/* ==========================================================================
   VIT ACADEMIC CALCULATOR — PRODUCTION DESIGN SYSTEM
   Theme colors, typography, and layout.
   Text colors set to crisp normal white (#ffffff / #eaeff3) for high visibility.
   ========================================================================== */

:root {
  --navy: #0e2238;
  --navy-deep: #091626;
  --navy-panel: #122a44;
  --navy-panel-subtle: #153250;
  --line-soft: rgba(255, 255, 255, 0.12);
  --line-strong: rgba(255, 255, 255, 0.22);
  --line-focus: rgba(232, 163, 61, 0.6);

  /* High-contrast crisp white typography */
  --chalk: #ffffff;
  --chalk-dim: #f3f6f9;
  --muted: #e2e8f0;
  --muted-dark: #cbd5e1;

  --amber: #e8a33d;
  --amber-soft: #f0c267;
  --amber-dark: #c28224;
  --crimson: #c1443c;
  --crimson-soft: #e56a62;
  --emerald: #5b8a6d;
  --emerald-soft: #8fd0a6;

  --font-sans: 'Sora', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

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

html {
  font-size: 16px;
  overflow-x: hidden;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

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

/* Accessible Focus States (WCAG 2.4.7) */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--amber) !important;
  outline-offset: 2px !important;
}

/* Skip Link for Screen Readers & Keyboard Navigation (WCAG 2.4.1) */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--amber);
  color: #091626;
  padding: 10px 18px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
  z-index: 10000;
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 16px;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--navy);
  color: var(--chalk);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  width: 100%;
}

main {
  flex: 1 0 auto;
  width: 100%;
  overflow-x: hidden;
}

/* Technical CSS-Generated Grid Background with GPU Acceleration Layer */
.gridbg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-color: var(--navy);
  background-image:
    repeating-linear-gradient(0deg, rgba(255,255,255,0.05) 0 1px, transparent 1px 28px),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.05) 0 1px, transparent 1px 28px),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.12) 0 1px, transparent 1px 140px),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.12) 0 1px, transparent 1px 140px);
  pointer-events: none;
  will-change: transform;
  transform: translateZ(0);
}

.mono {
  font-family: var(--font-mono);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--amber-soft);
}

.wrap {
  width: 100%;
  max-width: 1060px;
  margin: 0 auto;
  padding: 0 16px;
}

@media (min-width: 600px) {
  .wrap {
    padding: 0 24px;
  }
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */
.site-header {
  border-bottom: none;
  background: rgba(14, 34, 56, 0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
}

.site-header::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(240, 194, 103, 0.2) 15%, rgba(240, 194, 103, 0.65) 50%, rgba(240, 194, 103, 0.2) 85%, transparent 100%);
  pointer-events: none;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
}

@media (min-width: 600px) {
  .header-inner {
    padding: 16px 24px;
  }
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-link {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #ffffff;
}

.brand-accent {
  color: var(--amber);
}

.brand-link .domain {
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.badge-tag {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--amber);
  border: 1px solid var(--amber);
  padding: 3px 7px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

@media (max-width: 540px) {
  .badge-tag {
    display: none;
  }
}

.desktop-nav {
  display: none;
}

@media (min-width: 860px) {
  .desktop-nav {
    display: flex;
    align-items: center;
    gap: 22px;
  }
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: #ffffff;
  padding: 6px 4px;
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--amber-soft);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--amber);
}

/* Dropdown */
.dropdown {
  position: relative;
}

.dropdown-toggle {
  background: transparent;
  border: none;
  color: #ffffff;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 4px;
}

.dropdown-toggle:hover, .dropdown.open .dropdown-toggle {
  color: var(--amber-soft);
}

.dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 12px);
  left: -20px;
  width: 290px;
  background: var(--navy-deep);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  padding: 8px 0;
  box-shadow: 0 12px 32px rgba(4, 11, 20, 0.7);
  z-index: 105;
}

.dropdown:hover .dropdown-menu,
.dropdown.open .dropdown-menu {
  display: block;
}

.dropdown-item {
  display: flex;
  flex-direction: column;
  padding: 10px 18px;
  border-left: 2px solid transparent;
}

.dropdown-item:hover {
  background: var(--navy-panel);
  border-left-color: var(--amber);
}

.dropdown-item .item-title {
  font-size: 0.86rem;
  font-weight: 700;
  color: #ffffff;
}

.dropdown-item .item-desc {
  font-size: 0.74rem;
  color: var(--muted);
  margin-top: 2px;
}

.dropdown-divider {
  height: 1px;
  background: var(--line-strong);
  margin: 6px 0;
}

.dropdown-item.directory-link .item-title {
  color: var(--amber);
  font-size: 0.82rem;
}

