/* ============================================================
   ARCM — Design System
   Dark modern theme inspired by the Puzzle UI reference
   ============================================================ */

:root {
  /* Color palette */
  --color-bg-base:        #0a0c1a;
  --color-bg-surface:     #0e1128;
  --color-bg-elevated:    #131830;
  --color-bg-card:        #161c38;
  --color-bg-input:       #1a2040;
  --color-border:         rgba(255,255,255,0.07);
  --color-border-focus:   rgba(79,209,149,0.5);

  /* Brand accent — green */
  --color-accent:         #4fd195;
  --color-accent-dim:     rgba(79,209,149,0.12);
  --color-accent-glow:    rgba(79,209,149,0.25);

  /* Purple accent */
  --color-purple:         #8b7cf8;
  --color-purple-dim:     rgba(139,124,248,0.12);

  /* Text */
  --color-text-primary:   #e8eaf6;
  --color-text-secondary: #8892b0;
  --color-text-muted:     #4a5568;

  /* Status */
  --color-success:        #4fd195;
  --color-warning:        #f6c90e;
  --color-danger:         #fc5c7d;
  --color-info:           #63b3ed;

  /* Layout */
  --sidebar-width:        240px;
  --sidebar-collapsed:    64px;
  --topbar-height:        60px;

  /* Typography */
  --font-sans:            'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:            'JetBrains Mono', 'Fira Code', monospace;

  /* Radii */
  --radius-sm:            6px;
  --radius-md:            10px;
  --radius-lg:            16px;
  --radius-xl:            24px;

  /* Shadows */
  --shadow-card:          0 4px 24px rgba(0,0,0,0.4);
  --shadow-glow-green:    0 0 20px rgba(79,209,149,0.15);
  --shadow-glow-purple:   0 0 20px rgba(139,124,248,0.15);
}

/* ---- Reset & base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 15px; }

body {
  font-family: var(--font-sans);
  background: var(--color-bg-base);
  color: var(--color-text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ============================================================
   AUTH LAYOUT
   ============================================================ */

.auth-layout {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  position: relative;
  overflow: hidden;
}

.auth-bg {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 0;
  pointer-events: none;
}

.auth-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
}

.auth-orb--1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #4fd195 0%, transparent 70%);
  top: -200px;
  right: -100px;
}

.auth-orb--2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, #8b7cf8 0%, transparent 70%);
  bottom: -150px;
  left: -100px;
}

.auth-container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 420px;
  padding: 1.5rem;
}

.auth-brand {
  text-align: center;
  margin-bottom: 2rem;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-icon {
  font-size: 1.8rem;
  background: linear-gradient(135deg, var(--color-accent), var(--color-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.brand-name {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-text-primary);
}

.brand-tagline {
  color: var(--color-text-muted);
  font-size: 0.8rem;
  margin-top: 0.3rem;
  letter-spacing: 0.04em;
}

.auth-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-card);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.auth-card-header {
  margin-bottom: 1.5rem;
}

.auth-title {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.auth-subtitle {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

.auth-form { display: flex; flex-direction: column; gap: 1.25rem; }

/* ============================================================
   APP LAYOUT
   ============================================================ */

.app-layout {
  display: flex;
  min-height: 100vh;
}

/* ---- Sidebar ---- */
.sidebar {
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--color-bg-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  transition: transform 0.25s ease, width 0.25s ease;
}

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

.sidebar-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.sidebar-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-text-secondary);
  border-radius: 2px;
}

.sidebar-nav {
  flex: 1;
  min-height: 0;
  padding: 1rem 0.75rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

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

.nav-section-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0 0.5rem;
  margin-bottom: 0.25rem;
  color: inherit;
}

.nav-section-toggle:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.nav-chevron {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  color: var(--color-text-muted);
  transition: transform 0.2s ease;
}

.nav-section-toggle[aria-expanded="true"] .nav-chevron {
  transform: rotate(180deg);
}

.nav-section-items {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.25s ease;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.nav-section-items.is-expanded {
  max-height: 400px;
}

.nav-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 0 0.5rem;
  margin-bottom: 0.25rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.15s ease;
  text-decoration: none;
}

