/* ==========================================================================
   COURSES PAGE - GYANVERSE INSTITUTE OF TECHNOLOGY
   Modern, High-Information Course Catalog, Filters, and Syllabus Modal
   ========================================================================== */

:root {
  --gv-navy: #002060;
  --gv-navy-dark: #07173b;
  --gv-navy-light: #0d3b7d;
  --gv-saffron: #ff9933;
  --gv-saffron-dark: #e67300;
  --gv-green: #138808;
  --gv-slate-900: #0f172a;
  --gv-slate-700: #334155;
  --gv-slate-600: #475569;
  --gv-slate-500: #64748b;
  --gv-slate-100: #f1f5f9;
  --gv-slate-50: #f8fafc;
  --gv-card-border: rgba(0, 32, 96, 0.08);
  --gv-shadow-sm: 0 2px 8px rgba(0, 32, 96, 0.04);
  --gv-shadow-md: 0 8px 24px rgba(0, 32, 96, 0.08);
  --gv-shadow-lg: 0 16px 40px rgba(0, 32, 96, 0.12);
  --gv-radius-md: 14px;
  --gv-radius-lg: 18px;
}

body {
  overflow-x: hidden;
  color: var(--gv-slate-700);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ==========================================================================
   ZERO OPACITY POLICY - COURSES PAGE
   Guarantees 100% sharp, solid visibility with no opacity delays or fades
   ========================================================================== */
body,
main,
section,
header,
footer,
div,
article,
aside,
span,
p,
a,
button,
input,
img,
h1, h2, h3, h4, h5, h6,
.courses-hero,
.courses-hero *,
.courses-filter-section,
.courses-filter-section *,
.courses-catalog-section,
.courses-catalog-section *,
.category-block,
.category-block *,
.category-header-modern,
.category-body,
.courses-grid,
.course-card-modern,
.course-card-modern *,
.filter-card,
.filter-card *,
.courses-franchise-banner,
.courses-franchise-banner *,
.js-reveal {
  opacity: 1 !important;
  filter: none !important;
}

/* ========================================
   1. HERO SECTION (LIGHT, SOLID & APPEALING)
   ======================================== */
.courses-hero {
  background: #f8fafd;
  background: linear-gradient(180deg, #f8fafd 0%, #eef4fb 100%);
  color: var(--gv-slate-700);
  padding: clamp(3rem, 5.5vw, 4.5rem) 1.5rem 3.5rem;
  position: relative;
  text-align: center;
  border-bottom: 1px solid #dce4ee;
  opacity: 1 !important;
}

.courses-hero__inner {
  position: relative;
  z-index: 2;
  max-width: 860px;
  margin: 0 auto;
}

.courses-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: #fff7ed;
  color: #c2410c;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.35rem 0.95rem;
  border-radius: 999px;
  margin-bottom: 1rem;
  border: 1px solid #fed7aa;
}

.courses-hero__title {
  font-size: clamp(2rem, 4vw, 2.85rem);
  font-weight: 800;
  color: var(--gv-navy);
  line-height: 1.25;
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.courses-hero__title-accent {
  color: var(--gv-saffron-dark);
}

.courses-hero__lead {
  font-size: 1.1rem;
  line-height: 1.65;
  color: var(--gv-slate-600);
  margin: 0 auto 1.75rem;
  max-width: 720px;
}

.courses-hero__pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

.courses-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: #ffffff;
  border: 1px solid #dce4ee;
  padding: 0.4rem 0.95rem;
  border-radius: 999px;
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--gv-navy);
  box-shadow: 0 2px 6px rgba(0, 32, 96, 0.04);
}

.courses-pill i {
  color: var(--gv-saffron-dark);
}

/* ========================================
   2. SEARCH & DUAL FILTER SECTION
   ======================================== */
.courses-filter-section {
  margin-top: -2rem;
  position: relative;
  z-index: 3;
}

.filter-card {
  background: #ffffff;
  border-radius: var(--gv-radius-md);
  border: 1px solid #e2e8f0;
  box-shadow: 0 8px 30px rgba(0, 32, 96, 0.08);
  padding: 1.35rem 1.65rem;
}

.search-input-wrap {
  position: relative;
}

.search-input-wrap i.search-icon {
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gv-slate-500);
  font-size: 1.1rem;
}

