/* ================================================================
   EventFlow Registration Pages — Inter Design System 2025
   Used by: register_multistep.html, register_single_page.html
   Light + Dark mode, clean and accessible.
   ================================================================ */
@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;
  --primary-glow:   rgba(99,102,241,0.15);
  --accent:         #6366f1;

  --bg:             #f1f5f9;
  --bg-alt:         #e2e8f0;
  --surface:        #ffffff;
  --surface-2:      #f8fafc;
  --border:         #e2e8f0;
  --border-focus:   #6366f1;

  --text:           #0f172a;
  --text-2:         #475569;
  --text-3:         #94a3b8;
  --placeholder:    #94a3b8;

  --success:        #10b981;
  --success-bg:     #d1fae5;
  --warning:        #f59e0b;
  --warning-bg:     #fef3c7;
  --danger:         #ef4444;
  --danger-bg:      #fee2e2;
  --info:           #3b82f6;
  --info-bg:        #dbeafe;

  --shadow-sm:      0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:      0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg:      0 8px 32px rgba(0,0,0,0.10);
  --shadow-xl:      0 16px 48px rgba(0,0,0,0.12);
  --shadow-focus:   0 0 0 3px rgba(99,102,241,0.25);

  --r-sm:           8px;
  --r-md:           12px;
  --r-lg:           16px;
  --r-xl:           20px;
  --r-2xl:          24px;

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

[data-theme="dark"] {
  --primary:        #818cf8;
  --primary-dark:   #6366f1;
  --primary-light:  #1e1b4b;
  --primary-glow:   rgba(129,140,248,0.15);

  --bg:             #0f172a;
  --bg-alt:         #1e293b;
  --surface:        #1e293b;
  --surface-2:      #0f172a;
  --border:         #334155;
  --border-focus:   #818cf8;

  --text:           #ffffff;
  --text-2:         #e2e8f0;
  --text-3:         #94a3b8;
  --placeholder:    #64748b;

  --success-bg:     #064e3b;
  --warning-bg:     #451a03;
  --danger-bg:      #450a0a;
  --info-bg:        #1e3a5f;

  --shadow-sm:      0 1px 3px rgba(0,0,0,0.3);
  --shadow-md:      0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg:      0 8px 32px rgba(0,0,0,0.5);
  --shadow-xl:      0 16px 48px rgba(0,0,0,0.6);
  --shadow-focus:   0 0 0 3px rgba(129,140,248,0.25);
}

/* ─── Reset & Base ──────────────────────────────────────────────── */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { font-size:16px; scroll-behavior:smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
  transition: background var(--transition), color var(--transition);
}

/* ─── Page Shell ────────────────────────────────────────────────── */
.reg-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
}

/* ─── Top Bar ───────────────────────────────────────────────────── */
.reg-topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

.reg-topbar .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 1rem;
}

.reg-topbar .brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  object-fit: contain;
  background: var(--primary-light);
  padding: 4px;
}

.reg-topbar .brand-sub {
  color: var(--text-3);
  font-weight: 400;
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 6px 10px;
  cursor: pointer;
  color: var(--text-2);
  font-size: 1rem;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}
.theme-toggle:hover { background: var(--bg-alt); color: var(--text); }
.theme-toggle .icon-sun  { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="dark"] .theme-toggle .icon-sun  { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* ─── Preview Banner ────────────────────────────────────────────── */
.preview-banner {
  background: linear-gradient(135deg, #FF6B35, #F7931E);
  color: #fff;
  padding: 10px 24px;
  text-align: center;
  font-size: 0.875rem;
  font-weight: 600;
}

/* ─── Main Layout ───────────────────────────────────────────────── */
.reg-main {
  flex: 1;
  padding: 32px 16px 64px;
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
}

/* ─── Page Header ───────────────────────────────────────────────── */
.reg-header {
  text-align: center;
  margin-bottom: 32px;
}
.reg-header h1 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}
.reg-header h1 i {
  color: var(--primary);
  margin-right: 8px;
}
.reg-header p {
  color: var(--text-2);
  font-size: 0.95rem;
}

