/* =============================================================================
   Marius Dojo - Modern palette (70% neutrals, 20% dark, 10% accents)
   Sidebar/topbar: #35374B | Page: #F5F7FA | Cards: #FFFFFF | Primary: #50727B
   ============================================================================= */

:root {
  /* Base */
  --bg-app: #F5F7FA;
  --bg-sidebar: #35374B;
  --bg-card: #FAFAFA;
  --bg-input: #F9FAFB;
  --border: #E5E7EB;
  --table-header: #344955;
  /* Text */
  --text: #111827;
  --text-muted: #6B7280;
  /* Accents */
  --primary: #50727B;
  --primary-hover: #455a63;
  --success: #78A083;
  --danger: #EF4444;
  --warning: #F59E0B;
  --info: #3B82F6;
  /* Sidebar (dark) text */
  --sidebar-text: #E5E7EB;
  --sidebar-text-muted: #9CA3AF;
  /* Layout */
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.06);
  --sidebar-width: 220px;
}

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

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg-app);
  min-height: 100vh;
  -webkit-tap-highlight-color: transparent;
}

.hidden {
  display: none !important;
}

/* -----------------------------------------------------------------------------
   Login view
   ----------------------------------------------------------------------------- */
#login-view,
#pin-gate-view {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: var(--bg-sidebar);
  background-image: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(80, 114, 123, 0.2), transparent);
}

.login-main {
  width: 100%;
  max-width: 400px;
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 2.25rem;
  box-shadow: var(--shadow-card), 0 4px 24px rgba(0, 0, 0, 0.12);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.login-card:hover {
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}

.login-logo {
  display: block;
  height: 80px;
  width: auto;
  margin: 0 auto 1rem;
  object-fit: contain;
}

.pin-gate-logo {
  height: 56px;
  margin-bottom: 0.75rem;
}

.login-card h1 {
  margin: 0 0 0.25rem 0;
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.login-subtitle,
.pin-gate-intro {
  margin: 0 0 1.75rem 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

#login-view .login-card,
#pin-gate-view .pin-gate-card {
  color: var(--text);
}

/* Shared auth form styles (login + register) */
.auth-form label {
  display: block;
  margin: 1.1rem 0 0.4rem 0;
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.auth-form label:first-of-type {
  margin-top: 0;
}

.auth-form input {
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-input);
  color: var(--text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.auth-form input::placeholder {
  color: var(--text-muted);
  opacity: 0.8;
}

.auth-form input:hover {
  border-color: rgba(151, 151, 151, 0.8);
}

.auth-form input:focus,
.auth-form input:focus-visible {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(168, 176, 0, 0.2);
}

.auth-form button[type="submit"] {
  width: 100%;
  margin-top: 1.5rem;
  padding: 0.8rem 1rem;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: var(--primary);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s ease, transform 0.1s ease, box-shadow 0.2s ease;
}

.auth-form button[type="submit"]:hover:not(:disabled) {
  background: var(--primary-hover);
  box-shadow: 0 4px 12px rgba(168, 176, 0, 0.35);
}

.auth-form button[type="submit"]:active:not(:disabled) {
  transform: scale(0.99);
}

.auth-form button[type="submit"]:disabled {
  opacity: 0.85;
  cursor: wait;
}

.auth-form button[type="submit"].btn-loading {
  position: relative;
  color: transparent;
}

.auth-form button[type="submit"].btn-loading::after {
  content: '';
  position: absolute;
  inset: 0;
  margin: auto;
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: auth-spin 0.6s linear infinite;
}

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

/* Register form: two columns for first/last name */
#register-form .auth-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

#register-form .auth-form-row label {
  margin-top: 0;
}

#register-form .auth-form-row + label {
  margin-top: 1.1rem;
}

@media (max-width: 380px) {
  #register-form .auth-form-row {
    grid-template-columns: 1fr;
  }
}

.error-text {
  margin-top: 1rem;
  padding: 0.5rem 0;
  color: var(--danger);
  font-size: 0.9rem;
  border-radius: var(--radius);
}

.success-text {
  margin-top: 1rem;
  padding: 0.5rem 0;
  color: var(--success, #0d7d0d);
  font-size: 0.9rem;
}

.login-switch {
  margin-top: 1.25rem;
  font-size: 0.9rem;
  text-align: center;
}

.link-btn {
  background: none;
  border: none;
  color: var(--primary);
  cursor: pointer;
  padding: 0.25rem 0;
  font-size: inherit;
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.2s ease;
}

.link-btn:hover {
  color: var(--primary-hover);
}

.link-btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 2px;
}

.forgot-password-wrap {
  margin: 0.75rem 0 0;
  font-size: 0.9rem;
}

#reset-password-block .reset-password-intro {
  margin: 0 0 1rem 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

#reset-password-block button[type="button"]:not(.link-btn) {
  width: 100%;
  margin-top: 1rem;
  padding: 0.8rem 1rem;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: var(--primary);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s ease, transform 0.1s ease;
}

#reset-password-block button[type="button"]:not(.link-btn):hover:not(:disabled) {
  background: var(--primary-hover);
}

#reset-password-block .link-btn {
  display: block;
  margin-top: 0.75rem;
  text-align: center;
}