/* Mobile Hamburger Toggle */
.mobile-menu-toggle {
  display: flex;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  cursor: pointer;
  flex-direction: column;
  gap: 4px;
  min-width: 40px;
  min-height: 38px;
  justify-content: center;
  align-items: center;
}

@media (min-width: 860px) {
  .mobile-menu-toggle {
    display: none;
  }
}

.hamburger-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: #ffffff;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.mobile-nav-drawer {
  border-top: 1px solid var(--line-strong);
  background: var(--navy-deep);
  padding: 18px 20px 28px;
}

.mobile-nav-group-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--amber);
  margin: 16px 0 8px;
  font-weight: 700;
}

.mobile-nav-group-title:first-child {
  margin-top: 0;
}

.mobile-nav-link {
  display: block;
  padding: 10px 0;
  font-size: 0.95rem;
  font-weight: 600;
  color: #ffffff;
  border-bottom: 1px solid var(--line-soft);
}

.mobile-nav-link:last-child {
  border-bottom: none;
}

.mobile-nav-link.active {
  color: var(--amber-soft);
}

/* ==========================================================================
   HERO / BANNER SECTION
   ========================================================================== */
.hero-section {
  padding: 32px 0 28px;
  border-bottom: none;
  position: relative;
  width: 100%;
}

.hero-section::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(240, 194, 103, 0.2) 15%, rgba(240, 194, 103, 0.65) 50%, rgba(240, 194, 103, 0.2) 85%, transparent 100%);
  pointer-events: none;
}

@media (min-width: 768px) {
  .hero-section {
    padding: 48px 0 36px;
  }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: center;
}

@media (min-width: 860px) {
  .hero-grid {
    grid-template-columns: 1.25fr 0.85fr;
    gap: 36px;
  }
}

.hero-content h1,
.hero-section h1 {
  display: inline-block;
  font-size: clamp(1.65rem, 4vw, 2.45rem);
  font-weight: 800;
  line-height: 1.25;
  margin: 0 auto 14px;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff 0%, #fef08a 25%, #f59e0b 65%, #d97706 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: #f59e0b;
  filter: drop-shadow(0 2px 14px rgba(245, 158, 11, 0.25));
}

.hero-content .lede {
  color: #ffffff;
  font-size: 0.98rem;
  line-height: 1.65;
  margin: 0 0 18px;
  max-width: 58ch;
}

@media (min-width: 600px) {
  .hero-content .lede {
    font-size: 1.05rem;
  }
}

.spec-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}

.spec-pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: var(--navy-deep);
  border: 1px solid var(--line-strong);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  color: #ffffff;
}

.spec-pill .hl {
  color: var(--amber-soft);
  font-weight: 700;
}

/* Centered Hero Sections (Legal & Informational Pages) */
.hero-section.hero-section-centered,
.hero-section.text-center {
  text-align: center;
}

.hero-section.hero-section-centered .hero-content,
.hero-section.text-center .hero-content {
  margin: 0 auto;
  text-align: center;
}

.hero-section.hero-section-centered .hero-content h1,
.hero-section.text-center .hero-content h1 {
  text-align: center;
}

.hero-section.hero-section-centered .lede,
.hero-section.text-center .lede {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.hero-section.hero-section-centered .spec-pills,
.hero-section.text-center .spec-pills {
  justify-content: center;
}

/* 404 Error Page Styles */
.hero-404-box {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
  padding: 24px 16px 36px;
}

.stamp {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}

.stamp-error {
  background: rgba(193, 68, 60, 0.2);
  border: 1px solid var(--crimson-soft);
  color: var(--crimson-soft);
}

.hero-title-404 {
  display: inline-block;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  margin: 0 auto 16px;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff 0%, #fef08a 25%, #f59e0b 65%, #d97706 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: #f59e0b;
  filter: drop-shadow(0 2px 14px rgba(245, 158, 11, 0.25));
}

.hero-lede-404 {
  font-size: 1.05rem;
  color: #ffffff;
  max-width: 540px;
  margin: 0 auto 28px;
  line-height: 1.6;
}

.hero-btn-group-404 {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Document Page Header (Legal & Informational Pages without hero) */
.page-doc-header {
  padding: 24px 0 24px;
  text-align: center;
  border-bottom: none;
  position: relative;
}

.page-doc-header::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(240, 194, 103, 0.2) 15%, rgba(240, 194, 103, 0.65) 50%, rgba(240, 194, 103, 0.2) 85%, transparent 100%);
  pointer-events: none;
}

