/* ============================================================
   nafiz95.github.io — shared stylesheet
   Queen's tricolor on warm paper, JetBrains Mono throughout
   ============================================================ */

/* ---- DESIGN TOKENS ---- */
:root {
  --paper:        #fdfaf2;
  --paper-2:      #f4efe2;
  --ink:          #1a1a1a;
  --ink-2:        #555;
  --ink-3:        #888;

  --q-red:        #9d1939;
  --q-blue:       #11335d;
  --q-gold:       #c79a1e;
  --q-gold-text:  #8a6a10;

  --red-bg:       rgba(157, 25, 57, 0.05);
  --blue-bg:      rgba(17, 51, 93, 0.05);
  --gold-bg:      rgba(199, 154, 30, 0.12);

  --divider:      #d8d2c2;
  --divider-soft: #ebe3d0;

  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --radius-card: 12px;
  --radius-chip: 999px;
}

/* ---- RESET ---- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
h1, h2, h3, h4, h5, h6 { margin: 0; }
p { margin: 0; }
ul { margin: 0; }
a { text-decoration: none; }
button { font-family: inherit; }

/* ---- BASE ---- */
html {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 13px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--paper);
  background-image:
    radial-gradient(rgba(0,0,0,0.03) 1px, transparent 1px),
    radial-gradient(rgba(0,0,0,0.02) 1px, transparent 1px);
  background-size: 22px 22px, 22px 22px;
  background-position: 0 0, 11px 11px;
}

::selection { background: rgba(199,154,30,0.4); color: #1a1a1a; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(0,0,0,0.18);
  border-radius: 4px;
  border: 2px solid var(--paper);
}
::-webkit-scrollbar-thumb:hover { background: rgba(0,0,0,0.3); }

/* ---- LAYOUT SHELL ---- */
.site-shell {
  display: grid;
  grid-template-columns: 210px 1fr;
  min-height: 100vh;
}

.main-content {
  padding: 28px 32px 60px;
  max-width: 1240px;
  animation: fadeUp 0.45s ease both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   SIDEBAR
   ============================================================ */
.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  background: var(--paper-2);
  border-right: 1.25px solid var(--ink);
  padding: 24px 18px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  overflow-y: auto;
  overflow-x: hidden;
}

.brand-name {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
  font-family: var(--mono);
}

.brand-path {
  font-size: 10.5px;
  color: var(--ink-3);
  margin-top: 2px;
  font-family: var(--mono);
}

.sidebar-eyebrow {
  font-size: 9.5px;
  letter-spacing: 0.18em;
  color: var(--ink-3);
  margin-bottom: 8px;
  font-family: var(--mono);
  text-transform: uppercase;
}

.sidebar-nav-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-item {
  display: block;
  padding: 7px 10px;
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 12.5px;
  background: transparent;
  color: #333;
  font-weight: 400;
  transition: background 0.15s, color 0.15s;
  text-decoration: none;
}

.nav-item:hover { background: rgba(157, 25, 57, 0.08); }

.nav-item.active {
  background: var(--q-red);
  color: var(--paper);
  font-weight: 700;
}

.nav-item.active:hover { background: var(--q-red); }

.sidebar-links {
  display: flex;
  flex-direction: column;
  gap: 5px;
  font-family: var(--mono);
  font-size: 11.5px;
}

.sidebar-links a {
  color: var(--ink);
  text-decoration: none;
  transition: color 0.15s;
}

.sidebar-links a:hover { color: var(--q-red); }

.sidebar-footer {
  margin-top: auto;
  font-size: 10px;
  color: var(--ink-3);
  line-height: 1.6;
  font-family: var(--mono);
}

.sidebar-footer .built { color: #bbb; }

/* ============================================================
   SHARED COMPONENTS
   ============================================================ */

/* ---- CARD ---- */
.card {
  background: #fff;
  border: 1.25px solid var(--ink);
  border-radius: var(--radius-card);
  padding: 18px;
  transition: box-shadow 0.18s ease, transform 0.18s ease, border-color 0.18s ease;
}

.card--hover:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px -8px rgba(0,0,0,0.18), 0 2px 6px -2px rgba(0,0,0,0.08);
}

.card--p0 { padding: 0; }

.card--tinted-red  { background: var(--red-bg);   border-color: var(--q-red); }
.card--tinted-blue { background: var(--blue-bg);  border-color: var(--q-blue); }
.card--tinted-gold { background: var(--gold-bg);  border-color: var(--q-gold); }
.card--tinted-ink  { background: var(--paper-2);  border-color: var(--ink); }