/* -----------------------------------------------------------------------------
   App shell: sidebar + main
   ----------------------------------------------------------------------------- */
#app-shell {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  background: var(--bg-sidebar);
  border-right: 1px solid rgba(0, 0, 0, 0.15);
  display: flex;
  flex-direction: column;
  transition: width 0.2s ease, min-width 0.2s ease;
}

.sidebar--closed {
  width: 56px;
  min-width: 56px;
}

.sidebar--closed .sidebar-title,
.sidebar--closed .sidebar-logo,
.sidebar--closed .sidebar-nav {
  opacity: 0;
  overflow: hidden;
  pointer-events: none;
  width: 0;
  padding: 0;
  margin: 0;
}

.sidebar--closed .sidebar-header {
  justify-content: center;
  padding-left: 0;
  padding-right: 0;
}

.sidebar--closed .sidebar-toggle .sidebar-toggle-icon {
  transform: rotate(180deg);
}

.sidebar-header {
  padding: 1.25rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.sidebar:not(.sidebar--closed) .sidebar-toggle {
  margin-left: auto;
}

.sidebar-logo {
  height: 52px;
  width: auto;
  flex-shrink: 0;
  object-fit: contain;
  display: block;
}

.sidebar-toggle {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  padding: 0;
  border: none;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--sidebar-text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s;
}

.sidebar-toggle:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.sidebar-toggle-icon {
  font-size: 1rem;
  line-height: 1;
  transition: transform 0.2s ease;
}

.sidebar-title {
  font-weight: 700;
  font-size: 1rem;
  color: var(--sidebar-text);
  white-space: nowrap;
  transition: opacity 0.15s;
}

.sidebar-nav {
  padding: 1rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.nav-link {
  padding: 0.6rem 1rem;
  color: var(--sidebar-text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.15s, background 0.15s;
  border: none;
  background: none;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.nav-link:hover {
  color: var(--text);
  background: rgba(0, 0, 0, 0.04);
}

.sidebar .nav-link:hover {
  color: var(--sidebar-text);
  background: rgba(255, 255, 255, 0.08);
}

.nav-link.active {
  color: var(--sidebar-text);
  background: rgba(80, 114, 123, 0.35);
}

.sidebar .nav-link.active {
  color: var(--sidebar-text);
  background: rgba(80, 114, 123, 0.35);
}

.nav-link-btn {
  margin-top: auto;
}

.nav-group {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.nav-group-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  text-align: left;
  gap: 0.6rem;
}

.nav-group-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex: 1;
  min-width: 0;
}

.nav-group-icon {
  font-size: 0.7rem;
  line-height: 1;
  transition: transform 0.1s ease;
  flex-shrink: 0;
}

.nav-group--expanded .nav-group-icon {
  transform: rotate(90deg);
}

.nav-group-children {
  display: none;
  flex-direction: column;
  gap: 0;
  padding-left: 0.25rem;
  border-left: 2px solid rgba(255, 255, 255, 0.15);
  margin-left: 0.6rem;
  margin-top: 0.15rem;
  margin-bottom: 0.15rem;
}

.nav-group--expanded .nav-group-children {
  display: flex;
}

.nav-link-child {
  padding: 0.4rem 0.75rem;
  font-size: 0.9rem;
}

.main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.topbar {
  padding: 1rem 1.5rem;
  background: var(--bg-sidebar);
  border-bottom: 1px solid rgba(0, 0, 0, 0.15);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.topbar h2 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--sidebar-text);
}

.user-profile-btn {
  font-size: 0.85rem;
  color: var(--sidebar-text-muted);
  background: none;
  border: none;
  padding: 0.4rem 0.5rem;
  cursor: pointer;
  font-family: inherit;
  border-radius: 6px;
  transition: color 0.15s, background 0.15s;
}

.user-profile-btn:hover {
  color: var(--sidebar-text);
  background: rgba(255, 255, 255, 0.08);
}

.user-display-name {
  font-weight: 500;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.lang-switcher {
  font-size: 0.8rem;
  color: var(--sidebar-text-muted);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 0.35rem 0.5rem;
  border-radius: 6px;
  cursor: pointer;
  font-family: inherit;
  min-width: 2.25rem;
  transition: color 0.15s, background 0.15s;
}

.lang-switcher:hover {
  color: var(--sidebar-text);
  background: rgba(255, 255, 255, 0.15);
}

.profile-modal-form .form-group input[readonly],
.profile-modal-form .form-group input:disabled {
  background: rgba(0, 0, 0, 0.04);
  color: var(--text-muted);
  cursor: default;
}

.profile-password-section .btn {
  margin-top: 0.25rem;
}

.main-content {
  flex: 1;
  padding: 1.5rem;
  overflow: auto;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.main-content:has(.line-chart-view) {
  overflow: hidden;
}

.main-content:has(.line-chart-view) .line-chart-view {
  flex: 1;
  min-height: 0;
}

/* -----------------------------------------------------------------------------
   Buttons
   ----------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  font-weight: 500;
  font-family: inherit;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.btn:hover {
  background: rgba(151, 151, 151, 0.2);
  border-color: var(--border);
}

