/* ==========================================================================
   SANJAY KUMARAN — PORTFOLIO DESIGN SYSTEM
   Glassmorphism · Gold Accent · Light/Dark Theme
   ========================================================================== */

:root {
  color-scheme: dark;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-display: 'Space Grotesk', var(--font-sans);

  --bg-base: #0a0e1a;
  --bg-surface: #0f172a;
  --glass-bg: rgba(255, 255, 255, 0.07);
  --glass-bg-hover: rgba(255, 255, 255, 0.12);
  --glass-card: rgba(17, 24, 39, 0.65);
  --glass-border: rgba(255, 255, 255, 0.14);
  --glass-border-hover: rgba(255, 255, 255, 0.28);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.45);
  --glass-blur: blur(20px) saturate(190%);
  --glass-modal-bg: rgba(13, 18, 30, 0.88);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --accent-primary: #f5c542;
  --accent-secondary: #f59e0b;
  --accent-gradient: linear-gradient(135deg, #fcd34d 0%, #f59e0b 100%);
  --accent-glow: 0 0 24px rgba(245, 197, 66, 0.35);

  --badge-bg: rgba(245, 197, 66, 0.15);
  --badge-text: #fcd34d;
  --badge-border: rgba(245, 197, 66, 0.35);

  --orb-1: #f59e0b;
  --orb-2: #6366f1;
  --orb-3: #d946ef;

  --lock-color: #f87171;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="light"] {
  color-scheme: light;
  --bg-base: #f1f5f9;
  --bg-surface: #ffffff;
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-bg-hover: rgba(255, 255, 255, 0.88);
  --glass-card: rgba(255, 255, 255, 0.68);
  --glass-border: rgba(255, 255, 255, 0.9);
  --glass-border-hover: rgba(245, 158, 11, 0.4);
  --glass-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
  --glass-blur: blur(24px) saturate(180%);
  --glass-modal-bg: rgba(255, 255, 255, 0.94);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;

  --accent-primary: #d97706;
  --accent-secondary: #b45309;
  --accent-gradient: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  --accent-glow: 0 0 20px rgba(217, 119, 6, 0.25);

  --badge-bg: rgba(217, 119, 6, 0.1);
  --badge-text: #b45309;
  --badge-border: rgba(217, 119, 6, 0.25);

  --orb-1: #fde68a;
  --orb-2: #c7d2fe;
  --orb-3: #f5d0fe;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; scroll-behavior: smooth; max-width: 100%; overflow-x: hidden; }

body {
  font-family: var(--font-sans);
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

h1, h2, h3, h4, h5 { font-family: var(--font-display); }

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; }

.gold-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* --- Ambient Orbs --- */
.ambient-bg { position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden; }
.orb { position: absolute; border-radius: 50%; filter: blur(90px) hue-rotate(0deg); opacity: 0.55; will-change: transform, filter; }
.orb-1 { width: 520px; height: 520px; top: -100px; left: -100px; background: var(--orb-1); animation: floatOrb1 7s ease-in-out infinite alternate, hueDrift 6s ease-in-out infinite alternate; }
.orb-2 { width: 470px; height: 470px; bottom: -120px; right: -80px; background: var(--orb-2); animation: floatOrb2 8.5s ease-in-out infinite alternate, hueDrift 7s ease-in-out infinite alternate; }
.orb-3 { width: 380px; height: 380px; top: 40%; left: 60%; background: var(--orb-3); animation: floatOrb3 6s ease-in-out infinite alternate, hueDrift 5s ease-in-out infinite alternate; }
@keyframes floatOrb1 { 0% { transform: translate(0, 0) scale(1); } 50% { transform: translate(120px, 90px) scale(1.15); } 100% { transform: translate(60px, 160px) scale(0.95); } }
@keyframes floatOrb2 { 0% { transform: translate(0, 0) scale(1); } 50% { transform: translate(-100px, -80px) scale(1.1); } 100% { transform: translate(-160px, 40px) scale(0.9); } }
@keyframes floatOrb3 { 0% { transform: translate(0, 0) scale(1); } 50% { transform: translate(-90px, 100px) scale(1.2); } 100% { transform: translate(70px, -70px) scale(0.95); } }
@keyframes hueDrift { 0% { filter: blur(90px) hue-rotate(0deg); } 50% { filter: blur(100px) hue-rotate(25deg); } 100% { filter: blur(90px) hue-rotate(-15deg); } }

@media (prefers-reduced-motion: reduce) {
  .orb { animation: none !important; }
}

