/* ═══════════════════════════════════════════════════════════════
   Multi-User Todo App — Light Mode Design System
   Font: Inter (Google Fonts)
═══════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ── CSS Variables ──────────────────────────────────────────── */
:root {
  --primary:       #6366f1;
  --primary-dark:  #4f46e5;
  --primary-light: #e0e7ff;
  --secondary:     #8b5cf6;
  --accent:        #f59e0b;

  --bg:            #f8faff;
  --bg-card:       #ffffff;
  --bg-hover:      #f1f5fe;
  --border:        #e2e8f8;
  --border-focus:  #6366f1;

  --text-primary:  #1e1b4b;
  --text-secondary:#64748b;
  --text-muted:    #94a3b8;

  --success:       #10b981;
  --success-bg:    #d1fae5;
  --warning:       #f59e0b;
  --warning-bg:    #fef3c7;
  --danger:        #ef4444;
  --danger-bg:     #fee2e2;

  --priority-high:   #ef4444;
  --priority-medium: #f59e0b;
  --priority-low:    #10b981;

  --shadow-sm:  0 1px 3px rgba(99,102,241,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:  0 4px 16px rgba(99,102,241,0.12), 0 2px 6px rgba(0,0,0,0.06);
  --shadow-lg:  0 10px 40px rgba(99,102,241,0.16), 0 4px 12px rgba(0,0,0,0.08);
  --shadow-xl:  0 20px 60px rgba(99,102,241,0.2);

  --radius-sm:  8px;
  --radius-md:  14px;
  --radius-lg:  20px;
  --radius-xl:  28px;

  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset & Base ───────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Background ─────────────────────────────────────────────── */
.page-bg {
  min-height: 100vh;
  background:
    radial-gradient(ellipse at 20% 10%, rgba(99,102,241,0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 80%, rgba(139,92,246,0.10) 0%, transparent 60%),
    linear-gradient(135deg, #f0f4ff 0%, #faf8ff 50%, #f0f9ff 100%);
}

/* ── Scrollbar ──────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary-light); }

/* ══════════════════════════════════════════════════════════════
   AUTH PAGE — Login / Register
══════════════════════════════════════════════════════════════ */

.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
}

.auth-container {
  width: 100%;
  max-width: 420px;
}

.auth-logo {
  text-align: center;
  margin-bottom: 32px;
}
.auth-logo .logo-icon {
  width: 64px; height: 64px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-lg);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 28px;
  box-shadow: 0 8px 24px rgba(99,102,241,0.35);
  margin-bottom: 12px;
  animation: logoFloat 3s ease-in-out infinite;
}
@keyframes logoFloat {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-6px); }
}
.auth-logo h1 { font-size: 26px; font-weight: 800; color: var(--text-primary); letter-spacing: -0.5px; }
.auth-logo p { color: var(--text-secondary); font-size: 14px; margin-top: 4px; }

.auth-card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(99,102,241,0.1);
  animation: slideUp 0.4s ease;
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.auth-tabs {
  display: flex;
  background: var(--bg);
  border-radius: var(--radius-md);
  padding: 4px;
  margin-bottom: 28px;
  border: 1px solid var(--border);
}
.auth-tab {
  flex: 1; padding: 10px; border: none; background: transparent;
  border-radius: 10px; font-size: 14px; font-weight: 600;
  color: var(--text-secondary); cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}
.auth-tab.active {
  background: var(--bg-card); color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.form-group { margin-bottom: 18px; }
.form-group label {
  display: block; font-size: 13px; font-weight: 600;
  color: var(--text-secondary); margin-bottom: 7px;
  text-transform: uppercase; letter-spacing: 0.5px;
}
.form-group .input-wrap { position: relative; }
.form-group .input-icon {
  position: absolute; left: 14px; top: 50%; transform: translateY(-50%);
  font-size: 16px; color: var(--text-muted); pointer-events: none;
}
.form-group input {
  width: 100%; padding: 12px 14px 12px 42px;
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  font-size: 15px; font-family: inherit; background: var(--bg);
  color: var(--text-primary); transition: all var(--transition); outline: none;
}
.form-group input:focus {
  border-color: var(--primary); background: white;
  box-shadow: 0 0 0 4px rgba(99,102,241,0.1);
}
.form-group input::placeholder { color: var(--text-muted); }

