/* ── Reset & Base ──────────────────────────────────────────────────────────── */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #F0F4F8;
  --color-surface: #FFFFFF;
  --color-border: #E2E8F0;
  --color-text: #1E293B;
  --color-muted: #64748B;
  --color-primary: #2563EB;
  --color-primary-hover: #1D4ED8;
  --color-primary-light: #EFF6FF;
  --color-danger: #EF4444;
  --color-danger-hover: #DC2626;

  --color-pending-bg: #FFFBEB;
  --color-pending-border: #F59E0B;
  --color-pending-text: #92400E;
  --color-pending-badge-bg: #FEF3C7;
  --color-pending-badge-text: #B45309;

  --color-graded-bg: #F0FDF4;
  --color-graded-border: #22C55E;
  --color-graded-text: #14532D;
  --color-graded-badge-bg: #DCFCE7;
  --color-graded-badge-text: #15803D;

  --color-error-bg: #FEF2F2;
  --color-error-border: #EF4444;
  --color-error-text: #7F1D1D;
  --color-error-badge-bg: #FEE2E2;
  --color-error-badge-text: #B91C1C;

  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.04);
  --shadow-lg: 0 20px 40px rgba(0,0,0,.12), 0 8px 16px rgba(0,0,0,.06);
  --transition: 180ms ease;
}

html {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 15px;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
}

/* ── Header ────────────────────────────────────────────────────────────────── */

.header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 0 32px;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-icon {
  font-size: 28px;
  line-height: 1;
}

.header-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.3px;
}

.header-sub {
  font-size: 12px;
  color: var(--color-muted);
  margin-top: 1px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ── Stats Bar ─────────────────────────────────────────────────────────────── */

.stats-bar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 10px 32px;
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 13px;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.stat-num {
  font-weight: 700;
  font-size: 15px;
  color: var(--color-text);
}

.stat-label {
  color: var(--color-muted);
}

.stat-divider {
  width: 1px;
  height: 20px;
  background: var(--color-border);
}

.stat-spacer {
  flex: 1;
}

.stat-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.dot-pending { background: var(--color-pending-border); }
.dot-graded  { background: var(--color-graded-border); }
.dot-error   { background: var(--color-error-border); }

.stat-last-poll {
  color: var(--color-muted);
  font-size: 12px;
}

/* ── Buttons ───────────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--color-muted);
  border-color: var(--color-border);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--color-bg);
  color: var(--color-text);
  border-color: #CBD5E1;
}

.btn-danger {
  background: var(--color-danger);
  color: #fff;
  border-color: var(--color-danger);
}

.btn-danger:hover:not(:disabled) {
  background: var(--color-danger-hover);
}

.btn-lg {
  padding: 12px 24px;
  font-size: 15px;
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  border: none;
  background: transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--color-muted);
  transition: background var(--transition), color var(--transition);
}

.btn-icon:hover {
  background: rgba(0,0,0,.06);
  color: var(--color-text);
}

.btn-icon.btn-icon-delete:hover {
  background: #FEE2E2;
  color: var(--color-danger);
}

/* ── Main / Grid ───────────────────────────────────────────────────────────── */

.main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 32px;
}

.tests-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

/* ── Card ──────────────────────────────────────────────────────────────────── */

.card {
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1.5px solid var(--color-border);
  border-left-width: 4px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--transition), transform var(--transition);
  overflow: hidden;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-pending {
  border-left-color: var(--color-pending-border);
  background: var(--color-pending-bg);
}

.card-graded {
  border-left-color: var(--color-graded-border);
  background: var(--color-graded-bg);
}

.card-error {
  border-left-color: var(--color-error-border);
  background: var(--color-error-bg);
}

.card-header {
  padding: 14px 16px 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.card-actions {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
}

.card-body {
  padding: 0 16px 14px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  line-height: 1.4;
  display: block;
}

.card-title:hover {
  text-decoration: underline;
  color: var(--color-primary);
}

.card-subtitle {
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.4;
}

.card-result {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
  padding: 8px 10px;
  background: var(--color-graded-badge-bg);
  border-radius: var(--radius-sm);
}

.card-result-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-graded-text);
}

.card-result-percent {
  font-size: 13px;
  color: var(--color-graded-text);
  font-weight: 500;
  opacity: .75;
}

.card-error-msg {
  font-size: 12px;
  color: var(--color-error-badge-text);
  background: var(--color-error-badge-bg);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  word-break: break-word;
  margin-top: 4px;
}