/* ---- EYEBROW ---- */
.eyebrow {
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 600;
  font-family: var(--mono);
  color: var(--ink);
}

.eyebrow--red  { color: var(--q-red); }
.eyebrow--blue { color: var(--q-blue); }
.eyebrow--gold { color: var(--q-gold-text); }
.eyebrow--ink  { color: var(--ink); }

/* ---- CHIP ---- */
.chip {
  display: inline-flex;
  align-items: center;
  border: 1.25px solid var(--ink);
  color: var(--ink);
  background: transparent;
  padding: 3px 9px;
  border-radius: var(--radius-chip);
  font-size: 10.5px;
  font-family: var(--mono);
  cursor: default;
  white-space: nowrap;
  user-select: none;
  transition: all 0.15s ease;
}

.chip--clickable { cursor: pointer; }
.chip--clickable:hover { transform: translateY(-1px); }

.chip--red  { border-color: var(--q-red);       color: var(--q-red); }
.chip--blue { border-color: var(--q-blue);      color: var(--q-blue); }
.chip--gold { border-color: var(--q-gold);      color: var(--q-gold-text); background: var(--gold-bg); }
.chip--ink  { border-color: var(--ink);         color: var(--ink); }

.chip--red.active  { background: var(--q-red);      color: #fff; border-color: var(--q-red); }
.chip--blue.active { background: var(--q-blue);     color: #fff; border-color: var(--q-blue); }
.chip--gold.active { background: var(--q-gold-text);color: #fff; border-color: var(--q-gold-text); }
.chip--ink.active  { background: var(--ink);        color: #fff; border-color: var(--ink); }

/* ---- STAT TILE ---- */
.stat-tile { padding: 16px; }

.stat-tile .eyebrow { display: block; }

.stat-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-top: 6px;
}

.stat-number {
  font-size: 30px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  font-family: var(--mono);
}

.stat-sub {
  font-size: 10.5px;
  opacity: 0.75;
  margin-top: 4px;
  font-family: var(--mono);
}

.stat-tile--red  .stat-number,
.stat-tile--red  .stat-sub   { color: var(--q-red); }
.stat-tile--blue .stat-number,
.stat-tile--blue .stat-sub   { color: var(--q-blue); }
.stat-tile--gold .stat-number,
.stat-tile--gold .stat-sub   { color: var(--q-gold-text); }
.stat-tile--ink  .stat-number,
.stat-tile--ink  .stat-sub   { color: var(--ink); }

/* ---- SPARKLINE ---- */
.sparkline { flex: 1; }
.sparkline svg { width: 100%; height: 28px; }

/* ---- EXTERNAL LINK ---- */
.ext-link {
  color: var(--ink);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 12px;
  display: inline-flex;
  align-items: center;
  gap: 3px;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s, color 0.15s;
}

.ext-link:hover { border-bottom-color: currentColor; }

.ext-link--red  { color: var(--q-red); }
.ext-link--blue { color: var(--q-blue); }
.ext-link--gold { color: var(--q-gold-text); }
.ext-link--ink  { color: var(--ink); }

/* ---- PAGE HEADER ---- */
.page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(0,0,0,0.12);
  flex-wrap: wrap;
}

.page-header h1 {
  font-family: var(--mono);
  font-size: 36px;
  font-weight: 700;
  line-height: 1.05;
  margin: 6px 0 0;
  letter-spacing: -0.01em;
}

.page-header .subtitle {
  font-size: 13px;
  color: var(--ink-2);
  margin-top: 8px;
  max-width: 60ch;
  line-height: 1.55;
}

/* ---- FILTER BAR ---- */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--divider);
}

.filter-label {
  font-size: 11px;
  color: var(--ink-3);
  font-family: var(--mono);
  letter-spacing: 0.12em;
}

.filter-count {
  margin-left: auto;
  font-size: 11px;
  color: #666;
  font-family: var(--mono);
}

/* ---- SEE ALL / INLINE LINK ---- */
.see-all {
  font-size: 11px;
  color: var(--q-red);
  font-family: var(--mono);
  text-decoration: none;
  cursor: pointer;
}
.see-all:hover { text-decoration: underline; }

/* ---- DOWNLOAD BUTTON ---- */
.btn-download {
  background: var(--q-red);
  color: #fff;
  padding: 8px 14px;
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: opacity 0.15s;
}
.btn-download:hover { opacity: 0.9; color: #fff; }

/* ---- CHIP ROW ---- */
.chip-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

/* ============================================================
   HOME PAGE
   ============================================================ */