.btn-primary {
  width: 100%; padding: 13px; border: none; border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white; font-size: 15px; font-weight: 700; font-family: inherit;
  cursor: pointer; transition: all var(--transition);
  box-shadow: 0 4px 16px rgba(99,102,241,0.35); letter-spacing: 0.3px;
  position: relative; overflow: hidden;
}
.btn-primary::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
  opacity: 0; transition: opacity var(--transition);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 24px rgba(99,102,241,0.45); }
.btn-primary:hover::after { opacity: 1; }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

.auth-error {
  background: var(--danger-bg); color: var(--danger);
  border: 1px solid rgba(239,68,68,0.2); border-radius: var(--radius-sm);
  padding: 10px 14px; font-size: 13px; font-weight: 500;
  margin-top: 14px; display: none;
}
.auth-error.show { display: block; animation: shake 0.3s ease; }
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

/* ══════════════════════════════════════════════════════════════
   APP LAYOUT
══════════════════════════════════════════════════════════════ */

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

/* ── Navbar ─────────────────────────────────────────────────── */
.navbar {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
  padding: 0 24px;
  box-shadow: 0 2px 12px rgba(99,102,241,0.08);
}
.navbar-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.nav-brand { display: flex; align-items: center; gap: 10px; }
.nav-brand .brand-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 10px; display: flex; align-items: center; justify-content: center;
  font-size: 16px; box-shadow: 0 4px 12px rgba(99,102,241,0.3);
}
.nav-brand h1 { font-size: 18px; font-weight: 800; color: var(--text-primary); letter-spacing: -0.3px; }
.nav-brand .nav-subtitle { font-size: 12px; color: var(--text-muted); margin-left: 2px; }

.nav-user { display: flex; align-items: center; gap: 12px; }
.nav-user-info { text-align: right; }
.nav-user-info .user-name { font-size: 14px; font-weight: 700; color: var(--text-primary); }
.nav-user-info .user-role {
  font-size: 11px; font-weight: 600;
  padding: 2px 8px; border-radius: 99px;
  background: var(--primary-light); color: var(--primary);
  display: inline-block; margin-top: 1px;
}
.nav-user-info .user-role.master {
  background: linear-gradient(135deg, #fef3c7, #fde68a);
  color: #92400e;
}
.nav-avatar {
  width: 38px; height: 38px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex; align-items: center; justify-content: center;
  color: white; font-weight: 700; font-size: 15px;
  box-shadow: 0 4px 12px rgba(99,102,241,0.3);
}
.btn-logout {
  padding: 7px 16px; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  background: transparent; color: var(--text-secondary); font-size: 13px; font-weight: 600;
  cursor: pointer; font-family: inherit; transition: all var(--transition);
}
.btn-logout:hover { border-color: var(--danger); color: var(--danger); background: var(--danger-bg); }

/* ── Main Content ───────────────────────────────────────────── */
.main-content { flex: 1; max-width: 1200px; margin: 0 auto; padding: 32px 24px; width: 100%; }

/* ── Summary Cards ──────────────────────────────────────────── */
.stats-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px; margin-bottom: 28px;
}
.stat-card {
  background: var(--bg-card); border-radius: var(--radius-lg);
  padding: 20px 24px; border: 1px solid var(--border);
  box-shadow: var(--shadow-sm); transition: all var(--transition);
  position: relative; overflow: hidden;
}
.stat-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
}
.stat-card.total::before  { background: linear-gradient(90deg, var(--primary), var(--secondary)); }
.stat-card.active::before { background: linear-gradient(90deg, var(--warning), #f97316); }
.stat-card.done::before   { background: linear-gradient(90deg, var(--success), #059669); }
.stat-card.overdue::before{ background: linear-gradient(90deg, var(--danger), #dc2626); }
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.stat-value { font-size: 32px; font-weight: 800; letter-spacing: -1px; }
.stat-card.total  .stat-value { color: var(--primary); }
.stat-card.active .stat-value { color: var(--warning); }
.stat-card.done   .stat-value { color: var(--success); }
.stat-card.overdue .stat-value { color: var(--danger); }
.stat-label { font-size: 13px; font-weight: 600; color: var(--text-muted); margin-top: 2px; text-transform: uppercase; letter-spacing: 0.5px; }

