/* =====================================================
   Avijit Roy — Site Styles (Light/Dark + Consistent Rhythm)
   ===================================================== */

/* ---------- Theme Vars ---------- */
:root {
  --bg: #ffffff;
  --text: #0f172a;
  --muted: #5b6472;
  --border: #e5eaf3;
  --card: #ffffff;
  --brand: #0a66c2;
  --brand-700: #0956a3;
  --chip: #fff;
  --chip-hover: #f8fbff;
  --nav-bg: rgba(255, 255, 255, .9);
  --shadow: 0 6px 16px rgba(2, 12, 27, .06);
  --accent-color: var(--brand);

  --space-1: 6px;
  --space-2: 10px;
  --space-3: 14px;
  --space-4: 18px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 42px;

  --radius-1: 6px;
  --radius-2: 8px;
  --radius-3: 12px;
}

html[data-theme="dark"] {
  --bg: #0b1220;
  --text: #e6edf3;
  --muted: #97a3b6;
  --border: #1f2a44;
  --card: #0f172a;
  --brand: #69b1ff;
  --brand-700: #5aa1ec;
  --chip: #0f172a;
  --chip-hover: #162036;
  --nav-bg: rgba(11, 18, 32, .9);
  --shadow: 0 8px 18px rgba(0, 0, 0, .4);
  --accent-color: var(--brand);
}

/* Visually hidden (for screen reader announcements) */
.sr-only {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  overflow: hidden;
  white-space: nowrap;
}

/* ---------- Base ---------- */
* {
  box-sizing: border-box
}


html,
body {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth
}

body {
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  background: var(--bg);
  color: var(--text);
  transition: background .2s ease, color .2s ease;
  line-height: 1.5;
}

img {
  max-width: 100%;
  display: block
}

a {
  color: var(--brand);
  text-decoration: none
}

.container {
  max-width: 980px;
  margin: var(--space-6) auto;
  padding: 0 var(--space-5);
}

.section {
  padding: var(--space-6) 0 var(--space-7);
}

@media (max-width: 600px) {
  .section {
    padding: var(--space-5) 0 var(--space-6);
  }
}

.section-block {
  margin-top: var(--space-6);
}

.section-block ul li {
  margin-bottom: 6px;
}

h1,
h2,
h3 {
  margin: 0 0 var(--space-3);
}

p {
  margin: 0 0 var(--space-3);
}

/* Muted Colors */
.muted {
  color: var(--muted);
  font-size: 0.95em;
  line-height: 1.5;
  opacity: 0.9;
}

html[data-theme="dark"] .muted {
  color: #c4c9d2;
  opacity: 0.9;
}


/* Muted Links */
.muted a {
  color: var(--accent-color);
  text-decoration: none;
  opacity: 0.85;
}

.muted a:hover,
.muted a:focus-visible {
  opacity: 1;
  text-decoration: underline;
}


/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--nav-bg);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  padding: var(--space-2) 0;
}

.brand {
  font-weight: 800;
  letter-spacing: .2px;
  color: var(--text);
}

.brand span {
  color: var(--brand);
}

/* small github icon next to brand */
.brand-github {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-left: 8px;
  color: var(--text);
  border-radius: 6px;
  padding: 6px;
  border: 1px solid transparent;
}

.brand-github i {
  font-size: 14px
}

.brand-github:hover {
  background: var(--chip-hover);
}

.nav-links {
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

.nav-links a {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-2);
  color: var(--text);
}

.nav-links a.active,
.nav-links a:hover {
  background: var(--chip-hover);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.hamburger {
  display: none;
  background: transparent;
  border: 0;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  margin: 4px 0;
  border-radius: 2px;
}

.theme-toggle {
  border: 1px solid var(--border);
  background: transparent;
  border-radius: var(--radius-2);
  padding: var(--space-2);
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  cursor: pointer;
}

.theme-toggle:hover {
  box-shadow: var(--shadow);
}

/* ---------- Buttons ---------- */
.button {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 10px 14px;
  border-radius: var(--radius-2);
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-weight: 600;
  transition: transform .06s ease, box-shadow .12s ease, background .12s;
}

.button:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow);
  background: var(--chip-hover);
}

.button.primary {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
}

.button.primary:hover {
  background: var(--brand-700);
}

.button.small {
  padding: 7px 10px;
  border-radius: var(--radius-1);
  /* border: #0a66c2; */
  font-size: .92rem;
}