/* Chat CTA */
.chat-cta {
  display: flex;
  justify-content: center;
  margin-top: 12px;
}
.chat-cta__button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.chat-cta__button:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.chat-cta__button .arrow { margin-left: 2px; }

/* ─── Registration Card ─────────────────────────────────────────── */
.registration-container {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-2xl);
  padding: 36px 40px;
  box-shadow: var(--shadow-lg);
  transition: background var(--transition), border-color var(--transition);
  overflow: visible;
}

/* ─── Progress Bar ──────────────────────────────────────────────── */
.progress-bar {
  width: 100%;
  height: 4px;
  background: var(--border);
  border-radius: 4px;
  margin-bottom: 28px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--primary-dark));
  border-radius: 4px;
  transition: width 0.4s cubic-bezier(0.4,0,0.2,1);
}

/* ─── Step Indicators ───────────────────────────────────────────── */
.step-indicators {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin-bottom: 32px;
  position: relative;
}

.step-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  flex: 1;
  max-width: 140px;
  position: relative;
  cursor: default;
}

/* Connector line between steps */
.step-indicator:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 16px;
  left: calc(50% + 18px);
  right: calc(-50% + 18px);
  height: 2px;
  background: var(--border);
  transition: background var(--transition);
}
.step-indicator.completed:not(:last-child)::after {
  background: var(--primary);
}

.step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: var(--surface);
  color: var(--text-3);
  font-size: 0.875rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  position: relative;
  z-index: 1;
}

.step-indicator span {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-3);
  text-align: center;
  transition: color var(--transition);
  max-width: 80px;
  line-height: 1.3;
}

/* Active step */
.step-indicator.active .step-number {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 0 0 4px var(--primary-glow);
}
.step-indicator.active span { color: var(--primary); font-weight: 600; }

/* Completed step */
.step-indicator.completed .step-number {
  background: var(--success);
  border-color: var(--success);
  color: #fff;
}
.step-indicator.completed span { color: var(--success); }

/* Step label */
.step-label { font-size: 0.72rem; font-weight: 500; }

/* ─── Step Content ──────────────────────────────────────────────── */
.step-content { position: relative; }

.step {
  display: none;
  animation: stepFadeIn 0.25s ease;
}
.step.active { display: block; }

@keyframes stepFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.step h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.step-description {
  color: var(--text-2);
  font-size: 0.9rem;
  margin-bottom: 24px;
  line-height: 1.5;
}

/* ─── Form Grid ─────────────────────────────────────────────────── */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px 20px;
  margin-bottom: 24px;
}

/* ─── Form Groups ───────────────────────────────────────────────── */
.form-group {
  position: relative;
  overflow: visible;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
  transition: color var(--transition);
}
.form-label.required::after {
  content: ' *';
  color: var(--danger);
  font-weight: 700;
}

/* ─── Inputs, Selects, Textareas ────────────────────────────────── */
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  background: var(--surface);
  color: var(--text);
  font-size: 0.95rem;
  font-family: 'Inter', sans-serif;
  font-weight: 400;
  line-height: 1.5;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
  outline: none;
  min-height: 44px;
  /* Override glassmorphism */
  -webkit-text-fill-color: unset !important;
  text-shadow: none !important;
  backdrop-filter: none !important;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--placeholder);
  font-weight: 400;
  -webkit-text-fill-color: unset !important;
}

.form-select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%2394a3b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 1.1rem;
  padding-right: 38px;
  cursor: pointer;
}

[data-theme="dark"] .form-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%2394a3b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
}

.form-select option {
  background: var(--surface);
  color: var(--text);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
  overflow: auto;
}

/* Focus */
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--primary);
  box-shadow: var(--shadow-focus);
  background: var(--surface);
  -webkit-text-fill-color: unset !important;
}