.home-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

/* Explicit placement for correct bento layout */
.profile-card        { grid-column: 1; grid-row: 1 / 3; overflow: hidden; }
.research-focus-card { grid-column: 2 / 4; grid-row: 1; }
.stat-triplet        { grid-column: 2 / 4; grid-row: 2; display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 14px; }
.recent-pubs-card    { grid-column: 1 / 3; grid-row: 3; }
.now-card            { grid-column: 3; grid-row: 3; }
.featured-projects-card { grid-column: 1 / 4; grid-row: 4; }

/* Profile card contents */
.profile-photo {
  height: 220px;
  border-bottom: 1.25px solid var(--ink);
  overflow: hidden;
  background: repeating-linear-gradient(135deg, transparent 0 7px, rgba(0,0,0,0.07) 7px 8px), var(--paper-2);
  display: flex;
  align-items: center;
  justify-content: center;
}

.profile-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.profile-photo-placeholder {
  color: var(--ink-3);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  font-family: var(--mono);
}

.profile-body { padding: 16px 18px 18px; }

.profile-name {
  font-family: var(--mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.1;
}

.profile-role {
  font-size: 11.5px;
  color: var(--q-red);
  margin-top: 4px;
  font-family: var(--mono);
}

.profile-affil {
  font-size: 11px;
  color: #666;
  margin-top: 8px;
  line-height: 1.55;
  font-family: var(--mono);
}

.profile-links {
  border-top: 1px dashed var(--divider);
  margin-top: 14px;
  padding-top: 12px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 11px;
}

/* Research focus */
.research-headline {
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  margin-top: 10px;
}

.research-sub {
  font-size: 12px;
  color: var(--ink-2);
  line-height: 1.6;
  margin-top: 10px;
  max-width: 64ch;
}

/* Recent pubs on home */
.recent-pubs-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 10px;
}

.recent-pubs-row {
  display: grid;
  grid-template-columns: 50px 1fr 90px;
  gap: 14px;
  align-items: baseline;
  padding: 10px 0;
  font-family: var(--mono);
  font-size: 12px;
  cursor: pointer;
  color: inherit;
  text-decoration: none;
}

.recent-pubs-row:not(:last-child) { border-bottom: 1px dashed var(--divider); }
.recent-pubs-row:hover .recent-pub-title { color: var(--q-red); }

.recent-pub-year   { font-weight: 700; }
.recent-pub-title  { color: var(--ink); line-height: 1.4; transition: color 0.15s; }
.recent-pub-venue  { color: var(--ink-3); font-size: 10.5px; text-align: right; }

/* Now card */
.now-list {
  padding-left: 16px;
  margin: 10px 0 0;
  font-size: 12px;
  line-height: 1.6;
  color: #333;
  font-family: var(--mono);
}

.now-list li + li { margin-top: 6px; }

/* Featured projects strip */
.featured-projects-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 14px;
}

.proj-thumb-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.proj-thumb {
  border: 1px solid var(--divider);
  border-radius: 10px;
  padding: 12px;
  font-family: var(--mono);
  cursor: pointer;
  background: #fff;
  text-decoration: none;
  display: block;
  transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
}

.proj-thumb:hover {
  transform: translateY(-1px);
  border-color: var(--ink);
  box-shadow: 0 6px 20px -10px rgba(0,0,0,0.18);
}

.proj-thumb-img {
  height: 56px;
  border-radius: 6px;
  margin-bottom: 10px;
}

.proj-thumb-title {
  font-size: 11px;
  font-weight: 700;
  line-height: 1.3;
}

.proj-thumb-area {
  font-size: 10px;
  color: #666;
  margin-top: 4px;
  line-height: 1.5;
}

/* ============================================================
   PUBLICATIONS PAGE
   ============================================================ */

.stats-strip-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 22px;
}

.year-group { margin-bottom: 26px; }

.year-header {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 12px;
}

.year-number {
  font-family: var(--mono);
  font-size: 32px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1;
  letter-spacing: -0.02em;
}

.year-rule { flex: 1; height: 1px; background: var(--divider); }

.year-count {
  font-size: 11px;
  color: var(--ink-3);
  font-family: var(--mono);
}

.pub-list { display: flex; flex-direction: column; gap: 10px; }

.pub-card {
  overflow: hidden;
}

.pub-card-inner {
  display: grid;
  grid-template-columns: 6px 1fr;
  align-items: stretch;
}

.pub-stripe { /* set background via inline style */ }

.pub-body { padding: 14px 18px; }

.pub-title-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}

.pub-title {
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.3;
  flex: 1;
  min-width: 40ch;
}

.pub-venue-badge {
  font-size: 11px;
  font-family: var(--mono);
  font-weight: 600;
  white-space: nowrap;
}