.button.icon {
  padding: 8px 10px;
}

.button.icon i {
  font-size: 16px;
  line-height: 1;
  display: block;
}

.button:focus-visible {
  outline: 2px solid color-mix(in oklab, var(--brand) 60%, transparent);
  outline-offset: 3px;
}

.socials a:focus-visible {
  outline: 2px solid color-mix(in oklab, var(--brand) 60%, transparent);
  outline-offset: 3px;
  border-radius: 8px;
}

.cta {
  display: flex;
  gap: var(--space-1);
  flex-wrap: wrap;
  margin-top: var(--space-2);
}

/* ---------- Hero ---------- */
.hero {
  display: grid;
  grid-template-columns: 1fr 180px;
  gap: var(--space-5);
  align-items: center;
}

.hero h1 {
  font-size: 2.2rem;
  margin-bottom: var(--space-2);
}

.hero p.lead {
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0;
}

.avatar {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  border: 3px solid var(--border);
  overflow: hidden;
  justify-self: end;
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* ---------- Cards / Blocks ---------- */
.card-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-3);
  padding: var(--space-4);
}

.block {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-3);
  padding: var(--space-4);
  margin-top: var(--space-4);
}

/* ---------- Projects ---------- */
.page-head {
  margin-bottom: var(--space-3);
}

.page-head h1 {
  margin: 0 0 var(--space-2);
}

.search-wrap {
  position: relative;
  margin: 0 0 var(--space-3);
}

.search {
  width: 100%;
  padding: 10px 36px 10px 12px;
  border-radius: var(--radius-2);
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
}

.clear-btn {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  width: 26px;
  height: 26px;
  border-radius: var(--radius-1);
  line-height: 24px;
  text-align: center;
  font-weight: 700;
  cursor: pointer;
}

.clear-btn:hover {
  background: var(--chip-hover);
}

.filter-bar {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin: 0 0 var(--space-4);
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 7px 12px;
  border-radius: var(--radius-2);
  border: 1px solid var(--border);
  background: var(--chip);
  color: var(--text);
  cursor: pointer;
  transition: background .12s ease, box-shadow .12s ease;
}

.chip:hover {
  background: var(--chip-hover);
  box-shadow: var(--shadow);
}

.chip.active {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
}

#projectGrid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

/* Inline tag chips under each project */
.tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  list-style: none;
  padding: 0;
  margin: 10px 0 0;
}

.tags li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  background: var(--chip);
  border-radius: 999px;
  font-size: .9rem;
  cursor: default;
}

/* Contact note links: improve hover & accessibility */
.contact-note a {
  color: var(--accent-color);
  text-decoration: none;
}

.contact-note a:hover,
.contact-note a:focus-visible {
  text-decoration: underline;
  outline: none;
}

/* Make inline tags look clickable and consistent */
.tags li.clickable {
  cursor: pointer;
}

.tags li.clickable:hover {
  box-shadow: var(--shadow);
  background: var(--chip-hover);
}

/* project title + repo link */
.card h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: space-between;
}

.repo-link {
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 6px 8px;
  border-radius: var(--radius-2);
  border: 1px solid transparent;
}

.repo-link i {
  font-size: 16px
}

.repo-link:hover {
  background: var(--chip-hover);
}

/* ---------- Teaching ---------- */
details {
  border: 1px solid var(--border);
  border-radius: var(--radius-3);
  background: var(--card);
  margin: var(--space-3) 0;
  padding: var(--space-3);
  overflow: hidden;
  transition: background .2s ease, border-color .2s ease;
}

details>summary {
  cursor: pointer;
  font-weight: 700;
  margin: calc(-1 * var(--space-3)) calc(-1 * var(--space-3)) 0;
  padding: var(--space-3);
  border-radius: var(--radius-3);
  /* rounded corners when closed */
  transition: background .12s ease;
  /* smoother hover */
}

details[open]>summary {
  border-bottom: 1px solid var(--border);
  border-radius: var(--radius-3) var(--radius-3) 0 0;
  /* top corners rounded when open */
}