/* ── Filter Bar ─────────────────────────────────────────────── */
.filter-bar {
  background: var(--bg-card); border-radius: var(--radius-lg);
  padding: 18px 20px; border: 1px solid var(--border);
  box-shadow: var(--shadow-sm); margin-bottom: 20px;
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
}
.filter-label { font-size: 12px; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.6px; white-space: nowrap; }
.filter-group { display: flex; gap: 6px; flex-wrap: wrap; }
.filter-btn {
  padding: 6px 14px; border-radius: 99px; border: 1.5px solid var(--border);
  background: transparent; font-size: 13px; font-weight: 600; color: var(--text-secondary);
  cursor: pointer; font-family: inherit; transition: all var(--transition);
}
.filter-btn:hover { border-color: var(--primary); color: var(--primary); }
.filter-btn.active { background: var(--primary); border-color: var(--primary); color: white; box-shadow: 0 2px 8px rgba(99,102,241,0.3); }
.filter-divider { width: 1px; height: 28px; background: var(--border); }
select.filter-select {
  padding: 7px 32px 7px 12px; border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); background: var(--bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%2364748b'/%3E%3C/svg%3E") no-repeat right 10px center;
  appearance: none; font-size: 13px; font-weight: 600; color: var(--text-secondary);
  cursor: pointer; font-family: inherit; transition: all var(--transition); outline: none;
}
select.filter-select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(99,102,241,0.1); }

/* ── Add Task Button ────────────────────────────────────────── */
.add-task-btn {
  width: 100%; padding: 14px;
  background: white; border: 2px dashed var(--border);
  border-radius: var(--radius-md); color: var(--text-muted);
  font-size: 14px; font-weight: 600; font-family: inherit;
  cursor: pointer; transition: all var(--transition);
  display: flex; align-items: center; justify-content: center; gap: 8px;
  margin-bottom: 16px;
}
.add-task-btn:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }
.add-task-btn .plus-icon { font-size: 20px; font-weight: 400; }

/* ── Task Cards ─────────────────────────────────────────────── */
.tasks-list { display: flex; flex-direction: column; gap: 10px; }
.task-card {
  background: var(--bg-card); border-radius: var(--radius-md);
  padding: 16px 20px; border: 1.5px solid var(--border);
  box-shadow: var(--shadow-sm); transition: all var(--transition);
  display: flex; align-items: flex-start; gap: 14px;
  animation: taskIn 0.25s ease;
  position: relative; overflow: hidden;
}
@keyframes taskIn {
  from { opacity: 0; transform: translateX(-12px); }
  to   { opacity: 1; transform: translateX(0); }
}
.task-card:hover { box-shadow: var(--shadow-md); transform: translateY(-1px); border-color: rgba(99,102,241,0.2); }
.task-card.completed { opacity: 0.6; }
.task-card.completed .task-title { text-decoration: line-through; color: var(--text-muted); }

/* Priority left border */
.task-card::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  border-radius: 4px 0 0 4px;
}
.task-card.priority-High::before   { background: var(--priority-high); }
.task-card.priority-Medium::before { background: var(--priority-medium); }
.task-card.priority-Low::before    { background: var(--priority-low); }

/* Overdue */
.task-card.overdue { background: #fff8f8; border-color: rgba(239,68,68,0.2); }

/* Checkbox */
.task-checkbox {
  width: 22px; height: 22px; border-radius: 50%; border: 2px solid var(--border);
  appearance: none; cursor: pointer; flex-shrink: 0; margin-top: 1px;
  transition: all var(--transition); position: relative; background: white;
}
.task-checkbox:checked { background: linear-gradient(135deg, var(--primary), var(--secondary)); border-color: var(--primary); }
.task-checkbox:checked::after {
  content: '✓'; position: absolute; inset: 0; display: flex;
  align-items: center; justify-content: center; color: white; font-size: 12px; font-weight: 700;
}
.task-checkbox:hover:not(:checked) { border-color: var(--primary); background: var(--primary-light); }

.task-body { flex: 1; min-width: 0; }
.task-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; }
.task-title { font-size: 15px; font-weight: 600; color: var(--text-primary); line-height: 1.4; }
.task-desc { font-size: 13px; color: var(--text-secondary); margin-top: 3px; line-height: 1.5; }
.task-meta { display: flex; align-items: center; gap: 8px; margin-top: 10px; flex-wrap: wrap; }

.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 10px; border-radius: 99px;
  font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.4px;
}
.badge-category { background: var(--primary-light); color: var(--primary-dark); }
.badge-priority-High   { background: var(--danger-bg);  color: var(--danger); }
.badge-priority-Medium { background: var(--warning-bg); color: #92400e; }
.badge-priority-Low    { background: var(--success-bg); color: #065f46; }
.badge-date { background: var(--bg); color: var(--text-muted); border: 1px solid var(--border); }
.badge-date.overdue { background: var(--danger-bg); color: var(--danger); border-color: rgba(239,68,68,0.2); }
.badge-user { background: var(--primary-light); color: var(--primary-dark); }

