/**
 * College2India - Modern Profile & Interactive Component Styles
 * Zero-CLS, Mobile-First, Accessible Component Design
 */

:root {
  --c2i-primary: #2563eb;
  --c2i-primary-dark: #1d4ed8;
  --c2i-primary-light: #eff6ff;
  --c2i-accent: #059669;
  --c2i-warning: #d97706;
  --c2i-danger: #dc2626;
  --c2i-slate-900: #0f172a;
  --c2i-slate-800: #1e293b;
  --c2i-slate-700: #334155;
  --c2i-slate-600: #475569;
  --c2i-slate-500: #64748b;
  --c2i-slate-200: #e2e8f0;
  --c2i-slate-100: #f1f5f9;
  --c2i-slate-50: #f8fafc;
  --c2i-radius-sm: 8px;
  --c2i-radius-md: 12px;
  --c2i-radius-lg: 16px;
  --c2i-shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --c2i-shadow-md: 0 4px 14px rgba(0,0,0,0.05);
  --c2i-shadow-lg: 0 10px 25px -5px rgba(0,0,0,0.08);
  --c2i-transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base resets & smooth scrolling */
html {
  scroll-behavior: smooth;
}

/* Sticky Horizontal Navigation Bar */
.c2i-sticky-tab-wrapper {
  position: -webkit-sticky;
  position: sticky;
  top: 0;
  z-index: 1020;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 10px 0;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--c2i-slate-200);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.04);
  transition: var(--c2i-transition);
}

.c2i-tab-scroll-container {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  white-space: nowrap;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding: 2px 4px;
}

.c2i-tab-scroll-container::-webkit-scrollbar {
  display: none;
}

.c2i-nav-tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--c2i-radius-md);
  font-size: 14px;
  font-weight: 700;
  color: var(--c2i-slate-600);
  text-decoration: none !important;
  background: transparent;
  border: 1px solid transparent;
  transition: var(--c2i-transition);
  cursor: pointer;
  user-select: none;
}

.c2i-nav-tab-btn:hover {
  color: var(--c2i-primary);
  background: var(--c2i-slate-50);
}

.c2i-nav-tab-btn.active {
  background: var(--c2i-primary) !important;
  color: #ffffff !important;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
  border-color: var(--c2i-primary);
}

.c2i-nav-tab-btn .badge-pill {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 20px;
  background: var(--c2i-primary-light);
  color: var(--c2i-primary-dark);
}

.c2i-nav-tab-btn.active .badge-pill {
  background: rgba(255, 255, 255, 0.25);
  color: #ffffff;
}

/* Content Section Containers (Zero CLS) */
.c2i-profile-section {
  scroll-margin-top: 80px;
  margin-bottom: 30px;
  background: #ffffff;
  border: 1px solid var(--c2i-slate-200);
  border-radius: var(--c2i-radius-lg);
  padding: 28px;
  box-shadow: var(--c2i-shadow-md);
}

.c2i-section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--c2i-slate-100);
}

.c2i-section-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--c2i-slate-900);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Cutoff Eligibility Calculator Widget */
.c2i-cutoff-tool-card {
  background: linear-gradient(135deg, #f8fafc 0%, #eff6ff 100%);
  border: 1px solid #bfdbfe;
  border-radius: var(--c2i-radius-md);
  padding: 22px;
  margin-bottom: 24px;
}

.c2i-tool-input-row {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 16px;
  align-items: flex-end;
}

@media (max-width: 768px) {
  .c2i-tool-input-row {
    grid-template-columns: 1fr;
  }
}

.c2i-form-group label {
  font-size: 13px;
  font-weight: 700;
  color: var(--c2i-slate-700);
  margin-bottom: 6px;
  display: block;
}

.c2i-form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid #cbd5e1;
  border-radius: var(--c2i-radius-sm);
  font-size: 15px;
  font-weight: 600;
  color: var(--c2i-slate-900);
  background: #ffffff;
  transition: var(--c2i-transition);
}