.nav-item:hover {
  background: var(--color-accent-dim);
  color: var(--color-accent);
  text-decoration: none;
}

.nav-item.active {
  background: var(--color-accent-dim);
  color: var(--color-accent);
  box-shadow: inset 2px 0 0 var(--color-accent);
}

.nav-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.sidebar-footer {
  padding: 1rem;
  border-top: 1px solid var(--color-border);
}

/* ---- Sidebar collapse button ---- */
.sidebar-collapse-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--color-text-secondary);
  flex-shrink: 0;
  transition: background 0.15s ease, color 0.15s ease;
}

.sidebar-collapse-btn:hover {
  background: var(--color-accent-dim);
  color: var(--color-accent);
}

.sidebar-collapse-btn svg {
  width: 14px;
  height: 14px;
  transition: transform 0.25s ease;
}

/* ---- Sidebar collapsed state ---- */
/* Must appear after .nav-section-items.is-expanded so max-height: none wins */
.sidebar--collapsed {
  width: var(--sidebar-collapsed);
}

/* Hide text labels; keep icons visible */
.sidebar--collapsed .brand-name,
.sidebar--collapsed .nav-label,
.sidebar--collapsed .nav-chevron,
.sidebar--collapsed .nav-item span,
.sidebar--collapsed .user-info,
.sidebar--collapsed .sidebar-footer .btn {
  display: none;
}

/* Centre icons in the collapsed nav items */
.sidebar--collapsed .nav-item {
  justify-content: center;
  padding: 0.6rem;
}

/* Flip the collapse button chevron when sidebar is collapsed */
.sidebar--collapsed .sidebar-collapse-btn svg {
  transform: rotate(180deg);
}

/* Centre user avatar when collapsed */
.sidebar--collapsed .user-card {
  justify-content: center;
}

/* Hide the section toggle row (no labels to click) */
.sidebar--collapsed .nav-section-toggle {
  display: none;
}

/* All nav section items always visible in collapsed rail.
   Both selectors needed: .is-expanded has equal specificity and source order
   determines which wins. Including .is-expanded variant makes this robust
   regardless of insertion point. */
.sidebar--collapsed .nav-section-items,
.sidebar--collapsed .nav-section-items.is-expanded {
  max-height: none;
}

/* Show icon-only sign-out button when collapsed; hide expanded text button */
.sidebar-collapse-logout-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-secondary);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  transition: background 0.15s ease, color 0.15s ease;
}

.sidebar-collapse-logout-btn:hover {
  background: var(--color-accent-dim);
  color: var(--color-accent);
}

.sidebar--collapsed .sidebar-collapse-logout-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

/* ---- Main content ---- */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left 0.25s ease;
}

.main-content--sidebar-collapsed {
  margin-left: var(--sidebar-collapsed);
}

/* ---- Topbar ---- */
.topbar {
  height: var(--topbar-height);
  background: var(--color-bg-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-left { display: flex; align-items: center; gap: 1rem; }

.page-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.sidebar-toggle-mobile {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: 4px;
}

/* ---- Page content ---- */
.page-content {
  flex: 1;
  padding: 1.5rem;
}

/* ============================================================
   COMPONENTS
   ============================================================ */

/* ---- Cards ---- */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.card--wide { grid-column: span 2; }

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

.card-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.card-body { padding: 1.25rem; }
.card-body--flush { padding: 0; }

/* ---- Stats ---- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.stat-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

.stat-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.stat-icon--blue  { background: rgba(99,179,237,0.12); color: var(--color-info); }
.stat-icon--purple { background: var(--color-purple-dim); color: var(--color-purple); }
.stat-icon--green { background: var(--color-accent-dim); color: var(--color-accent); }

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-text-primary);
}

.stat-value--green { color: var(--color-accent); }

.stat-meta {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 0.35rem;
}

/* ---- Content grid ---- */
.content-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 1rem;
}

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

.activity-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.825rem;
}

.activity-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  margin-top: 0.35rem;
  flex-shrink: 0;
}

