/* ═══════════════════════════════════════════════════════════════
   UPSC Eligibility Calculator
═══════════════════════════════════════════════════════════════ */

.calc-page {
  padding: var(--space-6) 0 var(--space-12);
}

.calc-layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: var(--space-6);
  align-items: start;
}

@media (max-width: 900px) {
  .calc-layout {
    grid-template-columns: 1fr;
  }
}

/* ── FORM PANEL ─────────────────────────────────────────────── */
.calc-form-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 14px;
  padding: var(--space-5);
  position: sticky;
  top: 80px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}

@media (max-width: 900px) {
  .calc-form-panel { position: static; }
}

.calc-form__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--color-brand);
  display: flex;
  align-items: center;
  gap: 8px;
}

.calc-form__title::before {
  content: '';
  width: 4px; height: 22px;
  background: var(--color-accent);
  border-radius: 2px;
}

.calc-field {
  margin-bottom: var(--space-4);
}

.calc-field__label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  margin-bottom: 6px;
}

.calc-field__hint {
  font-weight: normal;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-left: 4px;
}

.calc-field__input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.calc-field__input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(212,160,23,0.15);
}

.calc-radio-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 4px;
}

.calc-radio {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--color-border-light);
  border-radius: 7px;
  cursor: pointer;
  font-size: var(--text-sm);
  transition: background 0.12s, border-color 0.12s;
}

.calc-radio:hover {
  background: var(--color-bg-alt);
  border-color: var(--color-border);
}

.calc-radio input[type="radio"] {
  accent-color: var(--color-accent);
  flex-shrink: 0;
}

.calc-radio input[type="radio"]:checked + span {
  font-weight: var(--font-semibold);
  color: var(--color-brand);
}

.calc-radio:has(input:checked) {
  background: rgba(212,160,23,0.06);
  border-color: var(--color-accent);
}

.calc-btn {
  width: 100%;
  padding: 11px 18px;
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s, box-shadow 0.15s;
  margin-bottom: var(--space-2);
  font-family: var(--font-body);
}

.calc-btn--primary {
  background: var(--color-brand);
  color: #fff;
  box-shadow: 0 2px 6px rgba(15,76,58,0.15);
}

.calc-btn--primary:hover {
  background: #0d4031;
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(15,76,58,0.22);
}

.calc-btn--ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.calc-btn--ghost:hover {
  background: var(--color-bg-alt);
  color: var(--color-text);
}

.calc-form__error {
  padding: 10px 12px;
  background: #fef2f2;
  border: 1px solid #fca5a5;
  color: var(--color-error);
  border-radius: 7px;
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  margin-bottom: 12px;
  line-height: 1.4;
}

.calc-form__note {
  margin-top: var(--space-4);
  padding: 10px 12px;
  background: rgba(212,160,23,0.08);
  border-left: 3px solid var(--color-accent);
  border-radius: 4px;
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* ── RESULTS PANEL ──────────────────────────────────────────── */
.calc-results-panel {
  min-height: 500px;
}

.calc-empty-state {
  background: var(--color-surface);
  border: 2px dashed var(--color-border-light);
  border-radius: 14px;
  padding: var(--space-8) var(--space-6);
  text-align: center;
}

.calc-empty__icon {
  font-size: 48px;
  margin-bottom: var(--space-3);
  opacity: 0.6;
}

.calc-empty-state h3 {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  color: var(--color-text);
  margin-bottom: 8px;
}

.calc-empty-state > p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  margin-bottom: var(--space-6);
}

.calc-empty__features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  max-width: 500px;
  margin: 0 auto;
}

.calc-empty__feature {
  display: flex;
  gap: 10px;
  padding: 12px;
  background: var(--color-bg);
  border-radius: 8px;
  text-align: left;
  align-items: flex-start;
}

.calc-empty__feat-icon {
  font-size: 20px;
  flex-shrink: 0;
}

.calc-empty__feature strong {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text);
  margin-bottom: 2px;
}

.calc-empty__feature span {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ── RESULT CARDS ───────────────────────────────────────────── */
.calc-result {
  animation: calcFadeIn 0.4s ease;
}

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

.calc-verdict {
  border-radius: 14px;
  padding: var(--space-5);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}

.calc-verdict--eligible {
  background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
  border: 1px solid #86efac;
}

.calc-verdict--ineligible {
  background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
  border: 1px solid #fca5a5;
}

.calc-verdict__icon {
  width: 60px; height: 60px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 32px;
  flex-shrink: 0;
}

