/* ─────────────────────────────────────────────────────────────
   Mojtaba Alehosseini — v3, spatial.
   Overlay UI styles only — the actual 3D scene lives in main.js.
   ───────────────────────────────────────────────────────────── */

:root {
  --space: #08081A;
  --space-2: #1A1A28;
  --ink: #F5F5FA;
  --ink-soft: #C2C2D0;
  --ink-dim: #76768A;
  --glass: rgba(245, 245, 250, 0.06);
  --glass-strong: rgba(245, 245, 250, 0.10);
  --rule: rgba(245, 245, 250, 0.10);
  --accent: #8FB5E8;        /* iceberg blue — premium, not gold */
  --accent-2: #C9B6F0;      /* iridescent violet shift */

  --sans: "Inter Tight", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --serif: "Instrument Serif", Georgia, serif;

  --t-fast: 200ms cubic-bezier(0.2, 0.6, 0.2, 1);
  --t-med:  450ms cubic-bezier(0.2, 0.6, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--space);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
ul, ol { list-style: none; margin: 0; padding: 0; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
img { display: block; max-width: 100%; }

::selection { background: var(--accent); color: var(--space); }

#scene {
  position: fixed;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  z-index: 0;
  touch-action: none;
}

/* ─── LOADER ────────────────────────────────────────────────── */
.loader {
  position: fixed;
  inset: 0;
  background: var(--space);
  display: grid;
  place-items: center;
  z-index: 50;
  transition: opacity var(--t-med);
}
.loader.hidden {
  opacity: 0;
  pointer-events: none;
}
.loader__inner {
  text-align: center;
  max-width: 22rem;
  padding: 1rem;
}
.loader__brand {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: 0.75rem;
}
.loader__hint {
  font-size: 0.85rem;
  color: var(--ink-dim);
  letter-spacing: 0.04em;
  margin-bottom: 1.5rem;
  text-transform: lowercase;
}
.loader__bar {
  width: 100%;
  height: 1px;
  background: rgba(245, 245, 250, 0.15);
  overflow: hidden;
}
.loader__bar-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 220ms ease-out;
}

/* ─── TOP CORNER UI ─────────────────────────────────────────── */
.top {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  padding: clamp(0.9rem, 2vw, 1.4rem) clamp(1rem, 3vw, 2.5rem);
  display: flex;
  justify-content: space-between;
  align-items: center;
  pointer-events: none;
  font-size: 0.86rem;
}
.top a { pointer-events: auto; }
.top__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  letter-spacing: -0.01em;
  font-weight: 500;
  color: var(--ink);
  transition: color var(--t-fast);
}
.top__brand:hover { color: var(--accent); }
.top__brand .dot {
  width: 0.55em;
  height: 0.55em;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}
.top__right { display: inline-flex; gap: 1rem; align-items: center; }
.top__link {
  font-size: 0.8rem;
  color: var(--ink-soft);
  letter-spacing: 0.02em;
  transition: color var(--t-fast);
  border-bottom: 1px solid rgba(245, 245, 250, 0.18);
  padding-bottom: 1px;
}
.top__link:hover { color: var(--accent); border-color: var(--accent); }

/* ─── HINT (drag/click instruction) ─────────────────────────── */
.hint {
  position: fixed;
  bottom: clamp(1.5rem, 4vh, 3rem);
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  font-size: 0.78rem;
  color: var(--ink-dim);
  letter-spacing: 0.06em;
  text-transform: lowercase;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  background: var(--glass);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--rule);
  transition: opacity var(--t-med);
  pointer-events: none;
}
.hint.hidden {
  opacity: 0;
}

/* ─── PANEL (section overlay) ───────────────────────────────── */
.panel {
  position: fixed;
  inset: 0;
  z-index: 20;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--t-med);
  display: grid;
  place-items: center;
  padding: clamp(0.75rem, 3vw, 2rem);
}
.panel.open {
  opacity: 1;
  pointer-events: auto;
}
.panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(8, 8, 26, 0.6);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
}
.panel__inner {
  position: relative;
  max-width: 44rem;
  width: 100%;
  max-height: min(80vh, 700px);
  padding: clamp(1.5rem, 4vw, 3rem);
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(245, 245, 250, 0.06), rgba(245, 245, 250, 0.02));
  border: 1px solid rgba(245, 245, 250, 0.14);
  box-shadow:
    0 30px 80px -20px rgba(0, 0, 0, 0.6),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);
  overflow-y: auto;
  transform: translateY(8px) scale(0.985);
  transition: transform var(--t-med);
}
.panel.open .panel__inner {
  transform: translateY(0) scale(1);
}
.panel__close {
  position: absolute;
  top: clamp(0.75rem, 2vw, 1.25rem);
  right: clamp(0.75rem, 2vw, 1.25rem);
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(245, 245, 250, 0.06);
  border: 1px solid rgba(245, 245, 250, 0.12);
  color: var(--ink-soft);
  z-index: 2;
  transition: color var(--t-fast), background var(--t-fast), border-color var(--t-fast);
}
.panel__close:hover {
  color: var(--ink);
  background: rgba(245, 245, 250, 0.12);
  border-color: rgba(245, 245, 250, 0.24);
}