.search-input-wrap input {
  padding-left: 2.85rem;
  padding-right: 2.5rem;
  height: 50px;
  border-radius: 10px;
  border: 1.5px solid #dce4ee;
  font-size: 0.975rem;
  transition: all 0.2s ease;
  background: #f8fafc;
}

.search-input-wrap input:focus {
  background: #ffffff;
  border-color: var(--gv-navy);
  box-shadow: 0 0 0 4px rgba(0, 32, 96, 0.08);
  outline: none;
}

.search-input-wrap button.clear-search-btn {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  color: var(--gv-slate-500);
  cursor: pointer;
  padding: 4px 8px;
  display: none;
}

.search-input-wrap button.clear-search-btn:hover {
  color: #dc2626;
}

/* Filter Controls Rows */
.filter-row-group {
  margin-top: 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.filter-row-label {
  font-size: 0.775rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gv-slate-500);
  margin-right: 0.5rem;
  white-space: nowrap;
}

.category-filter-pills,
.duration-filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.cat-filter-btn,
.dur-filter-btn {
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  color: var(--gv-slate-700);
  font-size: 0.825rem;
  font-weight: 600;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.cat-filter-btn:hover,
.dur-filter-btn:hover {
  background: #e2e8f0;
  color: var(--gv-navy);
}

.cat-filter-btn.active,
.dur-filter-btn.active {
  background: var(--gv-navy);
  color: #ffffff;
  border-color: var(--gv-navy);
  box-shadow: 0 2px 8px rgba(0, 32, 96, 0.25);
}

.dur-filter-btn.active {
  background: var(--gv-saffron-dark);
  border-color: var(--gv-saffron-dark);
  box-shadow: 0 2px 8px rgba(230, 115, 0, 0.3);
}

.filter-meta-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--gv-slate-100);
  font-size: 0.875rem;
  color: var(--gv-slate-600);
}

/* ========================================
   3. COURSES CATALOG CONTAINER & CARDS
   ======================================== */
.courses-catalog-section {
  padding: clamp(2.5rem, 5vw, 4rem) 0;
  background: #f8fafc;
}

.category-block {
  margin-bottom: 2.25rem;
  background: #ffffff;
  border-radius: var(--gv-radius-lg);
  border: 1px solid #e2e8f0;
  box-shadow: 0 4px 16px rgba(0, 32, 96, 0.04);
  overflow: hidden;
  transition: box-shadow 0.3s ease;
}

.category-block:hover {
  box-shadow: 0 8px 24px rgba(0, 32, 96, 0.08);
}

.category-header-modern {
  background: #ffffff;
  color: var(--gv-navy);
  padding: 1.15rem 1.65rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
  border-left: 5px solid var(--gv-navy);
  border-bottom: 1px solid #edf2f7;
  transition: all 0.25s ease;
}

.category-header-modern:hover {
  background: #f8fafc;
  border-left-color: var(--gv-saffron-dark);
}

.category-header-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--gv-navy);
  margin: 0;
}

.category-header-title i.cat-icon {
  color: var(--gv-saffron-dark);
  font-size: 1.35rem;
}

.category-header-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.course-count-badge {
  font-size: 0.775rem;
  font-weight: 700;
  background: #edf2f7;
  color: var(--gv-navy);
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  border: 1px solid #cbd5e1;
}

.toggle-arrow {
  font-size: 0.95rem;
  color: var(--gv-navy);
  transition: transform 0.3s ease;
}

.category-body {
  padding: 1.75rem;
  display: none;
}

.category-body.open {
  display: block;
}

/* Cohesive, Uniform Course Card Grid */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
  gap: 1.35rem;
}

.course-card-modern {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  padding: 1.35rem;
  box-shadow: 0 3px 12px rgba(0, 32, 96, 0.04);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  transition: all 0.25s ease;
  position: relative;
  border-top: 4px solid var(--gv-navy);
}

.course-card-modern:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(0, 32, 96, 0.1);
  border-top-color: var(--gv-saffron);
  border-color: rgba(0, 32, 96, 0.22);
}

/* Card Header Meta */
.course-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.course-badge-group {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.course-code-pill {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--gv-navy);
  background: #edf2f7;
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  font-family: monospace;
  letter-spacing: 0.03em;
  border: 1px solid #dce4ee;
}

.course-level-pill {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  background: #ecfdf5;
  color: #047857;
  border: 1px solid #a7f3d0;
}

.course-duration-meta {
  font-size: 0.75rem;
  font-weight: 700;
  color: #b45309;
  background: #fef3c7;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