.calc-verdict--eligible .calc-verdict__icon {
  background: #22c55e;
  color: #fff;
}

.calc-verdict--ineligible .calc-verdict__icon {
  background: #ef4444;
  color: #fff;
}

.calc-verdict__text h2 {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--color-text);
}

.calc-verdict__text p {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* Stat grid */
.calc-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

@media (max-width: 600px) {
  .calc-stats { grid-template-columns: repeat(2, 1fr); }
}

.calc-stat {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 10px;
  padding: var(--space-4) var(--space-3);
  text-align: center;
}

.calc-stat__value {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-brand);
  line-height: 1;
  margin-bottom: 4px;
}

.calc-stat__value--warn { color: #d97706; }
.calc-stat__value--danger { color: #dc2626; }
.calc-stat__value--ok { color: #16a34a; }

.calc-stat__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: var(--font-semibold);
}

/* Detail rows */
.calc-detail-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 12px;
  margin-bottom: var(--space-3);
  overflow: hidden;
}

.calc-detail-card__header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border-light);
  font-weight: var(--font-semibold);
  font-size: var(--text-sm);
}

.calc-detail-card__header::before {
  content: '';
  width: 3px;
  height: 18px;
  background: var(--color-accent);
  border-radius: 2px;
}

.calc-detail-card__body {
  padding: 14px 18px;
}

.calc-detail-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border-light);
  font-size: var(--text-sm);
  gap: 16px;
}

.calc-detail-row:last-child { border-bottom: none; }

.calc-detail-row__label {
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.calc-detail-row__value {
  color: var(--color-text);
  font-weight: var(--font-semibold);
  text-align: right;
}

.calc-detail-row__value--success { color: #16a34a; }
.calc-detail-row__value--warn { color: #d97706; }
.calc-detail-row__value--danger { color: #dc2626; }

/* Roadmap table */
.calc-roadmap {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
  margin-top: 8px;
}

.calc-roadmap th {
  background: var(--color-bg-alt);
  padding: 10px 12px;
  text-align: left;
  font-weight: var(--font-semibold);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
}

.calc-roadmap td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border-light);
}

.calc-roadmap tr:last-child td { border-bottom: none; }

.calc-roadmap-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
}

.calc-roadmap-badge--ok {
  background: #dcfce7;
  color: #15803d;
}

.calc-roadmap-badge--last {
  background: #fef9c3;
  color: #a16207;
}

.calc-roadmap-badge--no {
  background: #fee2e2;
  color: #b91c1c;
}

.calc-roadmap tr.last-eligible td {
  background: rgba(212,160,23,0.05);
  font-weight: var(--font-semibold);
}

/* Warnings / notes block */
.calc-notes {
  background: rgba(59,130,246,0.06);
  border: 1px solid rgba(59,130,246,0.2);
  border-radius: 10px;
  padding: 14px 18px;
  margin-bottom: var(--space-3);
}

.calc-notes h4 {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: #1e40af;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.calc-notes ul {
  margin: 0;
  padding-left: 20px;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.calc-notes li { margin-bottom: 4px; }

/* Share / print actions */
.calc-actions {
  display: flex;
  gap: 10px;
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-light);
  flex-wrap: wrap;
}

.calc-action-btn {
  flex: 1;
  min-width: 140px;
  padding: 10px 14px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border-light);
  border-radius: 7px;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text);
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s;
  font-family: var(--font-body);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.calc-action-btn:hover {
  background: var(--color-bg);
  border-color: var(--color-border);
}

/* ── REFERENCE SECTION ──────────────────────────────────────── */
.calc-reference {
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border-light);
}

.calc-ref__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--color-brand);
  margin-bottom: 6px;
}

.calc-ref__sub {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

.calc-ref__sub a {
  color: var(--color-accent);
  text-decoration: none;
}

.calc-ref__sub a:hover { text-decoration: underline; }

.calc-ref-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

@media (max-width: 800px) {
  .calc-ref-grid { grid-template-columns: 1fr; }
}

.calc-ref-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 12px;
  padding: var(--space-5);
}

.calc-ref-card__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.calc-table-wrap {
  overflow-x: auto;
  border-radius: 7px;
  border: 1px solid var(--color-border-light);
}

.calc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.calc-table th {
  background: var(--color-bg-alt);
  padding: 8px 12px;
  text-align: left;
  font-weight: var(--font-semibold);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
}

.calc-table td {
  padding: 8px 12px;
  border-top: 1px solid var(--color-border-light);
}

