:root {
  /* ── Vibly Ocean Pro palette ── */
  --vb-navy:         #0f2057;
  --vb-blue:         #1d4ed8;
  --vb-blue-mid:     #2563eb;
  --vb-blue-light:   #3b82f6;
  --vb-cyan:         #06b6d4;
  --vb-accent:       #60a5fa;
  --vb-gold:         #f59e0b;
  --vb-gold-dark:    #d97706;
  --vb-green:        #10b981;
  --vb-red:          #ef4444;

  /* Gradients */
  --vb-grad:         linear-gradient(135deg, #0f2057 0%, #1d4ed8 60%, #3b82f6 100%);
  --vb-grad-btn:     linear-gradient(135deg, #1d4ed8 0%, #3b82f6 100%);
  --vb-grad-soft:    linear-gradient(135deg, #dbeafe 0%, #eff6ff 100%);

  /* Neutrals */
  --vb-bg:           #f0f4ff;
  --vb-surface:      #ffffff;
  --vb-border:       #bfdbfe;
  --vb-border-soft:  #dbeafe;
  --vb-text:         #0f172a;
  --vb-text-muted:   #475569;
  --vb-radius:       10px;
  --vb-radius-lg:    14px;
  --vb-shadow:       0 1px 3px rgba(15,32,87,0.08);
  --vb-shadow-md:    0 4px 12px rgba(15,32,87,0.12);
  --vb-shadow-lg:    0 10px 30px rgba(15,32,87,0.2);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--vb-bg);
  color: var(--vb-text);
  line-height: 1.6;
  min-height: 100vh;
}

/* ── Typography ── */
h1 { font-size: 1.75rem; font-weight: 700; line-height: 1.25; }
h2 { font-size: 1.4rem; font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 600; }
h4 { font-size: 1rem; font-weight: 600; }
p  { color: var(--vb-text-muted); line-height: 1.6; }
a  { color: var(--vb-blue-mid); text-decoration: none; }
a:hover { text-decoration: none; }

/* ── Layout ── */
.container    { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }
.container-sm { max-width: 480px;  margin: 0 auto; padding: 0 1.5rem; }
.container-md { max-width: 760px;  margin: 0 auto; padding: 0 1.5rem; }

/* ── Navbar ── */
.navbar {
  background: var(--vb-grad);
  height: 62px;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 200;
  box-shadow: 0 3px 16px rgba(15,32,87,0.4);
}
.navbar-brand  { display: flex; align-items: center; gap: 0.65rem; text-decoration: none; }
.navbar-logo   {
  width: 34px; height: 34px;
  background: rgba(255,255,255,0.18);
  border: 2px solid rgba(255,255,255,0.45);
  border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 900; font-size: 0.95rem; color: white;
  letter-spacing: -0.5px;
}
.navbar-name      { color: white; font-weight: 900; font-size: 1.2rem; letter-spacing: -0.5px; }
.navbar-name span { color: var(--vb-cyan); }
.navbar-nav       { display: flex; align-items: center; gap: 0.25rem; }
.nav-link {
  color: rgba(255,255,255,0.82);
  padding: 0.4rem 0.8rem;
  border-radius: 7px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.15s;
  text-decoration: none;
}
.nav-link:hover,
.nav-link.active  { color: white; background: rgba(255,255,255,0.18); text-decoration: none; }
.nav-badge {
  background: var(--vb-gold);
  color: #0f172a;
  font-size: 0.62rem; font-weight: 800;
  padding: 0.1rem 0.35rem; border-radius: 4px;
  margin-left: 0.2rem; vertical-align: middle;
}

/* ── Cards ── */
.card {
  background: var(--vb-surface);
  border: 1px solid var(--vb-border-soft);
  border-radius: var(--vb-radius-lg);
  padding: 1.5rem;
  box-shadow: var(--vb-shadow);
}
.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.25rem; }

/* ── Buttons — all fully visible at rest ── */
.btn {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.6rem 1.25rem;
  border-radius: 8px; border: none;
  font-size: 0.875rem; font-weight: 600;
  cursor: pointer; transition: all 0.18s;
  text-decoration: none; white-space: nowrap;
  min-height: 44px; justify-content: center;
  font-family: inherit;
}
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-primary {
  background: var(--vb-grad-btn);
  color: white;
  box-shadow: 0 2px 8px rgba(29,78,216,0.4);
}
.btn-primary:hover:not(:disabled) {
  box-shadow: 0 4px 16px rgba(29,78,216,0.5);
  transform: translateY(-1px);
}