.card-footer {
  padding: 10px 16px;
  border-top: 1px solid rgba(0,0,0,.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-time {
  font-size: 12px;
  color: var(--color-muted);
}

/* ── Badge ─────────────────────────────────────────────────────────────────── */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.badge-pending {
  background: var(--color-pending-badge-bg);
  color: var(--color-pending-badge-text);
}

.badge-graded {
  background: var(--color-graded-badge-bg);
  color: var(--color-graded-badge-text);
}

.badge-error {
  background: var(--color-error-badge-bg);
  color: var(--color-error-badge-text);
}

/* ── Loading & Empty states ────────────────────────────────────────────────── */

.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 80px 20px;
  color: var(--color-muted);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.spinning {
  animation: spin .7s linear infinite;
}

.empty-state {
  text-align: center;
  padding: 80px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.empty-icon {
  font-size: 56px;
  line-height: 1;
}

.empty-state h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
}

.empty-state p {
  font-size: 15px;
  color: var(--color-muted);
  max-width: 420px;
  line-height: 1.6;
}

/* ── Modal ─────────────────────────────────────────────────────────────────── */

.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fade-in .15s ease;
}

.modal-overlay.open {
  display: flex;
}

@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.modal {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  animation: slide-up .15s ease;
}

.modal-wide {
  max-width: 640px;
}

.modal-sm {
  max-width: 400px;
}

@keyframes slide-up {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.modal-header {
  padding: 20px 24px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--color-border);
}

.modal-title {
  font-size: 17px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}

.modal-close {
  background: none;
  border: none;
  font-size: 18px;
  cursor: pointer;
  color: var(--color-muted);
  padding: 4px 6px;
  border-radius: 6px;
  transition: background var(--transition), color var(--transition);
}

.modal-close:hover {
  background: var(--color-bg);
  color: var(--color-text);
}

.modal-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.modal-footer {
  padding: 16px 24px 20px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  border-top: 1px solid var(--color-border);
}

/* ── Settings sections ─────────────────────────────────────────────────────── */

.settings-section {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.settings-section-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: .5px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

/* ── Form elements ─────────────────────────────────────────────────────────── */

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-row {
  flex-direction: row;
  align-items: center;
}

.form-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
}

.form-input {
  width: 100%;
  padding: 9px 12px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 14px;
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}

.form-input.error {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px rgba(239,68,68,.12);
}

.form-input-sm {
  width: 90px;
}

.form-textarea {
  resize: vertical;
  min-height: 90px;
  font-family: 'Menlo', 'Monaco', 'Courier New', monospace;
  font-size: 12px;
}

.form-hint {
  font-size: 12px;
  color: var(--color-muted);
  line-height: 1.5;
}

.form-hint code {
  background: var(--color-bg);
  padding: 1px 5px;
  border-radius: 4px;
  font-family: 'Menlo', 'Monaco', monospace;
}

.form-unit {
  font-size: 14px;
  color: var(--color-muted);
  padding-left: 8px;
  white-space: nowrap;
}

.form-error {
  background: var(--color-error-badge-bg);
  color: var(--color-error-badge-text);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  border: 1px solid #FECACA;
}

.form-success {
  background: var(--color-graded-badge-bg);
  color: var(--color-graded-badge-text);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  border: 1px solid #BBF7D0;
}

/* ── Toast ─────────────────────────────────────────────────────────────────── */

.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background: var(--color-text);
  color: #fff;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  box-shadow: var(--shadow-md);
  animation: toast-in .2s ease;
  max-width: 320px;
}

.toast.toast-success { background: #16A34A; }
.toast.toast-error   { background: var(--color-danger); }

@keyframes toast-in {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ── Responsive ────────────────────────────────────────────────────────────── */

@media (max-width: 640px) {
  .header { padding: 0 16px; }
  .header-sub { display: none; }
  .header-actions { gap: 4px; }
  /* Ghost gomboknál csak az ikon marad mobilon */
  .btn-ghost .btn-text { display: none; }
  .btn-ghost { padding: 8px; }
  .main { padding: 20px 16px; }
  .stats-bar { padding: 10px 16px; gap: 12px; overflow-x: auto; }
  .tests-grid { grid-template-columns: 1fr; }
  .btn-primary { padding: 8px 12px; font-size: 13px; }
}