.calc-table tbody tr:hover { background: var(--color-bg-alt); }

.calc-ref-list {
  margin: 0;
  padding-left: 18px;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.calc-ref-list li { margin-bottom: 8px; }

.calc-ref-list strong { color: var(--color-text); }

.calc-ref-note {
  margin-top: var(--space-3);
  padding: 10px 12px;
  background: var(--color-bg-alt);
  border-radius: 7px;
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* ── FAQ ────────────────────────────────────────────────────── */
.calc-faq {
  margin-top: var(--space-10);
  max-width: 900px;
}

.calc-faq__item {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 10px;
  margin-bottom: 10px;
  overflow: hidden;
}

.calc-faq__item summary {
  padding: 14px 18px;
  font-weight: var(--font-semibold);
  font-size: var(--text-sm);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-text);
  transition: background 0.12s;
}

.calc-faq__item summary:hover {
  background: var(--color-bg-alt);
}

.calc-faq__item summary::-webkit-details-marker { display: none; }

.calc-faq__item summary::after {
  content: '+';
  font-size: 20px;
  color: var(--color-accent);
  font-weight: 400;
  transition: transform 0.2s;
}

.calc-faq__item[open] summary::after {
  content: '−';
}

.calc-faq__item p {
  padding: 0 18px 14px;
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.calc-faq__item strong {
  color: var(--color-text);
}

/* ── Stat sub-labels + progress bars ───────────────────────── */
.calc-stat__sub {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-top: 4px;
  font-weight: var(--font-medium);
}

.calc-stat__bar {
  height: 4px;
  background: var(--color-bg-alt);
  border-radius: 2px;
  margin-top: 8px;
  overflow: hidden;
}

.calc-stat__bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #22c55e 0%, #16a34a 100%);
  border-radius: 2px;
  transition: width 0.8s ease;
}

.calc-stat__bar-fill--used {
  background: linear-gradient(90deg, #f59e0b 0%, #d97706 100%);
}

/* ── Strategy block ────────────────────────────────────────── */
.calc-strategy {
  border-radius: 12px;
  padding: var(--space-4) var(--space-5);
  margin-bottom: var(--space-3);
  border-left: 4px solid;
}

.calc-strategy--success {
  background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 100%);
  border-left-color: #22c55e;
}

.calc-strategy--warn {
  background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
  border-left-color: #f59e0b;
}

.calc-strategy--danger {
  background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
  border-left-color: #ef4444;
}

.calc-strategy__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--color-text);
}

.calc-strategy__list {
  margin: 0;
  padding-left: 18px;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.calc-strategy__list li {
  margin-bottom: 8px;
}

.calc-strategy__list strong {
  color: var(--color-text);
}

.calc-strategy__list a {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: var(--font-semibold);
}

.calc-strategy__list a:hover { text-decoration: underline; }

/* ── Timeline ──────────────────────────────────────────────── */
.calc-timeline {
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
}

.calc-timeline::before {
  content: '';
  position: absolute;
  left: 13px;
  top: 0; bottom: 0;
  width: 2px;
  background: var(--color-border-light);
}

.calc-timeline__item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  position: relative;
}

.calc-timeline__dot {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  font-size: 12px;
  font-weight: var(--font-semibold);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  z-index: 1;
  box-shadow: 0 0 0 3px var(--color-surface);
}

.calc-timeline__content {
  padding-top: 3px;
}

.calc-timeline__stage {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  margin-bottom: 2px;
}

.calc-timeline__when {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ── Resource grid ─────────────────────────────────────────── */
.calc-resource-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
}

.calc-resource-card {
  display: block;
  padding: 14px;
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: 10px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}

.calc-resource-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.06);
  border-color: var(--color-accent);
}

.calc-resource-card__icon {
  font-size: 22px;
  margin-bottom: 6px;
}

.calc-resource-card__title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-brand);
  margin-bottom: 4px;
}

.calc-resource-card__desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ── How-to list ───────────────────────────────────────────── */
.calc-howto-list {
  margin: 0;
  padding-left: 22px;
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-text-secondary);
  counter-reset: howto;
}

.calc-howto-list li {
  margin-bottom: 10px;
}

.calc-howto-list strong { color: var(--color-text); }

.calc-howto-list a {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: var(--font-medium);
}

.calc-howto-list a:hover { text-decoration: underline; }

/* Action button that is also a link */
a.calc-action-btn {
  text-decoration: none;
  color: var(--color-text);
}

/* Utility */
.hidden { display: none !important; }