/* ============ TOKENS ============ */
:root{
  --bg:#ffffff;
  --bg-soft:#faf8fd;
  --ink:#161022;
  --ink-soft:#615a72;
  --grid-line: rgba(109,40,217,0.09);
  --grid-line-strong: rgba(109,40,217,0.16);
  --purple-1:#6d28d9;
  --purple-2:#9333ea;
  --purple-3:#c084fc;
  --purple-4:#f0abfc;
  --card-bg: rgba(124,58,237,0.045);
  --card-border: rgba(109,40,217,0.16);
  --shadow: 0 20px 60px rgba(109,40,217,0.14);
  --grad: linear-gradient(135deg, var(--purple-1), var(--purple-2) 50%, var(--purple-4));
  --nav-bg: rgba(255,255,255,0.72);
  --ff-display:'Unbounded', 'Hind Siliguri', sans-serif;
  --ff-body:'Inter', 'Hind Siliguri', sans-serif;
  --ff-bn:'Hind Siliguri', 'Inter', sans-serif;

  /* ============ LIQUID GLASS TOKENS ============ */
  --glass-bg: rgba(255,255,255,0.38);
  --glass-bg-soft: rgba(255,255,255,0.22);
  --glass-border: rgba(255,255,255,0.55);
  --glass-highlight: rgba(255,255,255,0.85);
  --glass-shadow: 0 8px 32px rgba(109,40,217,0.14), inset 0 1px 0 rgba(255,255,255,0.6), inset 0 -1px 0 rgba(109,40,217,0.05);
  --glass-blur: blur(22px) saturate(180%);
  --glass-blur-strong: blur(34px) saturate(200%);
}
html[data-theme="dark"]{
  --bg:#0a0712;
  --bg-soft:#0f0b19;
  --ink:#f4f1fa;
  --ink-soft:#b3a9c9;
  --grid-line: rgba(168,85,247,0.14);
  --grid-line-strong: rgba(168,85,247,0.26);
  --purple-1:#a855f7;
  --purple-2:#c084fc;
  --purple-3:#e9d5ff;
  --purple-4:#f0abfc;
  --card-bg: rgba(168,85,247,0.07);
  --card-border: rgba(168,85,247,0.24);
  --shadow: 0 20px 70px rgba(168,85,247,0.28);
  --nav-bg: rgba(10,7,18,0.6);

  --glass-bg: rgba(30,20,45,0.42);
  --glass-bg-soft: rgba(30,20,45,0.28);
  --glass-border: rgba(255,255,255,0.14);
  --glass-highlight: rgba(255,255,255,0.22);
  --glass-shadow: 0 8px 36px rgba(0,0,0,0.45), inset 0 1px 0 rgba(255,255,255,0.1), inset 0 -1px 0 rgba(0,0,0,0.3);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--ff-body);
  overflow-x:hidden;
  transition:background .5s ease, color .5s ease;
  -webkit-font-smoothing:antialiased;
}
::selection{ background:var(--purple-2); color:#fff; }
img{max-width:100%; display:block;}
a{color:inherit; text-decoration:none;}
button{font-family:inherit;}

/* ============ GRID BACKGROUND ============ */
.grid-bg{
  position:fixed; inset:0; z-index:0; pointer-events:none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
  transition: background-image .5s ease;
}
.grid-glow{
  position:fixed; inset:0; z-index:0; pointer-events:none;
  background: radial-gradient(420px circle at var(--mx,50%) var(--my,20%), rgba(168,85,247,0.22), transparent 60%);
  mix-blend-mode: normal;
  transition: opacity .4s ease;
}
html[data-theme="dark"] .grid-glow{ background: radial-gradient(480px circle at var(--mx,50%) var(--my,20%), rgba(168,85,247,0.32), transparent 60%); }

/* ============ LIQUID GLASS FLOATING BLOBS (colour source for the glass to refract) ============ */
.liquid-blobs{ position:fixed; inset:0; z-index:0; pointer-events:none; overflow:hidden; }
.liquid-blobs span{
  position:absolute; border-radius:50%; filter:blur(70px); opacity:.55;
  animation: blobFloat 22s ease-in-out infinite;
}
.liquid-blobs span:nth-child(1){ width:420px; height:420px; top:-8%; left:-6%; background:radial-gradient(circle at 30% 30%, var(--purple-3), var(--purple-1)); animation-duration:26s; }
.liquid-blobs span:nth-child(2){ width:360px; height:360px; top:18%; right:-8%; background:radial-gradient(circle at 60% 40%, var(--purple-4), var(--purple-2)); animation-duration:19s; animation-delay:-4s; }
.liquid-blobs span:nth-child(3){ width:300px; height:300px; bottom:6%; left:12%; background:radial-gradient(circle at 40% 60%, var(--purple-2), var(--purple-1)); animation-duration:24s; animation-delay:-9s; }
.liquid-blobs span:nth-child(4){ width:260px; height:260px; bottom:-6%; right:16%; background:radial-gradient(circle at 50% 50%, var(--purple-3), var(--purple-4)); animation-duration:21s; animation-delay:-13s; }
@keyframes blobFloat{
  0%,100%{ transform:translate(0,0) scale(1); }
  33%{ transform:translate(30px,-40px) scale(1.08); }
  66%{ transform:translate(-24px,26px) scale(.94); }
}
@media (prefers-reduced-motion: reduce){ .liquid-blobs span{ animation:none; } }
@media (max-width:720px){
  /* Heavy fixed + blurred + constantly-animating background layers are a common
     cause of scroll stutter/freeze on mid-range phones. Turn the animation off
     and shrink the blur radius on small screens so scrolling stays smooth. */
  .liquid-blobs span{ filter:blur(36px); opacity:.32; animation:none; }
  .grid-glow{ display:none; }
  :root{ --glass-blur: blur(10px) saturate(140%); --glass-blur-strong: blur(14px) saturate(140%); }
}

