/* Omnithium v2 - Premium UI Styles */

/* =====================================
     LOADING SCREEN
     ===================================== */
.loading-screen {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-loading);
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading-content {
  text-align: center;
  animation: fadeIn var(--transition-normal);
}

.loading-logo {
  margin-bottom: var(--spacing-lg);
}

.logo-icon {
  width: 80px;
  height: 80px;
  animation: pulse 2s ease-in-out infinite;
}

.loading-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.loading-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
}

.loading-spinner {
  display: flex;
  justify-content: center;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-gray-200);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.spinner-small {
  width: 16px;
  height: 16px;
  border: 2px solid var(--color-gray-300);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* =====================================
     APP LAYOUT
     ===================================== */
.app-container {
  display: flex;
  min-height: 100vh;
  background: var(--bg-primary);
}

.app-container.hidden {
  display: none;
}

/* =====================================
     SIDEBAR
     ===================================== */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-card);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: var(--z-sticky);
  transition: transform var(--transition-normal), width var(--transition-normal);
}

.sidebar.hidden {
  transform: translateX(-100%);
}

.sidebar-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.logo-icon-small {
  width: 36px;
  height: 36px;
}

.logo-text {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
}

/* Navigation */
.sidebar-nav {
  flex: 1;
  padding: var(--spacing-md);
  overflow-y: auto;
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.nav-item.active {
  background: var(--color-primary);
  color: var(--text-inverse);
}

.nav-icon {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.nav-item span {
  font-weight: var(--font-weight-medium);
}

/* Sidebar Footer */
.sidebar-footer {
  padding: var(--spacing-md);
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.user-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex: 1;
  min-width: 0;
}

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: var(--text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-semibold);
  flex-shrink: 0;
}

.user-details {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.user-name {
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-type {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  text-transform: capitalize;
}

.btn-logout {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.btn-logout:hover {
  background: var(--color-error-light);
  color: var(--color-error);
}

.btn-logout svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* =====================================
     MAIN CONTENT
     ===================================== */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.main-header {
  height: var(--header-height);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  padding: 0 var(--spacing-lg);
  gap: var(--spacing-md);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}

.btn-menu {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
}

.btn-menu:hover {
  background: var(--bg-hover);
}

.btn-menu svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

.header-title {
  flex: 1;
}

.header-title h1 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Language Selector */
.language-selector select {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  cursor: pointer;
}

/* Notifications */
.btn-notification {
  position: relative;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.btn-notification:hover {
  background: var(--bg-hover);
}

.btn-notification svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

.notification-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  min-width: 18px;
  height: 18px;
  background: var(--color-error);
  color: var(--text-inverse);
  font-size: 11px;
  font-weight: var(--font-weight-bold);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
}

.notification-badge.hidden {
  display: none;
}

/* Page Content */
.page-content {
  flex: 1;
  padding: var(--spacing-xl);
  overflow-y: auto;
}

/* =====================================
     LOGIN PAGE
     ===================================== */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
  padding: var(--spacing-lg);
}

.login-page.hidden {
  display: none;
}

.login-container,
.register-container {
  width: 100%;
  max-width: 420px;
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: var(--spacing-2xl);
  animation: slideInUp var(--transition-spring);
}

.register-container.hidden {
  display: none;
}

.login-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.login-logo {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-md);
}

.login-header h1 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-sm);
}

.login-header p {
  color: var(--text-secondary);
  margin: 0;
}

/* Login Form */
.login-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form-group label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
}

.form-group input,
.form-group select {
  padding: var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
  outline: none;
}

.form-group input::placeholder {
  color: var(--text-muted);
}

.input-hint {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.password-input {
  position: relative;
}

.password-input input {
  width: 100%;
  padding-right: 48px;
}

.btn-toggle-password {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-toggle-password:hover {
  color: var(--text-secondary);
}

.btn-toggle-password svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.form-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
}

.forgot-link {
  font-size: var(--font-size-sm);
  color: var(--text-link);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--text-inverse);
}

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

.btn-primary:active {
  transform: translateY(0);
}

.btn-block {
  width: 100%;
}

.btn-loading {
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-loading.hidden {
  display: none;
}

.login-error {
  padding: var(--spacing-md);
  background: var(--color-error-light);
  color: var(--color-error);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
}

.login-error.hidden {
  display: none;
}

.login-footer {
  text-align: center;
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
}

.login-footer p {
  color: var(--text-secondary);
  margin: 0;
}

.login-footer a {
  color: var(--text-link);
  font-weight: var(--font-weight-medium);
}

/* =====================================
     TOAST NOTIFICATIONS
     ===================================== */
.toast-container {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  z-index: var(--z-toast);
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--color-primary);
  animation: slideInRight var(--transition-normal);
  max-width: 400px;
}

.toast-success {
  border-left-color: var(--color-success);
}

.toast-error {
  border-left-color: var(--color-error);
}

.toast-warning {
  border-left-color: var(--color-warning);
}

.toast-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  fill: currentColor;
}

.toast-content {
  flex: 1;
}

.toast-title {
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.toast-message {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.toast-close {
  width: 24px;
  height: 24px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.toast-close:hover {
  color: var(--text-secondary);
}

/* =====================================
     MODAL
     ===================================== */
.modal-container {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  z-index: var(--z-modal);
  animation: fadeIn var(--transition-fast);
}

.modal-container.hidden {
  display: none;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.modal {
  position: relative;
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: scaleIn var(--transition-spring);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
  font-size: var(--font-size-lg);
}

.btn-close-modal {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.btn-close-modal:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.btn-close-modal svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.modal-body {
  flex: 1;
  padding: var(--spacing-lg);
  overflow-y: auto;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
}