/* Hover */
.form-input:hover:not(:focus),
.form-select:hover:not(:focus),
.form-textarea:hover:not(:focus) {
  border-color: var(--text-3);
}

/* Error state */
.form-group.error .form-input,
.form-group.error .form-select,
.form-group.error .form-textarea {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(239,68,68,0.15);
}

/* Autofill override */
.form-input:-webkit-autofill,
.form-input:-webkit-autofill:hover,
.form-input:-webkit-autofill:focus {
  -webkit-box-shadow: 0 0 0 1000px var(--surface) inset !important;
  -webkit-text-fill-color: var(--text) !important;
  caret-color: var(--text);
  border-color: var(--border);
}

/* Form Help & Error */
.form-help {
  font-size: 0.78rem;
  color: var(--text-3);
  margin-top: 5px;
  line-height: 1.4;
  background: none;
  border: none;
  padding: 0;
  text-shadow: none;
  backdrop-filter: none;
}

.error-message {
  font-size: 0.78rem;
  color: var(--danger);
  margin-top: 5px;
  display: none;
  font-weight: 500;
}
.form-group.error .error-message { display: block; }

.success-message {
  font-size: 0.78rem;
  color: var(--success);
  margin-top: 5px;
  font-weight: 500;
}

/* Phone format hint */
.phone-format-hint {
  font-size: 0.75rem;
  color: var(--text-3);
  margin-top: 4px;
  background: none;
  border: none;
  padding: 0;
  backdrop-filter: none;
}

/* Phone input container */
.phone-input-container {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  flex-wrap: wrap;
}

/* Country search */
#countrySearch {
  width: 100%;
  padding: 8px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  background: var(--surface);
  color: var(--text);
  font-size: 0.875rem;
  margin-bottom: 6px;
  outline: none;
  transition: border-color var(--transition);
  -webkit-text-fill-color: unset !important;
}
#countrySearch:focus { border-color: var(--primary); box-shadow: var(--shadow-focus); }
#countrySearch::placeholder { color: var(--placeholder); }

/* Password Strength */
.password-strength {
  height: 4px;
  background: var(--border);
  border-radius: 4px;
  margin-top: 8px;
  overflow: hidden;
}
.password-strength-bar {
  height: 100%;
  border-radius: 4px;
  transition: width 0.3s, background 0.3s;
  width: 0;
}
.strength-weak   { background: var(--danger); width: 25%; }
.strength-fair   { background: var(--warning); width: 50%; }
.strength-good   { background: #84cc16; width: 75%; }
.strength-strong { background: var(--success); width: 100%; }

.strength-text { font-size: 0.75rem; font-weight: 600; }
.match-text    { font-size: 0.75rem; font-weight: 600; }

/* ─── VIP / Staff Code ──────────────────────────────────────────── */
#vip-code-group,
#staff-code-group,
#vip-code-group-step2 {
  background: var(--info-bg);
  border: 1px solid rgba(59,130,246,0.3);
  border-radius: var(--r-lg);
  padding: 16px;
  grid-column: 1 / -1;
}

/* ─── Profile Photo Upload ──────────────────────────────────────── */
.profile-photo-upload,
.file-upload-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 28px 20px;
  border: 2px dashed var(--border);
  border-radius: var(--r-lg);
  background: var(--surface-2);
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
  min-height: 140px;
  max-height: 180px;
  color: var(--text-2);
}
.profile-photo-upload:hover,
.file-upload-label:hover {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary);
}
.profile-photo-upload i,
.file-upload-label i {
  font-size: 2rem;
  color: var(--primary);
}
.profile-photo-upload .upload-icon { animation: floatIcon 3s ease-in-out infinite; }
@keyframes floatIcon {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-6px); }
}

