/* ══════════════════════════════════════════════════════════════════
   GLOBAL STYLES — Pratik Das Portfolio
   Palette derived from aurora night scene (desktop-bg.png):
   · Deep Midnight Navy   base  (#040a1a)
   · Aurora Sky Blue      primary (#38bdf8 — matches city skyline glow)
   · Warm Amber           accent  (#f59e0b — matches city/lantern lights)
   · Aurora Teal-Green    accent2 (#00c49b — matches aurora bands)
   · Silver-White         text    (#f0f6ff)
══════════════════════════════════════════════════════════════════ */

:root {
  /* ── Base Midnight Palette ── */
  --clr-bg:          #040a1a;
  --clr-bg2:         #060e22;
  --clr-bg3:         #08122a;
  --clr-surface:     #070e20;
  --clr-surface2:    #0a1428;
  --clr-surface-card:#070d1e;
  --clr-border:      rgba(255, 255, 255, 0.07);
  --clr-border2:     rgba(255, 255, 255, 0.12);
  --clr-border-glow: rgba(56, 189, 248, 0.22);

  /* ── Aurora Brand Accents ── */
  /* Sky Blue — city skyline glow, aurora edge */
  --clr-primary:     #38bdf8;
  --clr-primary2:    #0284c7;
  --clr-primary-glow: rgba(56, 189, 248, 0.26);

  /* Warm Amber — city lights, lantern warmth */
  --clr-amber:       #f59e0b;
  --clr-amber-hover: #d97706;
  --clr-gold:        #fbbf24;
  --clr-amber-glow:  rgba(245, 158, 11, 0.26);
  --clr-bronze:      #b45309;

  /* Aurora Teal & Accents */
  --clr-accent:      #00c49b;
  --clr-accent2:     #00a882;
  --clr-emerald:     #10b981;
  --clr-purple:      #8b5cf6;
  --clr-rose:        #f43f5e;

  /* ── Typography Colours ── */
  --clr-text:        #f0f6ff;
  --clr-text2:       #94a3b8;
  --clr-text3:       #546a8a;

  /* ── Radii ── */
  --r-sm:   8px;
  --r-md:   14px;
  --r-lg:   20px;
  --r-xl:   26px;
  --r-full: 9999px;

  /* ── Shadows & Glows ── */
  --sh-sm:         0 2px 14px rgba(0, 0, 0, 0.5);
  --sh-md:         0 10px 40px rgba(0, 0, 0, 0.65);
  --sh-lg:         0 24px 72px rgba(0, 0, 0, 0.75);
  --sh-glow-blue:  0 0 60px rgba(56, 189, 248, 0.18);
  --sh-glow-amber: 0 0 60px rgba(245, 158, 11, 0.18);
  --sh-glow-card:  0 14px 45px rgba(0, 0, 0, 0.65), 0 0 0 1px rgba(255, 255, 255, 0.06);

  /* ── Fonts ── */
  --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --mono: 'JetBrains Mono', monospace;

  /* ── Transitions ── */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --t: all 0.3s var(--ease);
  --t-smooth: all 0.5s cubic-bezier(0.25, 1, 0.5, 1);

  /* ── Variable Aliases for Page Consistency ── */
  --radius-sm:   var(--r-sm);
  --radius-md:   var(--r-md);
  --radius-lg:   var(--r-lg);
  --radius-xl:   var(--r-xl);
  --radius-full: var(--r-full);
  --font-mono:   var(--mono);
  --font-sans:   var(--font);
  --transition:  var(--t);
  --shadow-sm:   var(--sh-sm);
  --shadow-md:   var(--sh-md);
  --shadow-lg:   var(--sh-lg);
  --shadow-glow: var(--sh-glow-blue);
}


/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; background: #040a1a; }
body {
  background: transparent; /* bg-video.mp4 / desktop-bg.png handle background */
  color: var(--clr-text);
  font-family: var(--font);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  letter-spacing: -0.025em;
  font-weight: 700;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }

/* ── Custom scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--clr-bg); }
::-webkit-scrollbar-thumb { background: #1e293b; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--clr-amber); }

/* ── Layout Container ── */
.container { max-width: 1220px; margin: 0 auto; padding: 0 28px; }
.section-pad { padding: 54px 0; }

/* ── Section Labels ── */
.section-label {
  font-family: var(--mono);
  font-size: 0.74rem; font-weight: 600;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--clr-amber);
  margin-bottom: 8px;
}

