/* ==========================================================================
   Layout, Header, Tabs, Buttons & UI Controls
   ========================================================================== */

#app-container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 1.5rem 3rem 1.5rem;
}

/* Header & Navigation */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 2rem;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, #0284c7, #0d9488);
  color: #ffffff;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}

.brand-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.badge-pro {
  font-size: 0.65rem;
  padding: 0.15rem 0.45rem;
  background: var(--accent-primary);
  color: #0f172a;
  font-weight: 800;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}

.brand-subtitle {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Nav Tabs */
.nav-tabs {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--bg-surface-1);
  padding: 0.35rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  overflow-x: auto;
}

.nav-tab {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 0.95rem;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.nav-tab:hover {
  color: var(--text-primary);
  background: var(--bg-surface-2);
}

.nav-tab.active {
  background: var(--accent-primary);
  color: #0f172a;
  font-weight: 700;
}

.theme-toggle-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface-1);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.theme-toggle-btn:hover {
  background: var(--bg-surface-2);
}

/* Common Form Controls */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label, .control-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  margin-bottom: 0.45rem;
}

input[type="text"],
input[type="number"],
input[type="email"],
input[type="url"],
select,
textarea {
  width: 100%;
  padding: 0.7rem 0.9rem;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.92rem;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.form-grid .full-width {
  grid-column: 1 / -1;
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-sm-danger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: transform var(--transition-fast), background var(--transition-fast), opacity var(--transition-fast);
}

.btn-primary {
  background: var(--accent-primary);
  color: #0f172a;
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: #ffffff;
}

.btn-secondary {
  background: var(--bg-surface-2);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
}
.btn-secondary:hover {
  background: var(--bg-surface-3);
}

.btn-sm-danger {
  background: rgba(239, 68, 68, 0.15);
  color: var(--status-error);
  border: 1px solid rgba(239, 68, 68, 0.3);
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
}
.btn-sm-danger:hover {
  background: var(--status-error);
  color: #ffffff;
}

.btn-primary:disabled, .btn-secondary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-lg {
  padding: 0.9rem 1.75rem;
  font-size: 1rem;
}

.btn-link {
  background: none;
  border: none;
  color: var(--accent-primary);
  cursor: pointer;
  font-size: 0.85rem;
  text-decoration: underline;
}

/* Toast Container */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.toast {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.2rem;
  background: var(--bg-surface-2);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 500;
  transform: translateY(20px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast-show {
  transform: translateY(0);
  opacity: 1;
}

.toast-hide {
  transform: translateY(-20px);
  opacity: 0;
}

.toast-success .toast-icon { color: var(--status-success); }
.toast-error .toast-icon { color: var(--status-error); }
.toast-info .toast-icon { color: var(--accent-primary); }

/* ==========================================================================
   vCard Business Card Wizard Styles
   ========================================================================== */

.wizard-card {
  margin-bottom: 2rem;
}

.wizard-nav {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.75rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.wiz-tab {
  padding: 0.6rem 1.1rem;
  font-size: 0.88rem;
  font-weight: 600;
  background: var(--bg-surface-2);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.wiz-tab.active {
  background: var(--accent-primary);
  color: #0f172a;
  border-color: var(--accent-primary);
}

.vcard-wizard-container {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.vcard-section {
  background: var(--bg-surface-2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.vcard-section-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.custom-fields-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn-sm {
  padding: 0.45rem 0.85rem;
  font-size: 0.82rem;
}

.custom-fields-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.custom-field-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.custom-field-row .cf-key {
  flex: 1;
  min-width: 140px;
}

.custom-field-row .cf-val {
  flex: 2;
  min-width: 180px;
}

.empty-cf-hint {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: italic;
  padding: 0.5rem 0;
}

.wizard-footer {
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: flex-end;
}