/* ============================================================
   VISUAL UPGRADES — Aurora, Holographic, Mesh, Neumorphism,
   Layered Cards, Mobile Menu, Scroll Animations, Gradient Text,
   Ripple Effect
   ============================================================ */

/* ============================================================
   1. AURORA BACKGROUND (شفق قطبی)
   ============================================================ */
.aurora-bg {
  position: fixed;
  inset: 0;
  z-index: -3;
  pointer-events: none;
  overflow: hidden;
  opacity: 0.7;
  transition: opacity 1s;
}
html.light .aurora-bg { opacity: 0.25; }

.aurora-bg::before,
.aurora-bg::after {
  content: '';
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(ellipse 60% 40% at 20% 30%, rgba(120, 80, 255, 0.4), transparent 60%),
    radial-gradient(ellipse 50% 50% at 80% 20%, rgba(0, 200, 255, 0.35), transparent 60%),
    radial-gradient(ellipse 70% 40% at 50% 80%, rgba(255, 80, 180, 0.3), transparent 60%),
    radial-gradient(ellipse 40% 60% at 10% 90%, rgba(80, 255, 180, 0.25), transparent 60%);
  filter: blur(60px);
  animation: auroraFlow 30s ease-in-out infinite;
}

.aurora-bg::after {
  background:
    radial-gradient(ellipse 50% 40% at 70% 60%, rgba(255, 200, 80, 0.25), transparent 60%),
    radial-gradient(ellipse 60% 30% at 30% 10%, rgba(180, 80, 255, 0.3), transparent 60%),
    radial-gradient(ellipse 40% 50% at 90% 80%, rgba(80, 220, 255, 0.25), transparent 60%);
  animation-delay: -15s;
  animation-duration: 40s;
  mix-blend-mode: screen;
}

@keyframes auroraFlow {
  0%, 100% { transform: translate(0, 0) rotate(0deg) scale(1); }
  25%      { transform: translate(5%, -3%) rotate(8deg) scale(1.05); }
  50%      { transform: translate(-4%, 5%) rotate(-5deg) scale(0.98); }
  75%      { transform: translate(3%, -4%) rotate(3deg) scale(1.03); }
}

/* ============================================================
   2. GRADIENT MESH BACKGROUND
   ============================================================ */
.mesh-bg {
  position: fixed;
  inset: 0;
  z-index: -4;
  pointer-events: none;
  background:
    radial-gradient(circle at 15% 25%, rgba(255, 77, 77, 0.15), transparent 40%),
    radial-gradient(circle at 85% 15%, rgba(34, 211, 238, 0.15), transparent 40%),
    radial-gradient(circle at 50% 90%, rgba(255, 201, 60, 0.12), transparent 45%),
    radial-gradient(circle at 25% 75%, rgba(176, 38, 255, 0.1), transparent 40%),
    radial-gradient(circle at 90% 65%, rgba(74, 222, 128, 0.1), transparent 40%);
  animation: meshDrift 25s ease-in-out infinite;
}

@keyframes meshDrift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%      { transform: translate(-2%, 2%) scale(1.05); }
  66%      { transform: translate(2%, -2%) scale(0.98); }
}

/* ============================================================
   3. HOLOGRAPHIC CARDS (کارت‌های هولوگرافیک)
   ============================================================ */
.holo-card {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.holo-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    135deg,
    transparent 0%,
    transparent 30%,
    rgba(255, 255, 255, 0.15) 45%,
    rgba(255, 200, 100, 0.2) 50%,
    rgba(255, 100, 200, 0.15) 55%,
    rgba(100, 200, 255, 0.15) 60%,
    transparent 75%,
    transparent 100%
  );
  background-size: 300% 300%;
  background-position: var(--holo-x, 50%) var(--holo-y, 50%);
  opacity: 0;
  transition: opacity .35s;
  pointer-events: none;
  z-index: 1;
  mix-blend-mode: screen;
}

