/* ============================================================
   Orbis Journal — Main CSS
   Design: Editorial academic aesthetic
   Palette: Warm off-white, Dark navy, Lavender accent
   ============================================================ */

/* ── Google Fonts ─────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700&family=Inter:wght@300;400;500;600&display=swap');

/* ── Design Tokens ────────────────────────────────────────── */
:root {
  --bg:           #FFFEF7;
  --bg-card:      #FFFFFF;
  --navy:         #000214;
  --navy-mid:     #0B0D2E;
  --navy-light:   #1A1D4E;
  --lavender:     #A699FF;
  --lavender-dim: #7B6FD4;
  --lavender-soft:#E8E5FF;
  --text:         #110505;
  --text-mid:     #3D3A3A;
  --text-muted:   #6B6B6B;
  --border:       #E5E1DA;
  --border-focus: #A699FF;
  --white:        #FFFFFF;
  --error:        #C0392B;
  --error-bg:     #FDF2F2;
  --success:      #1B7A4A;
  --success-bg:   #F0FBF4;
  --warning:      #92600A;
  --warning-bg:   #FFFBF0;
  --info:         #1A5276;
  --info-bg:      #EAF4FB;

  --shadow-sm:  0 1px 3px rgba(0,2,20,0.08);
  --shadow-md:  0 4px 16px rgba(0,2,20,0.10);
  --shadow-lg:  0 12px 40px rgba(0,2,20,0.14);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --font-serif:  'Playfair Display', Georgia, serif;
  --font-sans:   'Inter', system-ui, -apple-system, sans-serif;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

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

img { max-width: 100%; height: auto; display: block; }
a   { color: var(--lavender-dim); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Typography ───────────────────────────────────────────── */
h1, h2, h3 { font-family: var(--font-serif); color: var(--navy); line-height: 1.2; }
h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 700; }
h2 { font-size: clamp(1.3rem, 3vw, 1.8rem); font-weight: 600; }
h3 { font-size: 1.1rem; font-weight: 600; }
p  { color: var(--text-mid); }

/* ── Utility ──────────────────────────────────────────────── */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.text-center { text-align: center; }
.text-muted  { color: var(--text-muted); font-size: 0.875rem; }
.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; }

/* ── Alerts ───────────────────────────────────────────────── */
.alert {
  padding: 0.85rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  margin-bottom: 1rem;
  border: 1px solid transparent;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  animation: fadeIn 0.3s ease;
}
.alert-success { background: var(--success-bg); color: var(--success); border-color: #B7E5CC; }
.alert-error   { background: var(--error-bg);   color: var(--error);   border-color: #F5C6C6; }
.alert-warning { background: var(--warning-bg); color: var(--warning); border-color: #FDD490; }
.alert-info    { background: var(--info-bg);    color: var(--info);    border-color: #AED6F1; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: all 0.18s ease;
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
}
.btn:focus-visible {
  outline: 2px solid var(--lavender);
  outline-offset: 2px;
}
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

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

.btn-lavender {
  background: var(--lavender);
  color: var(--navy);
  border-color: var(--lavender);
}
.btn-lavender:hover:not(:disabled) { background: var(--lavender-dim); border-color: var(--lavender-dim); color: var(--white); }

.btn-outline {
  background: transparent;
  color: var(--navy);
  border-color: var(--border);
}
.btn-outline:hover:not(:disabled) { border-color: var(--navy); background: var(--bg); }

.btn-danger {
  background: var(--error);
  color: var(--white);
  border-color: var(--error);
}
.btn-danger:hover:not(:disabled) { background: #A93226; }

.btn-sm { padding: 0.35rem 0.85rem; font-size: 0.8rem; }
.btn-lg { padding: 0.9rem 2rem; font-size: 1rem; }
.btn-full { width: 100%; justify-content: center; }

/* ── Forms ────────────────────────────────────────────────── */
.form-group {
  margin-bottom: 1.25rem;
}
.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 0.4rem;
}
.form-label .required { color: var(--error); margin-left: 2px; }