.page-doc-header h1 {
  display: inline-block;
  font-size: clamp(1.75rem, 4vw, 2.3rem);
  font-weight: 800;
  margin: 0 auto 12px;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff 0%, #fef08a 25%, #f59e0b 65%, #d97706 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: #f59e0b;
  filter: drop-shadow(0 2px 14px rgba(245, 158, 11, 0.25));
}

.page-doc-header .lede {
  color: #ffffff;
  font-size: 1.02rem;
  line-height: 1.65;
  max-width: 65ch;
  margin: 0 auto 14px;
}

.page-doc-header .doc-meta {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--amber-soft);
  letter-spacing: 0.05em;
  background: var(--navy-deep);
  border: 1px solid var(--line-strong);
  display: inline-block;
  padding: 5px 12px;
  border-radius: var(--radius-sm);
}

/* Gauge Visual Card */
.hero-gauge-card {
  background: var(--navy-deep);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  text-align: center;
  position: relative;
  overflow: hidden;
  max-width: 420px;
  margin: 0 auto;
  width: 100%;
}

.hero-gauge-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--crimson), var(--amber), var(--emerald-soft));
}

.gauge-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  font-size: 0.75rem;
  color: #ffffff;
  letter-spacing: 0.06em;
}

.gauge-svg-wrap {
  width: 100%;
  max-width: 280px;
  margin: 0 auto;
}

.gauge-svg-wrap svg {
  width: 100%;
  height: auto;
  display: block;
}

.gauge-readout {
  margin-top: -12px;
}

.gauge-readout .score-val {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--amber-soft);
  letter-spacing: -0.02em;
}

.gauge-readout .score-sub {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #ffffff;
  letter-spacing: 0.08em;
  margin-top: 2px;
}

/* ==========================================================================
   CALCULATOR CONTAINER & CARD SYSTEM
   Clean table-like interface across PC, Tablet & Mobile!
   ========================================================================== */
.calc-section {
  padding: 28px 0 48px;
  width: 100%;
  border-bottom: none;
  position: relative;
}

.calc-section::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(240, 194, 103, 0.2) 15%, rgba(240, 194, 103, 0.65) 50%, rgba(240, 194, 103, 0.2) 85%, transparent 100%);
  pointer-events: none;
}

@media (min-width: 768px) {
  .calc-section {
    padding: 40px 0 60px;
  }
}

.calc-card {
  background: var(--navy-panel);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  padding: 16px 14px;
  box-shadow: 0 8px 24px rgba(4, 11, 20, 0.4);
  width: 100%;
}

@media (min-width: 600px) {
  .calc-card {
    padding: 24px 22px;
  }
}

.calc-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 16px;
  margin-bottom: 18px;
}

.calc-card-header.calc-header-centered {
  justify-content: center;
  text-align: center;
}

.calc-title-group {
  flex: 1 1 240px;
}

.calc-title-group.text-center {
  text-align: center;
  margin: 0 auto;
}

.calc-title-group h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin: 0 0 4px;
  color: #ffffff;
}

.calc-subtitle {
  font-size: 0.84rem;
  color: #ffffff;
  margin: 0;
  line-height: 1.45;
}



/* ==========================================================================
   UNIFORM TABLE-LIKE DESIGN ACROSS ALL DEVICES (MOBILE, TABLET & PC)
   ========================================================================== */
.course-table-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.course-table {
  width: 100%;
  border-collapse: collapse;
  display: table;
  min-width: 100%;
}

.course-table thead {
  display: table-header-group;
}

.course-table thead th {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: #ffffff;
  font-weight: 700;
  text-align: left;
  padding: 10px 10px;
  border-bottom: 1px solid var(--line-strong);
  background: var(--navy-deep);
  white-space: nowrap;
}

@media (min-width: 600px) {
  .course-table thead th {
    padding: 12px 14px;
    font-size: 0.78rem;
  }
}

.course-table tbody {
  display: table-row-group;
}

.course-table tr.course-row {
  display: table-row;
  border-bottom: 1px solid var(--line-soft);
}

.course-table tr.course-row:last-child {
  border-bottom: none;
}

.course-table td {
  display: table-cell;
  padding: 8px 8px;
  vertical-align: middle;
}

@media (min-width: 600px) {
  .course-table td {
    padding: 10px 14px;
  }
}

.course-table td.actions-cell {
  text-align: center;
  white-space: nowrap;
}

.action-buttons-group {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Form Controls */
.input-text, .input-select, .input-number {
  background: var(--navy);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  color: #ffffff;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  padding: 8px 10px;
  width: 100%;
  transition: border-color var(--transition-fast), outline var(--transition-fast);
}

.input-number, .input-select {
  font-family: var(--font-mono);
}

.input-number {
  min-width: 70px;
}

.input-select {
  min-width: 90px;
  cursor: pointer;
}

.input-text:focus-visible, .input-select:focus-visible, .input-number:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 1px;
  border-color: var(--amber);
}