/* ============ LIQUID GLASS SURFACE (shared) ============ */
.glass{
  background: linear-gradient(155deg, var(--glass-highlight), var(--glass-bg) 40%, var(--glass-bg-soft));
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  border:1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  position:relative;
}
.glass::before{
  content:""; position:absolute; inset:0; border-radius:inherit; pointer-events:none;
  background:linear-gradient(120deg, rgba(255,255,255,0.5) 0%, rgba(255,255,255,0) 28%);
  opacity:.7; mix-blend-mode:overlay;
}
html[data-theme="dark"] .glass::before{ background:linear-gradient(120deg, rgba(255,255,255,0.18) 0%, rgba(255,255,255,0) 30%); }

/* ============ CUSTOM CURSOR (fine pointer only) ============ */
@media (hover:hover) and (pointer:fine){
  body.has-cursor{ cursor:none; }
  body.has-cursor a, body.has-cursor button, body.has-cursor .project-card, body.has-cursor .skill-chip{ cursor:none; }
}
.cursor-dot, .cursor-ring{
  position:fixed; top:0; left:0; z-index:9999; pointer-events:none;
  transform:translate(-50%,-50%);
  border-radius:50%;
  will-change:transform;
}
.cursor-dot{
  width:7px; height:7px; background:var(--purple-2);
}
.cursor-ring{
  width:38px; height:38px; border:1.5px solid var(--purple-2);
  transition: width .25s ease, height .25s ease, border-color .25s ease, background .25s ease;
}
.cursor-ring.active{
  width:74px; height:74px; background:rgba(168,85,247,0.14);
}
.cursor-ring::after{
  content:attr(data-label);
  position:absolute; inset:0; display:flex; align-items:center; justify-content:center;
  font-family:var(--ff-body); font-size:10px; font-weight:700; letter-spacing:.08em;
  opacity:0; transition:opacity .2s ease; color:var(--purple-1); text-transform:uppercase;
}
.cursor-ring.active::after{ opacity:1; }

/* ============ SMOOTH-SCROLL VIEWPORT ============ */
#scroll-viewport{ position:relative; z-index:1; }

/* ============ LAYOUT HELPERS ============ */
.wrap{ max-width:1180px; margin:0 auto; padding:0 28px; }
section{ position:relative; padding:120px 0; }
@media (max-width:720px){ section{ padding:80px 0; } }

/* ============ NAV ============ */
nav{
  position:fixed; top:14px; left:14px; right:14px; z-index:500;
  max-width:1180px; margin:0 auto; border-radius:22px;
  background: linear-gradient(155deg, var(--glass-highlight), var(--glass-bg) 45%, var(--glass-bg-soft));
  -webkit-backdrop-filter: var(--glass-blur-strong);
  backdrop-filter: var(--glass-blur-strong);
  border:1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  transition:background .5s ease, border-color .5s ease, box-shadow .5s ease;
}
nav::before{
  content:""; position:absolute; inset:0; border-radius:inherit; pointer-events:none;
  background:linear-gradient(120deg, rgba(255,255,255,0.55) 0%, rgba(255,255,255,0) 30%);
  opacity:.7; mix-blend-mode:overlay;
}
html[data-theme="dark"] nav::before{ background:linear-gradient(120deg, rgba(255,255,255,0.16) 0%, rgba(255,255,255,0) 32%); }
.nav-inner{
  max-width:1180px; margin:0 auto; padding:13px 22px;
  display:flex; align-items:center; justify-content:space-between;
  position:relative;
}
.logo{
  font-family:var(--ff-display); font-weight:800; font-size:16px; letter-spacing:.02em;
}
.logo span{ background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent; }
.nav-links{ display:flex; gap:34px; list-style:none; margin:0; padding:0; }
.nav-links a{
  font-size:14px; font-weight:600; color:var(--ink-soft); position:relative; padding:4px 0;
}
.nav-links a:hover{ color:var(--ink); }
.nav-links a::after{
  content:""; position:absolute; left:0; bottom:-2px; height:2px; width:0%;
  background:var(--grad); transition:width .3s ease;
}
.nav-links a:hover::after{ width:100%; }
.nav-tools{ display:flex; align-items:center; gap:10px; }
.tool-btn{
  width:38px; height:38px; border-radius:50%;
  border:1px solid var(--glass-border);
  background: linear-gradient(155deg, var(--glass-highlight), var(--glass-bg-soft));
  -webkit-backdrop-filter: blur(10px) saturate(160%);
  backdrop-filter: blur(10px) saturate(160%);
  box-shadow: 0 4px 14px rgba(109,40,217,0.12), inset 0 1px 0 rgba(255,255,255,0.5);
  display:flex; align-items:center; justify-content:center;
  color:var(--ink); transition:transform .25s ease, background .25s ease, box-shadow .25s ease;
}
.tool-btn:hover{ transform:translateY(-2px) rotate(-6deg); background:var(--purple-2); color:#fff; box-shadow:0 10px 22px rgba(147,51,234,0.35); }
.tool-btn svg{ width:17px; height:17px; }
#theme-toggle .moon{ display:none; }
html[data-theme="dark"] #theme-toggle .sun{ display:none; }
html[data-theme="dark"] #theme-toggle .moon{ display:block; }
#lang-toggle{ width:auto; padding:0 14px; border-radius:20px; font-size:12px; font-weight:800; letter-spacing:.04em; }
.hamburger{ display:none; }
@media (max-width:860px){
  .nav-links{ display:none; }
  .hamburger{ display:flex; }
}

/* mobile menu */
#mobile-menu{
  position:fixed; inset:0; z-index:499;
  background: linear-gradient(155deg, var(--glass-highlight), var(--glass-bg) 45%, var(--glass-bg-soft));
  -webkit-backdrop-filter: var(--glass-blur-strong); backdrop-filter: var(--glass-blur-strong);
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:28px;
  transform:translateY(-100%); transition:transform .45s cubic-bezier(.7,0,.2,1);
  pointer-events:none;
}
#mobile-menu.open{ transform:translateY(0); pointer-events:auto; }
#mobile-menu a{ font-family:var(--ff-display); font-size:26px; font-weight:600; }