.inst {
  display: block;
  color: var(--muted);
  margin-top: var(--space-2);
}

/* ---------- Footer ---------- */
.site-footer {
  margin-top: var(--space-6);
  padding: var(--space-4) 0;
  border-top: 1px solid var(--border);
  background: color-mix(in oklab, var(--card) 85%, transparent);
}

.foot-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  flex-wrap: wrap;
}

/* Social icons in footer */
.socials {
  display: flex;
  gap: 12px;
  align-items: center;
}

.socials a {
  color: var(--text);
  padding: 6px;
  border-radius: 6px;
  display: inline-flex
}

.socials a i {
  font-size: 16px
}

.socials a:hover {
  color: var(--brand);
  background: var(--chip-hover);
}

/* Mobile: center footer content and put copyright and socials in two rows */
@media (max-width:480px) {
  .foot-flex {
    justify-content: center;
    text-align: center;
    gap: 8px;
  }

  .foot-flex>p {
    width: 100%;
    order: 1
  }

  .socials {
    width: 100%;
    justify-content: center;
    order: 2
  }
}

/* ---------- Mobile Nav ---------- */
@media (max-width:900px) {
  .nav-links {
    display: none;
    position: absolute;
    right: 16px;
    top: 60px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-3);
    padding: 8px;
    flex-direction: column;
    gap: var(--space-2);
    min-width: 160px;
    z-index: 50;
    /* keep menu above header */
  }

  .nav-links.show {
    display: flex;
  }

  .hamburger {
    display: block;
  }

  .nav-links a {
    display: block;
    width: 100%;
    /* full clickable width */
    min-height: 44px;
    /* comfortable touch target */
    padding: 12px 14px;
    border-radius: 8px;
    color: var(--text);
    -webkit-tap-highlight-color: transparent;
    transition: background 0.2s ease, color 0.2s ease;
    text-align: center;
  }

  .nav-links a:hover,
  .nav-links a:focus-visible,
  .nav-links a[aria-current="page"],
  .nav-links a.active {
    background: var(--chip-hover);
    color: var(--brand);
  }

  .nav-links a+a {
    margin-top: 4px;
  }
}

/* ---------- Responsive Hero ---------- */
@media (max-width:800px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-4);
  }

  .avatar {
    justify-self: center;
    margin-top: var(--space-3);
  }

  .hero .cta {
    justify-content: center;
  }
}

/* ---------- Tablet ---------- */
@media (min-width:768px) and (max-width:1024px) {
  .avatar {
    width: 220px;
    height: 220px;
  }
}

/* Small-screen container padding so site doesn't feel edge-to-edge on phones */
@media (max-width:480px) {
  .container {
    padding: 0 18px;
  }

  /* reduce footer height on phones */
  .site-footer {
    padding: 12px 0;
  }

  .foot-flex {
    gap: 8px;
  }
}

/* Make the recent highlights / card-list responsive to two columns on larger screens */
@media (min-width:700px) {
  .card-list {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
  }
}

/* improve focus for mobile nav links */
.nav-links a:focus-visible {
  outline: 2px solid color-mix(in oklab, var(--brand) 60%, transparent);
  outline-offset: 3px;
}

/* details/summary improvements for Teaching page */
details>summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

details>summary:hover,
details>summary:focus-visible {
  background: color-mix(in oklab, var(--chip-hover) 90%, #fff);
}

/* Reduce motion preference */
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }

  .button:hover {
    transform: none !important;
    box-shadow: none !important;
  }
}

/* Avatar flexibility  */
/* Desktop (>=1025px) */
@media (min-width: 1025px) {
  .hero {
    grid-template-columns: 1fr 250px;
    /* match avatar width */
  }

  .avatar {
    width: 250px;
    height: 250px;
  }

}

/* Tablet (768–1024px) */
@media (min-width: 768px) and (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr 200px;
  }

  .avatar {
    width: 220px;
    height: 220px;
  }

  body {
    margin: 0px 10px 0px 10px;
  }
}

/* Mobile (<768px) — already stacks vertically */
@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .avatar {
    justify-self: center;
    margin-top: var(--space-3);
    width: 200px;
    height: 200px;
  }

  body {
    margin: 0px 10px 0px 10px;
  }
}

/* =====================================================
   Course Page
   ===================================================== */

/* .csci-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
} */


#assessments,
#policies,
#weekly-plan,
#tools,
#github,
#books {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.timeline .card h3 {
  margin-bottom: var(--space-1);
}