.btn-gold {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  color: #0f172a;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(245,158,11,0.4);
}
.btn-gold:hover:not(:disabled) {
  box-shadow: 0 4px 14px rgba(245,158,11,0.5);
  transform: translateY(-1px);
}

.btn-navy {
  background: var(--vb-navy);
  color: white;
  box-shadow: 0 2px 6px rgba(15,32,87,0.35);
}
.btn-navy:hover:not(:disabled) { background: #162970; transform: translateY(-1px); }

.btn-green {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: white;
  box-shadow: 0 2px 6px rgba(16,185,129,0.35);
}
.btn-green:hover:not(:disabled) { box-shadow: 0 4px 12px rgba(16,185,129,0.45); transform: translateY(-1px); }

.btn-red {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  color: white;
  box-shadow: 0 2px 6px rgba(239,68,68,0.35);
}
.btn-red:hover:not(:disabled) { box-shadow: 0 4px 12px rgba(239,68,68,0.45); transform: translateY(-1px); }

/* Outline — solid visible border, not grey ghost */
.btn-outline {
  background: white;
  border: 2px solid var(--vb-blue-mid);
  color: var(--vb-blue-mid);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(29,78,216,0.12);
}
.btn-outline:hover:not(:disabled) {
  background: var(--vb-grad-soft);
  border-color: var(--vb-blue);
  color: var(--vb-blue);
  box-shadow: 0 2px 8px rgba(29,78,216,0.2);
}

.btn-sm    { padding: 0.35rem 0.875rem; font-size: 0.8rem;  min-height: 36px; }
.btn-lg    { padding: 0.85rem 2rem;     font-size: 1rem;     min-height: 52px; }
.btn-block { width: 100%; }

/* ── Forms ── */
.form-group { margin-bottom: 1.2rem; }
label { display: block; font-size: 0.875rem; font-weight: 600; margin-bottom: 0.35rem; color: var(--vb-text); }
input[type="text"], input[type="email"], input[type="password"],
input[type="tel"], input[type="number"], select, textarea {
  width: 100%; padding: 0.65rem 0.875rem;
  border: 1.5px solid #93c5fd;
  border-radius: 8px;
  font-size: 0.9rem; color: var(--vb-text); background: white;
  transition: border-color 0.15s, box-shadow 0.15s;
  font-family: inherit; min-height: 44px;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--vb-blue-mid);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.14);
}
textarea { min-height: 90px; resize: vertical; }
.form-hint { font-size: 0.78rem; color: var(--vb-text-muted); margin-top: 0.3rem; }

/* ── Badges ── */
.badge        { display: inline-flex; align-items: center; padding: 0.22rem 0.65rem; border-radius: 999px; font-size: 0.75rem; font-weight: 600; }
.badge-blue   { background: #dbeafe; color: #1d4ed8; }
.badge-green  { background: #d1fae5; color: #059669; }
.badge-red    { background: #fee2e2; color: #dc2626; }
.badge-gold   { background: #fef3c7; color: #d97706; }
.badge-purple { background: #ede9fe; color: #6d28d9; }
.badge-navy   { background: #dbeafe; color: var(--vb-navy); }
.badge-orange { background: #ffedd5; color: #c2410c; }

/* ── Alerts ── */
.alert         { padding: 0.875rem 1rem; border-radius: 8px; font-size: 0.875rem; font-weight: 500; margin-bottom: 1.25rem; }
.alert-error   { background: #fef2f2; color: #dc2626; border: 1px solid #fecaca; }
.alert-success { background: #f0fdf4; color: #059669; border: 1px solid #bbf7d0; }
.alert-info    { background: #eff6ff; color: #1d4ed8; border: 1px solid #bfdbfe; }
.alert-warning { background: #fffbeb; color: #92400e; border: 1px solid #fde68a; }

/* ── Tables ── */
.table-wrap { overflow-x: auto; }
table       { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
th          { text-align: left; padding: 0.7rem 1rem; font-weight: 600; color: var(--vb-text-muted); border-bottom: 2px solid var(--vb-border-soft); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.04em; }
td          { padding: 0.875rem 1rem; border-bottom: 1px solid var(--vb-border-soft); }
tr:last-child td { border-bottom: none; }
tr:hover td { background: #f0f7ff; }

/* ── Stats ── */
.stat-grid  { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px,1fr)); gap: 1rem; }
.stat-card  { background: white; border: 1px solid var(--vb-border-soft); border-radius: var(--vb-radius); padding: 1.25rem; }
.stat-value { font-size: 2rem; font-weight: 800; color: var(--vb-navy); line-height: 1; }
.stat-label { font-size: 0.8rem; color: var(--vb-text-muted); margin-top: 0.25rem; }
.stat-icon  { font-size: 1.4rem; margin-bottom: 0.4rem; }

