/* ==========================================================================
   University of the Punjab (PU) GPA & CGPA Calculator Stylesheet
   Modern, Highly Organized, Ultra-Responsive UI
   Themed to match official PU Coat of Arms:
   - Deep River Navy: #08284d
   - 5-Rivers Cerulean Blue: #0082ba
   - Ribbon Gold / Bronze: #be855c
   - Rising Sun Crimson: #c92a2a
   - Sky Mist Tint: #f2f6fa
   ========================================================================== */

:root {
  /* Official PU Palette */
  --pu-navy: #08284d;
  --pu-navy-dark: #051930;
  --pu-navy-light: #0f3d73;
  --pu-blue: #0082ba;
  --pu-blue-hover: #006e9e;
  --pu-blue-soft: #eaf4fb;
  --pu-blue-border: #bce1f5;
  
  --pu-gold: #be855c;
  --pu-gold-dark: #8c5731;
  --pu-gold-light: #fbf5ef;
  --pu-gold-border: #e4cbb9;

  --pu-crimson: #c92a2a;
  --pu-crimson-soft: #fee2e2;

  --bg-main: #f0f4f8;
  --bg-card: #ffffff;
  --bg-input: #ffffff;
  --border-color: #d3e1ec;
  --border-focus: #0082ba;

  --text-primary: #092038;
  --text-secondary: #39526b;
  --text-muted: #667f96;
  --text-white: #ffffff;

  /* Grade Badge Palette */
  --grade-a-bg: #d1fae5;
  --grade-a-text: #065f46;
  --grade-b-bg: #e0f2fe;
  --grade-b-text: #0284c7;
  --grade-c-bg: #fef3c7;
  --grade-c-text: #b45309;
  --grade-d-bg: #ffedd5;
  --grade-d-text: #c2410c;
  --grade-f-bg: #fee2e2;
  --grade-f-text: #b91c1c;

  --shadow-sm: 0 2px 5px rgba(8, 40, 77, 0.05);
  --shadow-md: 0 6px 18px rgba(8, 40, 77, 0.08);
  --shadow-lg: 0 12px 32px rgba(8, 40, 77, 0.12);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  --radius-full: 9999px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.app-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ==========================================================================
   Header
   ========================================================================== */
.pu-header {
  background: linear-gradient(135deg, var(--pu-navy-dark) 0%, var(--pu-navy) 60%, #006094 100%);
  color: var(--text-white);
  padding: 1rem 1.5rem;
  border-bottom: 3.5px solid var(--pu-gold);
  box-shadow: 0 4px 16px rgba(8, 40, 77, 0.18);
}

.header-inner {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.pu-crest {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.crest-logo-wrapper {
  width: 54px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), filter 0.25s ease;
  filter: drop-shadow(0 3px 8px rgba(0, 0, 0, 0.35));
}

.crest-logo-wrapper:hover {
  transform: scale(1.08) rotate(-4deg);
}

.pu-logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.university-name {
  font-family: 'Cinzel', serif;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: #f7df94;
  text-transform: uppercase;
}

.portal-title {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #ffffff;
  line-height: 1.2;
}

.portal-subtitle {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.82);
  margin-top: 0.1rem;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
}

/* Header Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.8rem;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  font-family: inherit;
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--pu-blue);
  color: white;
  border-color: var(--pu-blue);
}
.btn-primary:hover {
  background: var(--pu-blue-hover);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.25);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.22);
  border-color: var(--pu-gold);
}

.btn-danger-outline {
  background: rgba(201, 42, 42, 0.18);
  color: #ffc9c9;
  border-color: rgba(201, 42, 42, 0.35);
}
.btn-danger-outline:hover {
  background: rgba(201, 42, 42, 0.35);
  color: #ffffff;
}

.btn-sm {
  padding: 0.35rem 0.65rem;
  font-size: 0.76rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  background: white;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}
.btn-sm:hover {
  border-color: var(--pu-blue);
  color: var(--pu-blue);
  background: var(--pu-blue-soft);
}

.btn-micro {
  padding: 0.2rem 0.5rem;
  font-size: 0.72rem;
  font-weight: 700;
  border-radius: 4px;
  background: white;
  border: 1px solid var(--border-color);
  color: var(--pu-navy);
  cursor: pointer;
  transition: var(--transition);
}
.btn-micro:hover {
  background: var(--pu-blue-soft);
  border-color: var(--pu-blue);
}