/* ============ HERO ============ */
.hero{ min-height:100vh; min-height:100svh; display:flex; align-items:center; padding-top:120px; }
.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-size:12px; font-weight:700; letter-spacing:.14em; text-transform:uppercase;
  color:var(--purple-1); margin-bottom:22px;
}
.eyebrow::before{ content:""; width:8px; height:8px; border-radius:50%; background:var(--grad); }
.hero h1{
  font-family:var(--ff-display); font-weight:900; line-height:0.98;
  font-size:clamp(44px, 8.6vw, 108px);
  margin:0 0 22px;
  letter-spacing:-0.01em;
}
.hero h1 .word{ display:inline-block; overflow:hidden; vertical-align:top; }
.hero h1 .word span{ display:inline-block; transform:translateY(115%); transition:transform .8s cubic-bezier(.16,1,.3,1); }
.hero h1 .grad-text{ background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent; }
.hero-sub{
  max-width:560px; font-size:clamp(16px,2vw,19px); color:var(--ink-soft); line-height:1.6; margin-bottom:38px;
  opacity:0; transform:translateY(16px); transition:opacity .8s ease .5s, transform .8s ease .5s;
}
.hero-cta{ display:flex; gap:16px; flex-wrap:wrap; opacity:0; transform:translateY(16px); transition:opacity .8s ease .65s, transform .8s ease .65s; }
.btn{
  display:inline-flex; align-items:center; gap:10px;
  padding:15px 26px; border-radius:100px; font-weight:700; font-size:14px;
  border:1px solid transparent; transition:transform .3s ease, box-shadow .3s ease, background .3s ease;
  position:relative; overflow:hidden;
}
.btn-primary{
  background:var(--grad); color:#fff; box-shadow:0 12px 30px rgba(147,51,234,0.35), inset 0 1px 0 rgba(255,255,255,0.4);
  -webkit-backdrop-filter:blur(6px); backdrop-filter:blur(6px);
}
.btn-primary::before{
  content:""; position:absolute; inset:0; border-radius:inherit;
  background:linear-gradient(120deg, rgba(255,255,255,0.55) 0%, rgba(255,255,255,0) 35%);
  mix-blend-mode:overlay; pointer-events:none;
}
.btn-primary:hover{ transform:translateY(-3px); box-shadow:0 18px 40px rgba(147,51,234,0.45), inset 0 1px 0 rgba(255,255,255,0.5); }
.btn-ghost{
  border-color:var(--glass-border); color:var(--ink);
  background: linear-gradient(155deg, var(--glass-highlight), var(--glass-bg-soft));
  -webkit-backdrop-filter: blur(12px) saturate(160%);
  backdrop-filter: blur(12px) saturate(160%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.4);
}
.btn-ghost:hover{ transform:translateY(-3px); border-color:var(--purple-2); }
.hero.in-view .hero-sub, .hero.in-view .hero-cta{ opacity:1; transform:translateY(0); }
.hero.in-view h1 .word span{ transform:translateY(0); }

/* stagger word delays */
.hero h1 .word:nth-child(1) span{ transition-delay:.05s; }
.hero h1 .word:nth-child(2) span{ transition-delay:.15s; }
.hero h1 .word:nth-child(3) span{ transition-delay:.25s; }
.hero h1 .word:nth-child(4) span{ transition-delay:.35s; }

/* ============ REVEAL UTILITY ============ */
/* Content is always visible by default. It no longer depends on JS/IntersectionObserver
   ever firing, so nothing can get stuck invisible (this was the cause of the blank-space
   bug on slow phones / in-app browsers). JS still adds .in-view for a harmless no-op. */
.reveal{ opacity:1; transform:none; }

/* ============ SECTION HEADS ============ */
.section-head{ margin-bottom:56px; max-width:640px; }
.tag{ font-size:12px; font-weight:800; letter-spacing:.14em; text-transform:uppercase; color:var(--purple-1); }
.section-head h2{ font-family:var(--ff-display); font-size:clamp(30px,4.2vw,48px); font-weight:800; margin:10px 0 14px; line-height:1.08; }
.section-head p{ color:var(--ink-soft); font-size:16px; line-height:1.7; }

/* ============ ABOUT ============ */
.about-grid{ display:grid; grid-template-columns: 0.9fr 1.1fr; gap:64px; align-items:center; }
@media (max-width:860px){ .about-grid{ grid-template-columns:1fr; gap:36px; } }
.avatar-frame{
  position:relative; aspect-ratio:1/1.05; border-radius:28px; overflow:hidden;
  background:var(--grad); padding:3px;
  box-shadow: var(--glass-shadow);
}
.avatar-frame .inner{
  width:100%; height:100%; border-radius:26px; overflow:hidden; position:relative;
  display:flex; align-items:flex-end; justify-content:center;
  background: linear-gradient(155deg, var(--glass-highlight), var(--glass-bg) 45%, var(--glass-bg-soft));
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
}
.avatar-frame .inner img{
  width:100%; height:100%; object-fit:cover; display:block;
}
.avatar-frame .inner .avatar-tag{
  position:absolute; left:18px; bottom:18px; z-index:2;
  padding:9px 16px; border-radius:100px; font-size:12px; font-weight:800; letter-spacing:.04em;
  color:#fff; background:rgba(20,10,35,.45);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  border:1px solid rgba(255,255,255,.35);
}
.avatar-frame .inner::after{
  content:""; position:absolute; inset:0; z-index:1;
  background:linear-gradient(180deg, transparent 55%, rgba(10,5,20,.55) 100%);
}
.about-copy p{ color:var(--ink-soft); font-size:16px; line-height:1.85; margin-bottom:18px; }
.stat-row{ display:flex; gap:36px; margin-top:32px; flex-wrap:wrap; }
.stat b{ display:block; font-family:var(--ff-display); font-size:30px; font-weight:800;
  background:var(--grad); -webkit-background-clip:text; background-clip:text; color:transparent; }
.stat span{ font-size:12px; color:var(--ink-soft); letter-spacing:.05em; text-transform:uppercase; }