/* ── Modals ── */
.modal-overlay { position: fixed; inset: 0; background: rgba(15,32,87,0.5); display: flex; align-items: center; justify-content: center; z-index: 500; padding: 1rem; opacity: 0; pointer-events: none; transition: opacity 0.2s; }
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal         { background: white; border-radius: var(--vb-radius-lg); width: 100%; max-width: 560px; max-height: 90vh; overflow-y: auto; box-shadow: var(--vb-shadow-lg); transform: translateY(10px); transition: transform 0.2s; }
.modal-overlay.open .modal { transform: translateY(0); }
.modal-header  { padding: 1.2rem 1.5rem; border-bottom: 1px solid var(--vb-border-soft); display: flex; align-items: center; justify-content: space-between; }
.modal-body    { padding: 1.5rem; }
.modal-footer  { padding: 1rem 1.5rem; border-top: 1px solid var(--vb-border-soft); display: flex; justify-content: flex-end; gap: 0.75rem; }
.modal-close   { background: none; border: none; font-size: 1.2rem; cursor: pointer; color: var(--vb-text-muted); padding: 0.25rem; line-height: 1; }

/* ── Misc ── */
.divider       { border: none; border-top: 1px solid var(--vb-border-soft); margin: 1.5rem 0; }
.page-header   { padding: 2rem 0 1.5rem; }
.empty-state   { text-align: center; padding: 3rem 1.5rem; }
.empty-state-icon { font-size: 3rem; margin-bottom: 1rem; }

.spinner       { width: 20px; height: 20px; border: 2.5px solid rgba(255,255,255,0.3); border-top-color: white; border-radius: 50%; animation: spin 0.6s linear infinite; display: inline-block; vertical-align: middle; }
.spinner-dark  { border-color: rgba(29,78,216,0.2); border-top-color: var(--vb-blue-mid); }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Grid helpers ── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 1rem; }
.flex         { display: flex; }
.flex-center  { display: flex; align-items: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-wrap    { flex-wrap: wrap; }
.gap-sm { gap: 0.5rem; }
.gap-md { gap: 1rem; }
.gap-lg { gap: 1.5rem; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.text-sm     { font-size: 0.875rem; }
.text-xs     { font-size: 0.78rem; }
.text-muted  { color: var(--vb-text-muted); }
.text-center { text-align: center; }
.font-bold   { font-weight: 700; }
.w-full      { width: 100%; }

/* ── Question type pills ── */
.qtype-pill   { display: inline-flex; align-items: center; gap: 0.25rem; padding: 0.18rem 0.55rem; border-radius: 999px; font-size: 0.72rem; font-weight: 600; }
.qtype-mc     { background: #dbeafe; color: #1d4ed8; }
.qtype-quiz   { background: #fef3c7; color: #d97706; }
.qtype-wc     { background: #d1fae5; color: #059669; }
.qtype-ot     { background: #ede9fe; color: #6d28d9; }
.qtype-rating { background: #ffedd5; color: #c2410c; }

/* ── Auth pages ── */
.auth-wrap  { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 1.5rem; background: var(--vb-grad); }
.auth-box   { background: white; border-radius: var(--vb-radius-lg); padding: 2.5rem; width: 100%; max-width: 440px; box-shadow: var(--vb-shadow-lg); }
.auth-logo  { text-align: center; margin-bottom: 2rem; }
.auth-logo-icon {
  width: 56px; height: 56px;
  background: var(--vb-grad-btn);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 900; font-size: 1.2rem; color: white;
  margin: 0 auto 0.75rem;
  box-shadow: 0 4px 14px rgba(29,78,216,0.4);
  letter-spacing: -0.5px;
}
.auth-logo h2   { color: var(--vb-navy); margin-bottom: 0.25rem; }
.auth-footer    { text-align: center; margin-top: 1.5rem; font-size: 0.875rem; color: var(--vb-text-muted); }

/* ── Footer ── */
.vb-footer {
  text-align: center;
  padding: 1.25rem 1.5rem;
  font-size: 0.78rem;
  color: var(--vb-text-muted);
  border-top: 1px solid var(--vb-border-soft);
  margin-top: 2rem;
}
.vb-footer a { color: var(--vb-blue-mid); font-weight: 600; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .grid-2, .grid-3  { grid-template-columns: 1fr; }
  h1                 { font-size: 1.4rem; }
  .hide-mobile       { display: none !important; }
  .navbar-nav .nav-link { padding: 0.35rem 0.45rem; font-size: 0.8rem; }
}