/* ==========================================================================
   Antigravity Design System - Online University Course Finder & EMI Calculator
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@500;600;700;800&display=swap');

:root {
  /* Color Palette - Dark Theme (Default) */
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-card-hover: rgba(31, 41, 55, 0.85);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);

  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;

  --accent-primary: #4f46e5;
  --accent-secondary: #06b6d4;
  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
  --accent-gradient-hover: linear-gradient(135deg, #4f46e5 0%, #9333ea 50%, #db2777 100%);
  
  --emerald-gradient: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --amber-gradient: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  --blue-gradient: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);

  --badge-bg: rgba(99, 102, 241, 0.15);
  --badge-border: rgba(99, 102, 241, 0.3);
  --badge-text: #818cf8;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(241, 245, 249, 0.95);
  --glass-border: rgba(0, 0, 0, 0.08);
  --glass-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;

  --badge-bg: rgba(79, 70, 229, 0.1);
  --badge-border: rgba(79, 70, 229, 0.25);
  --badge-text: #4338ca;
}

/* Reset & Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  line-height: 1.25;
}

/* App Container Layout */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 15, 25, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
  padding: 1rem 2rem;
}

[data-theme="light"] .app-header {
  background: rgba(248, 250, 252, 0.85);
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 800;
  font-size: 1.4rem;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.brand-text h1 {
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.brand-text span {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-tagline {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn-theme-toggle {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.btn-theme-toggle:hover {
  transform: scale(1.05);
  border-color: var(--accent-primary);
}

/* Main Container */
.main-wrapper {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem 1.5rem 5rem 1.5rem;
}

/* Hero Section */
.hero-banner {
  text-align: center;
  padding: 2.5rem 1.5rem 2rem 1.5rem;
  margin-bottom: 2.5rem;
  background: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.18) 0%, rgba(11, 15, 25, 0) 70%);
  border-radius: var(--radius-xl);
}

.hero-title {
  font-size: 2.5rem;
  margin-bottom: 0.8rem;
  letter-spacing: -0.03em;
}

.hero-title span {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 750px;
  margin: 0 auto 2rem auto;
}

/* TOP FILTER DROPDOWNS CONTROL PANEL TAB */
.top-filter-control-panel {
  background: var(--bg-card);
  border: 2px solid rgba(99, 102, 241, 0.35);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  margin: 0 auto 2rem auto;
  max-width: 1100px;
  text-align: left;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(16px);
}

.top-filter-panel-header {
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--glass-border);
}

.top-filter-panel-header h3 {
  font-size: 1.15rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.top-filter-panel-header h3 svg {
  color: var(--accent-primary);
}

.filter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.filter-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-input, .form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
  transition: var(--transition-fast);
}

.form-input:focus, .form-select:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.counselor-bar {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.counselor-toggle {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  user-select: none;
}

.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  transition: .3s;
  border-radius: 24px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background-color: var(--text-secondary);
  transition: .3s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--accent-primary);
}

input:checked + .slider:before {
  transform: translateX(20px);
  background-color: #ffffff;
}

.counselor-toggle-text {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-primary);
}

.hero-stats-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-top: 1rem;
}

.stat-pill {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  padding: 0.6rem 1.25rem;
  border-radius: 50px;
  font-size: 0.88rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  backdrop-filter: blur(10px);
}

.stat-pill svg {
  color: #6366f1;
}

/* University Selector Bar */
.section-title {
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.section-title svg {
  color: var(--accent-primary);
}

.uni-scroll-wrapper {
  margin-bottom: 2.5rem;
}

.uni-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.uni-card-item {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 1rem;
  cursor: pointer;
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.uni-card-item:hover, .uni-card-item.active {
  background: var(--bg-card-hover);
  border-color: #6366f1;
  transform: translateY(-4px);
  box-shadow: 0 12px 24px -10px rgba(99, 102, 241, 0.3);
}

.uni-card-item.active::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--accent-gradient);
}

.uni-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.uni-badge-naac {
  align-self: flex-start;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.uni-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.uni-courses-count {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

/* Course Cards Grid Layout */
.courses-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.courses-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.course-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.course-card:hover {
  transform: translateY(-5px);
  border-color: rgba(99, 102, 241, 0.4);
  box-shadow: var(--glass-shadow);
}

.course-card-top {
  margin-bottom: 1rem;
}

.course-uni-tag {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.uni-name-badge {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--badge-text);
  background: var(--badge-bg);
  border: 1px solid var(--badge-border);
  padding: 0.25rem 0.6rem;
  border-radius: 20px;
}

.duration-badge {
  font-size: 0.75rem;
  font-weight: 600;
  color: #f59e0b;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.3);
  padding: 0.25rem 0.6rem;
  border-radius: 20px;
}

.course-card-title {
  font-size: 1.15rem;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.fee-highlight-box {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 1.25rem;
}

