rem; }
}

/* Mobile */
@media (max-width: 640px) {
  /* overflow:visible + matching index dimensions = same side-card peek
     behaviour as the index carousel. Index rules (.prj-card / .prj-scene)
     are NOT modified — we only neutralise .prj-stage's own overrides. */
  .prj-stage                { padding: 4rem 0 2.5rem; min-height: 88vh; overflow: visible; }
  .prj-carousel-section     { padding: 4rem 0 3rem; }
  .prj-stage-title          { font-size: 1.65rem; }
  .prj-stage .prj-scene     { height: 460px; perspective: 900px; }
  .prj-stage .prj-card      { width: 258px; height: 368px; }
  .prj-scene                { height: 500px; perspective: 900px; }
  .prj-card                 { width: 300px; height: 428px; }
  .prj-arrow--prev          { left: 0.4rem; }
  .prj-arrow--next          { right: 0.4rem; }
  .prj-cta                  { padding: 4rem 1.5rem; }
}

/* Very small */
@media (max-width: 380px) {
  .prj-stage .prj-card { width: 232px; height: 332px; }
  .prj-card            { width: 268px; height: 385px; }
}