.holo-card:hover::before,
.holo-card.holo-active::before {
  opacity: 1;
}

.holo-card::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  background: conic-gradient(
    from var(--holo-angle, 0deg),
    rgba(255, 77, 77, 0.4),
    rgba(255, 201, 60, 0.4),
    rgba(74, 222, 128, 0.4),
    rgba(34, 211, 238, 0.4),
    rgba(59, 130, 246, 0.4),
    rgba(176, 38, 255, 0.4),
    rgba(255, 77, 77, 0.4)
  );
  opacity: 0;
  transition: opacity .35s;
  z-index: -1;
  filter: blur(8px);
  pointer-events: none;
}
.holo-card:hover::after,
.holo-card.holo-active::after {
  opacity: .7;
}

/* ============================================================
   4. NEUMORPHISM (نئومورفیسم)
   ============================================================ */
.neu-card {
  background: var(--bg-2);
  border-radius: 22px;
  box-shadow:
    8px 8px 20px rgba(0, 0, 0, 0.4),
    -6px -6px 16px rgba(255, 255, 255, 0.03);
  border: none;
  transition: box-shadow .3s, transform .3s;
}
.neu-card:hover {
  box-shadow:
    4px 4px 12px rgba(0, 0, 0, 0.5),
    -2px -2px 8px rgba(255, 255, 255, 0.04);
  transform: translateY(-2px);
}

html.light .neu-card {
  background: #e8e8ee;
  box-shadow:
    8px 8px 20px rgba(0, 0, 0, 0.1),
    -6px -6px 16px rgba(255, 255, 255, 0.9);
}
html.light .neu-card:hover {
  box-shadow:
    4px 4px 12px rgba(0, 0, 0, 0.12),
    -2px -2px 8px rgba(255, 255, 255, 1);
}

.neu-btn {
  background: var(--bg-2);
  border-radius: 999px;
  box-shadow:
    4px 4px 10px rgba(0, 0, 0, 0.35),
    -3px -3px 8px rgba(255, 255, 255, 0.03);
  border: none;
  color: var(--text);
  padding: 12px 24px;
  font-weight: 600;
  transition: all .2s;
}
.neu-btn:active {
  box-shadow:
    inset 3px 3px 8px rgba(0, 0, 0, 0.4),
    inset -2px -2px 6px rgba(255, 255, 255, 0.04);
  transform: translateY(1px);
}

/* ============================================================
   5. LAYERED CARDS (کارت‌های لایه‌ای)
   ============================================================ */
.layered-card {
  position: relative;
  isolation: isolate;
}

.layered-card::before,
.layered-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  transition: transform .4s cubic-bezier(.2,.7,.2,1);
  z-index: -1;
  border: 1px solid var(--glass-bd);
}
.layered-card::before {
  background: linear-gradient(135deg, rgba(255, 77, 77, 0.15), rgba(255, 140, 66, 0.15));
  transform: rotate(-2deg) translate(-6px, 6px);
}
.layered-card::after {
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.15), rgba(59, 130, 246, 0.15));
  transform: rotate(2deg) translate(6px, 6px);
}

.layered-card:hover::before {
  transform: rotate(-5deg) translate(-10px, 10px);
}
.layered-card:hover::after {
  transform: rotate(5deg) translate(10px, 10px);
}

/* ============================================================
   6. SCROLL-DRIVEN ANIMATIONS
   ============================================================ */
.scroll-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1s cubic-bezier(.2,.7,.2,1),
              transform 1s cubic-bezier(.2,.7,.2,1);
}
.scroll-reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

.scroll-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 1s cubic-bezier(.2,.7,.2,1),
              transform 1s cubic-bezier(.2,.7,.2,1);
}
.scroll-scale.in-view {
  opacity: 1;
  transform: scale(1);
}