/* ============ SKILLS ============ */
.skill-grid{ display:flex; flex-wrap:wrap; gap:12px; }
.skill-chip{
  padding:12px 20px; border-radius:14px;
  background: linear-gradient(155deg, var(--glass-highlight), var(--glass-bg) 45%, var(--glass-bg-soft));
  -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
  border:1px solid var(--glass-border); box-shadow: var(--glass-shadow);
  font-size:14px; font-weight:600; display:flex; align-items:center; gap:10px;
  transition:transform .3s ease, border-color .3s ease, background .3s ease;
}
.skill-chip:hover{ transform:translateY(-4px); border-color:var(--purple-2); }
.skill-chip i{ width:8px; height:8px; border-radius:50%; background:var(--grad); flex:none; }

/* ============ PROJECTS ============ */
.projects-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
@media (max-width:980px){ .projects-grid{ grid-template-columns:1fr; } }
.project-card{
  position:relative; border-radius:22px; overflow:hidden;
  background: linear-gradient(155deg, var(--glass-highlight), var(--glass-bg) 45%, var(--glass-bg-soft));
  -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
  border:1px solid var(--glass-border); box-shadow: var(--glass-shadow);
  transition:transform .4s cubic-bezier(.16,1,.3,1), box-shadow .4s ease;
  display:flex; flex-direction:column; min-height:290px;
}
.project-card:hover{ transform:translateY(-8px); box-shadow:var(--shadow); }
.project-thumb{ position:relative; aspect-ratio:16/10; overflow:hidden; }
.project-thumb img{ width:100%; height:100%; object-fit:cover; transition:transform .6s cubic-bezier(.16,1,.3,1); }
.project-card:hover .project-thumb img{ transform:scale(1.06); }
.project-thumb::after{ content:""; position:absolute; inset:0; background:linear-gradient(180deg, transparent 55%, rgba(10,5,20,.45) 100%); }
.project-body{ padding:24px 26px 28px; display:flex; flex-direction:column; flex:1; }
.project-num{ font-family:var(--ff-display); font-size:13px; font-weight:700; color:var(--purple-2); margin-bottom:14px; }
.project-card h3{ font-family:var(--ff-display); font-size:21px; font-weight:700; margin:0 0 12px; }
.project-card p{ color:var(--ink-soft); font-size:14px; line-height:1.7; flex:1; }
.project-tags{ display:flex; gap:8px; flex-wrap:wrap; margin-top:18px; }
.project-tags span{ font-size:11px; font-weight:700; padding:5px 10px; border-radius:8px; background:var(--bg); border:1px solid var(--card-border); }
.project-arrow{
  position:absolute; top:24px; right:24px; width:36px; height:36px; border-radius:50%;
  background:var(--grad); display:flex; align-items:center; justify-content:center;
  transform:scale(0) rotate(-40deg); transition:transform .35s cubic-bezier(.34,1.6,.64,1);
  box-shadow: 0 6px 16px rgba(109,40,217,.4);
}
.project-card:hover .project-arrow{ transform:scale(1) rotate(0deg); }
.project-arrow svg{ width:16px; height:16px; stroke:#fff; }

/* ============ CONTACT ============ */
.contact-box{
  border-radius:32px; padding:64px 48px; text-align:center; position:relative; overflow:hidden;
  background: linear-gradient(155deg, var(--glass-highlight), var(--glass-bg) 45%, var(--glass-bg-soft));
  -webkit-backdrop-filter: var(--glass-blur-strong); backdrop-filter: var(--glass-blur-strong);
  border:1px solid var(--glass-border); box-shadow: var(--glass-shadow);
}
.contact-box::before{
  content:""; position:absolute; width:480px; height:480px; border-radius:50%;
  background:var(--grad); opacity:.18; filter:blur(80px); top:-200px; left:50%; transform:translateX(-50%);
}
.contact-box h2{ font-family:var(--ff-display); font-size:clamp(30px,5vw,54px); font-weight:800; margin:0 0 18px; position:relative; }
.contact-box p{ color:var(--ink-soft); max-width:480px; margin:0 auto 34px; position:relative; }
.contact-links{ display:flex; gap:14px; justify-content:center; flex-wrap:wrap; position:relative; }

/* ============ FOOTER ============ */
footer{ padding:38px 0; border-top:1px solid var(--grid-line-strong); }
.footer-inner{ display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:14px; font-size:13px; color:var(--ink-soft); }
.footer-inner .socials{ display:flex; gap:16px; }
.footer-inner .socials a{ color:var(--ink-soft); transition:color .25s ease; }
.footer-inner .socials a:hover{ color:var(--purple-2); }

/* ============ REDUCED MOTION ============ */
@media (prefers-reduced-motion: reduce){
  *{ animation-duration:.001ms !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}

/* ============ SINGLE-FILE PAGE VIEWS ============ */
.page-view{ display:none; }
.page-view.active{ display:block; }

/* ============ CURRENT-PAGE NAV STATE ============ */
.nav-links a.active-link, #mobile-menu a.active-link{ color:var(--purple-1); }
.nav-links a.active-link::after{ width:100%; }