.section-title {
  font-size: clamp(2rem, 4.2vw, 3.1rem);
  font-weight: 800; line-height: 1.15;
  color: var(--clr-text); margin-bottom: 28px;
  letter-spacing: -0.025em;
}

/* ── Gradient Text ── */
.gradient-text {
  background: linear-gradient(135deg, #ffffff 0%, #38bdf8 50%, #f59e0b 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.gradient-accent-text {
  background: linear-gradient(135deg, #38bdf8 0%, #67e8f9 60%, #34d399 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.gradient-gold {
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 60%, #d97706 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 13px 30px; border-radius: var(--r-full);
  font-size: 0.92rem; font-weight: 600; letter-spacing: 0.02em;
  transition: var(--t); position: relative;
}
.btn-primary {
  background: linear-gradient(135deg, #38bdf8 0%, #0284c7 60%, #f59e0b 130%);
  color: #ffffff;
  box-shadow: 0 4px 24px rgba(56, 189, 248, 0.35);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 36px rgba(56, 189, 248, 0.5), 0 0 24px rgba(245, 158, 11, 0.35);
  color: #ffffff;
}
.btn-ghost {
  border: 1.5px solid rgba(255, 255, 255, 0.14);
  color: var(--clr-text);
  background: rgba(255, 255, 255, 0.03);
}
.btn-ghost:hover {
  border-color: var(--clr-amber);
  color: #ffffff;
  background: rgba(245, 158, 11, 0.08);
  transform: translateY(-3px);
  box-shadow: 0 4px 20px rgba(245, 158, 11, 0.15);
}
.btn-outline {
  border: 1.5px solid rgba(56, 189, 248, 0.4);
  color: var(--clr-primary); background: transparent;
}
.btn-outline:hover {
  background: var(--clr-primary); color: #06080d;
  border-color: var(--clr-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(56, 189, 248, 0.4);
}
.btn-lg { padding: 16px 44px; font-size: 1rem; }

/* ── Social Links — High-contrast frosted glass buttons ── */
.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: var(--r-full);
  border: 1.5px solid rgba(56, 189, 248, 0.40);
  color: #ffffff !important;
  background: rgba(6, 14, 32, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.15);
  transition: all 0.3s cubic-bezier(0.2, 0, 0, 1);
}
.social-link svg {
  width: 20px;
  height: 20px;
  color: #ffffff;
  transition: all 0.3s var(--ease);
}
.social-link:hover {
  border-color: #38bdf8;
  color: #38bdf8 !important;
  background: rgba(56, 189, 248, 0.20);
  transform: translateY(-3px) scale(1.08);
  box-shadow: 0 8px 24px rgba(56, 189, 248, 0.45), 0 0 16px rgba(56, 189, 248, 0.3);
}
.social-link:hover svg {
  color: #38bdf8;
}

/* ── AURORA BACKGROUND — handled by background.js global canvas ── */
/* aurora-bg divs are hidden by background.css */
.aurora-bg { display: none !important; }

/* ── PAGE HEADER PSEUDO-ELEMENT: shimmer streak ── */
/* Keep a subtle shimmer on page headers for premium look */
.page-header::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    108deg,
    transparent 0%,
    transparent 28%,
    rgba(56, 189, 248, 0.022) 44%,
    rgba(245, 158, 11, 0.015) 50%,
    transparent 64%,
    transparent 100%
  );
  background-size: 300% 100%;
  pointer-events: none;
  animation: shimmerStreak 12s ease-in-out infinite;
}
@keyframes shimmerStreak {
  0%   { background-position: -100% 0; opacity: 0; }
  15%  { opacity: 1; }
  85%  { opacity: 1; }
  100% { background-position: 220% 0; opacity: 0; }
}

/* Grid pattern — ultra-subtle dot grid for inner page headers */
.grid-pattern {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    radial-gradient(circle, rgba(255,255,255,0.055) 1px, transparent 1px);
  background-size: 38px 38px;
  mask-image: radial-gradient(ellipse 92% 92% at 50% 50%, black 0%, transparent 100%);
  opacity: 0.55;
}

