/* ============================================================
   NEET PG 2025 MCC College Predictor — Design System
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* --- Design Tokens --- */
:root {
  --color-white: #FFFFFF;
  --color-grey-20: rgba(107, 114, 128, 0.2);
  --color-grey: #6B7280;
  --color-primary: #22C55E;
  --color-dark-green: #1D4F45;
  --color-light-grey: #9CA3AF;
  --color-light-outline: #E5E7EB;
  --color-red: #F87171;
  --color-black: #191E1B;

  --color-bg: var(--color-white);
  --color-surface: var(--color-white);
  --color-surface-alt: var(--color-light-outline);
  --color-border: var(--color-light-outline);
  --color-border-strong: var(--color-light-grey);
  --color-text: var(--color-black);
  --color-text-secondary: var(--color-grey);
  --color-text-muted: var(--color-light-grey);
  --color-text-faint: var(--color-light-grey);

  --color-primary-hover: var(--color-dark-green);
  --color-primary-light: var(--color-grey-20);
  --color-primary-text: var(--color-white);

  --color-error: var(--color-red);
  --color-error-bg: var(--color-white);
  --color-error-border: var(--color-red);

  --band-strong: var(--color-primary);
  --band-strong-bg: var(--color-white);
  --band-strong-border: var(--color-primary);
  --band-possible: var(--color-grey);
  --band-possible-bg: var(--color-white);
  --band-possible-border: var(--color-grey);
  --band-reach: var(--color-light-grey);
  --band-reach-bg: var(--color-white);
  --band-reach-border: var(--color-light-grey);
  --band-outside: var(--color-black);
  --band-outside-bg: var(--color-white);
  --band-outside-border: var(--color-black);

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --shadow-sm: 0 1px 2px var(--color-grey-20);
  --shadow-md: 0 4px 12px var(--color-grey-20);
  --shadow-lg: 0 8px 24px var(--color-grey-20);
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 112.5%; }
body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

/* --- Utility --- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 var(--space-lg); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* --- Skip Link --- */
.skip-link {
  position: absolute; top: -100px; left: var(--space-md);
  background: var(--color-primary); color: var(--color-white);
  padding: var(--space-sm) var(--space-md); border-radius: var(--radius-sm);
  z-index: 1000; font-weight: 600; text-decoration: none;
  transition: top 0.2s;
}
.skip-link:focus { top: var(--space-md); }



/* ============================================================
   PREDICTOR SECTION
   ============================================================ */
.predictor-section {
  padding: var(--space-xl) 0 var(--space-lg);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
.predictor-hero { text-align: center; margin-bottom: var(--space-md); }
.predictor-hero h1 {
  margin: 0 0 0.55rem;
  color: var(--color-primary);
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}
.predictor-subtitle {
  font-size: 0.92rem; color: var(--color-text-secondary);
  line-height: 1.55;
  max-width: 600px; margin: 0 auto;
}

/* --- Form --- */
/* --- Old Form Actions --- */
/* Kept for compatibility if needed, but overridden below for sidebar */

/* ============================================================
   LOADING / ERROR
   ============================================================ */
.loading-state { display: none; padding: var(--space-2xl) 0; text-align: center; }
.loading-state.is-visible { display: block; }
.loading-indicator { display: flex; flex-direction: column; align-items: center; gap: var(--space-md); }
.loading-spinner {
  width: 32px; height: 32px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-indicator p { font-size: 0.875rem; color: var(--color-text-muted); }

.error-box {
  background: var(--color-error-bg); border: 1px solid var(--color-error-border);
  border-radius: var(--radius-md); padding: var(--space-lg); text-align: center;
  max-width: 500px; margin: var(--space-2xl) auto;
}
.error-box p { margin-bottom: var(--space-md); color: var(--color-error); }

/* ============================================================
   RESULTS LAYOUT
   ============================================================ */
.results-section { padding: var(--space-xl) 0 var(--space-2xl); }
.results-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: var(--space-xl);
  align-items: start;
}
.results-main { min-width: 0; }