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

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

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

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.1);
}

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

.btn-success:hover {
  opacity: 0.9;
}

.btn-sm {
  padding: 0.35rem 0.65rem;
  font-size: 0.8rem;
}

/* -----------------------------------------------------------------------------
   Settings block (e.g. activation PIN on Coaches)
   ----------------------------------------------------------------------------- */
.settings-block {
  margin-bottom: 1.5rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
}

.settings-block-title {
  margin: 0 0 0.35rem 0;
  font-size: 1rem;
  font-weight: 600;
}

.settings-block-desc {
  margin: 0 0 0.75rem 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.activation-pin-form {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.activation-pin-form input {
  width: 8rem;
  padding: 0.4rem 0.6rem;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
}

.set-pin-message {
  margin: 0.5rem 0 0;
  font-size: 0.875rem;
}

.set-pin-message.hidden {
  display: none;
}

/* -----------------------------------------------------------------------------
   Exam line chart (scores over time, one line per belt, points = members)
   ----------------------------------------------------------------------------- */
.line-chart-view {
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - 6rem);
  position: relative;
}

.line-chart-header {
  margin-bottom: 0.75rem;
  flex-shrink: 0;
}

.line-chart-top-row {
  display: grid;
  grid-template-columns: 1fr minmax(16rem, 22rem);
  gap: 1rem;
  flex: 1;
  min-height: 0;
  align-items: stretch;
}

.line-chart-wrap {
  min-width: 0;
  min-height: 280px;
  display: flex;
  flex-direction: column;
  position: relative;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  overflow: visible;
}

.line-chart-wrap .line-chart-svg {
  width: 100%;
  height: 100%;
  min-height: 280px;
  flex: 1;
}

.line-chart-rating-panel {
  min-width: 0;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.line-chart-filters-row {
  flex-shrink: 0;
  padding: 0.75rem 0;
}

.line-chart-bottom-section {
  flex-shrink: 0;
  margin-top: 1rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
}


.line-chart-title {
  margin: 0 0 0.25rem 0;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
}

.line-chart-desc {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.line-chart-header-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.line-chart-exam-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.line-chart-exam-select {
  padding: 0.4rem 0.6rem;
  font-size: 0.9rem;
  color: var(--text);
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  min-width: 12rem;
  max-width: 100%;
}

.line-chart-rating {
  flex: 1;
  min-height: 0;
  padding: 1rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  display: flex;
  flex-direction: column;
}

.line-chart-rating-panel .line-chart-rating {
  height: 100%;
}

.line-chart-rating-title {
  margin: 0 0 0.75rem 0;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
}

.line-chart-rating-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  padding: 0.35rem 0;
  font-size: 0.875rem;
  border-bottom: 1px solid var(--border);
}

.line-chart-rating-row:last-child {
  border-bottom: none;
}

.line-chart-rating-label {
  color: var(--text-muted);
}

.line-chart-rating-value {
  font-weight: 600;
  color: var(--text);
}


.line-chart-svg {
  display: block;
}

.line-chart-grid {
  stroke: var(--border);
  stroke-width: 1;
  stroke-dasharray: 4 4;
  opacity: 0.6;
}

.line-chart-series {
  transition: opacity 0.2s ease;
}

.line-chart-point {
  cursor: pointer;
  pointer-events: all;
  transition: r 0.15s ease, opacity 0.2s ease;
}

.line-chart-point:hover {
  r: 8;
}

.line-chart-point--passed {
  fill: var(--success);
  stroke: var(--border);
  stroke-width: 2;
}

.line-chart-point--failed {
  fill: var(--danger);
  stroke: var(--border);
  stroke-width: 2;
}

.line-chart-tick {
  font-size: 0.7rem;
  fill: var(--text-muted);
}

.line-chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin-top: 0.75rem;
  padding: 0 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.line-chart-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.line-chart-legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.line-chart-tooltip {
  position: absolute;
  z-index: 10;
  padding: 0.5rem 0.75rem;
  min-width: 10rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  color: var(--text);
  pointer-events: none;
}

.line-chart-tooltip-member {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
}

.line-chart-tooltip-detail {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.line-chart-tooltip {
  pointer-events: none;
  transition: opacity 0.15s ease;
}

.line-chart-tooltip.hidden {
  visibility: hidden;
  opacity: 0;
}

.line-chart-filters {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
}

.line-chart-filter-action {
  padding: 0.35rem 0.65rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.line-chart-filter-action:hover {
  color: var(--text);
  border-color: var(--primary);
  background: rgba(82, 137, 173, 0.1);
}

.line-chart-filters-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.5rem;
}

.line-chart-filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.6rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.15s, background 0.15s, border-color 0.15s, opacity 0.15s;
}

.line-chart-filter-btn:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.line-chart-filter-btn--active {
  color: var(--text);
  border-color: var(--belt-color, var(--primary));
  background: color-mix(in srgb, var(--belt-color, var(--primary)) 18%, transparent);
}

.line-chart-filter-btn--active:hover {
  background: color-mix(in srgb, var(--belt-color, var(--primary)) 28%, transparent);
}

.line-chart-filter-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--belt-color, var(--primary));
}


.line-chart-members-section {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.line-chart-members-section .line-chart-members-content {
  max-height: 24rem;
}

