/* ============================================================
   SCIENCE THEME — آبی نئون، شش‌ضلعی، فضای آزمایشگاهی
   ============================================================ */

html.science {
  --bg: #04081a;
  --bg-2: #0a1230;
  --text: #e0f0ff;
  --dim: #7a90b8;
  --glass-bg: rgba(0, 212, 255, 0.05);
  --glass-bd: rgba(0, 212, 255, 0.15);
  --glass-hi: rgba(0, 212, 255, 0.35);
  --c1: #00d4ff;
  --c2: #06b6d4;
  --c3: #8b5cf6;
  --c4: #10b981;
  --c5: #00d4ff;
  --c6: #6366f1;
  --nav-bg: rgba(4, 8, 26, 0.7);
}

/* ===== الگوی شش‌ضلعی پس‌زمینه ===== */
html.science body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 60 60'%3E%3Cpath d='M30 0 L60 17 L60 43 L30 60 L0 43 L0 17 Z' fill='none' stroke='rgba(0,212,255,0.07)' stroke-width='1'/%3E%3C/svg%3E");
  background-size: 60px 60px;
  pointer-events: none;
  z-index: -1;
  opacity: 0.7;
}

/* ===== درخشش ملایم ===== */
html.science body::after {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(0, 212, 255, 0.08), transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(139, 92, 246, 0.06), transparent 50%);
  pointer-events: none;
  z-index: -1;
}

/* ===== لوگو و کارت‌ها ===== */
html.science .brand-logo {
  box-shadow: 0 0 15px rgba(0, 212, 255, 0.6);
}
html.science .hero-logo {
  box-shadow:
    0 0 30px rgba(0, 212, 255, 0.5),
    0 0 60px rgba(6, 182, 212, 0.25);
}
html.science .card:hover {
  background: rgba(0, 212, 255, 0.08);
  border-color: rgba(0, 212, 255, 0.4);
  box-shadow: 0 0 25px rgba(0, 212, 255, 0.25);
}

/* ===== تیتر نئونی ===== */
html.science .hero-title {
  background: linear-gradient(135deg, #00d4ff 0%, #06b6d4 50%, #8b5cf6 100%);
  -webkit-background-clip: text;
          background-clip: text;
  filter: drop-shadow(0 0 15px rgba(0, 212, 255, 0.5));
}

/* ===== دکمه‌های آبی ===== */
html.science .btn-primary {
  background: linear-gradient(135deg, #00d4ff, #06b6d4 60%, #8b5cf6);
  box-shadow: 0 0 15px rgba(0, 212, 255, 0.4);
}
html.science .btn-primary:hover {
  box-shadow: 0 0 25px rgba(0, 212, 255, 0.6);
}

/* ============================================================
   SCIENCE ENTRY CARD (تو index.html)
   ============================================================ */

.science-entry {
  display: block;
  padding: 32px;
  border-radius: 24px;
  background: linear-gradient(135deg,
    rgba(0, 212, 255, 0.10),
    rgba(6, 182, 212, 0.10),
    rgba(139, 92, 246, 0.10)
  );
  border: 1px solid rgba(0, 212, 255, 0.25);
  transition: transform .4s cubic-bezier(.2,.7,.2,1),
              box-shadow .4s, border-color .4s;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  margin-top: 20px;
}

.science-entry::before {
  content: '';
  position: absolute;
  inset: -2px;
  background: linear-gradient(135deg, #00d4ff, #06b6d4, #8b5cf6, #06b6d4, #00d4ff);
  background-size: 300% 300%;
  border-radius: inherit;
  z-index: -1;
  opacity: 0;
  transition: opacity .4s;
  animation: scienceGradientShift 4s ease infinite;
}

.science-entry:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 212, 255, 0.5);
  box-shadow:
    0 20px 60px rgba(0, 212, 255, 0.25),
    0 0 40px rgba(139, 92, 246, 0.15);
}
.science-entry:hover::before { opacity: 1; }

.science-entry-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  position: relative;
  z-index: 1;
}

.science-entry-logo {
  width: 90px;
  height: 90px;
  border-radius: 22px;
  background: #fff;
  padding: 10px;
  object-fit: contain;
  box-shadow:
    0 0 30px rgba(0, 212, 255, 0.5),
    0 0 60px rgba(6, 182, 212, 0.3);
  flex-shrink: 0;
  transition: transform .4s;
  animation: scienceLogoFloat 4s ease-in-out infinite;
}
.science-entry:hover .science-entry-logo {
  transform: scale(1.1) rotate(6deg);
}

.science-entry-text {
  flex: 1;
  min-width: 0;
}

.science-entry-text h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 6px;
  background: linear-gradient(135deg, #00d4ff, #06b6d4, #8b5cf6);
  -webkit-background-clip: text;
          background-clip: text;
  color: transparent;
  letter-spacing: 1px;
}