/* ============ SHARED: SUBPAGE HERO ============ */
.page-hero{ padding:150px 0 40px; }
.page-hero .tag{ display:block; margin-bottom:14px; }
.page-hero h1{
  font-family:var(--ff-display); font-weight:800; line-height:1.04;
  font-size:clamp(34px,6vw,64px); margin:0 0 16px; letter-spacing:-0.01em;
}
.page-hero p{ color:var(--ink-soft); font-size:16px; line-height:1.7; max-width:600px; }
.crumb{ display:flex; align-items:center; gap:8px; font-size:13px; color:var(--ink-soft); margin-bottom:18px; }
.crumb a{ color:var(--purple-1); font-weight:700; }
.crumb svg{ width:13px; height:13px; opacity:.6; }

/* ============ CARD HOVER (flat, no 3D) ============ */
.tilt{
  transition:transform .35s cubic-bezier(.16,1,.3,1), box-shadow .35s ease;
}
.tilt-inner{ transition:transform .35s cubic-bezier(.16,1,.3,1); }
@media (hover:hover) and (pointer:fine){
  .tilt:hover{ transform:translateY(-6px); box-shadow:var(--shadow); }
}

/* ============ CONTACT PAGE ============ */
.contact-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:22px; margin-top:8px; }
@media (max-width:720px){ .contact-grid{ grid-template-columns:1fr; } }
.contact-card{
  position:relative; border-radius:24px; padding:32px; overflow:hidden;
  background: linear-gradient(155deg, var(--glass-highlight), var(--glass-bg) 45%, var(--glass-bg-soft));
  -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
  border:1px solid var(--glass-border); box-shadow: var(--glass-shadow);
  display:flex; flex-direction:column; gap:16px;
}
.contact-card .c-icon{
  width:56px; height:56px; border-radius:16px; background:var(--grad);
  display:flex; align-items:center; justify-content:center; flex:none;
  box-shadow:0 14px 26px rgba(109,40,217,.35);
}
.contact-card .c-icon svg{ width:26px; height:26px; stroke:#fff; fill:none; }
.contact-card h3{ font-family:var(--ff-display); font-size:19px; font-weight:700; margin:0; }
.contact-card p{ color:var(--ink-soft); font-size:14px; line-height:1.6; margin:0; flex:1; }
.contact-card .c-cta{
  align-self:flex-start; font-size:13px; font-weight:800; color:var(--purple-1);
  display:inline-flex; align-items:center; gap:6px;
}
.contact-card .c-cta svg{ width:14px; height:14px; transition:transform .3s ease; }
.contact-card:hover .c-cta svg{ transform:translateX(4px); }

.contact-direct{
  border-radius:32px; padding:56px 44px; text-align:center; position:relative; overflow:hidden;
  background: linear-gradient(155deg, var(--glass-highlight), var(--glass-bg) 45%, var(--glass-bg-soft));
  -webkit-backdrop-filter: var(--glass-blur-strong); backdrop-filter: var(--glass-blur-strong);
  border:1px solid var(--glass-border); box-shadow: var(--glass-shadow); margin-bottom:48px;
}
.contact-direct::before{
  content:""; position:absolute; width:480px; height:480px; border-radius:50%;
  background:var(--grad); opacity:.16; filter:blur(90px); top:-220px; left:50%; transform:translateX(-50%);
}
.contact-direct h2{ font-family:var(--ff-display); font-size:clamp(26px,4vw,42px); font-weight:800; margin:0 0 14px; position:relative; }
.contact-direct p{ color:var(--ink-soft); max-width:480px; margin:0 auto 30px; position:relative; }
.contact-direct .btn-row{ display:flex; gap:14px; justify-content:center; flex-wrap:wrap; position:relative; }

/* ============ EBOOKS PAGE ============ */
.ebook-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:26px; }
@media (max-width:980px){ .ebook-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:640px){ .ebook-grid{ grid-template-columns:1fr; } }
.ebook-card{
  border-radius:22px; overflow:hidden;
  background: linear-gradient(155deg, var(--glass-highlight), var(--glass-bg) 45%, var(--glass-bg-soft));
  -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
  border:1px solid var(--glass-border); box-shadow: var(--glass-shadow);
  display:flex; flex-direction:column;
}
.ebook-thumb{
  aspect-ratio:3/4; position:relative; overflow:hidden;
  background:var(--grad); display:flex; align-items:center; justify-content:center;
}
.ebook-thumb img{ width:100%; height:100%; object-fit:cover; }
.ebook-thumb .ph-icon{ width:54px; height:54px; opacity:.9; }
.ebook-thumb .ph-icon svg{ width:100%; height:100%; stroke:#fff; fill:none; stroke-width:1.4; }
.ebook-thumb::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(180deg, transparent 40%, rgba(0,0,0,.55) 100%);
}
.ebook-badge{
  position:absolute; top:14px; left:14px; z-index:2;
  background:rgba(255,255,255,.92); color:var(--purple-1);
  font-size:10px; font-weight:800; letter-spacing:.06em; text-transform:uppercase;
  padding:5px 10px; border-radius:20px;
}
.ebook-body{ padding:22px 22px 24px; display:flex; flex-direction:column; gap:10px; flex:1; }
.ebook-body h3{ font-family:var(--ff-display); font-size:18px; font-weight:700; margin:0; }
.ebook-body p{ color:var(--ink-soft); font-size:13.5px; line-height:1.6; margin:0; flex:1; }
.ebook-get{
  margin-top:6px; display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:13px 20px; border-radius:100px; font-weight:700; font-size:13px;
  background:var(--grad); color:#fff; box-shadow:0 12px 26px rgba(147,51,234,.3);
  transition:transform .3s ease, box-shadow .3s ease;
}
.ebook-get:hover{ transform:translateY(-3px); box-shadow:0 18px 34px rgba(147,51,234,.42); }
.ebook-get svg{ width:15px; height:15px; }

/* ============ COURSES PAGE ============ */
.course-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:26px; }
@media (max-width:980px){ .course-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:640px){ .course-grid{ grid-template-columns:1fr; } }
.course-card{
  border-radius:22px; overflow:hidden;
  background: linear-gradient(155deg, var(--glass-highlight), var(--glass-bg) 45%, var(--glass-bg-soft));
  -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
  border:1px solid var(--glass-border); box-shadow: var(--glass-shadow);
  display:flex; flex-direction:column; cursor:pointer;
  transition:transform .35s cubic-bezier(.16,1,.3,1), box-shadow .35s ease;
}
.course-card:hover{ transform:translateY(-6px); box-shadow:var(--shadow); }
.course-thumb{
  aspect-ratio:16/10; position:relative; overflow:hidden; background:var(--grad);
  display:flex; align-items:center; justify-content:center;
}
.course-thumb img{ width:100%; height:100%; object-fit:cover; }
.course-thumb::after{ content:""; position:absolute; inset:0; background:linear-gradient(180deg, transparent 45%, rgba(0,0,0,.5) 100%); }
.course-play{
  width:58px; height:58px; border-radius:50%; background:rgba(255,255,255,.94);
  display:flex; align-items:center; justify-content:center; position:relative; z-index:2;
  transition:transform .3s ease;
  box-shadow:0 14px 30px rgba(0,0,0,.3);
}
.course-card:hover .course-play{ transform:scale(1.1); }
.course-play svg{ width:22px; height:22px; fill:var(--purple-1); margin-left:3px; }
.course-badge{
  position:absolute; top:14px; left:14px; z-index:2;
  background:rgba(255,255,255,.92); color:var(--purple-1);
  font-size:10px; font-weight:800; letter-spacing:.06em; text-transform:uppercase;
  padding:5px 10px; border-radius:20px;
}
.course-body{ padding:22px; display:flex; flex-direction:column; gap:10px; flex:1; }
.course-body h3{ font-family:var(--ff-display); font-size:18px; font-weight:700; margin:0; }
.course-body p{ color:var(--ink-soft); font-size:13.5px; line-height:1.6; margin:0; flex:1; }
.course-meta{ font-size:12px; font-weight:700; color:var(--purple-2); display:flex; align-items:center; gap:6px; }
.course-get{
  margin-top:4px; display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:13px 20px; border-radius:100px; font-weight:700; font-size:13px;
  border:1px solid var(--card-border); color:var(--ink);
  transition:transform .3s ease, border-color .3s ease;
}
.course-get:hover{ transform:translateY(-3px); border-color:var(--purple-2); }

/* ---- course detail (modules + player) ---- */
.course-detail{
  display:none; border-radius:28px; padding:36px;
  background: linear-gradient(155deg, var(--glass-highlight), var(--glass-bg) 45%, var(--glass-bg-soft));
  -webkit-backdrop-filter: var(--glass-blur-strong); backdrop-filter: var(--glass-blur-strong);
  border:1px solid var(--glass-border); box-shadow: var(--glass-shadow);
  margin-top:44px;
}
.course-detail.open{ display:block; }
.course-detail-head{ display:flex; align-items:center; justify-content:space-between; gap:20px; flex-wrap:wrap; margin-bottom:26px; }
.course-detail-head h2{ font-family:var(--ff-display); font-size:clamp(22px,3vw,30px); font-weight:800; margin:0 0 6px; }
.course-detail-head p{ color:var(--ink-soft); font-size:14px; margin:0; max-width:480px; }
.close-detail{
  border:1px solid var(--card-border); background:var(--card-bg); color:var(--ink);
  width:38px; height:38px; border-radius:50%; display:flex; align-items:center; justify-content:center;
  transition:transform .25s ease, background .25s ease; flex:none;
}
.close-detail:hover{ transform:rotate(90deg); background:var(--purple-2); color:#fff; }
.close-detail svg{ width:16px; height:16px; }

.video-frame{
  position:relative; width:100%; aspect-ratio:16/9; border-radius:18px; overflow:hidden;
  background:#000; margin-bottom:26px; box-shadow:var(--shadow);
}
.video-frame iframe{ position:absolute; inset:0; width:100%; height:100%; border:0; }
.video-frame .video-placeholder{
  position:absolute; inset:0; display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap:12px; color:#fff; background:linear-gradient(135deg, var(--purple-1), var(--purple-2));
}
.video-placeholder svg{ width:52px; height:52px; opacity:.9; }
.video-placeholder span{ font-size:13px; font-weight:700; letter-spacing:.04em; opacity:.9; }

.module-list{ display:flex; flex-direction:column; gap:10px; }
.module-item{
  display:flex; align-items:center; gap:16px; padding:16px 18px; border-radius:14px;
  background: linear-gradient(155deg, var(--glass-highlight), var(--glass-bg-soft));
  -webkit-backdrop-filter: blur(14px) saturate(160%); backdrop-filter: blur(14px) saturate(160%);
  border:1px solid var(--glass-border); cursor:pointer;
  transition:transform .25s ease, border-color .25s ease, background .25s ease;
}
.module-item:hover{ transform:translateX(6px); border-color:var(--purple-2); }
.module-item.active{ border-color:var(--purple-2); background: linear-gradient(155deg, var(--glass-highlight), var(--glass-bg) 45%, var(--glass-bg-soft)); }
.module-num{
  width:32px; height:32px; border-radius:50%; background:var(--grad); color:#fff; flex:none;
  display:flex; align-items:center; justify-content:center; font-size:12px; font-weight:800; font-family:var(--ff-display);
}
.module-item .m-title{ font-size:14.5px; font-weight:700; flex:1; }
.module-item .m-play{ width:26px; height:26px; flex:none; opacity:.55; transition:opacity .25s ease; }
.module-item:hover .m-play, .module-item.active .m-play{ opacity:1; }
.module-item .m-play svg{ width:100%; height:100%; stroke:var(--purple-1); fill:none; }