.profile-photo-input { display: none !important; }
.preview-image {
  width: 64px !important; height: 64px !important;
  border-radius: 50% !important;
  object-fit: cover !important;
  border: 2px solid var(--primary) !important;
  box-shadow: var(--shadow-sm) !important;
  display: block !important;
  margin: 0 auto !important;
}
.remove-photo {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(239,68,68,0.25);
  border-radius: var(--r-sm);
  padding: 4px 10px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all var(--transition);
}
.remove-photo:hover { background: var(--danger); color: #fff; }

/* File upload label full */
.file-upload-label.has-preview { min-height: 110px !important; max-height: 130px !important; padding: 14px !important; }
.file-upload-label.has-preview .file-upload-text,
.file-upload-label.has-preview .file-upload-info,
.file-upload-label.has-preview .file-upload-icon { display: none !important; }

/* ─── Alert Banners ─────────────────────────────────────────────── */
.alert {
  padding: 12px 16px;
  border-radius: var(--r-md);
  margin-bottom: 16px;
  font-size: 0.875rem;
  display: none;
  border: 1px solid transparent;
  line-height: 1.5;
  animation: alertSlide 0.25s ease;
}
.alert.show { display: block; }
@keyframes alertSlide {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.alert-success { background: var(--success-bg); color: var(--success); border-color: rgba(16,185,129,0.3); }
.alert-error   { background: var(--danger-bg);  color: var(--danger);  border-color: rgba(239,68,68,0.3); }
.alert-warning { background: var(--warning-bg); color: var(--warning); border-color: rgba(245,158,11,0.3); }
.alert-info    { background: var(--info-bg);    color: var(--info);    border-color: rgba(59,130,246,0.3); }

/* ─── Profile Guard Note ────────────────────────────────────────── */
#profileGuardNote {
  background: var(--info-bg) !important;
  border: 1px solid rgba(59,130,246,0.3) !important;
  border-radius: var(--r-md) !important;
  padding: 14px 16px !important;
  grid-column: 1 / -1;
}
#profileLoginCta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--primary);
  color: #fff !important;
  border-radius: var(--r-md);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition);
}
#profileLoginCta:hover { background: var(--primary-dark); transform: translateY(-1px); }

/* ─── Session Selection ─────────────────────────────────────────── */
.timezone-note {
  color: var(--text-3);
  font-size: 0.8rem;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.timezone-note i { color: var(--primary); }

/* Session Rules Banner */
.session-rules-banner {
  background: var(--info-bg);
  border: 1px solid rgba(59,130,246,0.25);
  border-radius: var(--r-lg);
  padding: 16px 20px;
  margin-bottom: 20px;
}
.session-rules-banner h4 {
  color: var(--info);
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.session-rules-banner ul {
  margin: 0;
  padding-left: 20px;
  color: var(--text-2);
  font-size: 0.875rem;
  line-height: 1.6;
}
.session-rules-banner li { margin-bottom: 4px; }

/* Sessions Loading */
.sessions-loading {
  text-align: center;
  padding: 40px;
  color: var(--text-3);
}
.sessions-loading .loading-spinner {
  width: 32px; height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin: 0 auto 12px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Sessions Grid */
.sessions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

/* Session Card */
.session-card {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: all var(--transition);
  cursor: pointer;
}
.session-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.session-card.selected {
  border-color: var(--primary);
  background: var(--primary-light);
}
[data-theme="dark"] .session-card.selected {
  background: rgba(99,102,241,0.1);
}
.session-card.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.session-card.disabled:hover { transform: none; box-shadow: none; border-color: var(--border); }
.session-card.conflict {
  border-color: var(--danger);
  background: var(--danger-bg);
}

.session-card-content { padding: 20px; }

.session-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 8px;
  line-height: 1.3;
}

.session-capacity-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--info-bg);
  color: var(--info);
  border: 1px solid rgba(59,130,246,0.25);
}
.session-capacity-badge.limited { background: var(--warning-bg); color: var(--warning); border-color: rgba(245,158,11,0.25); }
.session-capacity-badge.full    { background: var(--danger-bg);  color: var(--danger);  border-color: rgba(239,68,68,0.25); }