/* ==========================================================================
   Hero Summary Section: Dedicated GPA & CGPA Cards
   ========================================================================== */
.hero-summary-section {
  max-width: 1240px;
  margin: 1.25rem auto 0;
  padding: 0 1.25rem;
  width: 100%;
}

.hero-cards-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.dash-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  position: relative;
  transition: var(--transition);
}

.dash-card:hover {
  box-shadow: var(--shadow-md);
}

.gpa-hero-card {
  border-top: 4px solid var(--pu-blue);
  background: linear-gradient(180deg, #f8fcff 0%, #ffffff 100%);
}

.cgpa-hero-card {
  border-top: 4px solid var(--pu-navy);
  background: linear-gradient(180deg, #fbfcfe 0%, #ffffff 100%);
}

.dash-card-header {
  padding: 1rem 1.25rem 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #edf4f9;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.dash-card-title-group {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.card-badge {
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  text-transform: uppercase;
}

.card-badge-gpa {
  background: var(--pu-blue-soft);
  color: var(--pu-blue);
  border: 1px solid var(--pu-blue-border);
}

.card-badge-cgpa {
  background: #fdf6ec;
  color: var(--pu-gold-dark);
  border: 1px solid var(--pu-gold-border);
}

.card-sem-name {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--pu-navy);
}

.sem-standing-badge {
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: #e2e8f0;
  color: #334155;
}

.cgpa-count-tag {
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--text-secondary);
  background: var(--bg-main);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
}

/* Card Body */
.dash-card-body {
  padding: 1rem 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.score-display-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.hero-score-wrapper {
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
  flex-shrink: 0;
}

.hero-score-val {
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--pu-navy);
  line-height: 1;
  letter-spacing: -0.02em;
}

.cgpa-highlight {
  color: var(--pu-blue);
}

.hero-score-max {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-muted);
}

.hero-score-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem 0.75rem;
  flex: 1;
  max-width: 320px;
}

.score-metric-box {
  background: var(--bg-main);
  padding: 0.45rem 0.65rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

.score-metric-box.double-width {
  grid-column: span 2;
}

.metric-label {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.metric-value {
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--pu-navy);
  margin-top: 0.1rem;
}

/* Progress bar inside CGPA card */
.cgpa-bar-wrapper {
  height: 7px;
  background: rgba(8, 40, 77, 0.1);
  border-radius: var(--radius-full);
  margin-top: 0.85rem;
  overflow: hidden;
}

.cgpa-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--pu-crimson) 0%, var(--pu-gold) 45%, var(--pu-blue) 100%);
  border-radius: var(--radius-full);
  transition: width 0.4s ease;
}

/* Card Footer */
.dash-card-footer {
  padding: 0.75rem 1.25rem;
  background: #f8fbfe;
  border-top: 1px solid #edf4f9;
}

.standing-hint {
  font-size: 0.74rem;
  color: var(--text-muted);
}

/* Quick Semester Selector inside CGPA Card */
.cgpa-sem-selector {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.sem-selector-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sem-selector-title {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.sem-quick-btns {
  display: flex;
  gap: 0.35rem;
}

.sem-chips-row {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.sem-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-full);
  font-size: 0.74rem;
  font-weight: 700;
  background: white;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  user-select: none;
}

.sem-chip:hover {
  border-color: var(--pu-blue);
  color: var(--pu-blue);
}

.sem-chip.active {
  background: var(--pu-navy);
  color: white;
  border-color: var(--pu-navy);
}

.sem-chip input[type="checkbox"] {
  display: none;
}

/* ==========================================================================
   Main Content Area & Semester Switcher
   ========================================================================== */
.main-content {
  max-width: 1240px;
  margin: 1.25rem auto 2rem;
  padding: 0 1.25rem;
  width: 100%;
  flex: 1;
}

.semester-nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: white;
  padding: 0.65rem 1rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.25rem;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.semester-nav-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--pu-navy);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-shrink: 0;
}

.semester-pills-scroll {
  display: flex;
  gap: 0.45rem;
  overflow-x: auto;
  padding: 0.2rem 0;
  scrollbar-width: thin;
  flex: 1;
}

.sem-pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.85rem;
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition);
}