/* --- Filter Sidebar --- */
.filter-sidebar {
  position: sticky; top: -76px;
  z-index: 10;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}
.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
  flex-wrap: nowrap;
  gap: var(--space-sm);
}
.sidebar-title {
  font-size: 1.75rem; font-weight: 700; text-transform: none;
  letter-spacing: normal; color: var(--color-black);
  margin-bottom: 0;
  white-space: nowrap;
}
.icon-btn-reset {
  background: transparent; border: none; padding: 6px;
  color: var(--color-text-muted); cursor: pointer;
  border-radius: var(--radius-sm); transition: color 0.15s, background 0.15s;
  display: flex; align-items: center; justify-content: center;
}
.icon-btn-reset:hover {
  background: var(--color-surface-alt); color: var(--color-text);
}

.input-toggle {
  display: flex;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
  overflow: hidden;
}
.toggle-btn {
  flex: 1;
  text-align: center;
  padding: 12px 0;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
}
.toggle-btn.active {
  background: var(--color-primary);
  color: var(--color-white);
}
.sidebar-divider { height: 1px; background: var(--color-border); margin: var(--space-md) 0; }
.sidebar-group, .form-group { margin-bottom: var(--space-md); }
.sidebar-group label, .form-group label {
  display: block; font-size: 0.82rem; font-weight: 600;
  color: var(--color-text-secondary); margin-bottom: 8px;
}
.required-mark { display: none; }
.sidebar-group select, .form-group select, .form-group input {
  width: 100%; height: 48px; padding: 0 16px;
  border: 1px solid var(--color-border); border-radius: var(--radius-md);
  font-family: var(--font-sans); font-size: 1rem; color: var(--color-text);
  background: var(--color-surface);
  transition: border-color 0.15s;
}
.sidebar-group select, .form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24'%3E%3Cpath d='M6 9l6 6 6-6' fill='none' stroke='%236B7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 16px center;
  appearance: none; -webkit-appearance: none;
}
.form-group input {
  padding: .375rem .75rem;
  font-size: 1rem;
}
.sidebar-group select:focus, .form-group select:focus, .form-group input:focus {
  outline: none; border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-grey-20);
}
.form-group.has-error input, .form-group.has-error select {
  border-color: var(--color-error);
}
.form-error {
  font-size: 0.75rem; color: var(--color-error);
}
.form-error:not(:empty) {
  margin-top: 4px;
}

.form-actions-sidebar {
  display: flex; flex-direction: column; gap: var(--space-sm); margin-top: var(--space-lg);
}
.btn-predict {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; padding: 0.85rem 1.25rem;
  background: var(--color-primary); color: #fff;
  border: 0; border-radius: 10px;
  font-family: var(--font-sans); font-size: 1rem; font-weight: 700;
  text-decoration: none;
  cursor: pointer; transition: background 0.2s ease, transform 0.2s ease;
}
.btn-predict:hover { background: var(--color-primary-hover); }
.btn-predict:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.btn-predict:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-reset {
  display: flex; align-items: center; justify-content: center; gap: 6px;
  width: 100%; height: 44px; padding: 0 var(--space-lg);
  background: transparent; color: var(--color-text-muted);
  border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  font-family: var(--font-sans); font-size: 0.875rem; font-weight: 500;
  cursor: pointer; transition: background 0.15s, color 0.15s;
}
.btn-reset:hover { background: var(--color-surface-alt); color: var(--color-text); }
.btn-reset:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }

/* --- Toolbar --- */
.results-toolbar {
  display: flex; flex-wrap: wrap; align-items: center;
  justify-content: space-between; gap: var(--space-md);
  margin-bottom: var(--space-md);
}
.results-count { display: none; }
.results-count h2 {
  font-size: 1.75rem;
  font-weight: 900;
  text-transform: uppercase;
  color: var(--color-primary);
  margin: 0;
}
.results-count strong { font-weight: inherit; color: inherit; }
.toolbar-controls { display: flex; gap: var(--space-sm); align-items: center; width: 100%; }