.session-description {
  color: var(--text-2);
  font-size: 0.875rem;
  line-height: 1.5;
  margin: 8px 0 12px;
}

.session-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px; }
.time-primary, .time-secondary, .location-item, .capacity-item,
.provider-item, .notes-item, .access-item {
  display: flex;
  align-items: flex-start;
  gap: 7px;
  font-size: 0.85rem;
  color: var(--text-2);
}
.time-primary i  { color: var(--primary); width: 14px; margin-top: 2px; }
.location-item i { color: var(--primary); width: 14px; margin-top: 2px; }
.time-secondary i, .capacity-item i { color: var(--text-3); width: 14px; margin-top: 2px; }
.provider-item i { color: var(--success); width: 14px; margin-top: 2px; }
.notes-item i    { color: var(--warning); width: 14px; margin-top: 2px; }
.access-item i   { color: var(--primary); width: 14px; margin-top: 2px; }

.session-provider-info,
.session-notes-info,
.session-access-info {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}
.session-access-info {
  background: var(--info-bg);
  border-radius: var(--r-sm);
  padding: 10px 12px;
  border: 1px solid rgba(59,130,246,0.2);
}
.provider-label, .notes-label, .access-label { font-weight: 600; color: var(--text-2); font-size: 0.8rem; }
.provider-name  { font-weight: 600; color: var(--success); font-size: 0.85rem; }
.notes-text     { color: var(--text-2); font-size: 0.85rem; line-height: 1.5; }
.access-roles   { color: var(--primary); font-weight: 500; font-size: 0.85rem; line-height: 1.5; }

/* Session alerts */
.session-alert {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 12px 14px;
  margin-bottom: 12px;
  display: flex;
  gap: 10px;
  font-size: 0.85rem;
}
.session-alert.alert-restricted { background: var(--danger-bg);  border-color: rgba(239,68,68,0.25); }
.session-alert.alert-conflict   { background: var(--warning-bg); border-color: rgba(245,158,11,0.25); }
.alert-icon { color: var(--text-3); font-size: 1rem; }
.alert-restricted .alert-icon { color: var(--danger); }
.alert-conflict   .alert-icon { color: var(--warning); }
.alert-content h5 { margin: 0 0 3px; font-size: 0.85rem; font-weight: 700; color: var(--text); }
.alert-content p  { margin: 0; font-size: 0.8rem; color: var(--text-2); line-height: 1.4; }
.alert-content .access-note { font-style: italic; color: var(--text-3); font-size: 0.78rem; margin-top: 4px; }

/* Session selection footer */
.session-selection {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  background: var(--surface-2);
}
.session-checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  transition: color var(--transition);
}
.session-checkbox-label:hover { color: var(--primary); }
.session-checkbox-label.disabled { opacity: 0.5; cursor: not-allowed; }
.session-checkbox-input { display: none; }
.session-checkbox-custom {
  width: 18px; height: 18px;
  border: 2px solid var(--border);
  border-radius: 4px;
  background: var(--surface);
  position: relative;
  transition: all var(--transition);
  flex-shrink: 0;
}
.session-checkbox-input:checked + .session-checkbox-custom {
  background: var(--primary);
  border-color: var(--primary);
}
.session-checkbox-input:checked + .session-checkbox-custom::after {
  content: '';
  position: absolute;
  top: 2px; left: 5px;
  width: 5px; height: 9px;
  border: 2px solid #fff;
  border-top: none; border-left: none;
  transform: rotate(45deg);
}

.session-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}
.session-status-badge.status-available  { background: var(--success-bg); color: var(--success); }
.session-status-badge.status-full       { background: var(--danger-bg);  color: var(--danger); }
.session-status-badge.status-restricted { background: var(--warning-bg); color: var(--warning); }

/* Selection Summary */
.selection-summary {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 18px 20px;
  margin-top: 20px;
}
.selection-summary h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.selection-summary h4 i { color: var(--primary); }