.sem-pill-btn:hover {
  border-color: var(--pu-blue);
  color: var(--pu-blue);
  background: var(--pu-blue-soft);
}

.sem-pill-btn.active {
  background: var(--pu-navy);
  color: white;
  border-color: var(--pu-navy);
  box-shadow: 0 2px 8px rgba(8, 40, 77, 0.2);
}

.sem-pill-gpa {
  font-size: 0.72rem;
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-full);
  background: white;
  color: var(--pu-blue);
  font-weight: 800;
}

.sem-pill-btn.active .sem-pill-gpa {
  background: var(--pu-blue);
  color: #ffffff;
}

.view-mode-pill {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  background: var(--bg-main);
  padding: 0.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  flex-shrink: 0;
}

.btn-view-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.65rem;
  font-size: 0.76rem;
  font-weight: 700;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.btn-view-toggle.active {
  background: white;
  color: var(--pu-navy);
  box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   Semester Container & Responsive Course Cards
   ========================================================================== */
.semesters-container {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.semester-card {
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: var(--transition);
}

.semester-header {
  background: linear-gradient(to right, #f6fafe, #ffffff);
  padding: 0.9rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.sem-title-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.sem-heading {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--pu-navy);
}

.sem-include-label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-secondary);
  cursor: pointer;
  background: white;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
}

.sem-include-check {
  width: 15px;
  height: 15px;
  accent-color: var(--pu-blue);
  cursor: pointer;
}

.sem-quick-metrics {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.metric-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.metric-pill strong {
  color: var(--pu-navy);
  font-weight: 800;
}

/* Responsive Course Table / Grid */
.courses-wrapper {
  padding: 0.5rem 1.25rem;
}

.course-grid-header {
  display: grid;
  grid-template-columns: 2.2fr 1fr 1.6fr 0.9fr 1fr 0.9fr 1fr 40px;
  gap: 0.75rem;
  padding: 0.65rem 0.75rem;
  background: #f7fafc;
  border-radius: var(--radius-md);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  align-items: center;
}

.courses-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.course-row {
  display: grid;
  grid-template-columns: 2.2fr 1fr 1.6fr 0.9fr 1fr 0.9fr 1fr 40px;
  gap: 0.75rem;
  padding: 0.65rem 0.75rem;
  background: white;
  border: 1px solid #e2edf6;
  border-radius: var(--radius-md);
  align-items: center;
  transition: var(--transition);
}

.course-row:hover {
  border-color: var(--pu-blue-border);
  background: #fbfdff;
}

/* Inputs inside Course Row */
.input-course-code {
  width: 100%;
  padding: 0.45rem 0.65rem;
  font-size: 0.84rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  font-family: inherit;
  transition: var(--transition);
}

.input-course-code:focus {
  outline: none;
  border-color: var(--pu-blue);
  box-shadow: 0 0 0 3px rgba(0, 130, 186, 0.12);
}

.select-credits {
  width: 100%;
  padding: 0.45rem 0.5rem;
  font-size: 0.82rem;
  font-weight: 700;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  cursor: pointer;
}

.input-marks-container {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.input-marks {
  width: 100%;
  padding: 0.45rem 0.55rem;
  font-size: 0.86rem;
  font-weight: 700;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  text-align: center;
  background: var(--bg-input);
}

.input-marks:focus {
  outline: none;
  border-color: var(--pu-blue);
  box-shadow: 0 0 0 3px rgba(0, 130, 186, 0.12);
}

.btn-open-comp {
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  flex-shrink: 0;
  transition: var(--transition);
}

.btn-open-comp:hover {
  background: var(--pu-blue-soft);
  color: var(--pu-blue);
  border-color: var(--pu-blue);
}

.input-mode-toggle {
  font-size: 0.68rem;
  color: var(--pu-blue);
  cursor: pointer;
  text-decoration: underline;
  margin-top: 0.2rem;
  display: block;
}

.select-grade {
  width: 100%;
  padding: 0.45rem 0.5rem;
  font-size: 0.82rem;
  font-weight: 700;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  cursor: pointer;
}

/* Badges for Grade */
.badge-grade {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  padding: 0.25rem 0.55rem;
  font-size: 0.8rem;
  font-weight: 800;
  border-radius: var(--radius-sm);
}

