/* ============================================================
   Ayoub El Majjodi — portfolio
   Premium · light + dark · wide editorial layout
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

:root {
  color-scheme: light;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --bg:            #fbfbfa;
  --bg-subtle:     #f2f2ef;
  --surface:       #ffffff;
  --text:          #2a2a27;
  --text-strong:   #0b0b0a;
  --text-muted:    #62625d;
  --text-faint:    #94948c;
  --border:        rgba(12, 12, 10, 0.11);
  --border-strong: rgba(12, 12, 10, 0.22);
  --accent:        #2563eb;
  --accent-ink:    #ffffff;
  --accent-soft:   rgba(37, 99, 235, 0.10);
  --shadow-sm:     0 1px 2px rgba(12, 12, 10, 0.05), 0 1px 1px rgba(12, 12, 10, 0.04);
  --shadow:        0 10px 34px -10px rgba(12, 12, 10, 0.16), 0 3px 10px -3px rgba(12, 12, 10, 0.08);

  --radius:    14px;
  --radius-sm: 9px;
  --maxw:      68rem;
  --pad-x:     clamp(1.25rem, 4vw, 3rem);
  --label-col: clamp(6rem, 12vw, 9rem);
  --ease:      cubic-bezier(0.16, 1, 0.3, 1);
}

:root[data-theme="dark"] {
  color-scheme: dark;

  --bg:            #0a0a0b;
  --bg-subtle:     #141416;
  --surface:       #151517;
  --text:          #e8e8e6;
  --text-strong:   #ffffff;
  --text-muted:    #9a9a97;
  --text-faint:    #646462;
  --border:        rgba(255, 255, 255, 0.12);
  --border-strong: rgba(255, 255, 255, 0.24);
  --accent:        #60a5fa;
  --accent-ink:    #0a0a0b;
  --accent-soft:   rgba(96, 165, 250, 0.14);
  --shadow-sm:     0 1px 2px rgba(0, 0, 0, 0.45);
  --shadow:        0 14px 40px -12px rgba(0, 0, 0, 0.65), 0 4px 12px -4px rgba(0, 0, 0, 0.5);
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
}

body {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.62;
  color: var(--text);
  background:
    radial-gradient(46rem 22rem at 92% -8rem, var(--accent-soft), transparent 62%),
    var(--bg);
  background-attachment: fixed;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-wrap: break-word;
}

::selection { background: var(--accent-soft); color: var(--text-strong); }

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

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* theme cross-fade, only while toggling */
:root.theme-anim,
:root.theme-anim *,
:root.theme-anim *::before,
:root.theme-anim *::after {
  transition: background-color 0.4s var(--ease), border-color 0.4s var(--ease),
              color 0.4s var(--ease), fill 0.4s var(--ease) !important;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---------- icons ---------- */
.icon {
  width: 1em;
  height: 1em;
  display: inline-block;
  flex-shrink: 0;
  vertical-align: middle;
}
.arrow { display: inline-block; transition: transform 0.2s var(--ease); }
a:hover .arrow { transform: translate(2px, -2px); }

/* ---------- layout ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background-color 0.3s var(--ease);
}
.site-header.scrolled { border-bottom-color: var(--border); }

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 3.9rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 560;
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
  color: var(--text-strong);
  white-space: nowrap;
  transition: color 0.2s var(--ease);
}
.brand:hover { color: var(--accent); }
.brand-mark {
  display: grid;
  place-items: center;
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 1.9rem);
}
.nav a {
  font-size: 0.9rem;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.28rem;
  transition: color 0.2s var(--ease);
}
.nav a:hover { color: var(--text-strong); }
.nav a[aria-current="page"] { color: var(--text-strong); }

.theme-toggle {
  display: inline-grid;
  place-items: center;
  width: 2.15rem;
  height: 2.15rem;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease),
              background-color 0.2s var(--ease), transform 0.12s var(--ease);
}
.theme-toggle:hover { color: var(--text-strong); border-color: var(--border-strong); }
.theme-toggle:active { transform: scale(0.92); }
.theme-toggle .icon { width: 1rem; height: 1rem; }
.theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* ---------- main ---------- */
main {
  padding-block: clamp(3rem, 7vw, 5.5rem) clamp(4rem, 10vw, 6.5rem);
  counter-reset: sec;
}