.selected-session-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  background: var(--primary-light);
  border: 1px solid rgba(99,102,241,0.2);
  border-radius: var(--r-sm);
  margin-bottom: 8px;
}
[data-theme="dark"] .selected-session-item { background: rgba(99,102,241,0.1); }
.selected-session-name { font-weight: 600; color: var(--text); font-size: 0.9rem; }
.selected-session-time { font-size: 0.8rem; color: var(--text-2); }
.remove-session {
  background: none;
  border: none;
  color: var(--danger);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--r-sm);
  font-size: 0.85rem;
  transition: background var(--transition);
}
.remove-session:hover { background: var(--danger-bg); }

/* Conflict Warnings */
.conflict-warnings {
  background: var(--warning-bg);
  border: 1px solid rgba(245,158,11,0.3);
  border-radius: var(--r-lg);
  padding: 16px 20px;
  margin-top: 16px;
}
.conflict-warnings h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--warning);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.conflict-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  background: var(--surface);
  border-radius: var(--r-sm);
  margin-bottom: 6px;
  font-size: 0.85rem;
  color: var(--text-2);
}
.conflict-item i { color: var(--warning); }

/* No sessions */
.no-sessions {
  text-align: center;
  padding: 40px;
  color: var(--text-3);
}
.no-sessions p { margin: 0; }

/* Session capacity badge inside session header */
.session-capacity {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  background: var(--info-bg);
  color: var(--info);
  white-space: nowrap;
}
.session-capacity.limited { background: var(--warning-bg); color: var(--warning); }
.session-capacity.full    { background: var(--danger-bg);  color: var(--danger); }

/* Session restrictions */
.session-restrictions {
  background: var(--warning-bg);
  border: 1px solid rgba(245,158,11,0.25);
  border-radius: var(--r-md);
  padding: 10px 14px;
  margin-bottom: 12px;
  font-size: 0.85rem;
}
.session-restrictions h5 { margin: 0 0 6px; color: var(--warning); font-size: 0.85rem; font-weight: 700; }
.restriction-item { display: flex; align-items: center; gap: 8px; color: var(--text-2); margin-bottom: 4px; }
.restriction-item i { color: var(--warning); width: 14px; }

/* ─── Review Section ────────────────────────────────────────────── */
.review-section {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 20px;
  margin-bottom: 16px;
}
.review-section h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
  background: none;
  border-radius: 0;
  backdrop-filter: none;
  text-shadow: none;
}
.review-item {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
  color: var(--text);
  background: none;
  text-shadow: none;
}
.review-item:last-child { border-bottom: none; }
.review-item strong { color: var(--text-2); font-weight: 500; min-width: 120px; }

/* ─── Terms Checkbox ────────────────────────────────────────────── */
.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 14px 16px;
  margin: 20px 0;
  cursor: pointer;
}
.checkbox-group input[type="checkbox"] {
  width: 16px; height: 16px;
  margin-top: 1px;
  accent-color: var(--primary);
  flex-shrink: 0;
  cursor: pointer;
}
.checkbox-group label {
  font-size: 0.875rem;
  color: var(--text-2);
  cursor: pointer;
  line-height: 1.5;
  text-shadow: none;
}

/* ─── Navigation Buttons ────────────────────────────────────────── */
.navigation-buttons,
.button-group {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border: 1.5px solid transparent;
  border-radius: var(--r-md);
  font-size: 0.9rem;
  font-weight: 600;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  min-height: 42px;
  min-width: 100px;
  backdrop-filter: none;
  text-shadow: none;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.btn:active   { transform: scale(0.97); }

.btn-primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); box-shadow: var(--shadow-md); transform: translateY(-1px); }

.btn-secondary {
  background: var(--surface);
  color: var(--text-2);
  border-color: var(--border);
}
.btn-secondary:hover { background: var(--bg-alt); color: var(--text); transform: translateY(-1px); }

/* Loading spinner on submit button */
.btn .loading-spinner {
  display: none;
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  margin-right: 4px;
}
.btn.loading .loading-spinner { display: block; }