.badge-a { background: var(--grade-a-bg); color: var(--grade-a-text); }
.badge-b { background: var(--grade-b-bg); color: var(--grade-b-text); }
.badge-c { background: var(--grade-c-bg); color: var(--grade-c-text); }
.badge-d { background: var(--grade-d-bg); color: var(--grade-d-text); }
.badge-f { background: var(--grade-f-bg); color: var(--grade-f-text); }

.badge-repeat-req {
  font-size: 0.66rem;
  font-weight: 800;
  background: var(--pu-crimson-soft);
  color: var(--pu-crimson);
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  display: inline-block;
  margin-top: 0.15rem;
}

.badge-imp-req {
  font-size: 0.66rem;
  font-weight: 800;
  background: #ffedd5;
  color: #c2410c;
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  display: inline-block;
  margin-top: 0.15rem;
}

.rounded-marks-cell {
  font-weight: 800;
  font-size: 0.86rem;
  color: var(--pu-navy);
  text-align: center;
}

.gp-cell {
  font-weight: 700;
  font-size: 0.84rem;
  color: var(--text-secondary);
  text-align: center;
}

.weighted-gp-cell {
  font-weight: 800;
  font-size: 0.9rem;
  color: var(--pu-blue);
  text-align: center;
}

.btn-remove-course {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: #fff;
  border: 1px solid #fecaca;
  color: #dc2626;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.btn-remove-course:hover {
  background: #fee2e2;
  color: #991b1b;
}

/* Semester Footer */
.semester-footer {
  padding: 0.85rem 1.25rem;
  background: #f8fbfe;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.sem-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-add-course {
  background: var(--pu-blue-soft);
  color: var(--pu-navy);
  border: 1px dashed var(--pu-blue);
  padding: 0.45rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.btn-add-course:hover {
  background: var(--pu-blue);
  color: white;
  border-style: solid;
}

.sem-summary-stats {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.8rem;
}

.sem-summary-item strong {
  font-weight: 800;
  color: var(--pu-navy);
}

/* Mobile responsive layout for Course Rows */
.mobile-course-meta {
  display: none;
}

/* ==========================================================================
   Modals
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(8, 40, 77, 0.45);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}

.modal-overlay.active {
  display: flex;
  animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.98); }
  to { opacity: 1; transform: scale(1); }
}

.modal-window {
  background: white;
  width: 100%;
  max-width: 680px;
  max-height: 90vh;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-top: 4px solid var(--pu-blue);
}

.modal-window.modal-sm {
  max-width: 460px;
}

.modal-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #f8fbfe;
}

.modal-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--pu-navy);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 1.25rem;
  overflow-y: auto;
}

.modal-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.modal-footer {
  padding: 0.85rem 1.25rem;
  border-top: 1px solid var(--border-color);
  background: #f8fbfe;
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

/* Component breakdown form */
.comp-row {
  margin-bottom: 0.85rem;
}

.comp-row label {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

.input-with-max {
  display: flex;
  align-items: center;
  position: relative;
}

.input-with-max input,
.comp-row input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-family: inherit;
}

.input-with-max input {
  padding-right: 55px;
}

.input-with-max input:focus,
.comp-row input:focus {
  outline: none;
  border-color: var(--pu-blue);
  box-shadow: 0 0 0 3px rgba(0, 130, 186, 0.12);
}

.input-readonly {
  background: #f1f5f9;
  color: var(--text-muted);
  cursor: not-allowed;
}

.max-badge {
  position: absolute;
  right: 10px;
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--text-muted);
}

.comp-result-box {
  background: var(--pu-blue-soft);
  border: 1px solid var(--pu-blue-border);
  border-radius: var(--radius-md);
  padding: 0.8rem 1rem;
  margin-top: 1rem;
}

.comp-result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  margin-bottom: 0.3rem;
}

.comp-result-row.highlight {
  font-size: 0.92rem;
  color: var(--pu-navy);
  border-top: 1px dashed var(--pu-blue-border);
  border-bottom: 1px dashed var(--pu-blue-border);
  padding: 0.35rem 0;
  margin: 0.4rem 0;
}

/* Target Result */
.target-result-card {
  background: #f0fdf4;
  border: 2px solid #86efac;
  border-radius: var(--radius-md);
  padding: 0.9rem;
  text-align: center;
  margin-top: 1rem;
}

.target-result-title {
  font-size: 0.76rem;
  font-weight: 800;
  color: #166534;
  text-transform: uppercase;
}

.target-result-gpa {
  font-size: 2rem;
  font-weight: 800;
  color: #15803d;
  margin: 0.2rem 0;
}

.target-result-status {
  font-size: 0.78rem;
  font-weight: 600;
  color: #166534;
}

/* Rules Table inside Modal */
.rules-section {
  margin-bottom: 1.25rem;
}

.rules-section h3 {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--pu-navy);
  margin-bottom: 0.5rem;
}

.rules-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
  margin-bottom: 0.75rem;
}

.rules-table th {
  background: #f1f6fa;
  padding: 0.45rem 0.65rem;
  border: 1px solid var(--border-color);
  font-weight: 700;
  color: var(--text-primary);
}

.rules-table td {
  padding: 0.4rem 0.65rem;
  border: 1px solid var(--border-color);
}

.rules-list {
  padding-left: 1.25rem;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.rules-list li {
  margin-bottom: 0.35rem;
}

.badge {
  display: inline-block;
  padding: 0.15rem 0.45rem;
  font-size: 0.74rem;
  font-weight: 700;
  border-radius: 4px;
}

.badge-success { background: #d1fae5; color: #065f46; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger { background: #fee2e2; color: #991b1b; }

/* ==========================================================================
   Footer
   ========================================================================== */
.pu-footer {
  background: #ffffff;
  border-top: 1px solid var(--border-color);
  padding: 1.25rem 1.5rem;
  margin-top: auto;
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.footer-inner {
  max-width: 1240px;
  margin: 0 auto;
}

.footer-note {
  margin-top: 0.25rem;
  font-size: 0.74rem;
  color: #7b92a6;
}

/* ==========================================================================
   Responsive Breakpoints & Mobile Optimization
   ========================================================================== */
@media (max-width: 900px) {
  .hero-cards-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .pu-header {
    padding: 0.85rem 1rem;
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .header-actions {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 0.25rem;
  }

  .hero-summary-section {
    padding: 0 1rem;
  }

  .score-display-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.85rem;
  }

  .hero-score-metrics {
    width: 100%;
    max-width: 100%;
  }

  .main-content {
    padding: 0 1rem;
  }

  .semester-nav-bar {
    padding: 0.5rem 0.75rem;
  }

  /* Transform Desktop Course Grid into Mobile Course Cards */
  .course-grid-header {
    display: none;
  }

  .course-row {
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
    padding: 0.85rem;
    background: #fdfefe;
    border: 1.5px solid #d9e6f2;
    border-radius: var(--radius-lg);
    position: relative;
  }

  .mobile-course-top {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
  }

  .mobile-course-top .input-course-code {
    flex: 1;
    font-weight: 600;
  }

  .mobile-course-inputs {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 0.5rem;
    width: 100%;
  }

  .mobile-course-results {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--pu-blue-soft);
    padding: 0.4rem 0.65rem;
    border-radius: var(--radius-md);
    font-size: 0.78rem;
    width: 100%;
    flex-wrap: wrap;
    gap: 0.35rem;
  }

  .sem-summary-stats {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }
}

@media (max-width: 480px) {
  .hero-score-val {
    font-size: 2.2rem;
  }

  .sem-chips-row {
    gap: 0.25rem;
  }

  .sem-chip {
    padding: 0.15rem 0.4rem;
    font-size: 0.7rem;
  }
}

/* ==========================================================================
   Print / PDF Transcript Stylesheet
   ========================================================================== */
.print-transcript {
  display: none;
}

@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  .app-container,
  .quickstart-banner,
  .modal-overlay {
    display: none !important;
  }

  .print-transcript {
    display: block !important;
    width: 100% !important;
  }
}

/* ==========================================================================
   How to Use? Button (Gold accent to stand out)
   ========================================================================== */
.btn-help-guide {
  background: linear-gradient(135deg, var(--pu-gold), #d4974d);
  color: #ffffff;
  border-color: var(--pu-gold-dark);
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(190, 133, 92, 0.45);
  animation: pulse-gold 2.5s ease-in-out 1.5s 3;
}
.btn-help-guide:hover {
  background: linear-gradient(135deg, #d4974d, var(--pu-gold));
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(190, 133, 92, 0.6);
}