.page-wrap { position: relative; z-index: 1; padding-top: var(--navbar-height, 72px); }

/* --- Navbar --- */
header.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 500;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 5%;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur); -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  /* Forces the fixed+blurred navbar onto its own compositor layer so
     mobile browsers (Android Chrome/WebView especially) repaint the
     content beneath it correctly instead of leaving it blank. */
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  will-change: transform;
  isolation: isolate;
}

/* Give gated/lazy content its own compositor layer too, so it repaints
   reliably under a fixed navbar on mobile instead of staying blank. */
.gate-wrap, .glass-panel { transform: translateZ(0); }

/* Offset anchor-link targets so the fixed navbar never overlaps them */
.section, [id] { scroll-margin-top: var(--navbar-height, 72px); }
.brand { font-family: var(--font-display); font-weight: 700; font-size: 1.3rem; white-space: nowrap; }
.nav-links { display: flex; align-items: center; gap: 2px; flex-wrap: nowrap; }
.nav-link {
  padding: 8px 10px; border-radius: 10px; font-weight: 500; font-size: 0.85rem;
  color: var(--text-secondary); transition: var(--transition-fast);
  display: flex; align-items: center; gap: 5px; white-space: nowrap;
}
.nav-link:hover, .nav-link.active { color: var(--text-primary); background: var(--glass-bg-hover); }
.nav-resume-btn { margin-left: 4px; flex-shrink: 0; }
@media (max-width: 1180px) { .nav-resume-btn { width: 100%; justify-content: center; margin-left: 0; margin-top: 6px; } }
.nav-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.icon-btn {
  width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center;
  background: var(--glass-bg); border: 1px solid var(--glass-border); color: var(--text-primary);
  transition: var(--transition-fast); font-size: 1rem; flex-shrink: 0;
}
.icon-btn:hover { background: var(--glass-bg-hover); transform: translateY(-2px); }
.menu-toggle { display: none; font-size: 1.4rem; background: none; color: var(--text-primary); }

@media (max-width: 1180px) {
  .nav-links { position: fixed; top: 68px; right: -100%; width: min(78vw, 320px); height: calc(100vh - 68px);
    flex-direction: column; align-items: flex-start; padding: 24px;
    background: var(--glass-modal-bg); backdrop-filter: var(--glass-blur);
    border-left: 1px solid var(--glass-border); transition: right var(--transition-smooth); gap: 4px; }
  .nav-links.open { right: 0; }
  .nav-link { width: 100%; font-size: 0.92rem; padding: 10px 14px; }
  .menu-toggle { display: inline-block; }
}

/* --- Buttons --- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 11px 22px;
  border-radius: 12px; font-weight: 600; font-size: 0.92rem;
  transition: var(--transition-fast); white-space: nowrap;
}
.btn-primary { background: var(--accent-gradient); color: #1a1206; box-shadow: var(--accent-glow); }
.btn-primary:hover { transform: translateY(-2px); filter: brightness(1.08); }
.btn-glass {
  background: var(--glass-bg); border: 1px solid var(--glass-border); color: var(--text-primary);
}
.btn-glass:hover { background: var(--glass-bg-hover); border-color: var(--glass-border-hover); transform: translateY(-2px); }
.btn-sm { padding: 7px 14px; font-size: 0.82rem; border-radius: 9px; }
.btn-locked { opacity: 0.85; border-style: dashed; }

/* --- Glass Panel / Card --- */
.glass-panel {
  background: var(--glass-card); backdrop-filter: var(--glass-blur); -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border); border-radius: 20px; box-shadow: var(--glass-shadow);
  transition: var(--transition-normal);
}
.glass-panel:hover { border-color: var(--glass-border-hover); }

.section { padding: 90px 6% 40px; position: relative; z-index: 1; max-width: 1200px; margin: 0 auto; }
.section-head { text-align: center; margin-bottom: 44px; }
.section-head h2 { font-size: clamp(1.7rem, 4vw, 2.4rem); font-weight: 700; }
.section-head p { color: var(--text-secondary); margin-top: 8px; }
.badge-pill {
  display: inline-block; padding: 5px 14px; border-radius: 999px; font-size: 0.78rem; font-weight: 600;
  background: var(--badge-bg); color: var(--badge-text); border: 1px solid var(--badge-border); margin-bottom: 14px;
}