.line-chart-members-title {
  margin: 0 0 0.75rem 0;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
}

.line-chart-members-content {
  overflow: auto;
  flex: 1;
  min-height: 0;
}

.line-chart-members-empty {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.line-chart-members-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.line-chart-members-table th,
.line-chart-members-table td {
  padding: 0.5rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.line-chart-members-table th {
  color: var(--text-muted);
  font-weight: 500;
}

.line-chart-members-table .belt-badge,
.line-chart-members-table .exam-result-badge {
  font-size: 0.8rem;
}

.line-chart-member-row {
  cursor: pointer;
  transition: background 0.15s;
}

.line-chart-member-row:hover {
  background: rgba(255, 255, 255, 0.06);
}

/* -----------------------------------------------------------------------------
   Member score chart (exam detail: dots + line, palette #35374B, #344955, #50727B, #78A083)
   ----------------------------------------------------------------------------- */
:root {
  --chart-dark: #35374B;
  --chart-mid: #344955;
  --chart-teal: #50727B;
  --chart-green: #78A083;
}

.member-score-chart-wrap {
  margin: 1rem 0;
}

.member-score-chart {
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
}

.member-chart-title {
  margin: 0 0 0.75rem 0;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
}

.member-chart-wrap {
  position: relative;
  overflow: visible;
}

.member-chart-svg {
  display: block;
  max-width: 100%;
}

.member-chart-grid {
  stroke: var(--border);
  stroke-width: 1;
  stroke-dasharray: 3 3;
  opacity: 0.5;
}

.member-chart-line {
  transition: opacity 0.2s ease;
}

.member-chart-dot {
  cursor: pointer;
  pointer-events: all;
  fill: var(--dot-color, var(--chart-teal));
  stroke: var(--border);
  stroke-width: 2;
  transition: r 0.15s ease, opacity 0.2s ease;
}

.member-chart-dot:hover {
  r: 8;
}

.member-chart-dot--passed {
  fill: var(--chart-green);
}

.member-chart-dot--failed {
  fill: var(--danger);
}

.member-chart-dot--pending {
  fill: var(--chart-teal);
}

.member-chart-tick {
  font-size: 0.7rem;
  fill: var(--text-muted);
}

.member-chart-tooltip {
  position: absolute;
  z-index: 10;
  padding: 0.5rem 0.75rem;
  min-width: 10rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  color: var(--text);
  pointer-events: none;
  transition: opacity 0.15s ease;
}

.member-chart-tooltip.hidden {
  visibility: hidden;
  opacity: 0;
}

.member-chart-tooltip-name {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
}

.member-chart-tooltip-detail {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.member-chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.member-chart-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.member-chart-legend-item::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--dot-color, var(--chart-teal));
}

.member-chart-modal {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  color: var(--text);
  padding: 0;
  max-width: 90vw;
  box-shadow: var(--shadow);
}

.member-chart-modal::backdrop {
  background: rgba(0, 0, 0, 0.5);
}

.member-chart-modal-inner {
  padding: 1.25rem;
  min-width: 280px;
}

.member-chart-modal-title {
  margin: 0 0 1rem 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.member-chart-modal-table-wrap {
  margin-bottom: 1rem;
  max-height: 40vh;
  overflow: auto;
}

.member-chart-scores-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.member-chart-scores-table th,
.member-chart-scores-table td {
  padding: 0.4rem 0.6rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.member-chart-scores-table th {
  color: var(--text-muted);
  font-weight: 500;
}

.member-chart-modal-close {
  margin-top: 0.5rem;
}

/* -----------------------------------------------------------------------------
   Tables
   ----------------------------------------------------------------------------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th {
  text-align: left;
  padding: 0.75rem 1rem;
  font-weight: 600;
  background: var(--table-header);
  color: #fff;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border);
}

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

tr:hover td {
  background: rgba(0, 0, 0, 0.02);
}

/* -----------------------------------------------------------------------------
   Pagination bar (below tables/lists)
   ----------------------------------------------------------------------------- */
.pagination-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  margin-top: 2rem;
  border-top: 1px solid var(--border);
  background: var(--bg-card);
}

.pagination-info {
  font-size: 0.9rem;
  color: var(--text-muted);
  min-width: 6rem;
  text-align: center;
}

.pagination-prev,
.pagination-next {
  min-width: 5rem;
}

.pagination-prev:disabled,
.pagination-next:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* -----------------------------------------------------------------------------
   Member profile cards
   ----------------------------------------------------------------------------- */
.member-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.member-profile-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
}

.member-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.member-card-name {
  font-weight: 600;
  font-size: 1rem;
  color: var(--text);
}

.member-card-body {
  padding: 0.75rem 1rem;
  flex: 1;
}

.member-card-row {
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.member-card-row:last-child {
  margin-bottom: 0;
}

.member-card-label {
  color: var(--text-muted);
  font-weight: 500;
  min-width: 4.5rem;
}

.member-card-actions {
  padding: 0.5rem 1rem;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn-icon {
  padding: 0.35rem 0.5rem;
  min-width: 2rem;
}