.c2i-form-control:focus {
  outline: none;
  border-color: var(--c2i-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* Interactive Cutoff Chart Container */
.c2i-chart-container {
  min-height: 280px;
  position: relative;
  background: #ffffff;
  border: 1px solid var(--c2i-slate-200);
  border-radius: var(--c2i-radius-md);
  padding: 18px;
  margin-top: 20px;
}

.c2i-chart-bar-wrap {
  display: flex;
  align-items: flex-end;
  gap: 20px;
  height: 220px;
  padding-top: 30px;
  border-bottom: 2px solid var(--c2i-slate-200);
}

.c2i-chart-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
  justify-content: flex-end;
  position: relative;
}

.c2i-chart-bar {
  width: 100%;
  max-width: 50px;
  background: linear-gradient(180deg, var(--c2i-primary) 0%, var(--c2i-primary-dark) 100%);
  border-radius: 6px 6px 0 0;
  transition: height 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.c2i-chart-val-label {
  position: absolute;
  top: -24px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 12px;
  font-weight: 800;
  color: var(--c2i-slate-900);
  white-space: nowrap;
}

.c2i-chart-year-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--c2i-slate-600);
  margin-top: 8px;
}

/* Discontinued College Banner & Locked State */
.c2i-discontinued-banner {
  background: #fef2f2;
  border: 1px solid #f87171;
  border-radius: var(--c2i-radius-lg);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: 0 4px 14px rgba(239, 68, 68, 0.08);
}

.c2i-locked-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 6px;
  background: #fee2e2;
  color: #991b1b;
  font-size: 12px;
  font-weight: 700;
}

/* Alternative Colleges Accordion */
.c2i-alt-accordion {
  border: 1px solid #fecaca;
  border-radius: var(--c2i-radius-md);
  background: #ffffff;
  overflow: hidden;
  margin-top: 14px;
}

.c2i-alt-header {
  padding: 14px 18px;
  background: #fff5f5;
  font-weight: 800;
  font-size: 14px;
  color: #7f1d1d;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.c2i-alt-body {
  padding: 14px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
}

.c2i-alt-item {
  background: #f8fafc;
  border: 1px solid var(--c2i-slate-200);
  border-radius: var(--c2i-radius-sm);
  padding: 12px;
  text-decoration: none !important;
  color: var(--c2i-slate-900);
  transition: var(--c2i-transition);
}

.c2i-alt-item:hover {
  border-color: var(--c2i-primary);
  background: var(--c2i-primary-light);
  transform: translateY(-2px);
}

/* Community Quota Pill Selector */
.c2i-pill-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.c2i-quota-pill {
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  border: 1px solid var(--c2i-slate-200);
  background: #ffffff;
  color: var(--c2i-slate-700);
  cursor: pointer;
  transition: var(--c2i-transition);
}

.c2i-quota-pill.active {
  background: var(--c2i-primary);
  color: #ffffff;
  border-color: var(--c2i-primary);
}

/* Facility & Transit Grid */
.c2i-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.c2i-grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

@media (max-width: 768px) {
  .c2i-grid-2 {
    grid-template-columns: 1fr;
  }
}

.c2i-card-tile {
  background: var(--c2i-slate-50);
  border: 1px solid var(--c2i-slate-200);
  border-radius: var(--c2i-radius-md);
  padding: 16px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.c2i-tile-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
  background: var(--c2i-primary-light);
  color: var(--c2i-primary);
}

/* Status eligibility badges */
.c2i-chance-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
}
.c2i-chance-safe { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.c2i-chance-moderate { background: #fef9c3; color: #854d0e; border: 1px solid #fef08a; }
.c2i-chance-reach { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }

/* Skeleton Loading Helpers (Zero CLS) */
.c2i-skeleton {
  background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
  background-size: 200% 100%;
  animation: c2i-shimmer 1.5s infinite;
  border-radius: 6px;
}

@keyframes c2i-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}