/* ==========================================================================
   FAISAL ALASLANI — INDUSTRIAL DESIGN STUDIO
   Design tokens & global styles
   ========================================================================== */

:root {
  --paper: #F7F6F2;
  --ink: #111111;
  --ink-soft: #6F6F6A;
  --line: #E4E1D8;
  --line-strong: #111111;
  --white: #FFFFFF;
  --accent: #8A2E20;      /* restrained industrial red — used sparingly */
  --accent-quiet: #4B5A45; /* muted dark green — alt accent, rarely used */

  --f-display: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
  --f-body: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;

  --gap: clamp(1.1rem, 2.4vw, 2.4rem);
  --container: 1480px;
  --nav-h: 84px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--f-body);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gap);
}

/* ---------- Typography ---------- */

h1, h2, h3, h4 {
  font-family: var(--f-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
  line-height: 1.05;
}

.label, .eyebrow, .meta {
  font-family: var(--f-body);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-weight: 500;
}

p { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--ink); color: var(--paper);
  padding: 0.75em 1.2em; z-index: 999; font-size: 0.85rem;
}
.skip-link:focus { left: var(--gap); top: var(--gap); }

/* ---------- Header ---------- */

.site-header {
  position: sticky; top: 0; z-index: 100;
  /* Solid (not translucent+blur) background on purpose: backdrop-filter
     creates a new containing block for fixed-position descendants, which
     breaks the full-screen mobile nav panel below. */
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--nav-h);
}
.brand {
  font-family: var(--f-body);
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
}
.brand-logo { height: 30px; width: auto; display: block; }
.nav-links { display: flex; gap: clamp(1.4rem, 3vw, 2.8rem); list-style: none; margin: 0; padding: 0; }
.nav-links a {
  font-size: 0.76rem; letter-spacing: 0.12em; text-transform: uppercase;
  font-weight: 500; padding: 0.4em 0; border-bottom: 1px solid transparent;
  transition: border-color .15s ease, opacity .15s ease;
}
.nav-links a:hover, .nav-links a[aria-current="page"] { border-color: var(--ink); }
.nav-toggle {
  display: none; background: none; border: 1px solid var(--ink); padding: 0.5em 0.8em;
  font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; cursor: pointer;
}
@media (max-width: 780px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: fixed; inset: var(--nav-h) 0 0 0; background: var(--paper);
    flex-direction: column; gap: 0; padding: 0.5rem var(--gap);
    transform: translateY(-110%); transition: transform .25s ease;
    border-top: 1px solid var(--line);
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { display: block; padding: 1.1em 0; border-bottom: 1px solid var(--line); font-size: 0.95rem; }
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex; align-items: center; gap: 0.6em;
  font-size: 0.76rem; letter-spacing: 0.1em; text-transform: uppercase; font-weight: 500;
  padding: 1em 1.7em; border: 1px solid var(--ink);
  background: transparent; cursor: pointer;
  transition: background .18s ease, color .18s ease;
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn-solid { background: var(--ink); color: var(--paper); }
.btn-solid:hover { background: var(--accent); border-color: var(--accent); }
.btn-block { width: 100%; justify-content: center; }
.btn-ghost { border-color: rgba(247,246,242,0.55); color: var(--paper); }
.btn-ghost:hover { background: rgba(247,246,242,0.12); color: var(--paper); }

/* ---------- Hero ---------- */

.hero { padding: clamp(3.5rem, 9vw, 7rem) 0 clamp(2.5rem, 6vw, 4rem); }
.hero .eyebrow { display: block; margin-bottom: 1.4rem; }
.hero h1 {
  font-size: clamp(2.6rem, 7vw, 5.6rem);
  max-width: 16ch;
  font-weight: 400;
}
.hero .role { font-family: var(--f-body); font-size: 1.05rem; color: var(--ink-soft); margin-top: 1rem; }
.hero .intro { font-size: 1.15rem; color: var(--ink-soft); max-width: 56ch; margin-top: 1.6rem; line-height: 1.65; }
.hero-actions { display: flex; gap: 1rem; margin-top: 2.2rem; flex-wrap: wrap; }

/* ---------- Section scaffolding ---------- */

section { padding: clamp(3rem, 7vw, 6rem) 0; }
.section-head {
  display: flex; justify-content: space-between; align-items: flex-end; gap: 1.5rem;
  margin-bottom: clamp(2rem, 5vw, 3.4rem); padding-bottom: 1.4rem; border-bottom: 1px solid var(--line);
}
.section-head h2 { font-size: clamp(1.9rem, 3.6vw, 2.8rem); }
.section-head .eyebrow { display: block; margin-bottom: 0.7rem; }
.section-link { font-size: 0.76rem; letter-spacing: 0.1em; text-transform: uppercase; font-weight: 500; border-bottom: 1px solid var(--ink); padding-bottom: 0.2em; white-space: nowrap; }