/* ── NAVBAR (Matching Zephoria's floating pill navigation) ── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 10001; padding: 18px 0;
  padding-top: max(18px, env(safe-area-inset-top));
  transition: var(--t);
}
.nav-drawer-header,
.nav-drawer-footer { display: none !important; }
.navbar.scrolled {
  padding: 12px 0;
  background: rgba(3, 7, 18, 0.88);
  backdrop-filter: blur(28px) saturate(1.4); -webkit-backdrop-filter: blur(28px) saturate(1.4);
  border-bottom: 1px solid rgba(56, 189, 248, 0.12);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.7), 0 0 0 1px rgba(56, 189, 248, 0.05);
}
.nav-inner {
  display: flex; align-items: center;
  justify-content: space-between; gap: 32px;
}
.nav-right-group {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-logo {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(4, 12, 30, 0.80);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 12px;
  padding: 8px 18px;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  font-family: var(--mono); font-size: 1.15rem; font-weight: 800;
  color: #ffffff; transition: var(--t);
  letter-spacing: -0.01em;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}
.nav-logo:hover {
  border-color: rgba(56, 189, 248, 0.45);
  box-shadow: 0 4px 25px rgba(56, 189, 248, 0.25);
  color: #38bdf8;
}
.logo-bracket { color: #f59e0b; }
.nav-links {
  display: flex; align-items: center; gap: 4px;
  background: rgba(4, 12, 30, 0.80);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--r-full);
  padding: 5px 8px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 4px 25px rgba(0, 0, 0, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}
.nav-links a {
  padding: 7px 18px; border-radius: var(--r-full);
  font-size: 0.88rem; font-weight: 600;
  color: #cbd5e1; transition: var(--t);
  letter-spacing: 0.02em;
}
.nav-links a:hover, .nav-links a.active {
  color: #ffffff;
  background: rgba(56, 189, 248, 0.18);
  box-shadow: 0 0 15px rgba(56, 189, 248, 0.25);
}
.nav-cta {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%) !important;
  border: 1px solid rgba(56, 189, 248, 0.6) !important;
  color: #ffffff !important; padding: 7px 22px !important;
  box-shadow: 0 2px 18px rgba(56, 189, 248, 0.4) !important;
}
.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(56, 189, 248, 0.6) !important;
}

/* ── Hamburger ── */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 8px;
  border-radius: 10px;
  background: rgba(4, 12, 30, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.12);
  cursor: pointer;
  position: relative;
  z-index: 1002;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: var(--t);
}
.hamburger:hover {
  border-color: rgba(56, 189, 248, 0.45);
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: var(--t);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── PAGE HEADER (Inner Pages) ── */
.page-header {
  padding: 112px 0 36px;
  position: relative; overflow: hidden;
  background:
    radial-gradient(ellipse 140% 100% at 50% -30%, rgba(8, 16, 45, 0.95) 0%, transparent 60%),
    linear-gradient(160deg, #020308 0%, #04060e 50%, #030208 100%);
  border-bottom: 1px solid rgba(56, 189, 248, 0.08);
}
.page-header-label {
  font-family: var(--mono); font-size: 0.74rem; font-weight: 600;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--clr-amber); margin-bottom: 10px;
}
.page-header-title {
  font-size: clamp(2.2rem, 5.5vw, 3.8rem);
  font-weight: 900; margin-bottom: 12px; letter-spacing: -0.03em;
  line-height: 1.08;
}
.page-header-sub {
  font-size: 1.02rem; color: var(--clr-text2);
  max-width: 600px; line-height: 1.65;
}

/* ── FOOTER ── */
.footer {
  border-top: 1px solid rgba(56, 189, 248, 0.07);
  padding: 28px 0;
  background: #010208;
}
.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 20px;
}
.footer-copy { font-size: 0.86rem; color: var(--clr-text3); }
.footer-links { display: flex; gap: 24px; }
.footer-links a { font-size: 0.86rem; color: var(--clr-text3); transition: var(--t); }
.footer-links a:hover { color: var(--clr-primary); }

/* ── REVEAL ANIMATIONS ── */
.reveal-up {
  opacity: 0; transform: translateY(40px);
  transition: opacity 0.75s var(--ease), transform 0.75s var(--ease);
}
.reveal-up.visible { opacity: 1; transform: translateY(0); }
.reveal-right {
  opacity: 0; transform: translateX(50px);
  transition: opacity 0.75s var(--ease), transform 0.75s var(--ease);
}
.reveal-right.visible { opacity: 1; transform: translateX(0); }
.reveal-left {
  opacity: 0; transform: translateX(-50px);
  transition: opacity 0.75s var(--ease), transform 0.75s var(--ease);
}
.reveal-left.visible { opacity: 1; transform: translateX(0); }