.form-control {
  width: 100%;
  padding: 0.6rem 0.9rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--text);
  background: var(--white);
  transition: border-color 0.15s, box-shadow 0.15s;
  appearance: none;
}
.form-control:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(166,153,255,0.18);
}
.form-control::placeholder { color: var(--text-muted); }
.form-control.is-invalid { border-color: var(--error); }

textarea.form-control { resize: vertical; min-height: 80px; }
select.form-control { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23666' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.8rem center; padding-right: 2.2rem; }

.form-hint { font-size: 0.8rem; color: var(--text-muted); margin-top: 0.3rem; }
.form-error { font-size: 0.8rem; color: var(--error); margin-top: 0.3rem; }

.input-group {
  position: relative;
}
.input-group .form-control { padding-right: 2.8rem; }
.input-group-icon {
  position: absolute;
  right: 0.8rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  padding: 0.2rem;
}
.input-group-icon:hover { color: var(--navy); }

.form-check { display: flex; align-items: center; gap: 0.5rem; }
.form-check-input { width: 1rem; height: 1rem; accent-color: var(--lavender-dim); cursor: pointer; }
.form-check-label { font-size: 0.9rem; color: var(--text-mid); cursor: pointer; }

/* ── Cards ────────────────────────────────────────────────── */
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
.card-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.card-header h2, .card-header h3 { margin: 0; }
.card-body   { padding: 1.5rem; }
.card-footer { padding: 1rem 1.5rem; border-top: 1px solid var(--border); background: var(--bg); border-radius: 0 0 var(--radius-md) var(--radius-md); }

/* ── Tables ───────────────────────────────────────────────── */
.table-responsive { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
thead th {
  background: var(--bg);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
}
tbody td { padding: 0.85rem 1rem; border-bottom: 1px solid var(--border); vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: rgba(166,153,255,0.04); }

/* ── Status Badges ────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.badge-active    { background: #E8F8EF; color: #1B7A4A; }
.badge-inactive  { background: #F3F3F3; color: #666; }
.badge-locked    { background: #FDF2F2; color: #C0392B; }
.badge-pending   { background: #FFFBF0; color: #92600A; }
.badge-expired   { background: #FDF2F2; color: #C0392B; }
.badge-suspended { background: #FDF0F8; color: #8E3E6F; }
.badge-cancelled { background: #F3F3F3; color: #555; }
.badge-admin     { background: var(--lavender-soft); color: var(--lavender-dim); }
.badge-subscriber{ background: #EEF7FF; color: #1A5276; }
.badge-success   { background: var(--success-bg); color: var(--success); }
.badge-failure   { background: var(--error-bg);   color: var(--error); }

/* ── Pagination ───────────────────────────────────────────── */
.pagination {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  flex-wrap: wrap;
}
.page-link {
  padding: 0.4rem 0.8rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--text-mid);
  transition: all 0.15s;
  text-decoration: none;
}
.page-link:hover { border-color: var(--lavender); color: var(--lavender-dim); }
.page-link.active { background: var(--navy); color: var(--white); border-color: var(--navy); }
.page-link.disabled { opacity: 0.4; pointer-events: none; }

/* ── Login Page ───────────────────────────────────────────── */
.login-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  padding: 2rem 1rem;
}
.login-brand {
  text-align: center;
  margin-bottom: 2rem;
}
.login-brand img {
  max-height: 60px;
  margin: 0 auto 0.75rem;
}
.login-brand-name {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: 0.05em;
}
.login-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 2.5rem 2.5rem 2rem;
  width: 100%;
  max-width: 440px;
  animation: slideUp 0.35s ease;
}
@keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: none; } }

.login-heading {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 0.35rem;
  font-family: var(--font-serif);
}
.login-subtext { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 1.75rem; }

.login-submit-btn {
  background: var(--navy);
  color: var(--white);
  padding: 0.8rem 1.5rem;
  width: 100%;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: background 0.18s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
}
.login-submit-btn:hover:not(:disabled) { background: var(--navy-light); }
.login-submit-btn:disabled { opacity: 0.6; cursor: not-allowed; }