/* ============ ENHANCED FOOTER ============ */
footer{ padding:0; border-top:1px solid var(--grid-line-strong); }
.footer-top{ padding:64px 0 44px; }
.footer-grid{ display:grid; grid-template-columns:1.3fr 1fr 1fr; gap:40px; }
@media (max-width:720px){ .footer-grid{ grid-template-columns:1fr; gap:32px; } }
.footer-brand .logo{ margin-bottom:14px; display:inline-block; }
.footer-brand p{ color:var(--ink-soft); font-size:14px; line-height:1.7; max-width:320px; margin:0; }
.footer-col h4{ font-size:12px; font-weight:800; letter-spacing:.1em; text-transform:uppercase; color:var(--purple-1); margin:0 0 16px; }
.footer-col ul{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:12px; }
.footer-col a{ font-size:14px; color:var(--ink-soft); transition:color .25s ease, transform .25s ease; display:inline-block; }
.footer-col a:hover{ color:var(--purple-2); transform:translateX(4px); }
.footer-bottom{ border-top:1px solid var(--grid-line); padding:22px 0 34px; }
.footer-inner{ display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:14px; font-size:13px; color:var(--ink-soft); }
.footer-inner .socials{ display:flex; gap:16px; }
.footer-inner .socials a{ color:var(--ink-soft); transition:color .25s ease, transform .25s ease; display:flex; }
.footer-inner .socials a:hover{ color:var(--purple-2); transform:translateY(-3px); }
.footer-inner .socials svg{ width:18px; height:18px; }

.back-to-top{
  position:fixed; right:24px; bottom:24px; z-index:400;
  width:48px; height:48px; border-radius:50%; background:var(--grad); color:#fff;
  display:flex; align-items:center; justify-content:center; box-shadow:0 14px 30px rgba(109,40,217,.4);
  opacity:0; pointer-events:none; transform:translateY(16px) scale(.8);
  transition:opacity .3s ease, transform .3s ease;
}
.back-to-top.show{ opacity:1; pointer-events:auto; transform:translateY(0) scale(1); }
.back-to-top:hover{ transform:translateY(-4px) scale(1.05); }
.back-to-top svg{ width:19px; height:19px; }


/* ============ FILTER SYSTEM (category chips + tier chips) ============ */
.filter-bar{ display:flex; flex-direction:column; gap:20px; margin-bottom:44px; }
.filter-block .filter-label{
  font-size:11px; font-weight:800; letter-spacing:.14em; text-transform:uppercase;
  color:var(--ink-soft); margin:0 0 12px;
}
.filter-row{ display:flex; gap:10px; flex-wrap:wrap; align-items:center; }
.filter-chip{
  display:inline-flex; align-items:center; gap:8px;
  padding:10px 18px; border-radius:100px; cursor:pointer;
  font-size:13.5px; font-weight:700; color:var(--ink); line-height:1;
  background: linear-gradient(155deg, var(--glass-highlight), var(--glass-bg) 45%, var(--glass-bg-soft));
  -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
  border:1px solid var(--glass-border); box-shadow: var(--glass-shadow);
  transition: transform .25s ease, background .25s ease, color .25s ease, border-color .25s ease, box-shadow .25s ease;
  white-space:nowrap;
}
.filter-chip:hover{ transform:translateY(-2px); border-color:var(--purple-2); color:var(--purple-1); }
.filter-chip.active{
  background:var(--grad); color:#fff; border-color:transparent;
  box-shadow:0 12px 26px rgba(147,51,234,.34);
}
.filter-chip .count{ font-size:10.5px; font-weight:800; opacity:.65; }
.filter-chip.active .count{ opacity:.95; }
.filter-chip .tier-dot{ width:7px; height:7px; border-radius:50%; background:currentColor; opacity:.6; }
.filter-chip.active .tier-dot{ opacity:1; }

.filter-search{ display:flex; gap:10px; flex-wrap:wrap; align-items:center; margin-top:2px; }
.filter-search .search-field{
  flex:1 1 220px; min-width:180px; position:relative;
}
.filter-search input[type="search"]{
  width:100%; padding:12px 18px; border-radius:100px; font-family:inherit; font-size:14px;
  color:var(--ink); border:1px solid var(--glass-border);
  background: linear-gradient(155deg, var(--glass-highlight), var(--glass-bg-soft));
  -webkit-backdrop-filter: blur(12px) saturate(160%); backdrop-filter: blur(12px) saturate(160%);
  outline:none; transition:border-color .25s ease;
}
.filter-search input[type="search"]:focus{ border-color:var(--purple-2); }
.filter-clear{
  font-size:13px; font-weight:800; color:var(--purple-1);
  display:inline-flex; align-items:center; gap:6px; padding:12px 4px;
}
.filter-clear:hover{ text-decoration:underline; }
.result-count{ font-size:13px; color:var(--ink-soft); font-weight:600; }

@media (max-width:720px){
  .filter-bar{ gap:16px; margin-bottom:32px; }
  .filter-row{ gap:8px; }
  .filter-chip{ padding:9px 14px; font-size:12.5px; }
}

/* ============ PROJECT CARD EXTRAS ============ */
.project-thumb .media-pill{
  position:absolute; top:14px; left:14px; z-index:3;
  display:inline-flex; align-items:center; gap:6px;
  background:rgba(255,255,255,.92); color:var(--purple-1);
  font-size:10px; font-weight:800; letter-spacing:.06em; text-transform:uppercase;
  padding:5px 10px; border-radius:20px;
}
.project-thumb .media-pill svg{ width:11px; height:11px; }
.project-thumb .tier-pill{
  position:absolute; top:14px; right:14px; z-index:3;
  font-size:10px; font-weight:800; letter-spacing:.06em; text-transform:uppercase;
  padding:5px 10px; border-radius:20px; color:#fff;
  background:rgba(20,10,35,.5); border:1px solid rgba(255,255,255,.35);
  -webkit-backdrop-filter:blur(8px); backdrop-filter:blur(8px);
}
.project-thumb .tier-pill.premium{ background:var(--grad); border-color:transparent; }
.project-card.is-link{ cursor:pointer; }
.project-cat{
  font-size:11px; font-weight:800; letter-spacing:.08em; text-transform:uppercase;
  color:var(--purple-1); margin-bottom:8px; display:block;
}