/* ---------- Filters ---------- */

.filters { display: flex; flex-wrap: wrap; gap: 0.5rem 1.8rem; margin-bottom: clamp(2rem, 5vw, 3rem); }
.filters button {
  background: none; border: none; border-bottom: 1px solid transparent;
  font-size: 0.76rem; letter-spacing: 0.1em; text-transform: uppercase; font-weight: 500;
  color: var(--ink-soft); padding: 0.4em 0; cursor: pointer;
  transition: color .15s ease, border-color .15s ease;
}
.filters button:hover { color: var(--ink); }
.filters button.active { color: var(--ink); border-color: var(--accent); }

/* ---------- Editorial project gallery ---------- */

.editorial-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(1.2rem, 3vw, 2.6rem);
}
.proj-card { grid-column: span 6; }
.proj-card.size-large { grid-column: span 12; }
.proj-card.size-wide { grid-column: span 8; }
.proj-card.size-tall { grid-column: span 4; }
.proj-card.size-normal { grid-column: span 6; }
@media (max-width: 900px) {
  .proj-card, .proj-card.size-large, .proj-card.size-wide, .proj-card.size-tall, .proj-card.size-normal { grid-column: span 12; }
}

.proj-card a { display: block; }
.proj-media {
  position: relative; overflow: hidden; background: var(--line);
  aspect-ratio: 4 / 3;
}
.proj-card.size-tall .proj-media { aspect-ratio: 3 / 4; }
.proj-card.size-large .proj-media { aspect-ratio: 16 / 8; }
.proj-media img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .7s cubic-bezier(.2,.7,.2,1), filter .5s ease;
  filter: grayscale(0.2);
}
.proj-card a:hover .proj-media img { transform: scale(1.035); filter: grayscale(0); }

.proj-view {
  position: absolute; right: 1.1rem; bottom: 1.1rem;
  font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase; font-weight: 500;
  background: var(--paper); padding: 0.5em 0.9em;
  opacity: 0; transform: translateY(6px);
  transition: opacity .2s ease, transform .2s ease;
}
.proj-card a:hover .proj-view { opacity: 1; transform: translateY(0); }

.proj-info { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; margin-top: 1.1rem; }
.proj-info h3 {
  font-size: clamp(1.3rem, 2.4vw, 1.7rem); font-weight: 400;
  transition: opacity .2s ease;
}
.proj-card a:hover .proj-info h3 { opacity: 0.6; }
.proj-meta { font-size: 0.76rem; letter-spacing: 0.06em; color: var(--ink-soft); white-space: nowrap; text-align: right; }
.proj-cats { font-size: 0.72rem; letter-spacing: 0.06em; color: var(--ink-soft); margin-top: 0.3rem; text-transform: uppercase; }

/* ---------- Project detail page ---------- */

.project-hero-media { aspect-ratio: 16/9; overflow: hidden; background: var(--line); }
.project-hero-media img { width: 100%; height: 100%; object-fit: cover; }

.project-head { padding: clamp(2.4rem, 6vw, 4rem) 0 clamp(2rem, 4vw, 3rem); }
.project-head .label { display: block; margin-bottom: 1rem; }
.project-head h1 { font-size: clamp(2.4rem, 6vw, 4.4rem); max-width: 20ch; }

.meta-strip {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1.6rem; margin-top: clamp(2rem, 4vw, 3rem);
  padding-top: clamp(1.6rem, 3vw, 2.2rem); border-top: 1px solid var(--line);
}
.meta-strip .k { font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 0.5em; }
.meta-strip .v { font-size: 0.98rem; }

.case-section { padding: clamp(2.6rem, 6vw, 4.6rem) 0; border-top: 1px solid var(--line); }
.case-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: center;
}
.case-grid.reverse .case-text { order: 2; }
.case-grid.reverse .case-media { order: 1; }
@media (max-width: 860px) {
  .case-grid { grid-template-columns: 1fr; }
  .case-grid.reverse .case-text, .case-grid.reverse .case-media { order: initial; }
}
.case-text .label { display: block; margin-bottom: 1rem; }
.case-text h2 { font-size: clamp(1.9rem, 3.4vw, 2.6rem); margin-bottom: 1.1rem; }
.case-text p { color: var(--ink-soft); font-size: 1.02rem; }
.case-media { overflow: hidden; background: var(--line); }
.case-media img { width: 100%; height: 100%; object-fit: cover; }

.full-media { margin: clamp(2.6rem, 6vw, 4.6rem) 0; }
.full-media img { width: 100%; }
.full-media figcaption { margin-top: 0.8rem; font-size: 0.78rem; color: var(--ink-soft); }

.gallery-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: clamp(1rem, 2.4vw, 1.6rem);
}
.gallery-grid figure { margin: 0; overflow: hidden; background: var(--line); }
.gallery-grid img { width: 100%; height: 100%; object-fit: cover; }
@media (max-width: 700px) { .gallery-grid { grid-template-columns: 1fr; } }

.project-nav {
  display: flex; justify-content: space-between; align-items: center;
  border-top: 1px solid var(--line); margin-top: clamp(2rem, 5vw, 3.5rem); padding: clamp(2rem, 4vw, 3rem) 0;
}
.project-nav a { font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase; font-weight: 500; }
.project-nav .next-label { display:block; font-size: 0.66rem; color: var(--ink-soft); margin-bottom: 0.4em; letter-spacing: 0.12em; }