/* Card Title */
.course-card-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--gv-navy);
  line-height: 1.35;
  margin-bottom: 0.5rem;
  min-height: 48px;
  display: flex;
  align-items: center;
}

.course-trust-strip {
  font-size: 0.775rem;
  color: #047857;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-bottom: 0.85rem;
}

/* Structured Curriculum Highlights */
.course-modules-block {
  margin-bottom: 1.15rem;
  flex-grow: 1;
}

.modules-block-title {
  font-size: 0.725rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gv-slate-500);
  margin-bottom: 0.45rem;
}

.modules-pill-list {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.module-item-pill {
  font-size: 0.8rem;
  color: var(--gv-slate-700);
  background: #f8fafc;
  padding: 0.3rem 0.6rem;
  border-radius: 6px;
  border: 1px solid #edf2f7;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  line-height: 1.3;
}

.module-item-pill i {
  color: var(--gv-green);
  font-size: 0.725rem;
  flex-shrink: 0;
}

.modules-more-badge {
  font-size: 0.75rem;
  color: var(--gv-saffron-dark);
  font-weight: 700;
  margin-top: 0.35rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

/* Card Footer */
.course-card-footer {
  padding-top: 0.85rem;
  border-top: 1px solid #edf2f7;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

.topics-count-badge {
  font-size: 0.8rem;
  color: var(--gv-slate-500);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.topics-count-badge i {
  color: var(--gv-navy);
}

.course-action-text {
  font-size: 0.825rem;
  font-weight: 700;
  color: var(--gv-navy);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: color 0.2s ease;
}

.course-card-modern:hover .course-action-text {
  color: var(--gv-saffron-dark);
}

/* ========================================
   4. MODAL DIALOG (COURSE SYLLABUS)
   ======================================== */
.modal-overlay-backdrop {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(7, 23, 59, 0.65);
  z-index: 10050;
}

.course-modal-dialog {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 90%;
  max-width: 700px;
  max-height: 85vh;
  background: #ffffff;
  border-radius: var(--gv-radius-lg);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
  z-index: 10051;
  overflow: hidden;
  flex-direction: column;
}

.course-modal-header {
  background: linear-gradient(135deg, #07173b 0%, #002060 100%);
  color: #ffffff;
  padding: 1.35rem 1.75rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.course-modal-header h4 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0 0 0.35rem;
  color: #ffffff;
}

.modal-course-badge-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.modal-close-btn {
  background: rgba(255, 255, 255, 0.15);
  border: none;
  color: #ffffff;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: background 0.2s ease;
  flex-shrink: 0;
}

.modal-close-btn:hover {
  background: #dc2626;
}

.course-modal-body {
  padding: 1.5rem 1.75rem;
  overflow-y: auto;
  max-height: calc(85vh - 140px);
}

.syllabus-heading {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--gv-navy);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.syllabus-heading i {
  color: var(--gv-saffron-dark);
}

.modal-topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0.75rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.modal-topic-item {
  background: #f8fafc;
  border: 1px solid var(--gv-card-border);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  color: var(--gv-slate-700);
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  line-height: 1.45;
}

.modal-topic-item i {
  color: var(--gv-green);
  font-size: 0.85rem;
  margin-top: 0.2rem;
  flex-shrink: 0;
}

.course-modal-footer {
  padding: 1rem 1.75rem;
  border-top: 1px solid var(--gv-slate-100);
  background: #fafbfc;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ========================================
   5. FRANCHISE BANNER CALLOUT (LIGHT)
   ======================================== */
.courses-franchise-banner {
  background: #ffffff;
  background: linear-gradient(135deg, #ffffff 0%, #fffbf5 50%, #f0f4ff 100%);
  color: var(--gv-slate-700);
  border: 2px solid #fed7aa;
  border-radius: var(--gv-radius-lg);
  padding: clamp(2rem, 4vw, 2.75rem);
  margin-top: 3rem;
  box-shadow: 0 10px 30px rgba(0, 32, 96, 0.06);
  position: relative;
  overflow: hidden;
}

/* Responsive */
@media (max-width: 768px) {
  .courses-filter-section {
    margin-top: 1rem;
  }

  .courses-hero {
    padding: 2.5rem 1rem 2.25rem;
  }

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

  .course-modal-dialog {
    width: 95%;
  }

  .modal-topics-grid {
    grid-template-columns: 1fr;
  }
}