/* CSCI-272 page refinements */
.section-block .card ul {
  margin-top: .25rem;
}

.section-block .card ul li+li {
  margin-top: .25rem;
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: var(--space-4) 0;
}

.sem {
  font-style: italic;
  font-size: 0.75em;
  font-weight: normal;
  margin-left: 0.5em;
  color: var(--muted);
}

.instructor-info {
  margin-top: 1rem; 
  margin-bottom: 0;
}

.syllabus {
  margin-top: 0.75rem;
}
/* ========================================
  College Logo
   ========================================*/
.overview-container {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
}

.overview-logo{
  flex-shrink: 0;
}

.overview-logo img {
  height: 60px;
  width: auto;
  content: url("../../assets/img/JJC_Logo_WHT.png");
  /* Default to white logo (dark mode) */
}

/* Change logo for light mode */
[data-theme="light"] .overview-logo img {
  content: url("../../assets/img/JJC_Logo.png");
  /* Use dark logo for light mode */
}

.overview-logo img {
  height: 60px;
  /* Default height for desktop */
  width: auto;
}

/* On screens smaller than 768px, stack the items */
@media (max-width: 768px) {
  .overview-container {
    flex-direction: column;
  }

  .overview-logo {
    /* margin-top: 1rem; */
    /* Center the logo when stacked on mobile */
    display: flex;
    flex-shrink: 0;
    justify-content: center;
  }

  .overview-logo img {
    height: 50px;
    /* Smaller height for mobile */
  }
}

/* Beautiful table styling */
/* Base table */
.nice-table {
  --table-header-bg: linear-gradient(135deg,
      color-mix(in oklab, var(--brand) 70%, var(--card) 30%),
      color-mix(in oklab, var(--brand-700) 70%, var(--card) 30%));
  --table-border: color-mix(in oklab, var(--border) 94%, transparent);
  --table-stripe: color-mix(in oklab, var(--card) 94%, var(--text) 6%);
  --table-hover: color-mix(in oklab, var(--card) 88%, var(--brand) 12%);
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text);
  box-shadow: var(--shadow);
  border-radius: 12px;
  border: 1px solid var(--table-border);
  overflow: hidden;
}

/* Header */
.nice-table thead {
  background: var(--table-header-bg);
  color: #ffffff;
}

.nice-table thead tr th {
  padding: 0.85rem 1rem;
  text-align: left;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-size: 0.85rem;
  border-bottom: 1px solid color-mix(in oklab, #000 35%, var(--brand) 65%);
}

/* Body cells */
.nice-table tbody tr td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--table-border);
  vertical-align: middle;
}

/* Zebra striping */
.nice-table tbody tr:nth-child(even) {
  background-color: var(--table-stripe);
}

/* Hover effect */
.nice-table tbody tr:hover {
  background-color: var(--table-hover);
  transition: background-color 0.15s ease-in-out;
}

/* Dark theme tweaks so header isn't too bright */
html[data-theme="dark"] .nice-table {
  --table-header-bg: linear-gradient(135deg,
      color-mix(in oklab, var(--brand) 42%, var(--card) 58%),
      color-mix(in oklab, var(--brand-700) 42%, var(--card) 58%));
  --table-stripe: color-mix(in oklab, var(--card) 86%, var(--text) 14%);
  --table-hover: color-mix(in oklab, var(--card) 80%, var(--brand) 20%);
}

/* First & last column tweaks (optional) */
.nice-table tbody tr td:first-child,
.nice-table thead tr th:first-child {
  padding-left: 1.25rem;
}

.nice-table tbody tr td:last-child,
.nice-table thead tr th:last-child {
  padding-right: 1.25rem;
}

/* Compact style on very small screens */
@media (max-width: 640px) {
  .nice-table {
    font-size: 0.85rem;
  }

  .nice-table thead tr th,
  .nice-table tbody tr td {
    padding: 0.6rem 0.75rem;
  }
}

/* Week Plan */
.weekly-nested {
  padding-left: 0;
  list-style: none;
}

.weekly-nested > li {
  margin-bottom: 1rem;
}

.weekly-nested > li > ul {
  margin-top: 0.35rem;
  margin-left: 1rem;
}

.weekly-nested li p,
.weekly-nested li strong {
  margin: 0.15rem 0;
}