.input-select option {
  background: var(--navy-deep);
  color: #ffffff;
}

/* Button System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  text-align: center;
  min-height: 40px;
  touch-action: manipulation;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--amber);
  color: var(--navy-deep);
}

.btn-primary:hover {
  background: var(--amber-soft);
  color: var(--navy-deep);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--chalk);
  outline-offset: 2px;
}

.btn-secondary {
  background: var(--navy-deep);
  border: 1px solid var(--line-strong);
  color: #ffffff;
}

.btn-secondary:hover {
  border-color: var(--amber);
  color: var(--amber-soft);
}

.btn-secondary:focus-visible {
  outline: 2px solid var(--chalk);
  outline-offset: 2px;
}

.btn-sm {
  padding: 6px 10px;
  font-size: 0.78rem;
  min-height: 34px;
}

/* Row Action Buttons ("+" and "-") */
.btn-row-add, .btn-row-remove {
  background: var(--navy);
  border: 1px solid var(--line-strong);
  color: #ffffff;
  width: 36px;
  height: 36px;
  min-width: 36px;
  min-height: 36px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  padding: 0;
  touch-action: manipulation;
}

.btn-row-add:hover {
  background: rgba(91, 138, 109, 0.25);
  border-color: var(--emerald-soft);
  color: var(--emerald-soft);
}

.btn-row-remove:hover {
  background: rgba(193, 68, 60, 0.25);
  border-color: var(--crimson-soft);
  color: var(--crimson-soft);
}

.btn-row-add:focus-visible, .btn-row-remove:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

/* Footer / Below Row Semester Controls */
.semester-footer-controls {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  padding: 10px 14px;
  background: var(--navy-deep);
  border-top: 1px solid var(--line-strong);
  gap: 10px;
}

.btn-add-semester-below {
  background: var(--navy-panel);
  border: 1px dashed var(--amber);
  color: var(--amber-soft);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-add-semester-below:hover {
  background: var(--amber);
  color: var(--navy-deep);
  border-style: solid;
}

.btn-add-semester-below:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.calc-submit-bar {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
  width: 100%;
}

.calc-submit-bar.calc-submit-centered {
  justify-content: center;
  text-align: center;
}

.btn-calc-main {
  min-width: 240px;
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

@media (max-width: 580px) {
  .calc-submit-bar {
    flex-direction: column-reverse;
  }
  .calc-submit-bar.calc-submit-centered {
    justify-content: center;
  }
  .calc-submit-bar .btn,
  .btn-calc-main {
    width: 100%;
    max-width: 340px;
  }
}

/* ==========================================================================
   RESULTS CARD / SUMMARY PANEL
   ========================================================================== */
.results-card {
  margin-top: 28px;
  background: var(--navy-deep);
  border: 1.5px solid var(--amber);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  animation: fadeIn 0.3s ease-out;
  width: 100%;
}

@media (min-width: 600px) {
  .results-card {
    padding: 28px;
  }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .results-card {
    animation: none;
  }
}

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 12px;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 14px;
  margin-bottom: 18px;
  position: relative;
}

.results-header.results-header-centered {
  justify-content: center;
  align-items: center;
  text-align: center;
}

.results-title-group {
  margin: 0 auto;
  text-align: center;
}

.results-title-group .res-k {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: #ffffff;
  font-weight: 700;
  display: block;
  text-align: center;
}

.results-title-group .res-v {
  font-family: var(--font-mono);
  font-size: clamp(2.2rem, 6vw, 3rem);
  font-weight: 800;
  color: var(--amber-soft);
  line-height: 1.1;
  margin-top: 4px;
  display: block;
  text-align: center;
}

.btn-copy-compact {
  position: absolute;
  right: 0;
  top: 0;
  padding: 4px 9px;
  font-size: 0.72rem;
  min-height: 28px;
  font-family: var(--font-mono);
  gap: 4px;
  border-radius: var(--radius-sm);
  background: var(--navy);
  border: 1px solid var(--line-strong);
  color: #ffffff;
}

.btn-copy-compact:hover {
  border-color: var(--amber);
  color: var(--amber-soft);
}

@media (max-width: 480px) {
  .results-header.results-header-centered {
    flex-direction: column;
    align-items: center;
  }
  .btn-copy-compact {
    position: static;
    margin-top: 10px;
  }
}

.results-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 18px;
  justify-content: center;
}

@media (min-width: 480px) {
  .results-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 680px) {
  .results-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.result-stat-box {
  background: var(--navy-panel);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
}

.result-stat-box .stat-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #ffffff;
  letter-spacing: 0.05em;
  display: block;
  text-align: center;
  line-height: 1.4;
}

