/* ==========================================================================
   LedgerDock Base Layout - static/css/base.css
   Core layout, sidebar, app structure, and flash messages
   ========================================================================== */

/* CSS Variables */
:root {
  /* Brand Colors */
  --color-primary: #324E5D;
  --color-primary-light: #436D82;
  --color-primary-dark: #1E3540;
  --color-secondary: #F16923;
  --color-secondary-light: #F38654;

  /* Neutral Colors */
  --color-bg: #FDFBF6;
  --color-surface: #F8F4E8;
  --color-border: #EDE7D6;
  --color-text-primary: #324E5D;
  --color-text-secondary: #436D82;
  --color-text-tertiary: #6C8999;

  /* Semantic Colors */
  --color-success: #43A047;
  --color-warning: #E5A226;
  --color-error: #D13636;
  --color-info: #5C88DA;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  /* Layout */
  --sidebar-width: 240px;
  --sidebar-collapsed-width: 64px;
  --header-height: 64px;
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
  --box-shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.12);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
}

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

html, body {
  height: 100%;
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* App Container */
.app-container {
  display: flex;
  height: 100vh;
  width: 100%;
  position: relative;
}

/* Sidebar */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background-color: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: width var(--transition-normal), transform var(--transition-normal);
  box-shadow: var(--box-shadow);
}

.sidebar__logo {
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0 var(--space-lg);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  border-bottom: 1px solid var(--color-border);
}

.sidebar__logo i {
  margin-right: var(--space-sm);
}

.sidebar__nav {
  flex: 1;
  padding: var(--space-lg) 0;
  overflow-y: auto;
}

.sidebar__nav-item {
  display: flex;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast);
  border-left: 3px solid transparent;
}

.sidebar__nav-item i {
  width: 20px;
  margin-right: var(--space-md);
  font-size: var(--font-size-lg);
}

.sidebar__nav-item:hover {
  background-color: rgba(57, 73, 171, 0.08);
  color: var(--color-primary);
}

.sidebar__nav-item.active {
  background-color: rgba(57, 73, 171, 0.12);
  color: var(--color-primary);
  border-left-color: var(--color-primary);
}

.sidebar__footer {
  padding: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

/* Theme Toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.switch {
  position: relative;
  display: inline-block;
  width: 40px;
  height: 20px;
  margin: 0 var(--space-sm);
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  transition: var(--transition-fast);
}

.slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 2px;
  bottom: 2px;
  background-color: white;
  transition: var(--transition-fast);
}

input:checked + .slider {
  background-color: var(--color-primary);
}

input:checked + .slider:before {
  transform: translateX(20px);
}

.slider.round {
  border-radius: 34px;
}

.slider.round:before {
  border-radius: 50%;
}

/* Menu Toggle Button */
.menu-toggle {
  display: none; /* Hidden on desktop */
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: 1.25rem;
  cursor: pointer;
  padding: var(--space-sm);
  border-radius: var(--border-radius-sm);
  transition: background-color var(--transition-fast);
  min-width: 44px; /* Touch-friendly minimum size */
  height: 44px;
  justify-content: center;
  align-items: center;
}

.menu-toggle:hover {
  background-color: rgba(0, 0, 0, 0.05);
}

.menu-toggle:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Main Content */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left var(--transition-normal);
}

.content {
  flex: 1;
  padding: var(--space-xl);
  min-height: 0;
  overflow: auto;
}

/* Footer */
.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-xl);
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
}

.footer__left {
  display: flex;
  align-items: center;
}

.footer__right {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.footer__company,
.footer__mode {
  font-family: monospace;
  background-color: var(--color-bg);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--color-border);
  font-size: var(--font-size-xs);
}

.footer__link {
  color: var(--color-text-secondary);
  text-decoration: none;
}

.footer__link:hover {
  color: var(--color-primary);
}

.footer__divider {
  color: var(--color-border);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-md);
  padding: var(--space-sm) var(--space-md);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  background-color: var(--color-primary);
  color: white;
  text-decoration: none;
  font-size: var(--font-size-sm);
}

.btn i {
  margin-right: var(--space-sm);
}

.btn:hover {
  background-color: var(--color-primary-dark);
  color: white;
  text-decoration: none;
}

.btn--outline {
  background-color: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.btn--outline:hover {
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  border-color: var(--color-primary-light);
}

.btn--primary {
  background-color: var(--color-primary);
  color: white;
  border: 1px solid var(--color-primary);
}

.btn--primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn:disabled:hover {
  background-color: var(--color-primary);
  color: white;
}

/* Flash Messages */
.flash-messages {
  margin-bottom: var(--space-lg);
}

.alert {
  display: flex;
  align-items: center;
  padding: var(--space-md);
  margin-bottom: var(--space-sm);
  border-radius: var(--border-radius-md);
  position: relative;
  border: 1px solid transparent;
  font-size: var(--font-size-sm);
}

.alert i {
  margin-right: var(--space-sm);
  flex-shrink: 0;
}

.alert-message {
  flex: 1;
}

.alert-close {
  margin-left: var(--space-md);
  background: none;
  border: none;
  cursor: pointer;
  color: inherit;
  padding: var(--space-xs);
  border-radius: var(--border-radius-sm);
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.alert-close:hover {
  opacity: 1;
}

.alert-success {
  background-color: rgba(67, 160, 71, 0.1);
  color: var(--color-success);
  border-color: rgba(67, 160, 71, 0.2);
}

.alert-error {
  background-color: rgba(211, 54, 54, 0.1);
  color: var(--color-error);
  border-color: rgba(211, 54, 54, 0.2);
}

.alert-warning {
  background-color: rgba(229, 162, 38, 0.1);
  color: var(--color-warning);
  border-color: rgba(229, 162, 38, 0.2);
}

.alert-info {
  background-color: rgba(92, 136, 218, 0.1);
  color: var(--color-info);
  border-color: rgba(92, 136, 218, 0.2);
}

/* Mobile Responsive - ENHANCED */
@media (max-width: 768px) {
  /* Show menu toggle on mobile */
  .menu-toggle {
    display: flex;
  }

  /* Hide sidebar by default on mobile */
  .sidebar {
    transform: translateX(-100%);
    z-index: 1000; /* Higher z-index for mobile overlay */
  }

  /* Add overlay when sidebar is open */
  .app-container::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
  }

  /* Show overlay when sidebar is open */
  .app-container.sidebar-open::before {
    opacity: 1;
    visibility: visible;
  }

  /* Show sidebar when open */
  .app-container.sidebar-open .sidebar {
    transform: translateX(0);
  }

  /* Adjust main content on mobile */
  .main-content {
    margin-left: 0;
    width: 100%;
  }

  /* Prevent body scroll when sidebar is open */
  .app-container.sidebar-open {
    overflow: hidden;
  }

  /* Content padding adjustment */
  .content {
    padding: var(--space-md);
  }

  /* Footer adjustments */
  .footer {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
    padding: var(--space-md);
  }

  .footer__right {
    justify-content: center;
  }
}

/* Very small screens */
@media (max-width: 480px) {
  .menu-toggle {
    padding: var(--space-xs);
    min-width: 40px;
    height: 40px;
  }

  .content {
    padding: var(--space-sm);
  }

  .footer {
    padding: var(--space-sm);
  }
}