.view-profile-btn {
  font-size: 1rem;
  line-height: 1;
}

.member-profile-card-modal {
  min-width: 280px;
  max-width: 400px;
}

.member-profile-exam-history {
  border-top: 1px solid var(--border);
  padding: 0.75rem 1rem 0;
  margin-top: 0.5rem;
}

.member-card-section-title {
  margin: 0 0 0.5rem 0;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
}

.member-exam-history-table-wrap {
  overflow-x: auto;
  max-height: 12rem;
  overflow-y: auto;
}

.member-exam-history-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}

.member-exam-history-table th,
.member-exam-history-table td {
  padding: 0.35rem 0.5rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.member-exam-history-table th {
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
}

.member-exam-history-table td {
  color: var(--text);
}

.exam-result-badge {
  display: inline-block;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.75rem;
}

.exam-result-passed {
  background: var(--success);
  color: #fff;
}

.exam-result-failed {
  background: var(--danger);
  color: #fff;
}

.exam-history-link {
  color: var(--info);
  text-decoration: none;
}

.exam-history-link:hover {
  text-decoration: underline;
}

.required-if-minor {
  font-weight: normal;
  color: var(--text-muted);
  font-size: 0.85em;
}

/* -----------------------------------------------------------------------------
   Forms
   ----------------------------------------------------------------------------- */
.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.35rem;
  font-weight: 500;
  color: var(--text-muted);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: 0.95rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-input);
  color: var(--text);
  font-family: inherit;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
}

.form-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.form-row .form-group {
  flex: 1;
  min-width: 140px;
}

.import-csv-preview {
  margin-bottom: 0.5rem;
}

.import-csv-summary {
  font-weight: 500;
  margin: 0 0 0.5rem 0;
}

.import-csv-errors {
  margin: 0 0 0.75rem 0;
  padding-left: 1.25rem;
  font-size: 0.85rem;
  color: var(--danger);
  max-height: 12rem;
  overflow-y: auto;
}

.form-hint {
  margin: 0 0 0.5rem 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.belt-select-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.belt-select-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.5rem 0.75rem;
  text-align: left;
  font-size: 0.95rem;
  font-family: inherit;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  border: 2px solid transparent;
  border-radius: 4px;
  border-left-width: 4px;
  background: transparent;
  transition: border-color 0.15s, background 0.15s;
}

.belt-select-row:hover {
  opacity: 0.95;
}

.belt-selected-indicator {
  display: none;
  width: 1.25rem;
  font-weight: 700;
  font-size: 1rem;
  line-height: 1;
  color: inherit;
}

.belt-select-row.selected {
  box-shadow: 0 0 0 2px var(--primary);
}

.belt-select-row.selected .belt-selected-indicator {
  display: inline-block;
}

.belt-option-white {
  border-left-color: #b0b0b0;
  background: rgba(240, 240, 240, 0.45);
}

.belt-option-white.selected {
  border-left-color: #666;
  background: #e8e8e8;
}

.belt-option-yellow {
  border-left-color: #ffeb3b;
  background: rgba(255, 235, 59, 0.3);
}

.belt-option-yellow.selected {
  border-left-color: #f9a825;
  background: #ffeb3b;
  color: #333;
}

.belt-option-orange {
  border-left-color: #ff9800;
  background: rgba(255, 152, 0, 0.25);
}

.belt-option-orange.selected {
  border-left-color: #e65100;
  background: #ffb74d;
  color: #333;
}

.belt-option-green {
  border-left-color: #4caf50;
  background: rgba(76, 175, 80, 0.25);
}

.belt-option-green.selected {
  border-left-color: #2e7d32;
  background: #81c784;
  color: #1b5e20;
}

.belt-option-blue {
  border-left-color: #2196f3;
  background: rgba(33, 150, 243, 0.2);
}

.belt-option-blue.selected {
  border-left-color: #1565c0;
  background: #64b5f6;
  color: #0d47a1;
}

.belt-option-brown {
  border-left-color: #795548;
  background: rgba(121, 85, 72, 0.25);
}

.belt-option-brown.selected {
  border-left-color: #4e342e;
  background: #a1887f;
  color: #fff;
}

.belt-option-black {
  border-left-color: #141414;
  background: rgba(20, 20, 20, 0.4);
}

.belt-option-black.selected {
  border-left-color: #0a0a0a;
  background: #444444;
  color: #fff;
}

/* -----------------------------------------------------------------------------
   Modal
   ----------------------------------------------------------------------------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(20, 20, 20, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow: auto;
}

.modal-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  margin: 0;
  font-size: 1.1rem;
}

.modal-close {
  padding: 0.25rem;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.25rem;
  line-height: 1;
}

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

.modal-body {
  padding: 1.25rem;
}

.modal-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

/* -----------------------------------------------------------------------------
   Toasts
   ----------------------------------------------------------------------------- */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-width: 360px;
}

.toast {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  box-shadow: var(--shadow);
  animation: toast-in 0.2s ease;
}

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

.toast-success {
  background: var(--success);
  color: #fff;
}

.toast-error {
  background: var(--danger);
  color: #fff;
}

.toast-info {
  background: var(--primary);
  color: #fff;
}

/* -----------------------------------------------------------------------------
   Belt badges
   ----------------------------------------------------------------------------- */
.belt-badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
}