.result-stat-box .stat-val {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  color: #ffffff;
  margin-top: 6px;
  display: block;
  text-align: center;
}

.results-formula-box {
  background: var(--navy);
  border: 1.5px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: #ffffff;
  word-break: break-word;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 20px auto;
  max-width: 620px;
  width: 100%;
  box-sizing: border-box;
  box-shadow: 0 4px 16px rgba(4, 11, 20, 0.35);
}

.results-formula-box .f-hi {
  color: var(--amber-soft);
  font-weight: 700;
  margin-bottom: 3px;
  display: inline-block;
}

/* Toast message */
.toast-msg {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--emerald);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 16px rgba(0,0,0,0.5);
  z-index: 1000;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.25s ease, transform 0.25s ease;
  pointer-events: none;
}

.toast-msg.show {
  opacity: 1;
  transform: translateY(0);
}

/* Alert boxes */
.alert-error {
  background: rgba(193, 68, 60, 0.2);
  border: 1px solid var(--crimson);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: #ffffff;
  font-size: 0.88rem;
  margin-bottom: 18px;
  word-break: break-word;
}

.alert-error strong {
  color: var(--crimson-soft);
  display: block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  margin-bottom: 4px;
}

.alert-info {
  background: rgba(14, 42, 68, 0.88);
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--amber);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 0.88rem;
  color: #ffffff;
  margin-bottom: 20px;
  line-height: 1.6;
  word-break: break-word;
}

.alert-info strong {
  color: var(--amber-soft);
}

/* ==========================================================================
   OFFICIAL SOURCE CITATION CALLOUT
   ========================================================================== */
.official-source-box {
  background: var(--navy-deep);
  border: 1px solid var(--line-strong);
  border-left: 4px solid var(--amber);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  margin: 28px 0;
  word-break: break-word;
}

.official-source-box .source-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.official-source-box .source-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--amber);
  text-transform: uppercase;
}

.official-source-box p {
  margin: 0;
  font-size: 0.9rem;
  color: #ffffff;
  line-height: 1.65;
}

.official-source-box .source-meta {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: #ffffff;
}

/* ==========================================================================
   EDITORIAL & EDUCATIONAL CONTENT
   ========================================================================== */
.content-section {
  padding: 48px 0;
  border-bottom: none;
  position: relative;
  width: 100%;
}

.content-section::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(240, 194, 103, 0.2) 15%, rgba(240, 194, 103, 0.65) 50%, rgba(240, 194, 103, 0.2) 85%, transparent 100%);
  pointer-events: none;
}

@media (min-width: 768px) {
  .content-section {
    padding: 64px 0;
  }
}

.content-section.content-section-centered {
  text-align: center;
}

.content-section.content-section-centered h2 {
  text-align: center;
  margin: 48px auto 18px;
}

.content-section.content-section-centered h2:first-child {
  margin-top: 0;
}

.content-section.content-section-centered h3 {
  text-align: center;
  margin: 36px auto 14px;
}

.content-section.content-section-centered p {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.content-section.content-section-centered ul,
.content-section.content-section-centered ol {
  display: block;
  text-align: left;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 24px;
  max-width: 680px;
  box-sizing: border-box;
  padding-left: 24px;
}

.content-section.content-section-centered .official-source-box,
.content-section.content-section-centered .source-citation-notice {
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
  text-align: left;
}

.source-citation-notice {
  background: var(--navy-deep);
  border-left: 3px solid var(--amber);
  border-top: 1px solid var(--line-strong);
  border-right: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: #eaeff3;
  margin: 32px auto 28px;
  max-width: 680px;
  line-height: 1.6;
  box-shadow: 0 4px 16px rgba(4, 11, 20, 0.35);
}

.content-section.content-section-centered .results-formula-box {
  max-width: 580px;
  margin-left: auto;
  margin-right: auto;
}

.content-section.content-section-centered .alert-info {
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.content-section.content-section-centered table.gradetable {
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.content-section.content-section-centered .related-grid {
  text-align: center;
}

.content-section.content-section-centered .faq-list {
  max-width: 560px;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  margin-top: 16px;
  margin-bottom: 32px;
  text-align: left;
}

.content-section h2 {
  font-size: clamp(1.4rem, 3.2vw, 1.95rem);
  font-weight: 700;
  color: #ffffff;
  margin: 36px 0 16px;
  letter-spacing: -0.01em;
}

.content-section h2:first-child {
  margin-top: 0;
}

.content-section h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--amber-soft);
  margin: 30px 0 12px;
}

.content-section p {
  font-size: 0.96rem;
  color: #ffffff;
  line-height: 1.75;
  margin: 0 0 20px;
  max-width: 72ch;
}

