/* ============================================================
   Aryan Pandey — portfolio design system
   Theme: content on glass, over a rainy foggy-forest backdrop.
   ============================================================ */

/* ---- tokens ---- */
:root {
  /* forest-derived palette */
  --bg:        #0c0f0e;
  --ink:       #eef2ef;   /* primary text */
  --ink-soft:  #c2ccc6;
  --ink-mute:  #95a39b;   /* muted text */
  --amber:     #d6a05c;   /* bark accent */
  --amber-2:   #ecc188;
  --moss:      #8fb19a;

  /* glass */
  --glass-bg:    rgba(18, 24, 21, 0.42);
  --glass-bg-2:  rgba(18, 24, 21, 0.30);
  --glass-brd:   rgba(255, 255, 255, 0.12);
  --glass-hi:    rgba(255, 255, 255, 0.35);
  --glass-blur:  16px;

  /* type */
  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --serif: "Newsreader", Georgia, "Times New Roman", serif;

  /* rhythm */
  --maxw: 1120px;
  --gap: clamp(1rem, 2.5vw, 2rem);
  --radius: 18px;
  --radius-sm: 12px;

  --shadow: 0 18px 50px -20px rgba(0, 0, 0, 0.7);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  font-size: clamp(1rem, 0.95rem + 0.2vw, 1.075rem);
  letter-spacing: 0.01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ---- backdrop ---- */
#rain-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: -2;
  display: block;
}
/* legibility scrim + top/bottom fades */
.backdrop-scrim {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(120% 90% at 50% 0%, rgba(8, 11, 10, 0) 40%, rgba(8, 11, 10, 0.55) 100%),
    linear-gradient(180deg, rgba(8, 11, 10, 0.30) 0%, rgba(8, 11, 10, 0) 22%);
}
/* if WebGL is missing, show the forest as a static bg */
.no-rain body { background: #0c0f0e url("/assets/images/foggy_forest.jpg") center/cover fixed no-repeat; }
.no-rain #rain-canvas { display: none; }

/* ---- layout ---- */
.wrap { width: min(100% - 2.4rem, var(--maxw)); margin-inline: auto; }
.section { padding-block: clamp(4rem, 9vw, 7.5rem); }
.section-head { margin-bottom: clamp(1.6rem, 4vw, 2.8rem); }
/* offset anchor jumps so headings aren't hidden under the fixed nav */
[id] { scroll-margin-top: 88px; }
/* inner pages: give the first section room below the nav */
main > .section:first-of-type { padding-top: clamp(6rem, 12vw, 8rem); }
.eyebrow {
  font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.28em;
  color: var(--amber); margin: 0 0 0.6rem;
}
h1, h2, h3 { line-height: 1.1; font-weight: 600; letter-spacing: -0.02em; margin: 0 0 0.5em; }
h2 { font-size: clamp(1.7rem, 1.2rem + 2.2vw, 2.8rem); }
h3 { font-size: clamp(1.15rem, 1rem + 0.7vw, 1.4rem); }
p { margin: 0 0 1rem; color: var(--ink-soft); }
a { color: var(--amber-2); text-decoration: none; transition: color 0.25s var(--ease); }
a:hover { color: #fff; }
.lead { font-size: clamp(1.05rem, 1rem + 0.55vw, 1.3rem); color: var(--ink); max-width: 60ch; }
.muted { color: var(--ink-mute); }
.serif { font-family: var(--serif); font-style: italic; }
img { max-width: 100%; }

/* skip link (a11y) */
.skip-link {
  position: fixed; top: -120px; left: 1rem; z-index: 200;
  background: var(--amber); color: #1a130a; font-weight: 600;
  padding: 0.6rem 1rem; border-radius: 8px; transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 1rem; }
:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }

/* ---- glass surface ---- */
.glass {
  position: relative;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(1.1);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(1.1);
  border: 1px solid var(--glass-brd);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
/* meniscus: a wet highlight along the top edge */
.glass::before {
  content: "";
  position: absolute; inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(180deg, var(--glass-hi), rgba(255, 255, 255, 0) 35%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events: none;
}

/* ---- buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.7rem 1.25rem;
  border-radius: 999px;
  font-weight: 500; font-size: 0.95rem;
  color: var(--ink);
  background: var(--glass-bg-2);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-brd);
  cursor: pointer;
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease), background 0.25s var(--ease);
}
.btn:hover { transform: translateY(-2px); border-color: var(--amber); background: rgba(214, 160, 92, 0.14); color: #fff; }
.btn--solid { background: var(--amber); color: #1a130a; border-color: transparent; font-weight: 600; }
.btn--solid:hover { background: var(--amber-2); color: #1a130a; }