@keyframes pulse-gold {
  0%, 100% { box-shadow: 0 2px 8px rgba(190, 133, 92, 0.45); }
  50% { box-shadow: 0 0 0 6px rgba(190, 133, 92, 0.25), 0 4px 14px rgba(190, 133, 92, 0.6); }
}

/* ==========================================================================
   Quick-Start Steps Banner
   ========================================================================== */
.quickstart-banner {
  background: linear-gradient(90deg, var(--pu-navy) 0%, #0f4a80 100%);
  border-bottom: 2px solid var(--pu-gold);
  padding: 0.65rem 1.25rem;
}
.quickstart-banner.hidden {
  display: none;
}

.quickstart-inner {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  position: relative;
}

.qs-step {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex: 1;
  min-width: 160px;
}

.qs-num {
  width: 30px;
  height: 30px;
  background: var(--pu-gold);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.88rem;
  flex-shrink: 0;
}

.qs-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.qs-text strong {
  font-size: 0.82rem;
  color: #ffffff;
  font-weight: 700;
}
.qs-text span {
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.72);
}

.qs-arrow {
  color: var(--pu-gold);
  font-size: 0.85rem;
  flex-shrink: 0;
}

.qs-close {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-sm);
  padding: 0.3rem 0.55rem;
  cursor: pointer;
  font-size: 0.9rem;
  transition: var(--transition);
  margin-left: auto;
  flex-shrink: 0;
}
.qs-close:hover {
  background: rgba(255, 255, 255, 0.22);
  color: #fff;
}

@media (max-width: 700px) {
  .qs-arrow { display: none; }
  .quickstart-inner { gap: 0.5rem; }
  .qs-step { min-width: 140px; }
}

/* ==========================================================================
   Welcome / How-to-Use Modal
   ========================================================================== */
.welcome-modal {
  max-width: 600px;
  width: 94vw;
  max-height: 92vh;
  overflow-y: auto;
}

.welcome-header {
  background: linear-gradient(135deg, var(--pu-navy-dark), var(--pu-navy));
  color: white;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.welcome-header .modal-title {
  color: #ffffff;
}
.welcome-header .modal-close {
  color: rgba(255,255,255,0.7);
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.2);
}
.welcome-header .modal-close:hover {
  color: #fff;
  background: rgba(255,255,255,0.22);
}

.welcome-logo-row {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.welcome-logo,
.welcome-logo-img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  flex-shrink: 0;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.35));
}

.welcome-icon-placeholder {
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.18);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #ffffff;
  flex-shrink: 0;
}

.welcome-steps {
  padding: 1rem 1.25rem 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.welcome-step {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 0.75rem;
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.welcome-step:hover {
  border-color: var(--pu-blue-border);
  background: var(--pu-blue-soft);
}

.ws-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  flex-shrink: 0;
}

.ws-content {
  flex: 1;
}

.ws-num {
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 2px;
}

.ws-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 3px;
}

.ws-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

.welcome-tips {
  margin: 0.25rem 1.25rem 0.75rem;
  background: var(--pu-gold-light);
  border: 1px solid var(--pu-gold-border);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.tip-item {
  font-size: 0.79rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  line-height: 1.4;
}
.tip-item i {
  margin-top: 2px;
  flex-shrink: 0;
}

.tip-item.tip-highlight {
  background: #ffffff;
  border: 1.5px solid var(--pu-blue-border);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.75rem;
  align-items: flex-start;
  gap: 0.65rem;
}
.tip-item.tip-highlight i {
  margin-top: 3px;
}

.welcome-dont-show {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
}
.welcome-dont-show input {
  cursor: pointer;
  accent-color: var(--pu-blue);
}

/* ==========================================================================
   Quick Cumulative CGPA Tool (Previous CGPA Method)
   ========================================================================== */
.quick-cgpa-section {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-top: 2rem;
  box-shadow: var(--shadow-sm);
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: var(--pu-gold-light);
  color: var(--pu-gold-dark);
  border: 1px solid var(--pu-gold-border);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.6rem;
}

.seo-section-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--pu-navy);
  margin-bottom: 0.4rem;
  line-height: 1.3;
}

.seo-section-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1.2rem;
}

.quick-cgpa-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1rem;
  margin-bottom: 1.2rem;
}