/* ---------- hero ---------- */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 37rem) 1fr;
  align-items: center;
  gap: clamp(2rem, 6vw, 4.5rem);
}
.hero-main { grid-column: 1; }
.hero-figure {
  grid-column: 2;
  position: relative;
  display: grid;
  place-items: center;
  isolation: isolate;
}
.hero-figure::before {
  content: "";
  position: absolute;
  inset: -18%;
  background: radial-gradient(circle at 50% 45%, var(--accent-soft), transparent 66%);
  z-index: -1;
  pointer-events: none;
}
.avatar {
  width: clamp(9rem, 17vw, 13rem);
  height: clamp(9rem, 17vw, 13rem);
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow);
  transition: transform 0.4s var(--ease);
}
.hero-figure:hover .avatar { transform: scale(1.03); }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.01em;
  color: var(--text-muted);
  margin-bottom: 1.6rem;
}
.hero-eyebrow .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 var(--accent-soft);
  animation: pulse-dot 2.8s var(--ease) infinite;
}
@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 0 var(--accent-soft); }
  55%      { box-shadow: 0 0 0 7px transparent; }
}

.hero-name {
  font-size: clamp(2.2rem, 6vw, 3.4rem);
  font-weight: 580;
  letter-spacing: -0.03em;
  line-height: 1.02;
  color: var(--text-strong);
}
.hero-meta {
  margin-top: 1.3rem;
  display: grid;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}
.hero-meta > div { display: flex; gap: 1rem; }
.hero-meta dt {
  flex-shrink: 0;
  width: 3.4rem;
  padding-top: 0.12rem;
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: var(--text-faint);
}
.hero-meta dd { color: var(--text-muted); }
.hero-lead {
  font-size: clamp(1.05rem, 1.6vw, 1.15rem);
  line-height: 1.6;
  color: var(--text);
  max-width: 38rem;
  margin-top: 1.5rem;
}
.hero-lead + .hero-lead { margin-top: 0.9rem; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 2rem;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 470;
  padding: 0.58rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease),
              color 0.2s var(--ease), transform 0.12s var(--ease), box-shadow 0.2s var(--ease);
}
.btn .icon { width: 0.95rem; height: 0.95rem; color: var(--brand, currentColor); }
.btn:hover {
  border-color: var(--border-strong);
  color: var(--text-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--text-strong);
  color: var(--bg);
  border-color: var(--text-strong);
}
.btn-primary:hover { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover .icon { color: var(--accent-ink); }

.btn[data-brand="email"]    { --brand: #EA4335; }
.btn[data-brand="linkedin"] { --brand: #0A66C2; }
.btn[data-brand="github"]   { --brand: #1b1817; }
.btn[data-brand="scholar"]  { --brand: #4285F4; }
.btn[data-brand="cv"]       { --brand: #F59E0B; }
:root[data-theme="dark"] .btn[data-brand="github"] { --brand: #e6edf3; }

/* ---------- sections (editorial 2-column) ---------- */
.section {
  display: grid;
  grid-template-columns: var(--label-col) minmax(0, 1fr);
  column-gap: clamp(1.5rem, 4vw, 3.5rem);
  margin-top: clamp(3.5rem, 8vw, 6rem);
}
.section-label {
  grid-column: 1;
  align-self: start;
  position: sticky;
  top: 5.5rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-faint);
  padding-top: 0.35rem;
}
.section-label::before {
  counter-increment: sec;
  content: counter(sec, decimal-leading-zero);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: none;
  color: var(--accent);
}
.section-label::after {
  content: "";
  width: 1px;
  height: 2.75rem;
  margin-left: 0.35rem;
  background: linear-gradient(var(--border-strong), transparent);
}
.section-body { grid-column: 2; min-width: 0; }