.content-section ul, .content-section ol {
  color: #ffffff;
  padding-left: 20px;
  margin: 0 0 18px;
}

.content-section li {
  margin-bottom: 8px;
  font-size: 0.95rem;
  line-height: 1.65;
}

/* Grade Spec Table & Conversion Tables */
.gradetable-wrap {
  max-width: 620px;
  width: 100%;
  margin: 24px auto 32px;
  overflow-x: auto;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--navy-deep);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  box-sizing: border-box;
}

table.gradetable {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  background: var(--navy-deep);
  margin: 0 auto;
  display: table;
  text-align: center;
}

table.gradetable th,
table.gradetable td {
  padding: 12px 16px;
  text-align: center;
  border-bottom: 1px solid var(--line-soft);
  color: #ffffff;
  vertical-align: middle;
}

table.gradetable th {
  color: #ffffff;
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  border-bottom: 1px solid var(--line-strong);
  background: var(--navy-panel);
  text-align: center;
}

/* Equal 50/50 Column Distribution for 2-Column Conversion Tables */
table.gradetable tr th:first-child:nth-last-child(2),
table.gradetable tr th:first-child:nth-last-child(2) ~ th {
  width: 50%;
  text-align: center;
}

table.gradetable td.grade {
  color: var(--amber-soft);
  font-weight: 700;
}

table.gradetable tr:last-child td {
  border-bottom: none;
}

/* FAQ Accordion (Short, Compact Centered Question Rows) */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 16px auto 32px !important;
  max-width: 560px;
  width: 100%;
  box-sizing: border-box;
}

.faq-item {
  background: var(--navy-deep);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.faq-item:hover,
.faq-item.open {
  border-color: var(--amber);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  padding: 12px 16px;
  color: #ffffff;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  transition: color var(--transition-fast), background var(--transition-fast);
  touch-action: manipulation;
}

.faq-question:hover {
  color: var(--amber-soft);
  background: rgba(255, 255, 255, 0.02);
}

.faq-question:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: -2px;
}

.faq-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(232, 163, 61, 0.12);
  border: 1px solid rgba(232, 163, 61, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  stroke: var(--amber);
  padding: 3px;
  box-sizing: border-box;
  transition: transform var(--transition-fast), background var(--transition-fast), stroke var(--transition-fast);
}

.faq-question:hover .faq-icon {
  background: rgba(232, 163, 61, 0.25);
  border-color: var(--amber);
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
  background: var(--amber);
  stroke: var(--navy-deep);
}

.faq-answer {
  display: none;
  padding: 12px 16px 14px;
  color: #eaeff3;
  font-size: 0.88rem;
  line-height: 1.65;
  border-top: 1px solid var(--line-soft);
  text-align: left;
  background: rgba(9, 22, 38, 0.5);
}

.faq-item.open .faq-answer {
  display: block;
}

@media (max-width: 680px) {
  .faq-list {
    max-width: 100%;
    margin: 14px auto 24px !important;
    gap: 8px;
  }
  .faq-question {
    padding: 10px 14px;
    font-size: 0.88rem;
    gap: 10px;
  }
  .faq-icon {
    width: 20px;
    height: 20px;
    padding: 2px;
  }
  .faq-answer {
    padding: 10px 14px 12px;
    font-size: 0.85rem;
  }
  .content-section.content-section-centered h2 {
    margin: 32px auto 14px;
    font-size: 1.38rem;
  }
  .content-section.content-section-centered ul,
  .content-section.content-section-centered ol {
    padding-left: 20px;
    padding-right: 8px;
    font-size: 0.90rem;
    margin-bottom: 20px;
  }
}

/* ==========================================================================
   RELATED CALCULATOR CARDS
   ========================================================================== */
.related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 20px;
  width: 100%;
}

@media (min-width: 580px) {
  .related-grid {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 18px;
  }
}

.directory-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 24px;
  width: 100%;
}

@media (min-width: 640px) {
  .directory-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
  }
}

.related-card {
  background: var(--navy-deep);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 22px 18px 20px;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  text-align: center;
  text-decoration: none;
  box-sizing: border-box;
}

.related-card:hover {
  transform: translateY(-2px);
  border-color: var(--amber);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.related-card div {
  width: 100%;
  text-align: center;
}

.related-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  margin: 0 0 8px;
  text-align: center;
}

.related-card p {
  font-size: 0.86rem;
  color: #ffffff;
  margin: 0 auto 16px;
  line-height: 1.55;
  text-align: center;
  max-width: 100%;
}

.related-card .arrow-link {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--amber);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  align-self: center;
  margin: auto auto 0;
  text-align: center;
  padding: 6px 16px;
  background: rgba(217, 119, 6, 0.08);
  border: 1px solid rgba(217, 119, 6, 0.25);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.related-card:hover .arrow-link {
  color: #ffffff;
  background: var(--amber);
  border-color: var(--amber);
}