/* ---------- Store ---------- */

.store-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1.4rem, 3vw, 2.2rem);
}
@media (max-width: 900px) { .store-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .store-grid { grid-template-columns: 1fr; } }

.product-card { position: relative; }
.product-media { aspect-ratio: 4/5; overflow: hidden; background: var(--line); position: relative; }
.product-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; filter: grayscale(0.15); }
.product-card a:hover .product-media img { transform: scale(1.035); filter: grayscale(0); }
.price-tag {
  position: absolute; top: 0.9rem; right: 0.9rem; background: var(--paper);
  border: 1px solid var(--ink); font-size: 0.76rem; padding: 0.4em 0.7em;
}
.badge {
  font-size: 0.66rem; letter-spacing: 0.1em; text-transform: uppercase; font-weight: 500;
  padding: 0.3em 0.6em; border: 1px solid var(--ink-soft); color: var(--ink-soft); display: inline-block;
}
.badge-download { border-color: var(--accent); color: var(--accent); }
.product-info { margin-top: 1rem; }
.product-info h3 { font-size: 1.2rem; font-weight: 400; }
.product-cat { font-size: 0.72rem; color: var(--ink-soft); letter-spacing: 0.06em; text-transform: uppercase; margin-top: 0.3rem; }

/* ---------- Forms ---------- */

.panel { border: 1px solid var(--ink); padding: clamp(1.6rem, 3vw, 2.4rem); }
.field { margin-bottom: 1.3rem; }
.field label { display: block; font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 0.6em; }
.field input, .field select, .field textarea {
  width: 100%; padding: 0.85em 0.9em; border: 1px solid var(--line); background: var(--white);
  font-family: var(--f-body); font-size: 0.95rem; color: var(--ink);
}
.field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.field textarea { resize: vertical; min-height: 110px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 560px) { .field-row { grid-template-columns: 1fr; } }
.form-note { font-size: 0.82rem; color: var(--ink-soft); margin-top: 1rem; }
.file-name { font-size: 0.78rem; color: var(--ink-soft); margin-top: 0.5em; }

/* ---------- About ---------- */

.split { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(2.4rem, 5vw, 4.5rem); }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }
.skills-list { list-style: none; margin: 1.6rem 0 0; padding: 0; columns: 2; column-gap: 2rem; }
.skills-list li { padding: 0.55em 0; border-bottom: 1px solid var(--line); font-size: 0.95rem; break-inside: avoid; }
@media (max-width: 560px) { .skills-list { columns: 1; } }

.contact-list { list-style: none; padding: 0; margin: 1.8rem 0 0; }
.contact-list li { display: flex; justify-content: space-between; padding: 1em 0; border-bottom: 1px solid var(--line); font-size: 0.92rem; }
.contact-list li span:first-child { color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.72rem; }

/* ---------- Black contrast band (full-bleed) ---------- */
.band-black {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(2.6rem, 6vw, 4.4rem) 0;
}
.band-black .eyebrow { color: rgba(247,246,242,0.55); }
.band-black h2, .band-black h3 { color: var(--paper); }
.band-black p { color: rgba(247,246,242,0.75); }

/* ---------- Footer ---------- */

.site-footer { background: var(--ink); color: var(--paper); padding: clamp(2.6rem, 5vw, 4rem) 0 2rem; margin-top: clamp(3rem, 6vw, 5rem); }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2rem; padding-bottom: 2.4rem; border-bottom: 1px solid rgba(247,246,242,0.15); }
@media (max-width: 700px) { .footer-top { grid-template-columns: 1fr; gap: 2rem; } }
.footer-brand h3 { font-size: 1.6rem; font-weight: 600; color: var(--paper); }
.footer-brand p { color: rgba(247,246,242,0.6); margin-top: 0.6rem; font-size: 0.92rem; }
.footer-col .label { display: block; margin-bottom: 1rem; color: rgba(247,246,242,0.55); }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 0.7em; }
.footer-col a { font-size: 0.9rem; border-bottom: 1px solid transparent; color: var(--paper); }
.footer-col a:hover { border-color: var(--paper); }
.footer-row {
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem;
  padding-top: 1.6rem;
  font-size: 0.74rem; color: rgba(247,246,242,0.55); letter-spacing: 0.05em; text-transform: uppercase;
}

/* ---------- Misc ---------- */

.empty-state { padding: 4rem 0; text-align: center; color: var(--ink-soft); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; }

.toast {
  position: fixed; bottom: 1.6rem; left: 50%; transform: translateX(-50%) translateY(120%);
  background: var(--ink); color: var(--paper); font-size: 0.82rem; padding: 0.9em 1.5em; z-index: 999;
  transition: transform .3s ease; letter-spacing: 0.02em;
}
.toast.show { transform: translateX(-50%) translateY(0); }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}

/* ---------- Reveal-on-scroll (subtle, respects reduced motion) ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }