/* =====================================================================
   ENG 6812 — Research Methods for Texts & Technology
   Lab notebook aesthetic: warm, humanistic, teal-green palette
   ===================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Caveat:wght@400;600;700&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,400&display=swap');

/* ─── Custom Properties ─────────────────────────────────────────── */
:root {
  --primary:      #478a7a;
  --accent:       #2e6b5e;
  --bg:           #fafaf7;
  --surface:      #ffffff;
  --text:         #1e2d2a;
  --text-muted:   #5a7068;
  --border:       #c8dbd7;
  --grid-color:   rgba(71, 138, 122, 0.12);
  --handwriting:  'Caveat', cursive;
  --body-font:    Tahoma, 'DM Sans', 'Jost', system-ui, sans-serif;
  --radius:       6px;
  --shadow:       0 2px 8px rgba(46, 107, 94, 0.12);
}

/* ─── Reset & Base ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--body-font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background-color: var(--bg);
  /* Subtle graph-paper grid */
  background-image:
    linear-gradient(var(--grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
  background-size: 28px 28px;
  background-attachment: fixed;
}

/* ─── Typography ────────────────────────────────────────────────── */
h1, h2, h3, h4, h5 {
  line-height: 1.25;
  color: var(--accent);
  font-weight: 600;
}
h1 { font-size: clamp(1.6rem, 4vw, 2.4rem); }
h2 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h3 { font-size: clamp(1.05rem, 2.5vw, 1.3rem); }
h4 { font-size: 1.05rem; color: var(--primary); }

p { margin-bottom: 0.9em; }
p:last-child { margin-bottom: 0; }

a { color: var(--accent); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--primary); text-decoration-thickness: 2px; }

ul, ol { padding-left: 1.4em; margin-bottom: 0.9em; }
li { margin-bottom: 0.3em; }

em, i { font-style: italic; }
strong, b { font-weight: normal; }

/* ─── Handwriting Accent Class ──────────────────────────────────── */
.script {
  font-family: var(--handwriting);
  font-weight: 600;
}

/* ─── Layout Wrapper ────────────────────────────────────────────── */
.site-wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ─── Site Header / Nav ─────────────────────────────────────────── */
.site-header {
  background-color: var(--accent);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 6px rgba(0,0,0,0.18);
}

.site-header .site-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.65rem;
  padding-bottom: 0.65rem;
  flex-wrap: wrap;
}

.site-header .course-id {
  font-family: var(--handwriting);
  font-size: 1.25rem;
  font-weight: 700;
  color: #f0faf7;
  text-decoration: none;
  white-space: nowrap;
}
.site-header .course-id:hover { color: #ffffff; }

.site-nav {
  display: flex;
  gap: 0.25rem;
  align-items: center;
  flex-wrap: wrap;
}

.site-nav a {
  color: #d4ede9;
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius);
  transition: background 0.15s, color 0.15s;
}
.site-nav a:hover,
.site-nav a.active {
  background: rgba(255,255,255,0.18);
  color: #ffffff;
}

/* ─── Hero Section ──────────────────────────────────────────────── */
.hero {
  background-color: var(--primary);
  background-image:
    linear-gradient(rgba(255,255,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.06) 1px, transparent 1px),
    linear-gradient(135deg, var(--accent) 0%, var(--primary) 60%);
  background-size: 28px 28px, 28px 28px, 100% 100%;
  padding: 3.5rem 1.25rem 3rem;
  text-align: center;
}

.hero .course-number {
  font-family: var(--handwriting);
  font-size: 1.1rem;
  color: #b8ddd7;
  display: block;
  margin-bottom: 0.35rem;
  letter-spacing: 0.04em;
}

.hero h1 {
  color: #f0faf7;
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  margin-bottom: 0.4rem;
}

.hero .instructor {
  color: #c8e8e3;
  font-size: 1.05rem;
  margin-bottom: 1.1rem;
}

.hero .tagline {
  font-family: var(--handwriting);
  font-size: clamp(1.15rem, 3vw, 1.5rem);
  color: #f0faf7;
  display: inline-block;
  max-width: 540px;
  line-height: 1.35;
  border-top: 1px solid rgba(255,255,255,0.3);
  padding-top: 0.8rem;
  margin-top: 0.4rem;
}

/* ─── Main Content Card ─────────────────────────────────────────── */
.content-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem 2rem;
  margin: 1.5rem 0;
  box-shadow: var(--shadow);
}

.content-card + .content-card { margin-top: 0; border-top: none; }

/* ─── Section Labels ────────────────────────────────────────────── */
.section-label {
  font-family: var(--handwriting);
  font-size: 1.05rem;
  color: var(--primary);
  display: block;
  margin-bottom: 1.1rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--border);
}

/* ─── Week Blocks (Syllabus) ────────────────────────────────────── */
.week-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.25rem 1.5rem;
  margin: 1.25rem 0;
  box-shadow: var(--shadow);
}

.week-block.no-class {
  border-left-color: #b0c8c4;
  background: #f5f8f7;
}

.week-heading {
  font-size: 1rem;
  font-weight: normal;
  color: var(--accent);
  margin-bottom: 0.85rem;
  line-height: 1.4;
  font-family: var(--body-font);
}

.week-block .week-links {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.75rem;
}

.week-block .week-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  background: #eef6f4;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  text-decoration: none;
  border: 1px solid var(--border);
  transition: background 0.15s;
}
.week-block .week-links a:hover { background: #d8ede9; }

.week-block ul {
  list-style: disc;
  padding-left: 1.4em;
  margin-bottom: 0;
}

.week-block li {
  padding: 0.3rem 0;
  border-bottom: 1px dashed #e0ebe9;
  font-size: 0.92rem;
}
.week-block li:last-child { border-bottom: none; }

.reading-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.1rem 0.45rem;
  border-radius: 3px;
  vertical-align: middle;
  margin-left: 0.3rem;
  white-space: nowrap;
}

.badge-oa {
  background: #e6f4ee;
  color: #1d6b4a;
  border: 1px solid #a8d8bb;
}

.badge-library {
  background: #e8f0f8;
  color: #2c5282;
  border: 1px solid #a0c0e0;
}

.badge-webcourses {
  background: #fff3e0;
  color: #7b4b10;
  border: 1px solid #f0c885;
}


/* ─── Course Info Grid ──────────────────────────────────────────── */
.course-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.info-item {
  background: #f0f7f5;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
}

.info-item .label {
  font-family: var(--handwriting);
  font-size: 0.9rem;
  color: var(--primary);
  display: block;
  margin-bottom: 0.2rem;
}

.info-item .value {
  font-size: 0.92rem;
  color: var(--text);
  font-weight: 500;
}

/* ─── Lab Page Components ───────────────────────────────────────── */
.lab-schedule {
  background: #f5f8f7;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 1rem 0;
}

.lab-schedule table {
  width: 100%;
  border-collapse: collapse;
}

.lab-schedule th {
  background: var(--primary);
  color: #f0faf7;
  padding: 0.5rem 0.85rem;
  text-align: left;
  font-size: 0.85rem;
  font-weight: 600;
}

.lab-schedule td {
  padding: 0.45rem 0.85rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.lab-schedule tr:last-child td { border-bottom: none; }
.lab-schedule tr:nth-child(even) td { background: #f0f5f4; }

.time-col {
  width: 5.5rem;
  font-family: var(--handwriting);
  font-size: 1rem;
  color: var(--primary);
  white-space: nowrap;
}

.activity-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin: 1rem 0;
}

.activity-block h3 {
  font-family: var(--handwriting);
  font-size: 1.15rem;
  color: var(--primary);
  margin-bottom: 0.65rem;
}

.checklist { list-style: none; padding-left: 0; }
.checklist li::before {
  content: '☐ ';
  color: var(--primary);
}

.materials-list { list-style: none; padding-left: 0; }
.materials-list li::before {
  content: '→ ';
  color: var(--primary);
  font-weight: bold;
}

/* ─── Slide Deck Nav (Reveal wrapper) ───────────────────────────── */
.deck-page-nav {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
  padding: 0.75rem 1rem;
  background: var(--accent);
}

.deck-page-nav a {
  color: #d4ede9;
  text-decoration: none;
  font-size: 0.85rem;
  padding: 0.3rem 0.75rem;
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 20px;
  transition: background 0.15s;
}
.deck-page-nav a:hover { background: rgba(255,255,255,0.2); color: white; }

/* ─── Footer ────────────────────────────────────────────────────── */
.site-footer {
  background: var(--accent);
  color: #b8d8d3;
  text-align: center;
  padding: 1.75rem 1.25rem;
  margin-top: 3rem;
  font-size: 0.85rem;
}

.site-footer a { color: #c8e5e0; }
.site-footer a:hover { color: white; }

.footer-nav {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.footer-nav a {
  text-decoration: none;
  font-weight: 500;
}

/* ─── Utility ───────────────────────────────────────────────────── */
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-2 { margin-bottom: 1rem; }

.highlight-box {
  background: #e6f4f0;
  border-left: 4px solid var(--primary);
  padding: 0.75rem 1rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 0.75rem 0;
  font-size: 0.92rem;
}

/* ─── Mobile Responsive ─────────────────────────────────────────── */
@media (max-width: 640px) {
  .site-header .site-wrap {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }
  .content-card { padding: 1.1rem 1.15rem; }
  .week-block { padding: 1rem 1.1rem; }
  .hero { padding: 2.25rem 1rem 2rem; }
  .lab-schedule td, .lab-schedule th { padding: 0.35rem 0.55rem; }
  .time-col { width: 4.5rem; }
  .course-info-grid { grid-template-columns: 1fr; }
}

@media (max-width: 400px) {
  .site-nav { gap: 0.15rem; }
  .site-nav a { font-size: 0.8rem; padding: 0.25rem 0.45rem; }
}