.activity-content { flex: 1; color: var(--color-text-secondary); }
.activity-action { font-weight: 600; color: var(--color-text-primary); }
.activity-user { color: var(--color-accent); }
.activity-time { font-size: 0.75rem; color: var(--color-text-muted); white-space: nowrap; }

/* ---- Quick actions ---- */
.quick-actions { display: flex; flex-direction: column; gap: 0.5rem; }

.quick-action-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.15s ease;
  text-decoration: none;
}

.quick-action-btn:hover {
  background: var(--color-accent-dim);
  border-color: var(--color-accent);
  color: var(--color-accent);
  text-decoration: none;
}

/* ---- Forms ---- */
.form { display: flex; flex-direction: column; gap: 1rem; }

.form-group { display: flex; flex-direction: column; gap: 0.4rem; }

.form-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.form-control,
.form-input,
.form-select {
  background: var(--color-bg-input);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.65rem 0.875rem;
  color: var(--color-text-primary);
  font-size: 0.875rem;
  font-family: var(--font-sans);
  width: 100%;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  -webkit-appearance: none;
}

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

.form-control:focus,
.form-input:focus,
.form-select:focus {
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.form-select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238892b0' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.875rem center;
  padding-right: 2.5rem;
}

.input-wrapper { position: relative; }

.input-toggle-password {
  position: absolute;
  right: 0.875rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-weight: 500;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
  white-space: nowrap;
  font-size: 0.875rem;
  padding: 0.6rem 1.25rem;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, #38b278 100%);
  color: #0a0c1a;
  font-weight: 600;
}

.btn--primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 4px 15px rgba(79,209,149,0.35);
  text-decoration: none;
  color: #0a0c1a;
}

.btn--ghost {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.btn--ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  text-decoration: none;
}

.btn--danger {
  background: rgba(252,92,125,0.12);
  border: 1px solid rgba(252,92,125,0.35);
  color: var(--color-danger);
}

.btn--danger:hover {
  background: rgba(252,92,125,0.22);
  border-color: var(--color-danger);
  box-shadow: 0 0 12px rgba(252,92,125,0.25);
  text-decoration: none;
  color: var(--color-danger);
}

.btn--lg  { padding: 0.8rem 1.5rem; font-size: 0.95rem; }
.btn--sm  { padding: 0.4rem 0.875rem; font-size: 0.8rem; }
.btn--xs  { padding: 0.25rem 0.6rem; font-size: 0.75rem; border-radius: var(--radius-sm); }
.btn--full { width: 100%; }

/* ---- Alerts ---- */
.alert {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.alert--error {
  background: rgba(252,92,125,0.1);
  border: 1px solid rgba(252,92,125,0.3);
  color: var(--color-danger);
}

.alert--success {
  background: rgba(79,209,149,0.1);
  border: 1px solid rgba(79,209,149,0.3);
  color: var(--color-success);
}

.alert--warning {
  background: rgba(246,201,14,0.1);
  border: 1px solid rgba(246,201,14,0.3);
  color: var(--color-warning);
}

.alert-dismiss {
  margin-left: auto;
  background: none;
  border: none;
  cursor: pointer;
  color: inherit;
  opacity: 0.7;
  font-size: 1rem;
  line-height: 1;
  padding: 0 0 0 0.5rem;
}

.alert-dismiss:hover { opacity: 1; }

/* ---- Badges ---- */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.15rem 0.5rem;
  border-radius: 99px;
  font-size: 0.7rem;
  font-weight: 600;
  background: var(--color-bg-elevated);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.role-badge {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: 99px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.role-badge--superadmin {
  background: var(--color-purple-dim);
  color: var(--color-purple);
  border: 1px solid rgba(139,124,248,0.3);
}

.role-badge--admin {
  background: rgba(99,179,237,0.1);
  color: var(--color-info);
  border: 1px solid rgba(99,179,237,0.3);
}

.role-badge--user {
  background: var(--color-bg-elevated);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.role-badge--callsign {
  background: var(--color-purple-dim);
  color: var(--color-purple);
  border: 1px solid rgba(139,124,248,0.3);
}

.required { color: var(--color-danger); }

.status-pill {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: 99px;
  font-size: 0.7rem;
  font-weight: 600;
}

