/* ============================================================
   styles.css — sitewide styles for reiad.co.uk
   Identity: "research desk" — banknote green, Spectral serif
   headlines, IBM Plex Mono data labels — in a modern bento layout.
   Dark mode works by swapping the variables under [data-theme="dark"].
   ============================================================ */

/* ---------- Design tokens (light theme) ---------- */
:root {
  --paper: #FBFBF7;         /* page background */
  --panel: #FFFFFF;         /* card background */
  --ink: #1C2522;           /* main text */
  --ink-soft: #4A544E;      /* secondary text */
  --green: #145A3F;         /* primary accent */
  --green-strong: #0B3B29;  /* dark green (footer, gradient) */
  --green-soft: #E7F0EA;    /* pale green tint */
  --gold: #9A741E;          /* small labels */
  --hairline: #D9DED6;      /* borders / rules */
  --glass-bg: rgba(255, 255, 255, 0.16);
  --glass-edge: rgba(255, 255, 255, 0.38);
  --shadow: 0 10px 30px rgba(12, 40, 28, 0.08);
}

/* ---------- Dark theme: same names, darker values ---------- */
[data-theme="dark"] {
  --paper: #0E1512;
  --panel: #151F19;
  --ink: #E8EEE8;
  --ink-soft: #9FB0A6;
  --green: #4CB98A;
  --green-strong: #0B3B29;
  --green-soft: #16241D;
  --gold: #C9A24B;
  --hairline: #24302A;
  --glass-bg: rgba(20, 32, 26, 0.35);
  --glass-edge: rgba(255, 255, 255, 0.16);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

/* ---------- Base ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: "IBM Plex Sans", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  transition: background 0.25s ease, color 0.25s ease;
}

h1, h2, h3 { font-family: "Spectral", Georgia, serif; font-weight: 500; line-height: 1.18; }

.mono {
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

a { color: var(--green); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { opacity: 0.85; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 22px; }

/* ============================================================
   STICKY NAV
   ============================================================ */
header {
  position: sticky; top: 0; z-index: 50;
  background: var(--paper);
  border-bottom: 1px solid var(--hairline);
  transition: background 0.25s ease;
}
.header-inner {
  display: flex; align-items: center; gap: 18px;
  padding: 14px 0;
}
.site-name {
  font-family: "Spectral", Georgia, serif;
  font-size: 1.2rem; color: var(--ink);
  text-decoration: none; margin-right: auto;
}
nav { display: flex; gap: 18px; align-items: center; }
nav a {
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 0.78rem; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--ink); text-decoration: none;
}
nav a:hover, nav a[aria-current="page"] { color: var(--green); opacity: 1; }

/* Icon buttons: search + theme toggle */
.icon-btn {
  border: 1px solid var(--hairline);
  background: var(--panel); color: var(--ink);
  border-radius: 8px; padding: 6px 10px;
  font-family: "IBM Plex Mono", Consolas, monospace; font-size: 0.78rem;
  cursor: pointer; display: inline-flex; align-items: center; gap: 6px;
}
.icon-btn:hover { border-color: var(--green); color: var(--green); }
.kbd-hint { opacity: 0.6; font-size: 0.7rem; }

/* ============================================================
   HERO with kinetic headline
   ============================================================ */
.hero { padding: 84px 0 48px; }
.eyebrow { color: var(--gold); display: block; margin-bottom: 18px; }
.hero h1 { font-size: clamp(2.2rem, 5.8vw, 3.8rem); max-width: 18ch; }

/* JS wraps each headline word in <span class="w" style="--i:n">.
   Words rise and fade in, one after another. */
.hero h1 .w {
  display: inline-block;
  opacity: 0;
  transform: translateY(0.55em);
  animation: rise 0.6s cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
  animation-delay: calc(var(--i) * 90ms);
}
@keyframes rise { to { opacity: 1; transform: translateY(0); } }

.hero p.lede { margin-top: 20px; max-width: 56ch; font-size: 1.12rem; color: var(--ink-soft); }

.hero-actions { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-block; text-decoration: none;
  padding: 11px 20px; border-radius: 10px;
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 0.82rem; letter-spacing: 0.05em; text-transform: uppercase;
}
.btn-solid { background: var(--green); color: #fff; }
.btn-solid:hover { background: var(--green-strong); opacity: 1; }
.btn-ghost { border: 1px solid var(--hairline); color: var(--ink); }
.btn-ghost:hover { border-color: var(--green); color: var(--green); opacity: 1; }

/* ============================================================
   BENTO GRID
   Named areas make the layout readable:
   feature = big card, note = market note, stats = glass card,
   about = bio snippet, services = services teaser.
   ============================================================ */
.bento {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, 1fr);
  grid-template-areas:
    "feature feature stats"
    "feature feature about"
    "note    services about";
  padding-bottom: 24px;
}
.cell {
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: 16px;
  padding: 26px;
  box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: 12px;
}
.cell .tag { color: var(--gold); }
.cell h2 { font-size: 1.5rem; }
.cell h3 { font-size: 1.15rem; }
.cell p { color: var(--ink-soft); font-size: 0.97rem; }
.cell .more { margin-top: auto; font-size: 0.92rem; }

.cell-feature { grid-area: feature; }
.cell-feature h2 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); max-width: 22ch; }
.cell-note { grid-area: note; }
.cell-about { grid-area: about; }
.cell-services { grid-area: services; }