.quick-input-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.quick-input-group label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.quick-input-group input {
  padding: 0.6rem 0.8rem;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-family: inherit;
  font-weight: 600;
  color: var(--text-primary);
  background: var(--bg-input);
  transition: var(--transition);
}

.quick-input-group input:focus {
  outline: none;
  border-color: var(--pu-blue);
  box-shadow: 0 0 0 3px rgba(0, 130, 186, 0.15);
}

.quick-cgpa-actions {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

.quick-cgpa-result {
  margin-top: 1.25rem;
  padding: 1rem 1.25rem;
  background: var(--pu-blue-soft);
  border: 1.5px solid var(--pu-blue-border);
  border-radius: var(--radius-md);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  align-items: center;
}

.qc-result-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.qc-result-item span {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.qc-result-item strong {
  font-size: 1.1rem;
  color: var(--text-primary);
}

.qc-result-item .qc-val {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--pu-blue);
}

/* ==========================================================================
   Educational Guide & SEO Ranking Section
   ========================================================================== */
.seo-guide-section {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 2rem;
  margin-bottom: 2rem;
}

.guide-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
}

.guide-heading {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--pu-navy);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.6rem;
}

.guide-heading i {
  color: var(--pu-gold);
  font-size: 1.15rem;
}

.guide-lead {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

/* Formula Boxes */
.formula-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.formula-box {
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  transition: var(--transition);
}

.formula-box:hover {
  border-color: var(--pu-blue-border);
  background: var(--pu-blue-soft);
}

.formula-title {
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--pu-navy);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.formula-equation {
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.82rem;
  font-weight: 700;
  background: #ffffff;
  border: 1px solid var(--border-color);
  padding: 0.45rem 0.65rem;
  border-radius: var(--radius-sm);
  color: var(--pu-navy-dark);
  margin-bottom: 0.5rem;
}

.formula-explanation {
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

/* SEO Alert Box */
.seo-alert-box {
  background: var(--pu-gold-light);
  border: 1.5px solid var(--pu-gold-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
}

.seo-alert-box i {
  color: var(--pu-gold-dark);
  font-size: 1.25rem;
  margin-top: 0.15rem;
  flex-shrink: 0;
}

.seo-alert-box strong {
  display: block;
  font-size: 0.88rem;
  color: var(--pu-navy);
  margin-bottom: 0.25rem;
}

.seo-alert-box p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
}

/* SEO Tables */
.seo-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin-top: 0.5rem;
}

.seo-table th {
  background: var(--pu-navy);
  color: #ffffff;
  font-weight: 700;
  padding: 0.75rem 1rem;
  text-align: left;
  border: 1px solid var(--pu-navy-dark);
}

.seo-table td {
  padding: 0.65rem 1rem;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.seo-table tbody tr:nth-child(even) {
  background: #f8fafc;
}

.seo-table tbody tr:hover {
  background: var(--pu-blue-soft);
}

/* Standing Rules Cards */
.standing-rules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.2rem;
}

.standing-rule-card {
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.2rem;
}

.standing-rule-card h3 {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--pu-navy);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.standing-rule-card h3 i {
  color: var(--pu-blue);
}

.standing-rule-card ul {
  padding-left: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

.standing-rule-card.highlight-degree {
  background: var(--pu-blue-soft);
  border-color: var(--pu-blue-border);
}

.standing-rule-card.highlight-degree h3 i {
  color: var(--pu-gold);
}

.standing-rule-card.highlight-degree p {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* FAQ Accordion */
.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.faq-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-main);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item[open] {
  border-color: var(--pu-blue-border);
  background: #ffffff;
}

.faq-question {
  padding: 0.9rem 1.15rem;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--pu-navy);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
  user-select: none;
  transition: var(--transition);
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question:hover {
  color: var(--pu-blue);
  background: var(--pu-blue-soft);
}

.faq-chevron {
  color: var(--pu-blue);
  font-size: 0.85rem;
  transition: transform 0.25s ease;
}

.faq-item[open] .faq-chevron {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 1.15rem 1rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  border-top: 1px dashed var(--border-color);
  padding-top: 0.75rem;
}

.faq-answer code {
  background: var(--pu-blue-soft);
  color: var(--pu-navy);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.82rem;
}