/* ---- header / nav ---- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; justify-content: center;
  padding: 0.9rem 1rem;
  transition: transform 0.4s var(--ease);
}
.nav {
  display: flex; align-items: center; gap: clamp(0.4rem, 1.6vw, 1.2rem);
  padding: 0.5rem 0.6rem 0.5rem 1.1rem;
  border-radius: 999px;
}
.nav .brand { font-weight: 600; letter-spacing: -0.01em; color: var(--ink); margin-right: 0.4rem; }
.nav a:not(.brand):not(.btn) {
  color: var(--ink-soft); font-size: 0.92rem; font-weight: 500;
  padding: 0.35rem 0.7rem; border-radius: 999px; position: relative;
}
.nav a:not(.brand):not(.btn):hover { color: #fff; }
.nav a.active { color: #fff; background: rgba(255,255,255,0.08); }
.nav-toggle { display: none; align-items: center; justify-content: center; background: none; border: 0; color: var(--ink); cursor: pointer; padding: 0.35rem; border-radius: 999px; }
.nav-links { display: contents; }

.site-header.hide { transform: translateY(-130%); }

/* ---- hero ---- */
.hero {
  min-height: 100svh;
  display: grid; align-items: center;
  position: relative;
}
.hero-inner { max-width: 48rem; }
.hero h1 {
  font-size: clamp(3rem, 1.5rem + 9vw, 8rem);
  font-weight: 600; letter-spacing: -0.04em; line-height: 0.98;
  margin: 0.2rem 0 0.8rem;
}
.hero .lead { margin-bottom: 1.8rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; }
.scroll-cue {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  color: var(--ink-mute); font-size: 0.78rem; letter-spacing: 0.2em; text-transform: uppercase;
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
}
.scroll-cue::after { content: ""; width: 1px; height: 38px; background: linear-gradient(var(--ink-mute), transparent); animation: cue 2.2s var(--ease) infinite; }
@keyframes cue { 0% { opacity: 0; transform: scaleY(0.3); transform-origin: top; } 50% { opacity: 1; } 100% { opacity: 0; transform: scaleY(1); transform-origin: bottom; } }

/* ---- cards / grids ---- */
.grid { display: grid; gap: var(--gap); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }

.card { padding: clamp(1.4rem, 3vw, 2rem); transition: transform 0.35s var(--ease); }
.card:hover { transform: translateY(-4px); }
.card h3 { margin-bottom: 0.4rem; }
.card .tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 1rem; }
.tag {
  font-size: 0.72rem; letter-spacing: 0.05em; text-transform: uppercase;
  padding: 0.25rem 0.6rem; border-radius: 999px;
  color: var(--moss); border: 1px solid rgba(143, 177, 154, 0.35);
}

/* about layout */
.about-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: var(--gap); align-items: start; }
.about-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.9rem; }
.about-list li { padding-left: 1.1rem; position: relative; color: var(--ink-soft); }
.about-list li::before { content: ""; position: absolute; left: 0; top: 0.65em; width: 6px; height: 6px; border-radius: 50%; background: var(--amber); }

/* ---- gallery (masonry) ---- */
.gallery { columns: 3 240px; column-gap: var(--gap); }
.gallery figure { margin: 0 0 var(--gap); break-inside: avoid; border-radius: var(--radius-sm); overflow: hidden; cursor: zoom-in; position: relative; }
.gallery img { width: 100%; display: block; transition: transform 0.5s var(--ease), filter 0.5s var(--ease); filter: saturate(0.95); }
.gallery figure:hover img { transform: scale(1.04); filter: saturate(1.1); }
.gallery figcaption {
  position: absolute; inset: auto 0 0 0; padding: 1.4rem 0.9rem 0.7rem;
  font-size: 0.82rem; color: #fff; opacity: 0; transition: opacity 0.35s var(--ease);
  background: linear-gradient(transparent, rgba(0,0,0,0.6));
}
.gallery figure:hover figcaption { opacity: 1; }

/* ---- blog list ---- */
.post-list { display: grid; gap: var(--gap); }
.post-card { padding: clamp(1.3rem, 3vw, 1.8rem); display: block; }
.post-card:hover { transform: translateY(-3px); }
.post-card h3 { margin-bottom: 0.3rem; }
.post-meta { font-size: 0.82rem; color: var(--ink-mute); margin-bottom: 0.6rem; letter-spacing: 0.03em; }
.read-more { font-weight: 500; font-size: 0.9rem; }