.prose { max-width: 44rem; }
.prose p { color: var(--text-muted); }
.prose p + p { margin-top: 1rem; }
.prose a {
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: var(--border-strong);
  text-underline-offset: 3px;
  transition: color 0.2s var(--ease), text-decoration-color 0.2s var(--ease);
}
.prose a:hover { color: var(--accent); text-decoration-color: var(--accent); }

/* ---------- expertise ---------- */
.skills { display: flex; flex-direction: column; gap: 1.35rem; }
.skill-row {
  display: grid;
  grid-template-columns: 7rem minmax(0, 1fr);
  gap: 0.6rem 1.4rem;
  align-items: start;
}
.skill-cat {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-faint);
  padding-top: 0.45rem;
}
.chips { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.chip {
  font-size: 0.83rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.35rem 0.72rem;
  border-radius: 999px;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), transform 0.2s var(--ease);
}
.chip:hover { border-color: var(--border-strong); transform: translateY(-2px); }

/* ---------- rows (experience / education / service) ---------- */
.rows { display: flex; flex-direction: column; }
.row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.3rem 2rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
}
.row:first-child { padding-top: 0; }
.row:last-child { border-bottom: 0; padding-bottom: 0; }
.row-title { color: var(--text-strong); font-weight: 500; grid-column: 1; }
.row-org { color: var(--text-muted); font-size: 0.95rem; grid-column: 1; }
.row-desc {
  grid-column: 1;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.55;
  margin-top: 0.5rem;
  max-width: 42rem;
}
.row-project {
  grid-column: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.85rem;
  max-width: 42rem;
  margin-top: 0.85rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-left: 2px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--surface);
}
.row-project-tag {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: var(--accent);
  padding-top: 0.2rem;
  flex-shrink: 0;
}
.row-project p {
  flex: 1;
  min-width: 14rem;
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--text-muted);
}
.row-project strong { color: var(--text-strong); font-weight: 600; }
.row-project a {
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: var(--border-strong);
  text-underline-offset: 2px;
  transition: color 0.2s var(--ease), text-decoration-color 0.2s var(--ease);
}
.row-project a:hover { color: var(--accent); text-decoration-color: var(--accent); }
.row-date {
  grid-column: 2;
  grid-row: 1;
  align-self: start;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-faint);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  text-align: right;
  padding-top: 0.15rem;
}
.row-simple { grid-template-columns: 7rem 1fr; align-items: baseline; }
.row-simple .row-title { font-weight: 460; color: var(--text-muted); }
.row-val { color: var(--text-strong); transition: color 0.2s var(--ease); }
a.row-val:hover { color: var(--accent); }

/* ---------- publications ---------- */
.pub-list { display: flex; flex-direction: column; gap: 0.75rem; }
.pub {
  padding: 1.3rem 1.4rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.pub:hover { border-color: var(--border-strong); transform: translateY(-3px); box-shadow: var(--shadow); }

.pub-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}
.pub-title {
  color: var(--text-strong);
  font-weight: 520;
  font-size: 1.02rem;
  letter-spacing: -0.012em;
  transition: color 0.2s var(--ease);
}
a.pub-title:hover { color: var(--accent); }
.pub-year {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-faint);
  font-variant-numeric: tabular-nums;
}
.pub-authors { font-size: 0.9rem; color: var(--text-muted); margin-top: 0.5rem; }

.pub-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.75rem;
}
.pub-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
}

.pub-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 0.9rem;
  margin-top: 0.95rem;
  padding-top: 0.95rem;
  border-top: 1px solid var(--border);
}
.pub-type {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  background: var(--accent-soft);
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
}
.pub-venue { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-faint); }
.pub-links { display: flex; gap: 1rem; margin-left: auto; }
.pub-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.83rem;
  color: var(--text-muted);
  transition: color 0.2s var(--ease);
}
.pub-links a:hover { color: var(--accent); }