.belt-none { background: var(--primary); color: #fff; }
.belt-white { background: #fff; color: #333; border: 1px solid #b0b0b0; }
.belt-yellow { background: #ffeb3b; color: #333; }
.belt-orange { background: #ff9800; color: #fff; }
.belt-green { background: #4caf50; color: #fff; }
.belt-blue { background: #2196f3; color: #fff; }
.belt-brown { background: #795548; color: #fff; }
.belt-black { background: #141414; color: #fff; }

.gender-badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 600;
}

.gender-male {
  background: #2196f3;
  color: #fff;
}

.gender-female {
  background: #e91e8c;
  color: #fff;
}

/* -----------------------------------------------------------------------------
   Members / toolbar
   ----------------------------------------------------------------------------- */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 1rem;
}

.toolbar-filters {
  flex-direction: column;
  align-items: stretch;
  gap: 0.75rem;
}

.toolbar-filters .filter-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
}

.toolbar-filters .filter-row label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
}

.filter-input {
  padding: 0.4rem 0.6rem;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-input);
  color: var(--text);
  min-width: 0;
}

.filter-input:focus {
  outline: none;
  border-color: var(--primary);
}

#filter-birth-year { width: 5rem; }
#filter-belt { min-width: 6rem; }
#filter-weight-from, #filter-weight-to { width: 4.5rem; }
#filter-gender { min-width: 5.5rem; }

.toolbar-filters .toolbar-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.toolbar-filter-label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
}

.filter-input-toolbar {
  min-width: 8rem;
}

.filter-toggle-btn {
  margin-left: auto;
}

.filter-toggle-btn .filter-toggle-icon {
  display: inline-block;
  transition: transform 0.2s;
}

.filter-panel {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.25s ease, opacity 0.2s ease;
}

.filter-panel.filters-expanded {
  max-height: 220px;
  opacity: 1;
}

.filter-panel .filter-row {
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
  margin-top: 0.25rem;
}

.search-input {
  padding: 0.5rem 0.75rem;
  font-size: 0.95rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-input);
  color: var(--text);
  min-width: 200px;
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
}

/* -----------------------------------------------------------------------------
   Exams
   ----------------------------------------------------------------------------- */
.exam-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.exam-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.exam-card h4 {
  margin: 0;
  font-size: 1rem;
}

.exam-card-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.exam-card-actions {
  display: flex;
  gap: 0.5rem;
}

/* -----------------------------------------------------------------------------
   Group detail (members in group)
   ----------------------------------------------------------------------------- */
.group-detail-header {
  margin-bottom: 1.25rem;
}

.back-link {
  display: inline-block;
  font-size: 0.9rem;
  color: var(--primary);
  text-decoration: none;
  margin-bottom: 0.5rem;
}

.back-link:hover {
  text-decoration: underline;
}

.group-detail-title {
  margin: 0 0 0.35rem 0;
  font-size: 1.25rem;
}

.group-detail-description {
  margin: 0 0 0.25rem 0;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.group-detail-meta {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.group-name-link {
  color: var(--primary);
  font-weight: 500;
  text-decoration: none;
}

.group-name-link:hover {
  text-decoration: underline;
}

/* -----------------------------------------------------------------------------
   Exam detail: belt tabs + grading
   ----------------------------------------------------------------------------- */
.belt-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.belt-tab {
  padding: 0.6rem 1rem;
  font-size: 0.9rem;
  font-weight: 500;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-family: inherit;
  margin-bottom: -1px;
}

.belt-tab:hover {
  color: var(--text);
}

.belt-tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* 6 kyu view groups: number of groups + group tabs (UI only, no DB) */
.exam-groups-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.5rem;
  margin-bottom: 1rem;
  padding: 0.75rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.exam-groups-toolbar label {
  font-weight: 500;
  color: var(--text);
}

.exam-groups-toolbar #num-groups-select {
  padding: 0.4rem 0.6rem;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-input);
  color: var(--text);
  min-width: 4rem;
}

.group-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.group-tab {
  padding: 0.4rem 0.75rem;
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-input);
  color: var(--text);
  cursor: pointer;
}

.group-tab:hover {
  background: var(--bg-card);
  border-color: var(--primary);
}

.group-tab.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* Coach assignment section */
.coach-assignment-section {
  margin-bottom: 1.5rem;
  padding: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.coach-assignment-header {
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
}

.coach-assignment-header .text-muted {
  color: var(--text-muted);
  font-weight: normal;
}

.coach-warning {
  color: var(--danger);
  font-size: 0.9rem;
  margin-left: 0.5rem;
}

.tech-cell-readonly .grade-select,
.tech-cell-readonly .score-input,
.tech-cell-readonly .pass-fail-select {
  opacity: 0.8;
  cursor: not-allowed;
  background: var(--bg-input);
}

.assigned-coaches-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.assigned-coach-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.6rem;
  background: var(--primary);
  color: #fff;
  border-radius: 20px;
  font-size: 0.85rem;
}

.assigned-coach-badge .remove-coach-btn {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  padding: 0;
  margin-left: 0.25rem;
}

.assigned-coach-badge .remove-coach-btn:hover {
  color: #fff;
}

.coach-assignment-controls {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.coach-assignment-controls select {
  padding: 0.4rem 0.6rem;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-input);
  color: var(--text);
}