/* article (single post) */
.post { max-width: 44rem; margin-inline: auto; padding: clamp(1.6rem, 4vw, 3rem); }
.post-header { margin-bottom: 1.5rem; }
.post-title { font-size: clamp(1.9rem, 1.4rem + 2.5vw, 3rem); }
.post-content { font-size: 1.07rem; color: var(--ink-soft); }
.post-content h2 { margin-top: 2rem; color: var(--ink); }
.post-content img { border-radius: var(--radius-sm); margin: 1.5rem 0; }
.post-content blockquote { border-left: 2px solid var(--amber); margin: 1.5rem 0; padding-left: 1.2rem; font-family: var(--serif); font-style: italic; color: var(--ink); }
.post-content code { background: rgba(255,255,255,0.08); padding: 0.1em 0.4em; border-radius: 6px; font-size: 0.9em; }
.post-content pre { background: rgba(0,0,0,0.4); padding: 1rem; border-radius: var(--radius-sm); overflow: auto; }
.post-content pre code { background: none; padding: 0; }

/* ---- footer / contact ---- */
.site-footer { padding-block: clamp(3rem, 7vw, 5rem) 3rem; text-align: center; }
.socials { display: flex; justify-content: center; gap: 0.8rem; margin: 1.2rem 0; flex-wrap: wrap; }
.social {
  width: 44px; height: 44px; display: grid; place-items: center; border-radius: 50%;
  color: var(--ink-soft); font-size: 1.05rem;
  border: 1px solid var(--glass-brd); background: var(--glass-bg-2);
  transition: transform 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}
.social:hover { color: #fff; border-color: var(--amber); transform: translateY(-3px); }
.copyright { font-size: 0.82rem; color: var(--ink-mute); margin-top: 1.5rem; }

/* ---- scene switcher ---- */
.scene-switcher {
  position: fixed; right: 1rem; bottom: 1rem; z-index: 40;
  display: flex; gap: 0.15rem; padding: 0.3rem; border-radius: 999px;
}
.scene-btn {
  display: grid; place-items: center;
  background: none; border: 0; cursor: pointer;
  color: var(--ink-mute); font: 500 0.78rem/1 var(--sans);
  padding: 0.45rem; border-radius: 999px;
  transition: color 0.25s var(--ease), background 0.25s var(--ease);
}
.scene-btn svg { width: 18px; height: 18px; display: block; }
.scene-btn:hover { color: #fff; }
.scene-btn.on { color: #fff; background: rgba(255, 255, 255, 0.12); }
@media (max-width: 560px) {
  .scene-switcher { left: auto; right: 1rem; }
}

/* ---- lightbox ---- */
.lightbox {
  position: fixed; inset: 0; z-index: 100; display: none;
  place-items: center; padding: 4vmin;
  background: rgba(6, 9, 8, 0.86); backdrop-filter: blur(6px);
}
.lightbox.open { display: grid; }
.lightbox img { max-width: 92vw; max-height: 88vh; border-radius: var(--radius-sm); box-shadow: var(--shadow); }
.lightbox-close { position: fixed; top: 1.2rem; right: 1.4rem; font-size: 2rem; color: #fff; cursor: pointer; line-height: 1; opacity: 0.8; background: none; border: 0; }
.lightbox-close:hover { opacity: 1; }

/* ---- scroll reveal ---- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* parallax tilt layers get transforms from JS */
.tilt { will-change: transform; }

/* ---- responsive ---- */
@media (max-width: 860px) {
  .nav { position: relative; }
  .nav-toggle { display: inline-flex; }
  .nav-links {
    display: none; position: absolute; top: calc(100% + 0.55rem); right: 0;
    flex-direction: column; align-items: stretch; gap: 0.15rem; padding: 0.5rem; min-width: 190px;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur)) saturate(1.1);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(1.1);
    border: 1px solid var(--glass-brd); border-radius: 16px; box-shadow: var(--shadow);
  }
  .nav.open .nav-links { display: flex; }
  .nav-links a:not(.btn) { padding: 0.6rem 0.85rem; border-radius: 10px; }
  .nav-links .btn { justify-content: center; margin-top: 0.2rem; }
}
@media (max-width: 780px) {
  .about-grid { grid-template-columns: 1fr; }
  .gallery { columns: 2 160px; }
}

/* ---- reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  .reveal { opacity: 1; transform: none; }
}