/* ─── Session restrictions banner (multi-step inline) ────────────── */
.session-rules-banner {
  background: var(--info-bg);
  border: 1px solid rgba(59,130,246,0.25);
  border-radius: var(--r-lg);
  padding: 16px 20px;
  margin-bottom: 20px;
}
.session-rules-banner .rules-content h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--info);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ─── Role Change Notification ──────────────────────────────────── */
@keyframes slideInRight {
  from { transform: translateX(400px); opacity: 0; }
  to   { transform: translateX(0); opacity: 1; }
}
@keyframes slideOutRight {
  from { transform: translateX(0); opacity: 1; }
  to   { transform: translateX(400px); opacity: 0; }
}

/* ─── Error message animation ───────────────────────────────────── */
.error-message.show { display: block; animation: errorShake 0.3s ease; }
@keyframes errorShake {
  0%, 100% { transform: translateX(0); }
  25%       { transform: translateX(-4px); }
  75%       { transform: translateX(4px); }
}

/* ─── Dividers & Separators ─────────────────────────────────────── */
hr { border: none; border-top: 1px solid var(--border); margin: 24px 0; }

/* ─── Responsive ────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .registration-container { padding: 28px 28px; }
}

@media (max-width: 768px) {
  .reg-main { padding: 20px 12px 48px; }
  .registration-container { padding: 20px 16px; border-radius: var(--r-xl); }
  .form-grid { grid-template-columns: 1fr; gap: 12px; }
  .navigation-buttons, .button-group {
    flex-direction: column-reverse;
    gap: 8px;
  }
  .btn { width: 100%; }
  .step-indicators { gap: 2px; }
  .step-indicator span { font-size: 0.65rem; max-width: 65px; }
  .sessions-grid { grid-template-columns: 1fr; }
  .session-meta { grid-template-columns: 1fr; }
  .session-selection { flex-direction: column; align-items: flex-start; }
  .review-item { flex-direction: column; gap: 2px; }
  .review-item strong { min-width: unset; }
}

@media (max-width: 480px) {
  .reg-topbar { padding: 0 16px; }
  .reg-main { padding: 16px 8px 40px; }
  .registration-container { padding: 16px 12px; border-radius: var(--r-lg); }
  .step h2 { font-size: 1.15rem; }
  .step-number { width: 28px; height: 28px; font-size: 0.8rem; }
  .form-input, .form-select, .form-textarea { font-size: 16px; } /* prevent iOS zoom */
}

@media (max-width: 360px) {
  .step-indicator span { display: none; }
  .step-number { width: 26px; height: 26px; font-size: 0.75rem; }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
  .btn, .form-input, .form-select, .form-textarea { min-height: 48px; }
  .session-card:hover { transform: none; }
  .session-card:active { transform: scale(0.99); }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* High contrast */
@media (prefers-contrast: high) {
  .form-input, .form-select, .form-textarea { border-width: 2px; }
}

/* Print */
@media print {
  .reg-topbar, .navigation-buttons, .button-group, .progress-bar, .step-indicators { display: none; }
  .registration-container { box-shadow: none; border: 1px solid #ccc; }
}

/* ─── Single-page registration overrides ────────────────────────── */
/* single-page shows ALL steps at once, hides nav/progress */
body.reg-single .progress-bar { display: none; }
body.reg-single .step-indicators { display: none; }
body.reg-single .navigation-buttons { display: none; }
body.reg-single .step { display: block !important; margin-bottom: 32px; }
body.reg-single .step h2 { 
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary-light);
  margin-bottom: 16px;
}
body.reg-single .submit-section {
  display: block;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  text-align: center;
}

/* ─── Dynamic card steps ─────────────────────────────────────────── */
.card-section {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 20px;
  margin-bottom: 16px;
}
.card-section h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
  background: none;
  border-radius: 0;
  padding: 0;
  border: none;
  text-shadow: none;
}