[data-theme="light"] .fee-highlight-box {
  background: rgba(241, 245, 249, 0.8);
}

.fee-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.4rem;
}

.fee-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.fee-val-total {
  font-size: 1.3rem;
  font-weight: 800;
  color: #10b981;
}

.emi-quick-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--glass-border);
}

.emi-item {
  text-align: center;
}

.emi-months-label {
  font-size: 0.68rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.emi-price {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
}

.course-actions {
  display: flex;
  gap: 0.75rem;
}

.btn-details {
  flex: 1;
  background: var(--accent-gradient);
  color: #ffffff;
  border: none;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: var(--transition-fast);
}

.btn-details:hover {
  background: var(--accent-gradient-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.btn-compare-add {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-compare-add:hover, .btn-compare-add.active {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

/* BOTTOM SEARCH SECTION AT BOTTOM OF PAGE */
.bottom-search-section {
  margin-top: 2rem;
  margin-bottom: 2rem;
}

.bottom-search-card {
  background: var(--bg-card);
  border: 2px solid rgba(99, 102, 241, 0.35);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(12px);
}

.bottom-search-title {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text-primary);
}

.bottom-search-title svg {
  color: #6366f1;
}

.bottom-search-inner {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 0.5rem 1.25rem;
}

.bottom-search-input {
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 1rem;
  font-family: inherit;
  padding: 0.5rem 0;
}

.btn-clear-bottom {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.4rem;
  cursor: pointer;
  padding: 0.2rem 0.5rem;
  display: none;
}

.btn-clear-bottom.visible {
  display: block;
}

/* Point-by-Point Detailed Modal */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(10px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  padding: 1.5rem;
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-content-container {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 900px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
}

.modal-header-bar {
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  position: sticky;
  top: 0;
  background: var(--bg-secondary);
  z-index: 10;
}

.modal-title-area h2 {
  font-size: 1.4rem;
  margin-bottom: 0.4rem;
}

.modal-title-area p {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.btn-modal-close {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: 8px;
  transition: var(--transition-fast);
}

.btn-modal-close:hover {
  background: var(--glass-border);
  color: var(--text-primary);
}

.modal-body-content {
  padding: 2rem;
}

/* Point-by-Point Manner Cards (1st to Last) */
.point-manner-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.point-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  position: relative;
  border-left: 4px solid var(--accent-primary);
}

.point-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.point-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-gradient);
  color: #ffffff;
  font-weight: 800;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.point-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* Point 1: Direct Official Link */
.official-link-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.link-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.link-info-text h4 {
  font-size: 0.95rem;
}

.link-info-text p {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.btn-official-direct {
  background: var(--emerald-gradient);
  color: #ffffff;
  font-weight: 700;
  text-decoration: none;
  padding: 0.8rem 1.4rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
  transition: var(--transition-fast);
}

.btn-official-direct:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
}

/* Point 2: Fee Table & Breakdown */
.fee-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.5rem;
}

.fee-table th, .fee-table td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--glass-border);
  font-size: 0.9rem;
}

.fee-table th {
  background: rgba(0, 0, 0, 0.2);
  color: var(--text-secondary);
  font-weight: 600;
}

/* Point 3: Registration Fee */
.reg-fee-callout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
}

.reg-fee-amount {
  font-size: 1.4rem;
  font-weight: 800;
  color: #f59e0b;
}

/* Point 4: EMI Options Table */
.emi-grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.emi-card-box {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  text-align: center;
  transition: var(--transition-fast);
}

.emi-card-box.highlight {
  border-color: var(--accent-primary);
  background: rgba(99, 102, 241, 0.08);
}

.emi-card-tenure {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.emi-card-monthly {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
}

/* Down Payment Counselor Slider */
.counselor-calc-tool {
  margin-top: 1.25rem;
  background: rgba(0, 0, 0, 0.2);
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px dashed var(--glass-border);
}

.counselor-slider-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  font-size: 0.85rem;
}

.range-input {
  width: 100%;
  accent-color: var(--accent-primary);
}

/* Point 5: Key Features & Placement Details */
.features-tags-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.feature-tag-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.feature-tag-item svg {
  color: #10b981;
  flex-shrink: 0;
  margin-top: 2px;
}

/* Floating Comparison Drawer Bar */
.comparison-floating-bar {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(150%);
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  padding: 0.75rem 1.5rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: 1.5rem;
  z-index: 500;
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.comparison-floating-bar.active {
  transform: translateX(-50%) translateY(0);
}

.btn-compare-launch {
  background: var(--accent-gradient);
  color: #ffffff;
  border: none;
  padding: 0.6rem 1.2rem;
  border-radius: 30px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Footer */
.app-footer {
  text-align: center;
  padding: 2.5rem;
  border-top: 1px solid var(--glass-border);
  color: var(--text-muted);
  font-size: 0.85rem;
}