/* --- Search --- */
.search-box {
  position: relative; flex: 2;
}
.state-control, .sort-control { flex: 1; }
.search-box .search-icon {
  position: absolute; left: 10px; top: 50%; transform: translateY(-50%);
  width: 16px; height: 16px; color: var(--color-text-faint); pointer-events: none;
}
.search-box input {
  width: 100%; height: 40px;
  padding: 0 10px 0 34px;
  border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  font-family: var(--font-sans); font-size: 0.9375rem;
  color: var(--color-text); background: var(--color-surface);
  transition: border-color 0.15s;
}
.search-box input:focus {
  outline: none; border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-grey-20);
}

/* --- State & Sort --- */
.state-control select,
.sort-control select {
  width: 100%; height: 40px; padding: 0 32px 0 12px;
  border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  font-family: var(--font-sans); font-size: 0.9375rem;
  color: var(--color-text-secondary); background: var(--color-surface);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 5l3 3 3-3' fill='none' stroke='%236B7280' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 10px center;
  appearance: none; -webkit-appearance: none;
  cursor: pointer;
}

/* --- Band Legend --- */
.band-legend {
  display: flex; flex-wrap: wrap; gap: var(--space-md);
  margin-bottom: var(--space-lg);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-surface-alt);
  border-radius: var(--radius-sm);
  font-size: 0.75rem; font-weight: 500; color: var(--color-text-secondary);
}
.band-tag { display: flex; align-items: center; gap: 5px; }
.band-dot { width: 8px; height: 8px; border-radius: 50%; }
.band-tag[data-band="strong"] .band-dot { background: var(--band-strong); }
.band-tag[data-band="possible"] .band-dot { background: var(--band-possible); }
.band-tag[data-band="reach"] .band-dot { background: var(--band-reach); }
.band-tag[data-band="outside"] .band-dot { background: var(--band-outside); }

/* ============================================================
   RESULT CARDS
   ============================================================ */
.result-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.result-card:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-sm);
}
/* Removed old band borders */

.result-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
}

.result-college-name {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0;
  line-height: 1.3;
}

/* Prediction Badge */
.prediction-badge {
  flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  padding: 4px 12px; border-radius: 20px;
  font-size: 0.8125rem; font-weight: 600; 
  background: var(--color-white);
}

.prediction-badge[data-band="strong"] { color: var(--color-primary); border: 1px solid var(--color-primary); }
.prediction-badge[data-band="possible"] { color: var(--color-dark-green); border: 1px solid var(--color-dark-green); }
.prediction-badge[data-band="reach"] { color: var(--color-grey); border: 1px solid var(--color-grey); }
.prediction-badge[data-band="outside"] { color: var(--color-red); border: 1px solid var(--color-red); }

.result-course-name {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.result-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.meta-group {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.meta-label {
  font-weight: 400;
}

.meta-value {
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.result-closing {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-secondary);
}

.result-allotments {
  font-size: 0.6875rem; color: var(--color-text-faint);
  margin-top: var(--space-sm); font-style: italic;
}

/* --- No Results --- */
.no-results-state {
  text-align: center; padding: var(--space-3xl) var(--space-lg);
  color: var(--color-text-muted);
}
.no-results-state svg { color: var(--color-border-strong); margin-bottom: var(--space-md); }
.no-results-state h3 { font-size: 1.125rem; margin-bottom: var(--space-sm); color: var(--color-text); }
.no-results-state p { margin-bottom: var(--space-lg); font-size: 0.875rem; }
.no-results-state .btn-reset { width: auto; margin: 0 auto; }

/* ============================================================
   PAGINATION
   ============================================================ */
.pagination {
  display: flex; align-items: center; justify-content: center;
  gap: var(--space-md); margin-top: var(--space-lg);
  padding-top: var(--space-lg); border-top: 1px solid var(--color-border);
}
.pagination-btn {
  height: 36px; padding: 0 var(--space-md);
  background: var(--color-surface); color: var(--color-primary);
  border: 1px solid var(--color-primary); border-radius: var(--radius-sm);
  font-family: var(--font-sans); font-size: 0.8125rem; font-weight: 600;
  cursor: pointer; transition: background 0.15s, color 0.15s;
}
.pagination-btn:hover { background: var(--color-primary); color: var(--color-white); }
.pagination-btn:disabled { opacity: 0.4; cursor: not-allowed; border-color: var(--color-border); color: var(--color-text-faint); }
.pagination-btn:disabled:hover { background: var(--color-surface); color: var(--color-text-faint); }
.pagination-btn:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.pagination-info { font-size: 0.8125rem; font-weight: 500; color: var(--color-text-secondary); min-width: 100px; text-align: center; }