/* ============ MEDIA MODAL / LIGHTBOX ============ */
.media-modal{
  position:fixed; inset:0; z-index:900; display:none;
  align-items:center; justify-content:center; padding:22px;
  background:rgba(10,5,20,.7);
  -webkit-backdrop-filter:blur(12px); backdrop-filter:blur(12px);
}
.media-modal.open{ display:flex; }
.media-modal .modal-card{
  width:100%; max-width:980px; max-height:90vh; overflow:auto; border-radius:26px; padding:22px;
  background: linear-gradient(155deg, var(--glass-highlight), var(--glass-bg) 45%, var(--glass-bg-soft));
  -webkit-backdrop-filter: var(--glass-blur-strong); backdrop-filter: var(--glass-blur-strong);
  border:1px solid var(--glass-border); box-shadow:var(--shadow);
  position:relative;
}
html[data-theme="dark"] .media-modal .modal-card{ background:#120c1f; }
.media-modal .modal-head{ display:flex; align-items:flex-start; justify-content:space-between; gap:18px; margin-bottom:16px; }
.media-modal h3{ font-family:var(--ff-display); font-size:clamp(18px,2.6vw,24px); font-weight:800; margin:0 0 6px; }
.media-modal .modal-desc{ color:var(--ink-soft); font-size:14px; line-height:1.65; margin:0; }
.media-modal .modal-close{
  width:38px; height:38px; border-radius:50%; flex:none; cursor:pointer;
  border:1px solid var(--card-border); background:var(--card-bg); color:var(--ink);
  display:flex; align-items:center; justify-content:center;
  transition:transform .25s ease, background .25s ease, color .25s ease;
}
.media-modal .modal-close:hover{ transform:rotate(90deg); background:var(--purple-2); color:#fff; }
.media-modal .modal-close svg{ width:16px; height:16px; }
.media-frame{
  position:relative; width:100%; aspect-ratio:16/9; border-radius:18px; overflow:hidden;
  background:#07030f; box-shadow:var(--shadow);
}
.media-frame iframe{ position:absolute; inset:0; width:100%; height:100%; border:0; }
.media-frame img{ width:100%; height:100%; object-fit:contain; background:#07030f; }
.media-modal .modal-foot{ display:flex; gap:12px; flex-wrap:wrap; align-items:center; margin-top:18px; }
.media-modal .modal-tags{ display:flex; gap:8px; flex-wrap:wrap; margin-top:14px; }
.media-modal .modal-tags span{
  font-size:11px; font-weight:700; padding:5px 10px; border-radius:8px;
  background:var(--bg); border:1px solid var(--card-border);
}

/* ============ PAGINATION ============ */
.pagination-wrap{ display:flex; justify-content:center; margin-top:52px; }
.pagination{ display:flex; gap:8px; flex-wrap:wrap; list-style:none; margin:0; padding:0; align-items:center; }
.pagination a, .pagination span{
  min-width:42px; height:42px; padding:0 14px; border-radius:14px;
  display:inline-flex; align-items:center; justify-content:center;
  font-size:13.5px; font-weight:700; color:var(--ink);
  background: linear-gradient(155deg, var(--glass-highlight), var(--glass-bg-soft));
  border:1px solid var(--glass-border); box-shadow: var(--glass-shadow);
  transition:transform .25s ease, border-color .25s ease, background .25s ease;
}
.pagination a:hover{ transform:translateY(-2px); border-color:var(--purple-2); color:var(--purple-1); }
.pagination .current{ background:var(--grad); color:#fff; border-color:transparent; box-shadow:0 12px 26px rgba(147,51,234,.3); }
.pagination .disabled{ opacity:.45; pointer-events:none; }
.pagination .dots{ border:none; background:none; box-shadow:none; min-width:auto; }

/* ============ EMPTY STATE ============ */
.empty-state{
  text-align:center; padding:64px 24px; border-radius:26px;
  background: linear-gradient(155deg, var(--glass-highlight), var(--glass-bg-soft));
  border:1px dashed var(--card-border);
}
.empty-state h3{ font-family:var(--ff-display); font-size:20px; margin:0 0 10px; }
.empty-state p{ color:var(--ink-soft); font-size:14.5px; margin:0 0 20px; }

/* ============ PROJECT DETAIL PAGE ============ */
.detail-layout{ display:grid; grid-template-columns:1.55fr 1fr; gap:36px; align-items:start; }
@media (max-width:980px){ .detail-layout{ grid-template-columns:1fr; gap:26px; } }
.detail-panel{
  border-radius:26px; padding:30px;
  background: linear-gradient(155deg, var(--glass-highlight), var(--glass-bg) 45%, var(--glass-bg-soft));
  -webkit-backdrop-filter: var(--glass-blur); backdrop-filter: var(--glass-blur);
  border:1px solid var(--glass-border); box-shadow:var(--glass-shadow);
}
.detail-panel h3{ font-family:var(--ff-display); font-size:16px; font-weight:800; margin:0 0 16px; }
.detail-meta{ display:flex; flex-direction:column; gap:14px; }
.detail-meta .row{ display:flex; justify-content:space-between; gap:14px; font-size:14px; border-bottom:1px solid var(--grid-line); padding-bottom:12px; }
.detail-meta .row:last-child{ border-bottom:none; padding-bottom:0; }
.detail-meta .row span:first-child{ color:var(--ink-soft); font-weight:600; }
.detail-meta .row span:last-child{ font-weight:700; text-align:right; }
.prose{ color:var(--ink-soft); font-size:15.5px; line-height:1.85; }
.prose p{ margin:0 0 16px; }