/* ── Image Glare Effect ── */
.img-glare {
  position: relative; overflow: hidden;
}
.img-glare::after {
  content: '';
  position: absolute; top: 0; left: -120%;
  width: 60%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.08), transparent);
  transform: skewX(-20deg);
  transition: left 0.65s var(--ease);
  pointer-events: none;
}
.img-glare:hover::after { left: 160%; }

/* ── Responsive ── */
/* ── Responsive Navigation Breakpoints ── */
@media (min-width: 901px) and (max-width: 1080px) {
  .nav-inner { gap: 14px; }
  .nav-logo { padding: 6px 14px; font-size: 1.05rem; }
  .nav-links { padding: 4px 6px; gap: 2px; }
  .nav-links a { padding: 6px 11px; font-size: 0.81rem; }
  .nav-cta { padding: 6px 14px !important; }
}

@media (max-width: 900px) {
  .hamburger { display: flex; }
  .nav-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(2, 6, 18, 0.72);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 10000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
  }
  .nav-backdrop.open {
    opacity: 1;
    pointer-events: auto;
  }
  .nav-links {
    position: fixed;
    top: 0; right: 0;
    width: min(320px, 86vw);
    height: 100vh;
    height: 100dvh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    flex-direction: column;
    background: #050c1e;
    background: linear-gradient(180deg, #07122a 0%, #030816 100%);
    padding: 20px 20px 36px;
    padding-top: max(20px, env(safe-area-inset-top));
    padding-bottom: max(36px, env(safe-area-inset-bottom));
    align-items: stretch;
    gap: 8px;
    transform: translateX(100%);
    transition: transform 0.32s cubic-bezier(0.2, 0, 0, 1);
    border-left: 1px solid rgba(56, 189, 248, 0.3);
    border-radius: 0;
    box-shadow: -16px 0 60px rgba(0, 0, 0, 0.95);
    z-index: 10002;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 4px 0 16px;
    margin-bottom: 8px;
    border-bottom: 1px solid rgba(56, 189, 248, 0.2);
  }
  .nav-drawer-brand {
    font-family: var(--mono);
    font-size: 1.15rem;
    font-weight: 800;
    color: #ffffff;
    display: inline-flex;
    align-items: center;
    gap: 8px;
  }
  .nav-drawer-tag {
    font-size: 0.72rem;
    font-family: var(--mono);
    color: var(--clr-amber);
    background: rgba(245, 158, 11, 0.12);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: 6px;
    padding: 2px 8px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }
  .nav-drawer-close {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: rgba(56, 189, 248, 0.12);
    border: 1px solid rgba(56, 189, 248, 0.35);
    border-radius: var(--r-full);
    color: #ffffff;
    font-family: var(--font-body);
    font-size: 0.84rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
  }
  .nav-drawer-close:hover,
  .nav-drawer-close:active {
    background: rgba(239, 68, 68, 0.25);
    border-color: rgba(239, 68, 68, 0.6);
    color: #fca5a5;
  }
  .nav-links a {
    font-size: 1rem;
    font-weight: 600;
    width: 100%;
    padding: 12px 18px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    min-height: 48px;
    color: #e2e8f0;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.2s ease;
  }
  .nav-links a:hover,
  .nav-links a:active,
  .nav-links a.active {
    color: #ffffff;
    background: rgba(56, 189, 248, 0.16);
    border-color: rgba(56, 189, 248, 0.45);
    box-shadow: 0 0 18px rgba(56, 189, 248, 0.2);
  }
  .nav-cta {
    margin-top: 10px;
    justify-content: center !important;
    text-align: center;
  }
  .nav-drawer-footer {
    display: block !important;
    margin-top: auto;
    padding-top: 18px;
    border-top: 1px solid rgba(56, 189, 248, 0.18);
    width: 100%;
  }
  .section-pad { padding: 38px 0; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .nav-logo { padding: 6px 14px; font-size: 1rem; }
  .btn { padding: 12px 24px; font-size: 0.88rem; min-height: 44px; }
  .page-header { padding: 94px 0 28px; }
  .page-header-title { font-size: clamp(1.85rem, 8vw, 2.5rem); }
  .section-title { font-size: clamp(1.75rem, 7vw, 2.2rem); }
  .footer-inner { flex-direction: column; text-align: center; gap: 14px; }
  .footer-links { justify-content: center; }
}