/* ==========================================================================
   FOOTER SYSTEM
   ========================================================================== */
.site-footer {
  border-top: none;
  background: var(--navy-deep);
  padding: 32px 0 40px;
  margin-top: auto;
  width: 100%;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 32px;
  width: 100%;
}

@media (min-width: 540px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .brand-col {
    grid-column: span 2;
  }
}

@media (min-width: 860px) {
  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 32px;
  }
  .brand-col {
    grid-column: span 1;
  }
}

.footer-col-title {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--amber);
  margin-bottom: 12px;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 8px;
  font-size: 0.88rem;
  color: #ffffff;
}

.footer-links a {
  color: #ffffff;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--amber-soft);
  text-decoration: underline;
}

.footer-links.campus-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  border-bottom: 1px solid var(--line-soft);
  padding-bottom: 4px;
}

.footer-links.campus-list a {
  color: #ffffff;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links.campus-list a:hover {
  color: var(--amber-soft);
  text-decoration: underline;
}

.footer-links.campus-list .loc-code {
  color: #ffffff;
  opacity: 0.75;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
}

.status-dot {
  width: 7px;
  height: 7px;
  background: var(--emerald-soft);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--emerald-soft);
}

.status-text {
  font-size: 0.75rem;
  color: #ffffff;
  letter-spacing: 0.05em;
}

.footer-bottom {
  border-top: 1px solid var(--line-strong);
  padding-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.disclaimer-note {
  font-size: 0.78rem;
  color: #ffffff;
  line-height: 1.6;
  margin: 0;
}

.disclaimer-note a {
  color: var(--amber-soft);
  text-decoration: underline;
}

.footer-copyright {
  font-size: 0.78rem;
  color: #ffffff;
  opacity: 0.8;
}

/* ==========================================
   AI & E-E-A-T ENHANCEMENTS: Badges & Breadcrumbs
   Mobile-First Regulation Status Badge
   ========================================== */
.regulation-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 14px;
  background: rgba(9, 22, 38, 0.95);
  border: 1px solid var(--line-strong);
  border-left: 3px solid #86efac;
  border-radius: var(--radius-md);
  padding: 10px 18px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--chalk);
  margin: 0 auto 28px;
  max-width: 100%;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
  box-sizing: border-box;
  text-align: left;
}

.content-section.content-section-centered .regulation-badge {
  margin-left: auto;
  margin-right: auto;
}

.regulation-badge .badge-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-align: left;
  white-space: nowrap;
}

.regulation-badge .badge-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.regulation-badge .badge-dot {
  width: 7px;
  height: 7px;
  background: #86efac;
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(134, 239, 172, 0.85);
  display: inline-block;
  flex-shrink: 0;
  animation: pulse-badge-dot 2.5s infinite ease-in-out;
}

@keyframes pulse-badge-dot {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
    box-shadow: 0 0 8px rgba(134, 239, 172, 0.85);
  }
  50% {
    opacity: 0.65;
    transform: scale(0.9);
    box-shadow: 0 0 3px rgba(134, 239, 172, 0.4);
  }
}

.regulation-badge .badge-active {
  color: #86efac;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.regulation-badge .badge-label {
  color: #94a3b8;
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  font-weight: 500;
}

.regulation-badge .badge-val {
  color: #f1f5f9;
  font-weight: 600;
}

.regulation-badge .badge-code {
  color: #e2e8f0;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  font-size: 0.74rem;
  letter-spacing: 0.03em;
}

.regulation-badge .badge-sep {
  color: var(--line-strong);
  opacity: 0.6;
  user-select: none;
}

/* Mobile-First Responsive Layout (< 640px) */
@media (max-width: 640px) {
  .regulation-badge {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    text-align: left;
    width: 100%;
    max-width: 480px;
    margin: 0 auto 22px auto;
    padding: 12px 14px;
    gap: 7px;
    font-size: 0.74rem;
    line-height: 1.45;
  }

  /* Completely eliminate orphaned dangling separators on mobile */
  .regulation-badge .badge-sep {
    display: none !important;
  }

  .regulation-badge .badge-item {
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 4px 6px;
    width: 100%;
    text-align: left;
    white-space: normal;
  }

  .regulation-badge .badge-status {
    width: 100%;
    padding-bottom: 2px;
  }

  .regulation-badge .badge-ref {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 4px 6px;
  }

  .regulation-badge .badge-code {
    display: inline-block;
    word-break: break-all;
    max-width: 100%;
  }
}