.section-foot { margin-top: 1.5rem; }
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  font-weight: 470;
  color: var(--text-muted);
  transition: color 0.2s var(--ease);
}
.link-arrow:hover { color: var(--text-strong); }

/* ---------- links grid (brand-coloured) ---------- */
.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(13rem, 1fr));
  gap: 0.7rem;
}
.link-card {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text-muted);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease),
              transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.link-card:hover {
  color: var(--text-strong);
  border-color: var(--border-strong);
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}
.link-card .icon { width: 1.15rem; height: 1.15rem; color: var(--brand, currentColor); }
.link-card span:not(.ext) { font-size: 0.9rem; }
.link-card .ext {
  margin-left: auto;
  opacity: 0;
  color: var(--text-faint);
  transition: opacity 0.2s var(--ease);
}
.link-card:hover .ext { opacity: 1; }

.link-card[data-brand="linkedin"]     { --brand: #0A66C2; }
.link-card[data-brand="github"]       { --brand: #1b1817; }
.link-card[data-brand="scholar"]      { --brand: #4285F4; }
.link-card[data-brand="researchgate"] { --brand: #00CCBB; }
.link-card[data-brand="x"]            { --brand: #101010; }
.link-card[data-brand="medium"]       { --brand: #111111; }
.link-card[data-brand="stack"]        { --brand: #F48024; }
.link-card[data-brand="strava"]       { --brand: #FC4C02; }
.link-card[data-brand="flickr"]       { --brand: #FF0084; }
:root[data-theme="dark"] .link-card[data-brand="github"] { --brand: #e6edf3; }
:root[data-theme="dark"] .link-card[data-brand="x"]      { --brand: #e7e9ea; }
:root[data-theme="dark"] .link-card[data-brand="medium"] { --brand: #e7e9ea; }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding-block: 2.75rem;
  margin-top: clamp(4rem, 9vw, 6rem);
}
.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
}
.site-footer p, .to-top {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-faint);
}
.to-top { display: inline-flex; align-items: center; gap: 0.4rem; transition: color 0.2s var(--ease); }
.to-top:hover { color: var(--text-strong); }

/* ---------- reveal ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
  will-change: opacity, transform;
}
[data-reveal].in-view { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; }
}
@media (scripting: none) {
  [data-reveal] { opacity: 1; transform: none; }
}

/* ---------- responsive ---------- */
@media (max-width: 60rem) {
  .hero {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: left;
  }
  .hero-main { grid-column: 1; order: 2; }
  .hero-figure { grid-column: 1; order: 1; place-items: start; }
  .avatar { width: 5.5rem; height: 5.5rem; }
  .hero-figure::before { inset: -60% -30%; }
}

@media (max-width: 56rem) {
  .section {
    grid-template-columns: 1fr;
    row-gap: 1.4rem;
  }
  .section-label {
    position: static;
    grid-column: 1;
    flex-direction: row;
    align-items: baseline;
    gap: 0.6rem;
    padding-bottom: 0.9rem;
    border-bottom: 1px solid var(--border);
  }
  .section-label::before { font-size: 0.85rem; }
  .section-label::after { display: none; }
  .section-body { grid-column: 1; }
}

@media (max-width: 40rem) {
  body { font-size: 1rem; }
  .pub-links { margin-left: 0; width: 100%; }
  .pub-head { flex-wrap: wrap; }
  .row { grid-template-columns: 1fr; }
  .row-date { grid-column: 1; grid-row: auto; text-align: left; padding-top: 0.1rem; }
  .row-simple { grid-template-columns: 1fr; }
  .skill-row { grid-template-columns: 1fr; gap: 0.5rem; }
  .skill-cat { padding-top: 0; }
  .links-grid { grid-template-columns: 1fr; }
  .nav { gap: 1rem; }
  .nav a { font-size: 0.8375rem; }
}

@media (max-width: 34rem) {
  .brand-sur { display: none; }
  .brand-text { display: none; }
  .nav { gap: 0.8rem; }
  .nav a { font-size: 0.8125rem; }
}