/* ============================================================
   CONTENT SECTIONS
   ============================================================ */
.content-section {
  padding: var(--space-3xl) 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}
.content-block { max-width: 780px; margin-bottom: var(--space-2xl); }
.intro-section { max-width: 100%; }
#faq-section { margin-left: auto; margin-right: auto; }
.content-block:last-child { margin-bottom: 0; }
.content-block h2 {
  font-size: 1.25rem; font-weight: 700;
  color: var(--color-text); margin-bottom: var(--space-md);
}
.content-block p {
  font-size: 0.9375rem; color: var(--color-text-secondary);
  line-height: 1.7; margin-bottom: var(--space-md);
}
.content-block p:last-child { margin-bottom: 0; }

.formula-block {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-md) var(--space-lg);
  margin: var(--space-md) 0;
  text-align: center;
}
.formula-block code {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.9375rem; font-weight: 600;
  color: var(--color-primary);
}

.band-explanation { list-style: none; margin: var(--space-md) 0; }
.band-explanation li {
  padding: var(--space-sm) 0;
  font-size: 0.9375rem; color: var(--color-text-secondary);
}
.band-label {
  display: inline-block; padding: 2px 8px; border-radius: 4px;
  font-size: 0.75rem; font-weight: 600; margin-right: 4px;
}
.band-label[data-band="strong"] { background: var(--band-strong-bg); color: var(--band-strong); }
.band-label[data-band="possible"] { background: var(--band-possible-bg); color: var(--band-possible); }
.band-label[data-band="reach"] { background: var(--band-reach-bg); color: var(--band-reach); }
.band-label[data-band="outside"] { background: var(--band-outside-bg); color: var(--band-outside); }

.rounds-list { margin: var(--space-md) 0; }
.rounds-list dt {
  font-weight: 600; color: var(--color-text);
  font-size: 0.9375rem; margin-top: var(--space-md);
}
.rounds-list dd {
  font-size: 0.875rem; color: var(--color-text-secondary);
  margin-left: 0; padding-left: 0;
}

.quota-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-sm);
}
.quota-item {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-sm) var(--space-md);
  font-size: 0.8125rem; color: var(--color-text-secondary);
}
.quota-item strong {
  color: var(--color-primary); margin-right: var(--space-xs);
  font-size: 0.75rem;
}

/* --- FAQ --- */
.faq-list { margin-top: var(--space-md); }
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-md);
  overflow: hidden;
}
.faq-item summary {
  padding: var(--space-md);
  font-size: 0.9375rem; font-weight: 600;
  color: var(--color-white); cursor: pointer;
  background: var(--color-dark-green);
  list-style: none;
  transition: background 0.15s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before {
  content: '+'; display: inline-block; width: 20px;
  font-weight: 700; color: var(--color-white);
  margin-right: var(--space-sm);
}
.faq-item[open] summary::before { content: '−'; }
.faq-item summary:hover { background: var(--color-black); }
.faq-item p {
  padding: var(--space-sm) var(--space-lg) var(--space-lg) calc(20px + var(--space-sm) + var(--space-md));
  font-size: 0.9375rem; color: var(--color-text-secondary); line-height: 1.7;
}



/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .results-layout {
    grid-template-columns: 1fr;
  }
  .filter-sidebar { position: static; margin-bottom: var(--space-xl); }
}

@media (max-width: 640px) {
  .btn-predict, .btn-reset { width: 100%; }
  .results-toolbar { flex-direction: column; align-items: stretch; }
  .toolbar-controls { flex-direction: column; gap: var(--space-sm); }
  .search-box { width: 100%; }
  .result-meta { grid-template-columns: repeat(2, 1fr); }
  .result-card-header { flex-direction: column; }
  .prediction-badge { align-self: flex-start; }
  .band-legend { gap: var(--space-sm); }
  .quota-grid { grid-template-columns: 1fr; }
  .container { padding: 0 var(--space-md); }
}