.login-submit-btn .spinner {
  width: 18px; height: 18px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: none;
}
.login-submit-btn.loading .spinner { display: block; }
.login-submit-btn.loading .btn-text { display: none; }

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

.login-footer {
  text-align: center;
  margin-top: 2rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.turnstile-wrapper { margin: 1rem 0; }

/* ── Portal Page ──────────────────────────────────────────── */
.portal-layout {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}
.portal-header {
  height: 60px;
  min-height: 60px;
  background: var(--navy);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  box-shadow: 0 2px 8px rgba(0,2,20,0.2);
  position: relative;
  z-index: 10;
  flex-shrink: 0;
}
.portal-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  flex-shrink: 0;
}
.portal-logo img {
  height: 34px;
  width: auto;
}
.portal-logo-name {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.05em;
}
.portal-logo:hover .portal-logo-name { color: var(--lavender); }

.portal-user { position: relative; }
.portal-user-trigger {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--white);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius-sm);
  transition: background 0.15s;
}
.portal-user-trigger:hover { background: rgba(255,255,255,0.1); }
.portal-user-trigger:focus-visible { outline: 2px solid var(--lavender); }
.portal-hello { color: rgba(255,255,255,0.7); font-size: 0.8rem; margin-right: 2px; }
.portal-name  { font-weight: 500; }
.dropdown-arrow { font-size: 0.65rem; opacity: 0.7; transition: transform 0.2s; }
.portal-user-trigger[aria-expanded="true"] .dropdown-arrow { transform: rotate(180deg); }

.dropdown-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  min-width: 180px;
  padding: 0.4rem 0;
  z-index: 100;
  animation: dropIn 0.15s ease;
}
@keyframes dropIn { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }

.dropdown-menu.hidden { display: none; }
.dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  font-size: 0.875rem;
  color: var(--text);
  cursor: pointer;
  transition: background 0.12s;
  text-decoration: none;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-family: var(--font-sans);
}
.dropdown-item:hover { background: var(--lavender-soft); color: var(--lavender-dim); }
.dropdown-divider { height: 1px; background: var(--border); margin: 0.3rem 0; }

.portal-iframe-container {
  flex: 1;
  position: relative;
  overflow: hidden;
}
.portal-iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}
.iframe-loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  gap: 1rem;
  z-index: 5;
}
.iframe-spinner {
  width: 40px; height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--lavender-dim);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
.iframe-fallback {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  gap: 1.5rem;
  padding: 2rem;
  text-align: center;
}
.iframe-fallback.show { display: flex; }
.iframe-fallback-icon { font-size: 3rem; opacity: 0.3; }
.iframe-fallback h3 { font-family: var(--font-serif); color: var(--navy); }
.iframe-fallback p  { color: var(--text-muted); max-width: 400px; }

/* ── My Account Page ──────────────────────────────────────── */
.account-page {
  min-height: 100vh;
  background: var(--bg);
}
.account-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}
.account-section {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  overflow: hidden;
}
.account-section-header {
  padding: 1.1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.account-section-header h3 { font-size: 0.95rem; color: var(--navy); }
.account-section-body { padding: 1.5rem; }

.subscription-detail-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
  gap: 1rem;
}
.subscription-detail-row:last-child { border-bottom: none; }
.subscription-detail-label { color: var(--text-muted); font-weight: 500; flex-shrink: 0; }
.subscription-detail-value { color: var(--text); text-align: right; }

/* ── Subscription Status Page ─────────────────────────────── */
.sub-status-page {
  min-height: 100vh;
  background: var(--bg);
  display: flex;
  flex-direction: column;
}
.sub-status-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem 1.5rem;
  text-align: center;
}
.sub-status-icon { font-size: 4rem; margin-bottom: 1.5rem; opacity: 0.7; }
.sub-status-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  max-width: 500px;
  width: 100%;
  box-shadow: var(--shadow-md);
}