/* Services list inside its cell */
.svc { display: flex; flex-direction: column; gap: 6px; font-size: 0.95rem; }
.svc span { border-bottom: 1px solid var(--hairline); padding: 6px 0; color: var(--ink-soft); }
.svc span:last-child { border-bottom: 0; }

/* ---------- The glassmorphism moment: stats card ----------
   A green gradient tile with a frosted-glass card floating on it.
   This is deliberately the ONLY glass element on the site. */
.cell-stats {
  grid-area: stats;
  position: relative;
  border: 0;
  padding: 14px;
  background: linear-gradient(150deg, #14603F 0%, #0B3B29 55%, #123528 100%);
  overflow: hidden;
}
/* faint taka watermark in the gradient's corner */
.cell-stats::before {
  content: "\09F3";  /* ৳ Bengali taka sign */
  position: absolute; right: -14px; bottom: -34px;
  font-size: 9rem; color: rgba(255, 255, 255, 0.07);
  font-family: "Spectral", Georgia, serif;
}
.glass {
  position: relative;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: var(--glass-bg);
  border: 1px solid var(--glass-edge);
  border-radius: 12px;
  padding: 18px;
  color: #F2F6F2;
  display: flex; flex-direction: column; gap: 10px;
  height: 100%;
}
.glass .mono { color: #CFE3D6; }
.glass strong { font-family: "Spectral", Georgia, serif; font-weight: 500; font-size: 1.02rem; display: block; }
.glass small { color: #BCD2C4; }

/* ============================================================
   COMMAND PALETTE (Cmd/Ctrl+K)
   ============================================================ */
#palette {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(10, 18, 14, 0.45);
  display: flex; justify-content: center; align-items: flex-start;
  padding: 12vh 20px 0;
}
#palette[hidden] { display: none; }
.palette-panel {
  width: 100%; max-width: 560px;
  background: var(--panel); color: var(--ink);
  border: 1px solid var(--hairline); border-radius: 14px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
  overflow: hidden;
}
#palette-input {
  width: 100%; border: 0; outline: 0;
  background: transparent; color: var(--ink);
  font-family: "IBM Plex Sans", Arial, sans-serif; font-size: 1.05rem;
  padding: 16px 18px;
  border-bottom: 1px solid var(--hairline);
}
#palette-list { list-style: none; max-height: 46vh; overflow-y: auto; }
#palette-list li { padding: 0; }
#palette-list a {
  display: flex; justify-content: space-between; gap: 12px;
  padding: 12px 18px; text-decoration: none; color: var(--ink);
}
#palette-list .hint { color: var(--ink-soft); font-size: 0.8rem; }
#palette-list li.active a, #palette-list a:hover { background: var(--green-soft); color: var(--green); }
.palette-empty { padding: 14px 18px; color: var(--ink-soft); font-size: 0.92rem; }

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  margin-top: 56px;
  background: var(--green-strong); color: #E8EEE8;
  padding: 44px 0;
}
footer a { color: #fff; }
footer .mono { color: #9FB8A8; display: block; margin-bottom: 12px; }
footer p { max-width: 60ch; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 860px) {
  .bento {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "feature feature"
      "stats   about"
      "note    services";
  }
}
@media (max-width: 600px) {
  .bento { grid-template-columns: 1fr; grid-template-areas: "feature" "stats" "note" "services" "about"; }
  .hero { padding-top: 56px; }
  nav a { display: none; }              /* keep nav minimal on phones… */
  nav a[data-keep] { display: inline; } /* …except the links marked to stay */
}

/* ============================================================
   REDUCED MOTION — turn every animation off gracefully
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero h1 .w { animation: none; opacity: 1; transform: none; }
  body, header { transition: none; }
}

/* ============================================================
   ABOUT PAGE additions
   ============================================================ */

/* Section label + hairline, reused from the research-desk identity */
section { padding: 44px 0 6px; }
.section-label {
  color: var(--gold);
  border-bottom: 1px solid var(--hairline);
  padding-bottom: 10px; margin-bottom: 26px;
  display: block;
}
section > .wrap > h2, .prose h2 { font-size: 1.6rem; margin-bottom: 14px; }
.prose p { max-width: 64ch; margin-bottom: 15px; }
.prose p:last-child { margin-bottom: 0; }

/* Key–value rows for education, experience, certificates */
.rows { border-top: 1px solid var(--hairline); }
.row {
  display: grid; grid-template-columns: 210px 1fr; gap: 16px;
  padding: 15px 0; border-bottom: 1px solid var(--hairline);
}
.row .k { color: var(--gold); padding-top: 3px; }
.row .v { color: var(--ink); }
.row .v small { color: var(--ink-soft); display: block; }

/* "Where this is going" — the roadmap cells.
   Three cards: Now / Next / The aim. The last one is the
   dark-green cell so the destination visually stands out. */
.path { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.path .cell h3 { font-size: 1.12rem; }
.path .cell ul { list-style: none; }
.path .cell li {
  padding: 7px 0; border-bottom: 1px solid var(--hairline);
  color: var(--ink-soft); font-size: 0.95rem;
}
.path .cell li:last-child { border-bottom: 0; }
.cell-aim { background: var(--green-strong); border-color: transparent; }
.cell-aim .tag { color: #C9A24B; }
.cell-aim h3, .cell-aim li { color: #E8EEE8; }
.cell-aim li { border-color: rgba(255,255,255,0.14); }

@media (max-width: 780px) {
  .path { grid-template-columns: 1fr; }
  .row { grid-template-columns: 1fr; gap: 4px; }
}