.scroll-slide-left {
  opacity: 0;
  transform: translateX(-60px);
  transition: opacity 1s cubic-bezier(.2,.7,.2,1),
              transform 1s cubic-bezier(.2,.7,.2,1);
}
.scroll-slide-left.in-view {
  opacity: 1;
  transform: translateX(0);
}

.scroll-slide-right {
  opacity: 0;
  transform: translateX(60px);
  transition: opacity 1s cubic-bezier(.2,.7,.2,1),
              transform 1s cubic-bezier(.2,.7,.2,1);
}
.scroll-slide-right.in-view {
  opacity: 1;
  transform: translateX(0);
}

/* ============================================================
   7. ANIMATED GRADIENT TEXT
   ============================================================ */
.gradient-text {
  background: linear-gradient(
    90deg,
    var(--c1) 0%,
    var(--c2) 20%,
    var(--c3) 40%,
    var(--c4) 60%,
    var(--c5) 80%,
    var(--c1) 100%
  );
  background-size: 300% 100%;
  -webkit-background-clip: text;
          background-clip: text;
  color: transparent;
  animation: gradientFlow 8s linear infinite;
}

@keyframes gradientFlow {
  0%   { background-position: 0% 50%; }
  100% { background-position: 300% 50%; }
}

/* Hero title gets it automatically */
.hero-title {
  animation: gradientFlow 10s linear infinite !important;
  background-size: 300% 100% !important;
}

/* ============================================================
   8. RIPPLE EFFECT
   ============================================================ */
.ripple-host {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.ripple {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0) 70%);
  transform: scale(0);
  animation: rippleAnim .7s cubic-bezier(.2,.7,.2,1) forwards;
  pointer-events: none;
  z-index: 0;
}
html.light .ripple {
  background: radial-gradient(circle, rgba(0, 0, 0, 0.15), rgba(0, 0, 0, 0) 70%);
}

@keyframes rippleAnim {
  to {
    transform: scale(3);
    opacity: 0;
  }
}

/* ============================================================
   9. MOBILE FULL-SCREEN MENU
   ============================================================ */
.mobile-burger {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-bd);
  position: relative;
  z-index: 200;
}
.mobile-burger span {
  position: absolute;
  left: 11px;
  right: 11px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all .35s cubic-bezier(.2,.7,.2,1);
}
.mobile-burger span:nth-child(1) { top: 14px; }
.mobile-burger span:nth-child(2) { top: 20px; }
.mobile-burger span:nth-child(3) { top: 26px; }

.mobile-burger.active span:nth-child(1) {
  top: 20px;
  transform: rotate(45deg);
}
.mobile-burger.active span:nth-child(2) {
  opacity: 0;
  transform: translateX(20px);
}
.mobile-burger.active span:nth-child(3) {
  top: 20px;
  transform: rotate(-45deg);
}

@media (max-width: 940px) {
  .mobile-burger { display: block; }
}

/* Full-screen overlay */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 150;
  background: rgba(7, 7, 11, 0.92);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 40px 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity .5s, visibility .5s;
}
html.light .mobile-menu {
  background: rgba(242, 242, 247, 0.95);
}

.mobile-menu.open {
  opacity: 1;
  visibility: visible;
}

.mobile-menu::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(255, 77, 77, 0.15), transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(34, 211, 238, 0.15), transparent 50%),
    radial-gradient(circle at 50% 90%, rgba(255, 201, 60, 0.1), transparent 50%);
  pointer-events: none;
  z-index: -1;
}

.mobile-menu a {
  position: relative;
  display: block;
  padding: 16px 32px;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text);
  text-transform: uppercase;
  border-radius: 16px;
  transition: all .3s cubic-bezier(.2,.7,.2,1);
  transform: translateY(20px);
  opacity: 0;
  overflow: hidden;
}