@media (max-width: 640px) {
  .login-card { padding: 1.75rem 1.25rem; }
  .portal-logo-name { font-size: 1rem; }
  .portal-hello { display: none; }
  .account-content { padding: 1rem; }
  .sub-status-card { padding: 1.5rem; }

  table { font-size: 0.8rem; }
  thead th, tbody td { padding: 0.6rem 0.7rem; }
}

@media (max-width: 480px) {
  .portal-header { padding: 0 1rem; }
  .portal-logo-name { display: none; }
}

/* ── Badges ────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 0.18rem 0.65rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: capitalize;
  white-space: nowrap;
}
/* Account / subscription status */
.badge-active    { background: var(--success-bg); color: var(--success); }
.badge-inactive  { background: #F2F2F2; color: #666; }
.badge-locked    { background: #FEF3F2; color: #B42318; }
.badge-pending   { background: var(--warning-bg); color: var(--warning); }
.badge-expired   { background: #FEF3F2; color: #B42318; }
.badge-suspended { background: var(--warning-bg); color: #7A4F00; }
.badge-cancelled { background: #F2F2F2; color: #444; }
/* Login result */
.badge-success   { background: var(--success-bg); color: var(--success); }
.badge-failure   { background: var(--error-bg); color: var(--error); }
/* Roles */
.badge-admin     { background: var(--lavender-soft); color: var(--lavender-dim); }
.badge-subscriber{ background: #EAF4FB; color: #1A5276; }
/* Warning (for must-change-password etc) */
.badge-warning   { background: var(--warning-bg); color: var(--warning); }

/* ── Account Page ──────────────────────────────────────────── */
.account-page {
  min-height: 100vh;
  background: var(--bg);
  padding-bottom: 3rem;
}
.account-content {
  max-width: 860px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* ── Admin Users Filter Bar ────────────────────────────────── */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 1.25rem;
  align-items: center;
}
.filter-bar .form-control { width: auto; flex: 1; min-width: 140px; }
.filter-bar .search-input { min-width: 200px; flex: 2; }

/* ── Table Action Buttons ──────────────────────────────────── */
.actions-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
}

/* ── Pagination ────────────────────────────────────────────── */
.pagination {
  display: flex;
  gap: 0.25rem;
  flex-wrap: wrap;
}
.page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.3rem 0.7rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--navy);
  text-decoration: none;
  transition: all 0.15s;
}
.page-link:hover { border-color: var(--navy); background: var(--bg); text-decoration: none; }
.page-link.active {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
}

/* ── Card Footer ───────────────────────────────────────────── */
.card-footer {
  padding: 0.85rem 1.25rem;
  border-top: 1px solid var(--border);
  background: var(--bg);
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

/* ── Logo / Favicon Preview Boxes ──────────────────────────── */
.logo-preview-box {
  background: var(--navy);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  margin-bottom: 0.75rem;
}
.favicon-preview-box {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
}
.favicon-preview-img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  image-rendering: pixelated;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: #fff;
}

/* ── Form checkbox ─────────────────────────────────────────── */
.form-check {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  margin-bottom: 0.75rem;
}
.form-check-input {
  width: 16px;
  height: 16px;
  margin-top: 2px;
  cursor: pointer;
  accent-color: var(--lavender-dim);
  flex-shrink: 0;
}
.form-check-label { font-size: 0.875rem; cursor: pointer; color: var(--text); }

/* ── Settings Tabs ─────────────────────────────────────────── */
.settings-tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid var(--border);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.tab-btn {
  padding: 0.7rem 1.3rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  color: var(--text-muted);
  transition: color 0.15s, border-color 0.15s;
  font-family: var(--font-sans);
}
.tab-btn:hover { color: var(--navy); }
.tab-btn.active { color: var(--navy); border-bottom-color: var(--lavender); font-weight: 600; }

.tab-panel { display: none; }
.tab-panel.active { display: block; }