.panel__section {
  display: none;
}
.panel__section.active {
  display: block;
}
.panel__eyebrow {
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  color: var(--accent);
  text-transform: lowercase;
  margin: 0 0 1rem;
}
.panel__eyebrow .dim { color: var(--ink-dim); margin-left: 0.25em; }
.panel__h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-style: italic;
  font-size: clamp(2rem, 4.5vw, 2.8rem);
  letter-spacing: -0.01em;
  margin: 0 0 1.25rem;
  line-height: 1.1;
}
.panel__section p {
  color: var(--ink-soft);
  margin: 0 0 1rem;
  max-width: 60ch;
}
.panel__section p em { font-style: italic; color: var(--ink); }
.panel__quote {
  border-left: 2px solid var(--accent);
  padding-left: 1rem;
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--ink) !important;
  margin-top: 1.25rem !important;
}

.dim { color: var(--ink-dim); }

/* Now section key/value */
.kv {
  display: grid;
  gap: 0.6rem;
  margin-top: 0.5rem;
}
.kv li {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 0.75rem;
  align-items: baseline;
  padding: 0.4rem 0;
  border-bottom: 1px dashed var(--rule);
  font-size: 0.95rem;
}
.kv li > span:first-child {
  color: var(--ink-dim);
  font-size: 0.84rem;
  letter-spacing: 0.02em;
}
.kv li > span:last-child {
  color: var(--ink-soft);
}
@media (max-width: 500px) {
  .kv li {
    grid-template-columns: 1fr;
    gap: 0.1rem;
    padding-bottom: 0.75rem;
  }
  .kv li > span:first-child {
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 0.08em;
  }
}

/* Timeline */
.timeline {
  display: grid;
  gap: 1.5rem;
  margin-top: 0.5rem;
}
.timeline > li {
  display: grid;
  gap: 0.2rem;
}
.timeline__when {
  font-size: 0.78rem;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}
.timeline h3 {
  font-family: var(--sans);
  font-weight: 500;
  font-size: 1.02rem;
  margin: 0.15rem 0 0.15rem;
  letter-spacing: -0.005em;
  color: var(--ink);
}
.timeline__where {
  font-size: 0.88rem;
  color: var(--ink-dim);
  display: block;
  margin-bottom: 0.4rem;
}
.timeline p {
  font-size: 0.94rem;
  color: var(--ink-soft);
  margin: 0;
}

/* Repos */
.repos {
  display: grid;
  gap: 0;
  margin-top: 1rem;
  border-top: 1px solid var(--rule);
}
.repo {
  border-bottom: 1px solid var(--rule);
}
.repo a {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.5rem 1rem;
  padding: 0.8rem 0;
  align-items: baseline;
  transition: padding var(--t-fast);
}
.repo a:hover {
  padding-left: 0.5rem;
  padding-right: 0.5rem;
  background: var(--glass);
}
.repo__name {
  font-weight: 500;
  font-size: 1rem;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
}
.repo__name::after {
  content: "→";
  color: var(--ink-dim);
  transition: color var(--t-fast), transform var(--t-fast);
}
.repo a:hover .repo__name { color: var(--accent); }
.repo a:hover .repo__name::after { color: var(--accent); transform: translateX(3px); }
.repo__desc {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 0.2rem 0 0;
  max-width: 50ch;
}
.repo__meta {
  display: flex;
  gap: 0.6rem;
  font-size: 0.78rem;
  color: var(--ink-dim);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  align-items: center;
}
.repo__lang-dot {
  width: 0.55em;
  height: 0.55em;
  border-radius: 50%;
  margin-right: 0.35em;
  display: inline-block;
}
@media (max-width: 500px) {
  .repo a { grid-template-columns: 1fr; }
}

/* Contact */
.contact {
  display: grid;
  gap: 0.4rem;
  margin-top: 1rem;
  border-top: 1px solid var(--rule);
  padding-top: 1rem;
}
.contact li {
  display: grid;
  grid-template-columns: 6rem 1fr;
  gap: 1rem;
  align-items: baseline;
  padding: 0.4rem 0;
  border-bottom: 1px dashed var(--rule);
  font-size: 0.95rem;
}
.contact li > span:first-child {
  color: var(--ink-dim);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.link {
  color: var(--accent);
  border-bottom: 1px solid rgba(143, 181, 232, 0.4);
  transition: color var(--t-fast), border-color var(--t-fast);
}
.link:hover { color: var(--ink); border-bottom-color: var(--ink); }

.panel__foot { margin-top: 1rem; }
.panel__sig {
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--ink-dim);
  font-family: var(--serif);
}
.panel__sig em { font-style: italic; }

/* OOPS */
.oops {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  z-index: 99;
  padding: 2rem;
  text-align: center;
  font-size: 1rem;
}
.oops a { color: var(--accent); border-bottom: 1px solid var(--accent); }

/* REDUCED MOTION */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus rings for keyboard users */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}