@media (max-width: 380px) {
  .regulation-badge {
    padding: 10px 12px;
    font-size: 0.71rem;
    gap: 6px;
  }

  .regulation-badge .badge-label {
    font-size: 0.70rem;
  }

  .regulation-badge .badge-code {
    font-size: 0.70rem;
    padding: 2px 5px;
  }
}

/* Breadcrumb Navigation Trail */
.breadcrumb-trail {
  padding: 14px 16px 14px;
  border-bottom: none;
  position: relative;
  width: 100%;
  box-sizing: border-box;
}

.breadcrumb-trail::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(240, 194, 103, 0.15) 20%, rgba(240, 194, 103, 0.5) 50%, rgba(240, 194, 103, 0.15) 80%, transparent 100%);
  pointer-events: none;
}

@media (min-width: 600px) {
  .breadcrumb-trail {
    padding: 16px 24px 16px;
  }
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 6px 10px;
  list-style: none;
  padding: 0;
  margin: 0 auto;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.6;
  text-align: center;
}

.breadcrumb-item {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
}

.breadcrumb-item a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.15s ease;
}

.breadcrumb-item a:hover {
  color: var(--amber);
  text-decoration: underline;
}

.breadcrumb-item.active {
  color: #ffffff;
  font-weight: 600;
}

.breadcrumb-sep {
  color: var(--text-dim);
  opacity: 0.5;
  user-select: none;
  font-size: 0.75rem;
}

/* Direct Contact Info Card */
.direct-contact-card {
  background: var(--bg-panel);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.direct-contact-card .contact-meta-row {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  color: var(--chalk);
}

.direct-contact-card .contact-meta-row svg {
  color: var(--amber);
  flex-shrink: 0;
}

.direct-contact-card .contact-meta-row a {
  color: var(--amber-soft);
  text-decoration: underline;
  font-weight: 600;
}

/* ==========================================================================
   GLOBAL MOBILE-FIRST RESPONSIVENESS ENHANCEMENTS (<= 480px and <= 360px)
   Eliminates horizontal overflow, optimizes touch targets & compacts tables
   ========================================================================== */
@media (max-width: 480px) {
  .course-table thead th {
    padding: 8px 6px;
    font-size: 0.72rem;
  }
  .course-table td {
    padding: 6px 4px;
  }
  .input-number {
    min-width: 60px;
    padding: 7px 6px;
    font-size: 0.82rem;
  }
  .input-select {
    min-width: 80px;
    padding: 7px 6px;
    font-size: 0.82rem;
  }
  .btn-row-add, .btn-row-remove {
    width: 32px;
    height: 32px;
    min-width: 32px;
    min-height: 32px;
    font-size: 0.95rem;
  }
  .action-buttons-group {
    gap: 4px;
  }
  table.gradetable th,
  table.gradetable td {
    padding: 8px 6px;
    font-size: 0.78rem;
  }
  .results-formula-box {
    padding: 12px 14px;
    font-size: 0.82rem;
  }
  .direct-contact-card {
    padding: 16px 14px;
    word-break: break-word;
  }
  .footer-links.campus-list li {
    gap: 8px;
    font-size: 0.80rem;
  }
  .hero-content .lede,
  .page-doc-header .lede {
    font-size: 0.92rem;
    line-height: 1.6;
  }
}

@media (max-width: 360px) {
  .wrap {
    padding: 0 12px;
  }
  .brand-title {
    font-size: 1.05rem;
  }
  .btn-calc-main {
    padding: 10px 16px;
    font-size: 0.88rem;
    min-width: unset;
    width: 100%;
  }
  .calc-card {
    padding: 14px 10px;
  }
}

/* ==========================================================================
   CALCULATOR FEATURE INFOGRAPHIC BANNERS & DIRECTORY CARDS
   Mobile-First, Retina-Crisp, Fluid 16:9 Aspect Ratio
   ========================================================================== */
.calc-guide-figure {
  margin: 0 auto 36px;
  max-width: 780px;
  width: 100%;
  box-sizing: border-box;
  text-align: center;
}

.calc-guide-img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  display: block;
  border-radius: var(--radius-md);
  border: 1px solid var(--line-strong);
  box-shadow: 0 8px 32px rgba(4, 11, 20, 0.45);
  background: var(--navy-deep);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  object-fit: cover;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

.calc-guide-img:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.55);
}

.directory-card-img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  display: block;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  border: 1px solid var(--line-soft);
  box-shadow: 0 4px 16px rgba(4, 11, 20, 0.35);
  background: var(--navy-deep);
  object-fit: cover;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

@media (max-width: 640px) {
  .calc-guide-figure {
    margin-bottom: 24px;
    padding: 0 2px;
  }
  .calc-guide-img {
    border-radius: var(--radius-sm);
  }
}