/* --- Hero --- */
.hero { min-height: 92vh; display: flex; align-items: center; justify-content: center; padding: 100px 6% 60px; text-align: center; position: relative; z-index: 1; }
.hero-avatar {
  width: 150px; height: 150px; border-radius: 50%; object-fit: cover; margin: 0 auto 22px;
  border: 3px solid var(--accent-primary); box-shadow: var(--accent-glow);
}
.hero h1 { font-size: clamp(2rem, 5.5vw, 3.4rem); font-weight: 700; margin-bottom: 6px; }
.hero .role { font-size: clamp(1.1rem, 2.5vw, 1.4rem); font-weight: 600; color: #f87171; margin-bottom: 8px; }
.hero .subline { color: var(--text-secondary); max-width: 560px; margin: 0 auto 26px; font-size: 1rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 30px; }
.scroll-cue { color: var(--accent-primary); font-size: 1.4rem; animation: bounce 2s infinite; }
@keyframes bounce { 0%,100%{transform:translateY(0);} 50%{transform:translateY(8px);} }

/* --- Grids --- */
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); }

.card { padding: 26px; }
.card h3 { font-size: 1.1rem; margin-bottom: 6px; }
.card .meta { color: var(--accent-primary); font-size: 0.85rem; font-weight: 600; margin-bottom: 10px; }
.card p { color: var(--text-secondary); font-size: 0.92rem; }

/* Skill bar */
.skill-card { padding: 22px; text-align: center; }
.skill-card img, .skill-icon { width: 46px; height: 46px; margin: 0 auto 10px; object-fit: contain; }
.skill-card h5 { font-size: 0.95rem; }
.skill-card .role { font-size: 0.78rem; color: var(--text-muted); margin: 4px 0 10px; }
.skill-bar { height: 6px; border-radius: 4px; background: rgba(255,255,255,0.1); overflow: hidden; }
.skill-bar-fill { height: 100%; background: var(--accent-gradient); border-radius: 4px; }

/* Timeline / experience cards */
.exp-card { padding: 22px; }
.exp-card h3 { font-size: 1.02rem; }
.exp-card .date { color: var(--accent-primary); font-size: 0.8rem; font-weight: 600; margin: 6px 0 10px; }
.exp-card .row { font-size: 0.88rem; color: var(--text-secondary); margin-bottom: 4px; }
.exp-card .row b { color: var(--text-primary); }

/* Project card */
.project-card { padding: 22px; display: flex; flex-direction: column; }
.project-icon { width: 54px; height: 54px; border-radius: 14px; background: var(--accent-gradient); display: grid; place-items: center; font-size: 1.5rem; margin-bottom: 14px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 6px; margin: 12px 0 16px; }
.tag { padding: 4px 10px; font-size: 0.72rem; font-weight: 600; border-radius: 7px; background: var(--glass-bg); border: 1px solid var(--glass-border); color: var(--text-secondary); }
.card-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; }

/* --- Gate overlay (locked content) --- */
.gate-wrap { position: relative; }
.gate-blur { filter: blur(9px) brightness(0.6); pointer-events: none; user-select: none; }
.gate-overlay {
  position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: flex-start;
  gap: 12px; text-align: center; padding: 36px 20px 20px; border-radius: 20px; z-index: 5; overflow-y: auto;
}
.gate-overlay .lock-icon { font-size: 2rem; }
.gate-overlay p { color: var(--text-secondary); font-size: 0.9rem; max-width: 260px; }

/* --- Auth Modal --- */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,0.6); display: none; align-items: flex-start; justify-content: center;
  z-index: 2000; padding: 20px; padding-top: 90px;
}
.modal-backdrop.open { display: flex; }
.modal-box { width: 100%; max-width: 380px; padding: 34px 28px; text-align: center; }
.modal-box h3 { font-size: 1.3rem; margin-bottom: 8px; }
.modal-box p { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 22px; }
.google-btn {
  width: 100%; justify-content: center; background: #fff; color: #1f1f1f; padding: 12px; border-radius: 12px;
  font-weight: 600; display: flex; align-items: center; gap: 10px; box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}
.google-btn:hover { transform: translateY(-2px); }
.modal-close { position: absolute; top: 14px; right: 16px; background: none; color: var(--text-secondary); font-size: 1.3rem; }

/* User chip */
.user-chip { display: flex; align-items: center; gap: 8px; padding: 5px 12px 5px 5px; border-radius: 999px; background: var(--glass-bg); border: 1px solid var(--glass-border); cursor: pointer; }
.user-chip img { width: 28px; height: 28px; border-radius: 50%; }
.user-chip span { font-size: 0.85rem; font-weight: 600; }