.status-pill--active {
  background: var(--color-accent-dim);
  color: var(--color-accent);
}

.status-pill--inactive {
  background: rgba(252,92,125,0.1);
  color: var(--color-danger);
}

.status-pill--member-active {
  background: var(--color-accent-dim);
  color: var(--color-accent);
  border: 1px solid rgba(79,209,149,0.3);
}

.status-pill--member-lapsed {
  background: rgba(252,92,125,0.08);
  color: var(--color-danger);
  border: 1px solid rgba(252,92,125,0.25);
}

.status-pill--arrl-active {
  background: rgba(99,179,237,0.12);
  color: var(--color-info);
  border: 1px solid rgba(99,179,237,0.3);
}

.status-pill--arrl-lapsed {
  background: rgba(246,201,14,0.1);
  color: var(--color-warning);
  border: 1px solid rgba(246,201,14,0.3);
}

.row--lapsed td:not(:last-child) {
  opacity: 0.55;
}

/* ---- Tables ---- */
.table-wrapper { overflow-x: auto; }

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.data-table th {
  padding: 0.75rem 1rem;
  text-align: left;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  background: var(--color-bg-elevated);
  border-bottom: 1px solid var(--color-border);
}

.data-table td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-primary);
  vertical-align: middle;
}

.data-table tbody tr:hover { background: rgba(255,255,255,0.02); }
.data-table tbody tr:last-child td { border-bottom: none; }

.table-user {
  display: flex;
  align-items: center;
  gap: 0.625rem;
}

/* ---- User card / avatar ---- */
.user-card {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem;
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-accent), var(--color-purple));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: #0a0c1a;
  flex-shrink: 0;
  text-transform: uppercase;
}

.user-avatar--sm { width: 28px; height: 28px; font-size: 0.65rem; }

.user-info { display: flex; flex-direction: column; min-width: 0; }

.user-name {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---- Action tags ---- */
.action-tag {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  font-weight: 600;
  font-family: var(--font-mono);
  background: var(--color-bg-elevated);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

/* ---- Admin page ---- */
.admin-page { display: flex; flex-direction: column; gap: 1rem; }

/* ---- Dashboard ---- */
.dashboard { display: flex; flex-direction: column; gap: 1.5rem; }

/* ---- Error page ---- */
.error-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  gap: 1rem;
  text-align: center;
}

.error-code {
  font-size: 5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-accent), var(--color-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.error-title {
  font-size: 1.5rem;
  font-weight: 600;
}

.error-message {
  color: var(--color-text-secondary);
  max-width: 400px;
}

/* ---- Utility ---- */
.text-muted  { color: var(--color-text-muted); }
.text-mono   { font-family: var(--font-mono); font-size: 0.8em; }
.empty-state { color: var(--color-text-muted); font-size: 0.875rem; text-align: center; padding: 2rem; }

/* ---- Pagination ---- */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 1rem 0;
}

.pagination__info {
  font-size: 0.825rem;
  color: var(--color-text-muted);
}

/* ---- Settings form ---- */
.settings-form {
  max-width: 600px;
}

.form-help {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

.form-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* ---- Form section grouping ---- */
.form-section {
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-section:first-child {
  border-top: none;
  padding-top: 0;
}

.form-section-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 1024px) {
  .content-grid {
    grid-template-columns: 1fr;
  }
  .card--wide { grid-column: span 1; }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.is-open {
    transform: translateX(0);
    box-shadow: 4px 0 40px rgba(0,0,0,0.5);
  }

  .main-content {
    margin-left: 0;
  }

  .sidebar-toggle-mobile {
    display: flex;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Collapse button hidden on mobile; collapsed margin must not apply */
  .sidebar-collapse-btn {
    display: none;
  }

  .main-content--sidebar-collapsed {
    margin-left: 0;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .auth-card { padding: 1.5rem; }
}

/* ---- Responsive column hiding for member roster table ---- */
@media (max-width: 1200px) {
  .col--secondary { display: none; }
}

@media (max-width: 1440px) {
  .col--detail { display: none; }
}