/* Admin column on coaches page */
.admin-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.9rem;
}
.admin-toggle input[type="checkbox"] {
  cursor: pointer;
}
.admin-badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius);
  font-size: 0.85rem;
}
.admin-badge--yes {
  background: var(--primary);
  color: #fff;
}
.admin-badge--no {
  color: var(--muted);
}

/* Average score badge in multi-coach mode */
.avg-badge {
  display: block;
  font-size: 0.75rem;
  color: var(--primary);
  margin-top: 0.25rem;
  cursor: help;
}

.tech-cell {
  position: relative;
}

.tech-cell[title]:hover::after {
  content: attr(title);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.5rem 0.75rem;
  background: var(--table-header);
  color: #fff;
  font-size: 0.8rem;
  border-radius: 4px;
  white-space: nowrap;
  z-index: 100;
  pointer-events: none;
}

.techniques-header {
  margin-bottom: 1rem;
  padding: 0.75rem 1rem;
  background: var(--table-header);
  color: #fff;
  border-radius: var(--radius);
  font-size: 0.9rem;
}

.pass-requirements-info {
  margin-bottom: 1rem;
  padding: 0.75rem 1rem;
  background: rgba(59, 130, 246, 0.08);
  color: var(--info);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: var(--radius);
  font-size: 0.9rem;
}

.grading-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  width: 100%;
}

.grading-table-wrap--block {
  margin-top: 0;
  border-radius: 0 0 var(--radius) var(--radius);
}

/* Per-candidate blocks (4–1 kyu with extra techniques): one table per member, clearly separated */
.candidate-grading-block {
  margin-bottom: 2rem;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  width: 100%;
  overflow: hidden;
}

.candidate-block-header {
  padding: 0.6rem 1rem;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text);
  background: var(--bg-input);
  border-bottom: 1px solid var(--border);
  border-radius: var(--radius) var(--radius) 0 0;
}

.candidate-block-header .member-code {
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.candidate-extra-selector {
  margin-bottom: 1rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
}

.candidate-extra-name {
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.candidate-extra-selector .extra-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.candidate-extra-selector .extra-row label {
  min-width: 12rem;
  font-weight: 500;
  color: var(--text);
}

.candidate-extra-selector .extra-tech-select {
  padding: 0.35rem 0.5rem;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-input);
  color: var(--text);
  min-width: 10rem;
}

.candidate-extra-selector .save-extra-btn {
  margin-top: 0.75rem;
}

.grading-table {
  width: 100%;
  min-width: 100%;
  table-layout: auto;
}

.grading-table th {
  min-width: 100px;
}

.grading-table th.tech-col {
  min-width: 115px;
  text-align: center;
  white-space: nowrap;
}

.grading-table th.total-col {
  min-width: 70px;
  text-align: center;
  font-weight: 700;
}

.grading-table td.total-cell {
  text-align: center;
  font-size: 1.1rem;
  min-width: 70px;
}

.grading-table td.tech-cell {
  padding: 0.4rem 0.35rem;
  text-align: center;
}

.grading-table .remove-candidate-btn {
  margin-top: 0.5rem;
}

.grading-table input.score-input {
  width: 3rem;
  min-width: 3rem;
  padding: 0.4rem 0.35rem;
  text-align: center;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg-input);
  color: var(--text);
}

/* Hide number input spinner arrows */
.grading-table input.score-input::-webkit-outer-spin-button,
.grading-table input.score-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.grading-table input.score-input[type=number] {
  -moz-appearance: textfield;
}

.grading-table input.score-input:focus {
  outline: none;
  border-color: var(--primary);
}

.grading-table input.score-input.score-below-min {
  border-color: var(--danger);
  color: var(--danger);
  font-weight: 600;
}

/* 6 kyu letter grades: dropdown shows letter + color (G=green, P=yellow, N=red) */
.grading-table .grade-select {
  min-width: 3rem;
  padding: 0.4rem 0.5rem;
  font-size: 1rem;
  font-weight: 700;
  border: 2px solid transparent;
  border-radius: 6px;
  cursor: pointer;
  text-align: center;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-color: var(--bg-input);
  color: var(--text);
}

.grading-table .tech-cell .grade-select.grade-g,
.grade-select.grade-g {
  background-color: var(--success) !important;
  color: #fff !important;
  border-color: var(--success);
}

.grading-table .tech-cell .grade-select.grade-p,
.grade-select.grade-p {
  background-color: var(--warning) !important;
  color: #111827 !important;
  border-color: var(--warning);
}

.grading-table .tech-cell .grade-select.grade-n,
.grade-select.grade-n {
  background-color: var(--danger) !important;
  color: #fff !important;
  border-color: var(--danger);
}

.grading-table .grade-select:focus {
  outline: none;
  box-shadow: 0 0 0 2px var(--primary);
}

/* Colored options when dropdown is open (where supported) */
.grading-table .grade-select option[value="G"] {
  background: var(--success);
  color: #fff;
}

.grading-table .grade-select option[value="P"] {
  background: var(--warning);
  color: #111827;
}

.grading-table .grade-select option[value="N"] {
  background: var(--danger);
  color: #fff;
}