.science-entry-text p {
  color: var(--dim);
  font-size: 14px;
}

.science-entry-arrow {
  font-size: 32px;
  color: #00d4ff;
  flex-shrink: 0;
  transition: transform .4s;
  text-shadow: 0 0 20px #00d4ff;
}
html[dir="rtl"] .science-entry-arrow {
  transform: scaleX(-1);
}
.science-entry:hover .science-entry-arrow {
  transform: translateX(8px);
}
html[dir="rtl"] .science-entry:hover .science-entry-arrow {
  transform: scaleX(-1) translateX(8px);
}

@media (max-width: 600px) {
  .science-entry-inner {
    flex-direction: column;
    text-align: center;
    gap: 16px;
  }
  .science-entry-arrow {
    transform: rotate(90deg);
  }
  html[dir="rtl"] .science-entry-arrow {
    transform: rotate(90deg) scaleX(-1);
  }
  .science-entry-text h3 { font-size: 20px; }
}

/* ============================================================
   Coming Soon (science.html)
   ============================================================ */

.coming-soon {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 20px;
  gap: 22px;
}

.coming-soon h2 {
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 700;
  letter-spacing: 6px;
  background: linear-gradient(135deg, #00d4ff 0%, #06b6d4 50%, #8b5cf6 100%);
  -webkit-background-clip: text;
          background-clip: text;
  color: transparent;
}

.coming-soon p {
  color: var(--dim);
  font-size: 16px;
  max-width: 480px;
}

.coming-soon .orbital {
  width: 160px;
  height: 160px;
  position: relative;
  margin-bottom: 20px;
}

.coming-soon .orbital::before,
.coming-soon .orbital::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid rgba(0, 212, 255, 0.4);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}
.coming-soon .orbital::before {
  animation: orbitalSpin 8s linear infinite;
}
.coming-soon .orbital::after {
  animation: orbitalSpin 12s linear infinite reverse;
  border-color: rgba(139, 92, 246, 0.4);
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
}

.coming-soon .nucleus {
  position: absolute;
  top: 50%; left: 50%;
  width: 24px; height: 24px;
  margin: -12px 0 0 -12px;
  border-radius: 50%;
  background: radial-gradient(circle, #00d4ff, #06b6d4);
  box-shadow: 0 0 30px #00d4ff, 0 0 60px rgba(0, 212, 255, 0.5);
  animation: nucleusPulse 2s ease-in-out infinite;
}

/* ===== Preloader science ===== */
html.science .preloader-text {
  background: linear-gradient(90deg, #fff 0%, #00d4ff 40%, #8b5cf6 60%, #fff 100%);
  background-size: 200% 100%;
  -webkit-background-clip: text;
          background-clip: text;
}
html.science .preloader-bar span {
  background: linear-gradient(90deg, #00d4ff, #06b6d4, #8b5cf6);
}

/* ============================================================
   PAGE TRANSITION variant
   ============================================================ */

.pt-overlay.pt-science .pt-ring-1 {
  border-color: #00d4ff;
  box-shadow: 0 0 25px #00d4ff;
}
.pt-overlay.pt-science .pt-ring-2 {
  border-color: #06b6d4;
  box-shadow: 0 0 25px #06b6d4;
}
.pt-overlay.pt-science .pt-ring-3 {
  border-color: #8b5cf6;
  box-shadow: 0 0 25px #8b5cf6;
}
.pt-overlay.pt-science .pt-scanline {
  background: linear-gradient(90deg, transparent, #00d4ff, #8b5cf6, #06b6d4, transparent);
  box-shadow: 0 0 15px #00d4ff;
}
.pt-overlay.pt-science .pt-text {
  background: linear-gradient(90deg, #00d4ff, #06b6d4, #8b5cf6, #06b6d4, #00d4ff);
  background-size: 300% 100%;
  -webkit-background-clip: text;
          background-clip: text;
}
.pt-overlay.pt-science .pt-logo {
  filter: drop-shadow(0 0 25px #00d4ff);
}

/* ============================================================
   Keyframes
   ============================================================ */

@keyframes scienceGradientShift {
  0%, 100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}

@keyframes scienceLogoFloat {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}

@keyframes orbitalSpin {
  to { transform: rotate(360deg); }
}

@keyframes nucleusPulse {
  0%, 100% { transform: scale(1); box-shadow: 0 0 30px #00d4ff, 0 0 60px rgba(0, 212, 255, 0.5); }
  50%      { transform: scale(1.15); box-shadow: 0 0 40px #00d4ff, 0 0 80px rgba(0, 212, 255, 0.7); }
}

/* ============================================================
   Performance (موبایل)
   ============================================================ */
@media (max-width: 768px), (hover: none) {
  html.science body::before { opacity: .4; }
  html.science body::after  { display: none; }
  html.science .hero-title  { filter: none; }
  html.science .brand-logo,
  html.science .hero-logo {
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.4);
  }
}

@media (prefers-reduced-motion: reduce) {
  html.science body::before { display: none; }
  .coming-soon .orbital::before,
  .coming-soon .orbital::after,
  .coming-soon .nucleus { animation: none !important; }
}