.mobile-menu.open a {
  transform: translateY(0);
  opacity: 1;
}

.mobile-menu.open a:nth-child(1) { transition-delay: .1s; }
.mobile-menu.open a:nth-child(2) { transition-delay: .18s; }
.mobile-menu.open a:nth-child(3) { transition-delay: .26s; }
.mobile-menu.open a:nth-child(4) { transition-delay: .34s; }
.mobile-menu.open a:nth-child(5) { transition-delay: .42s; }
.mobile-menu.open a:nth-child(6) { transition-delay: .50s; }
.mobile-menu.open a:nth-child(7) { transition-delay: .58s; }
.mobile-menu.open a:nth-child(8) { transition-delay: .66s; }

.mobile-menu a:hover,
.mobile-menu a:active {
  background: linear-gradient(135deg, rgba(255, 77, 77, 0.15), rgba(34, 211, 238, 0.15));
  transform: translateY(-2px) scale(1.03);
}

.mobile-menu a::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%) scaleX(0);
  width: 4px;
  height: 60%;
  background: linear-gradient(180deg, var(--c1), var(--c2));
  border-radius: 2px;
  transform-origin: top;
  transition: transform .3s;
}
.mobile-menu a:hover::before { transform: translateY(-50%) scaleX(1); }

/* Language switch inside mobile menu */
.mobile-menu .mobile-lang {
  display: flex;
  gap: 6px;
  margin-top: 24px;
  padding: 5px;
  border-radius: 14px;
  background: rgba(0, 0, 0, 0.3);
  opacity: 0;
  transform: translateY(20px);
  transition: all .5s .7s;
}
.mobile-menu.open .mobile-lang {
  opacity: 1;
  transform: translateY(0);
}
.mobile-menu .mobile-lang button {
  padding: 10px 16px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 700;
  color: var(--dim);
  transition: .2s;
}
.mobile-menu .mobile-lang button.active {
  background: linear-gradient(135deg, var(--c1), var(--c2));
  color: #fff;
}

/* ============================================================
   10. MOBILE OPTIMIZATIONS
   ============================================================ */
@media (max-width: 768px) {
  /* حذف افکت‌های سنگین روی موبایل */
  .aurora-bg {
    opacity: 0.4;
  }
  .aurora-bg::before,
  .aurora-bg::after {
    filter: blur(80px);
  }

  /* Holo cards سبک‌تر */
  .holo-card::after {
    display: none;
  }

  /* کارت‌های لایه‌ای سبک‌تر */
  .layered-card::before,
  .layered-card::after {
    transform: rotate(-1deg) translate(-3px, 3px);
  }
  .layered-card:hover::before,
  .layered-card:hover::after {
    transform: rotate(-2deg) translate(-5px, 5px);
  }
  .layered-card:hover::after {
    transform: rotate(2deg) translate(5px, 5px);
  }
}

/* ============================================================
   11. NAV — تغییر برای موبایل (نویگیشن باقی می‌مونه ولی burger)
   ============================================================ */
@media (max-width: 940px) {
  .nav {
    padding: 8px 14px;
  }
  .nav-links { display: none !important; }
  .nav-right .lang-switch,
  .nav-right .theme-toggle { display: none !important; }
}

/* ============================================================
   12. Safe Area (iPhone notch)
   ============================================================ */
@supports (padding: env(safe-area-inset-top)) {
  .nav {
    top: calc(18px + env(safe-area-inset-top));
  }
  .mobile-menu {
    padding-top: calc(40px + env(safe-area-inset-top));
    padding-bottom: calc(40px + env(safe-area-inset-bottom));
  }
  .footer {
    padding-bottom: calc(40px + env(safe-area-inset-bottom));
  }
}

/* ============================================================
   13. Tap Highlight حذف
   ============================================================ */
* {
  -webkit-tap-highlight-color: transparent;
}

/* ============================================================
   14. Reduce motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  .aurora-bg::before,
  .aurora-bg::after,
  .mesh-bg,
  .gradient-text,
  .hero-title {
    animation: none !important;
  }
  .holo-card::before,
  .holo-card::after {
    display: none !important;
  }
}