/* --- Resume / Contact / Footer --- */
.resume-box, .contact-box { text-align: center; padding: 50px 20px; }
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 18px; max-width: 700px; margin: 30px auto 0; }
.contact-item { padding: 20px; text-align: center; }
.contact-item h4 { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 4px; }
.contact-item p { font-size: 0.9rem; margin-bottom: 10px; word-break: break-word; }

footer {
  text-align: center; padding: 40px 20px; color: var(--text-muted); font-size: 0.85rem; position: relative; z-index: 1;
}
.footer-icons { display: flex; justify-content: center; gap: 16px; margin-bottom: 14px; }
.footer-icons a { width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; background: var(--glass-bg); border: 1px solid var(--glass-border); transition: var(--transition-fast); overflow: hidden; }
.footer-icons a:hover { background: var(--glass-bg-hover); transform: translateY(-3px); color: var(--accent-primary); }
.footer-icons a img { width: 20px; height: 20px; object-fit: contain; }

/* Page header for sub-pages */
.page-header { text-align: center; padding: 120px 6% 20px; }
.page-header h1 { font-size: clamp(1.8rem, 5vw, 2.8rem); }
.page-header p { color: var(--text-secondary); margin-top: 8px; }

/* Utility */
.center { text-align: center; }
.mt { margin-top: 20px; }
.hidden { display: none !important; }
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-thumb { background: var(--glass-border-hover); border-radius: 8px; }

/* --- Highlights Slider --- */
.slider-container { position: relative; max-width: 640px; margin: 0 auto; }
.slider-wrapper { overflow: hidden; border-radius: 20px; }
.slider-track { display: flex; transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1); }
.slide { min-width: 100%; box-sizing: border-box; }
.slide img { width: 100%; aspect-ratio: 4/3; object-fit: cover; display: block; }
.slide-caption { padding: 18px 20px 22px; text-align: left; }
.slide-caption h3 { font-size: 1.15rem; margin-bottom: 4px; }
.slide-caption .loc { color: var(--text-secondary); font-size: 0.85rem; margin-bottom: 14px; }
.slide-caption .btn-row { display: flex; flex-wrap: wrap; gap: 8px; }
.slide-btn {
  position: absolute; top: 40%; transform: translateY(-50%); z-index: 5;
  width: 42px; height: 42px; border-radius: 50%; background: var(--glass-bg); border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur); color: var(--text-primary); font-size: 1.4rem; display: grid; place-items: center;
  transition: var(--transition-fast);
}
.slide-btn:hover { background: var(--accent-gradient); color: #1a1206; }
.prev-btn { left: -6px; }
.next-btn { right: -6px; }
.slider-dots { display: flex; justify-content: center; gap: 8px; margin-top: 16px; }
.slider-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--glass-border); cursor: pointer; transition: var(--transition-fast); border: none; }
.slider-dot.active { background: var(--accent-primary); width: 22px; border-radius: 5px; }
@media (max-width: 640px) {
  .prev-btn { left: 4px; } .next-btn { right: 4px; }
}

/* --- Project Detail Embeds --- */
.embed-frame { width: 100%; aspect-ratio: 4/5; max-height: 480px; border: none; border-radius: 12px; margin-top: 12px; background: rgba(0,0,0,0.15); }
.embed-video { width: 100%; border-radius: 12px; margin-top: 12px; max-height: 420px; object-fit: cover; background: #000; }
.week-card { text-align: center; }
.week-card h3 { font-size: 1rem; margin-bottom: 10px; }
.week-card .btn-row { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }

/* --- Badges Grid --- */
.badge-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); gap: 16px; justify-items: center; }
.badge-grid a { display: block; width: 90px; height: 90px; transition: var(--transition-fast); }
.badge-grid a:hover { transform: translateY(-4px) scale(1.05); }
.badge-grid img { width: 100%; height: 100%; object-fit: contain; border-radius: 10px; }

/* --- Modal mobile fix --- */
.modal-backdrop { overflow-y: auto; }
.modal-box { max-height: calc(100vh - 130px); overflow-y: auto; }
@media (max-width: 480px) {
  .modal-backdrop { padding-top: 70px; }
  .modal-box { max-height: calc(100vh - 100px); padding: 24px 18px; }
}


.typing-text {
  display: inline-block;
  line-height: inherit; 
  vertical-align: bottom;
   white-space: nowrap;
      overflow: hidden;
      width: 0;
    
      animation: typing 2s steps(12, end) forwards;
   background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
     
    }

    @keyframes typing {
      from { width: 0; }
      to { width: 12ch; }
    }    

.blink {
    animation: blinker 3s linear infinite;
  }

  @keyframes blinker {
    50% {
      opacity: 0;
    }
  }