.task-actions { display: flex; gap: 6px; flex-shrink: 0; }
.btn-icon {
  width: 32px; height: 32px; border: none; background: var(--bg);
  border-radius: var(--radius-sm); cursor: pointer; font-size: 14px;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition); color: var(--text-muted);
}
.btn-icon:hover { background: var(--primary-light); color: var(--primary); transform: scale(1.1); }
.btn-icon.delete:hover { background: var(--danger-bg); color: var(--danger); }

/* ── Empty State ────────────────────────────────────────────── */
.empty-state {
  text-align: center; padding: 60px 20px;
  background: var(--bg-card); border-radius: var(--radius-lg);
  border: 2px dashed var(--border);
}
.empty-icon { font-size: 56px; margin-bottom: 16px; opacity: 0.5; }
.empty-state h3 { font-size: 18px; font-weight: 700; color: var(--text-secondary); margin-bottom: 6px; }
.empty-state p { font-size: 14px; color: var(--text-muted); }

/* ── Loading ────────────────────────────────────────────────── */
.loading-overlay {
  display: flex; align-items: center; justify-content: center;
  padding: 40px; gap: 12px; color: var(--text-muted); font-size: 14px; font-weight: 600;
}
.spinner {
  width: 24px; height: 24px; border: 3px solid var(--border);
  border-top-color: var(--primary); border-radius: 50%; animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ══════════════════════════════════════════════════════════════
   MODAL
══════════════════════════════════════════════════════════════ */

.modal-overlay {
  position: fixed; inset: 0; background: rgba(30,27,75,0.5);
  backdrop-filter: blur(6px); z-index: 200;
  display: flex; align-items: center; justify-content: center; padding: 20px;
  opacity: 0; pointer-events: none; transition: opacity var(--transition);
}
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal {
  background: var(--bg-card); border-radius: var(--radius-xl); padding: 32px;
  width: 100%; max-width: 520px; box-shadow: var(--shadow-xl);
  transform: scale(0.95) translateY(12px); transition: transform var(--transition);
  max-height: 90vh; overflow-y: auto;
}
.modal-overlay.open .modal { transform: scale(1) translateY(0); }
.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.modal-title { font-size: 20px; font-weight: 800; color: var(--text-primary); }
.btn-close {
  width: 32px; height: 32px; border: none; background: var(--bg);
  border-radius: var(--radius-sm); cursor: pointer; font-size: 18px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); transition: all var(--transition);
}
.btn-close:hover { background: var(--danger-bg); color: var(--danger); }

.modal-form .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.modal-form .form-group label { font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
.modal-form input, .modal-form textarea, .modal-form select {
  width: 100%; padding: 11px 14px;
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  font-size: 14px; font-family: inherit; background: var(--bg);
  color: var(--text-primary); transition: all var(--transition); outline: none;
}
.modal-form textarea { resize: vertical; min-height: 80px; }
.modal-form input:focus, .modal-form textarea:focus, .modal-form select:focus {
  border-color: var(--primary); background: white;
  box-shadow: 0 0 0 3px rgba(99,102,241,0.1);
}
.modal-footer { display: flex; gap: 12px; justify-content: flex-end; margin-top: 24px; }
.btn-secondary {
  padding: 11px 22px; border: 1.5px solid var(--border); border-radius: var(--radius-md);
  background: transparent; color: var(--text-secondary); font-size: 14px; font-weight: 600;
  cursor: pointer; font-family: inherit; transition: all var(--transition);
}
.btn-secondary:hover { background: var(--bg); border-color: var(--text-secondary); }
.btn-submit {
  padding: 11px 28px; border: none; border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white; font-size: 14px; font-weight: 700; cursor: pointer;
  font-family: inherit; box-shadow: 0 4px 12px rgba(99,102,241,0.3);
  transition: all var(--transition);
}
.btn-submit:hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgba(99,102,241,0.4); }

/* ══════════════════════════════════════════════════════════════
   ADMIN DASHBOARD
══════════════════════════════════════════════════════════════ */

.admin-header {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-xl); padding: 28px 32px;
  color: white; margin-bottom: 28px; position: relative; overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.admin-header::after {
  content: '👑'; position: absolute; right: 24px; top: 50%;
  transform: translateY(-50%); font-size: 64px; opacity: 0.15;
}
.admin-header h2 { font-size: 22px; font-weight: 800; margin-bottom: 4px; }
.admin-header p { font-size: 14px; opacity: 0.85; }