.pub-authors {
  font-size: 11.5px;
  color: var(--ink-2);
  margin-top: 6px;
  font-family: var(--mono);
  line-height: 1.5;
}

.pub-footer {
  display: flex;
  gap: 6px;
  margin-top: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.pub-abstract-panel {
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: 6px;
  font-size: 12px;
  line-height: 1.6;
  color: #333;
  font-family: var(--mono);
  display: none;
}

.pub-abstract-panel.open {
  display: block;
  animation: fadeUp 0.18s ease both;
}

.pub-abstract-toggle {
  font-size: 11px;
  font-family: var(--mono);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  transition: opacity 0.15s;
}

.pub-abstract-toggle:hover { opacity: 0.75; }

.earlier-card { margin-top: 28px; }

.earlier-title {
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 600;
  margin-top: 8px;
}

.earlier-body {
  font-size: 12px;
  color: var(--ink-2);
  margin-top: 8px;
  line-height: 1.6;
}

/* ============================================================
   PROJECTS PAGE
   ============================================================ */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.project-card {
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.project-card-header {
  height: 130px;
  border-bottom-width: 1px;
  border-bottom-style: solid;
  position: relative;
  display: flex;
  align-items: flex-end;
  padding: 12px;
}

.project-area-pill {
  font-family: var(--mono);
  font-size: 10px;
  background: #fff;
  padding: 3px 8px;
  border-radius: 999px;
  border-width: 1px;
  border-style: solid;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.project-card-body {
  padding: 16px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-title {
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink);
}

.project-year-role {
  font-size: 10.5px;
  margin-top: 4px;
  font-family: var(--mono);
}

.project-desc {
  font-size: 11.5px;
  color: var(--ink-2);
  line-height: 1.55;
  margin-top: 10px;
  flex: 1;
}

.project-tags {
  margin-top: 12px;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.project-footer {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--divider);
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.project-status {
  font-family: var(--mono);
  font-size: 10.5px;
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
}

/* ============================================================
   CV PAGE
   ============================================================ */

.cv-layout {
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: 28px;
  align-items: flex-start;
}

.cv-rail {
  position: sticky;
  top: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cv-section { margin-bottom: 30px; }

.cv-section-header {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--divider);
}

.cv-section-title {
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.cv-entry {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 20px;
  padding-bottom: 16px;
  margin-bottom: 16px;
  border-bottom: 1px dashed var(--divider-soft);
  align-items: flex-start;
}

.cv-entry:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }

.cv-entry-date {
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.5;
}

.cv-entry-badge {
  display: inline-block;
  margin-top: 8px;
  font-size: 9.5px;
  padding: 2px 7px;
  border-radius: 999px;
  border: 1px solid;
  letter-spacing: 0.06em;
  font-family: var(--mono);
}

.cv-entry-role {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.3;
}

.cv-entry-org {
  font-size: 12px;
  margin-top: 3px;
  font-family: var(--mono);
}

.cv-entry-bullets {
  padding-left: 18px;
  margin: 8px 0 0;
  font-size: 12px;
  line-height: 1.6;
  color: #444;
}

.cv-entry-bullets li { margin-bottom: 4px; }

.cert-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.rail-glance-row {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.9;
  color: var(--ink);
}

.ref-entry {
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--divider-soft);
  font-family: var(--mono);
  font-size: 11px;
}

.ref-entry:last-of-type { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }

.ref-name  { font-weight: 700; color: var(--ink); }
.ref-role  { color: #666; margin-top: 2px; line-height: 1.5; }

/* ============================================================
   RESPONSIVE — Mobile (≤ 720px)
   ============================================================ */
@media (max-width: 720px) {
  .site-shell { grid-template-columns: 1fr; }

  .sidebar {
    position: relative;
    height: auto;
    flex-direction: row;
    flex-wrap: wrap;
    border-right: none;
    border-bottom: 1.25px solid var(--ink);
    padding: 12px 16px;
    gap: 12px;
    align-items: center;
  }

  .sidebar-footer { display: none; }

  .main-content { padding: 20px 16px 40px; }

  .home-grid {
    display: flex;
    flex-direction: column;
  }

  .stat-triplet {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
  }

  .proj-thumb-grid { grid-template-columns: repeat(2, 1fr); }

  .stats-strip-4 { grid-template-columns: repeat(2, 1fr); }

  .projects-grid { grid-template-columns: 1fr; }

  .cv-layout { grid-template-columns: 1fr; }

  .cv-rail { position: static; }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .recent-pubs-row { grid-template-columns: 40px 1fr; }
  .recent-pub-venue { display: none; }
}

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