.grading-table .pass-fail-select {
  min-width: 4.5rem;
  padding: 0.4rem 0.5rem;
  font-size: 0.9rem;
  border-radius: var(--radius);
  cursor: pointer;
  border: 1px solid var(--border);
}

.grading-table .pass-fail-select:focus {
  outline: none;
  box-shadow: 0 0 0 2px var(--primary);
}

.tech-cell-readonly .pass-fail-select {
  opacity: 0.8;
  cursor: not-allowed;
}

.status-cell {
  font-weight: 600;
  min-width: 80px;
}

.status-passed,
.status-pass {
  color: var(--success);
}

.status-failed,
.status-fail {
  color: var(--danger);
}

.status-pending,
.status-na {
  color: var(--text-muted);
}

.candidates-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.candidates-toolbar select {
  padding: 0.5rem 0.75rem;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-input);
  color: var(--text);
  min-width: 200px;
}

/* -----------------------------------------------------------------------------
   Loading spinner
   ----------------------------------------------------------------------------- */
.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

.loading-overlay {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 2rem;
}

.loading-overlay-message {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* -----------------------------------------------------------------------------
   Empty state
   ----------------------------------------------------------------------------- */
.empty-state {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
}

/* -----------------------------------------------------------------------------
   Mobile / responsive
   ----------------------------------------------------------------------------- */
/* Hamburger button: visible only on small screens */
.topbar-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.1);
  color: var(--sidebar-text);
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.15s, color 0.15s;
}
.topbar-menu-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}
.topbar-menu-icon {
  font-size: 1.25rem;
  line-height: 1;
}

/* Sidebar backdrop (mobile) */
.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 800;
  transition: opacity 0.2s ease;
}
.sidebar-backdrop.hidden {
  display: none !important;
}

@media (max-width: 768px) {
  .topbar-menu-btn {
    display: flex;
  }

  .sidebar-backdrop:not(.hidden) {
    display: block;
  }

  #app-shell {
    position: relative;
  }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 900;
    width: min(280px, 85vw);
    min-width: 0;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    box-shadow: none;
  }

  #app-shell.mobile-sidebar-open .sidebar {
    transform: translateX(0);
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.2);
  }

  .sidebar--closed {
    width: min(280px, 85vw);
    min-width: 0;
  }

  .sidebar--closed .sidebar-title,
  .sidebar--closed .sidebar-logo,
  .sidebar--closed .sidebar-nav {
    opacity: 1;
    overflow: visible;
    pointer-events: auto;
    width: auto;
    padding: inherit;
    margin: inherit;
  }

  .sidebar-toggle {
    display: none;
  }

  .sidebar-header {
    padding: 1rem;
    padding-top: max(1rem, env(safe-area-inset-top));
  }

  .sidebar-nav {
    padding-bottom: max(1rem, env(safe-area-inset-bottom));
  }

  .nav-link {
    padding: 0.75rem 1rem;
    min-height: 44px;
    text-align: left;
  }

  .nav-link-child {
    min-height: 44px;
  }

  .topbar {
    flex-direction: row;
    align-items: center;
    padding: 0.75rem 1rem;
    padding-left: max(1rem, env(safe-area-inset-left));
    gap: 0.5rem;
  }

  .topbar h2 {
    font-size: 1.1rem;
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .main-content {
    padding: 1rem;
    padding-bottom: max(1rem, env(safe-area-inset-bottom));
  }

  .table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 0 -1rem;
    padding: 0 1rem;
  }

  .table-wrap table {
    min-width: 600px;
  }

  th, td {
    padding: 0.5rem 0.65rem;
  }

  .toolbar,
  .toolbar-filters {
    gap: 0.5rem;
  }

  .toolbar-actions {
    flex-wrap: wrap;
  }

  .search-input {
    min-width: 0;
    width: 100%;
  }

  .btn {
    min-height: 44px;
    padding: 0.5rem 0.85rem;
  }

  .modal-overlay {
    padding: 0.5rem;
    align-items: flex-end;
  }

  .modal {
    max-width: 100%;
    max-height: 92vh;
    max-height: calc(100vh - 2rem);
    border-radius: var(--radius) var(--radius) 0 0;
  }

  .toast-container {
    left: 0.75rem;
    right: 0.75rem;
    bottom: max(1.5rem, env(safe-area-inset-bottom));
    max-width: none;
  }

  .login-main,
  .login-card {
    padding: 1.25rem;
  }

  .line-chart-top-row {
    grid-template-columns: 1fr;
  }

  .line-chart-rating-panel {
    order: -1;
  }

  .line-chart-view {
    min-height: 0;
  }

  .line-chart-desc {
    font-size: 0.8rem;
  }

  .line-chart-filters {
    flex-wrap: wrap;
  }

  .line-chart-filter-btn {
    min-height: 44px;
  }

  .lang-switcher,
  .user-profile-btn {
    min-height: 44px;
    min-width: 44px;
    padding: 0.5rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 15px;
  }

  .topbar h2 {
    font-size: 1rem;
  }

  .main-content {
    padding: 0.75rem;
  }

  .exam-card {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
  }

  .exam-card-actions {
    flex-direction: row;
    flex-wrap: wrap;
  }
}