.users-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px; margin-bottom: 28px;
}
.user-stat-card {
  background: var(--bg-card); border-radius: var(--radius-md);
  padding: 16px 18px; border: 1.5px solid var(--border);
  box-shadow: var(--shadow-sm); cursor: pointer; transition: all var(--transition);
}
.user-stat-card:hover, .user-stat-card.selected {
  border-color: var(--primary); box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.user-stat-card.selected { background: var(--primary-light); }
.user-stat-card .user-name { font-size: 14px; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; display: flex; align-items: center; gap: 6px; }
.user-stat-row { display: flex; justify-content: space-between; font-size: 12px; margin-top: 4px; color: var(--text-muted); }
.user-stat-row span:last-child { font-weight: 700; color: var(--text-secondary); }
.progress-bar { height: 4px; background: var(--border); border-radius: 99px; margin-top: 8px; overflow: hidden; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--primary), var(--secondary)); border-radius: 99px; transition: width 0.6s ease; }

/* ══════════════════════════════════════════════════════════════
   TOAST NOTIFICATIONS
══════════════════════════════════════════════════════════════ */

.toast-container { position: fixed; bottom: 24px; right: 24px; z-index: 999; display: flex; flex-direction: column; gap: 8px; }
.toast {
  background: var(--bg-card); border-radius: var(--radius-md);
  padding: 12px 18px; box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--success); font-size: 13px; font-weight: 600;
  color: var(--text-primary); min-width: 250px;
  animation: toastIn 0.3s ease;
}
.toast.error { border-left-color: var(--danger); }
.toast.info  { border-left-color: var(--primary); }
@keyframes toastIn {
  from { opacity: 0; transform: translateX(24px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ── Confirm Dialog ─────────────────────────────────────────── */
.confirm-overlay {
  position: fixed; inset: 0; background: rgba(30,27,75,0.5);
  backdrop-filter: blur(4px); z-index: 300;
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.confirm-dialog {
  background: var(--bg-card); border-radius: var(--radius-xl);
  padding: 28px 32px; max-width: 380px; width: 100%;
  box-shadow: var(--shadow-xl); text-align: center;
  animation: slideUp 0.25s ease;
}
.confirm-icon { font-size: 40px; margin-bottom: 12px; }
.confirm-dialog h3 { font-size: 17px; font-weight: 800; margin-bottom: 8px; }
.confirm-dialog p { font-size: 13px; color: var(--text-secondary); margin-bottom: 22px; }
.confirm-actions { display: flex; gap: 10px; justify-content: center; }
.btn-danger {
  padding: 10px 24px; border: none; border-radius: var(--radius-md);
  background: var(--danger); color: white; font-size: 14px; font-weight: 700;
  cursor: pointer; font-family: inherit; transition: all var(--transition);
}
.btn-danger:hover { background: #dc2626; transform: translateY(-1px); }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 640px) {
  .main-content { padding: 16px; }
  .auth-card { padding: 24px 20px; }
  .navbar { padding: 0 16px; }
  .modal { padding: 24px 20px; }
  .modal-form .form-row { grid-template-columns: 1fr; }
  .filter-bar { gap: 8px; }
  .admin-header { padding: 20px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ══════════════════════════════════════════════════════════════
   CHANGE PASSWORD
══════════════════════════════════════════════════════════════ */

.btn-change-pw {
  padding: 7px 14px; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  background: transparent; color: var(--text-secondary); font-size: 13px; font-weight: 600;
  cursor: pointer; font-family: inherit; transition: all var(--transition);
  display: flex; align-items: center; gap: 6px;
}
.btn-change-pw:hover {
  border-color: var(--primary); color: var(--primary); background: var(--primary-light);
}

/* Password input with show/hide toggle */
.pw-input-wrap { position: relative; }
.pw-input-wrap input { padding-right: 44px; }
.pw-toggle {
  position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
  background: none; border: none; cursor: pointer; font-size: 16px;
  color: var(--text-muted); padding: 2px; transition: color var(--transition);
  line-height: 1;
}
.pw-toggle:hover { color: var(--primary); }

/* Password strength bar */
.pw-strength { margin-top: 8px; }
.pw-strength-bar {
  height: 4px; background: var(--border); border-radius: 99px; overflow: hidden; margin-bottom: 4px;
}
.pw-strength-fill {
  height: 100%; border-radius: 99px; transition: width 0.3s ease, background 0.3s ease;
  width: 0%;
}
.pw-strength-text { font-size: 11px; font-weight: 600; color: var(--text-muted); }

/* Change PW success animation */
.pw-success-icon {
  width: 56px; height: 56px; background: var(--success-bg);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 26px; margin: 0 auto 12px;
  animation: successPop 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes successPop {
  from { transform: scale(0); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}