/* ============================================
   CDD Plus - Energy Cost Optimization AI Dashboard
   Material Design 3 | Glassmorphism | Dark/Light Theme
   ============================================ */

/* ---------- CSS Variables - Dark Theme (Default) ---------- */
:root {
    /* Core Colors - Material Design 3 */
    --md-sys-color-primary: #2ECC71;
    --md-sys-color-primary-container: rgba(46, 204, 113, 0.15);
    --md-sys-color-on-primary: #000000;
    --md-sys-color-on-primary-container: #2ECC71;

    --md-sys-color-secondary: #3498DB;
    --md-sys-color-secondary-container: rgba(52, 152, 219, 0.15);
    --md-sys-color-on-secondary: #000000;
    --md-sys-color-on-secondary-container: #3498DB;

    --md-sys-color-tertiary: #F39C12;
    --md-sys-color-tertiary-container: rgba(243, 156, 18, 0.15);
    --md-sys-color-on-tertiary: #000000;
    --md-sys-color-on-tertiary-container: #F39C12;

    --md-sys-color-error: #E74C3C;
    --md-sys-color-error-container: rgba(231, 76, 60, 0.15);
    --md-sys-color-on-error: #ffffff;
    --md-sys-color-on-error-container: #E74C3C;

    --md-sys-color-success: #27AE60;
    --md-sys-color-warning: #F39C12;
    --md-sys-color-info: #3498DB;

    /* Dark Theme Surface Colors */
    --md-sys-color-background: #121212;
    --md-sys-color-surface: #1E1E1E;
    --md-sys-color-surface-variant: #2D2D2D;
    --md-sys-color-surface-container: rgba(255, 255, 255, 0.05);
    --md-sys-color-surface-container-high: rgba(255, 255, 255, 0.08);
    --md-sys-color-surface-container-highest: rgba(255, 255, 255, 0.12);

    --md-sys-color-on-background: #E1E1E1;
    --md-sys-color-on-surface: #E1E1E1;
    --md-sys-color-on-surface-variant: #A0A0A0;

    --md-sys-color-outline: rgba(255, 255, 255, 0.12);
    --md-sys-color-outline-variant: rgba(255, 255, 255, 0.06);

    /* Glassmorphism */
    --glass-background: rgba(30, 30, 30, 0.7);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-blur: 24px;
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);

    /* Border Radius - 24px as per requirement */
    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-full: 9999px;

    /* Typography */
    --font-display: 'Google Sans', 'Outfit', 'Inter', sans-serif;
    --font-body: 'Roboto', 'Inter', sans-serif;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-medium: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Sidebar - Theme based responsive widths */
    --sidebar-width: 280px;
    --sidebar-collapsed-width: 72px;
    --sidebar-mobile-width: 80px; /* Icon-only on mobile like themes */
    --sidebar-tablet-width: 240px;

    /* Header */
    --header-height: 64px;

    /* Z-index layers */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-drawer: 300;
    --z-modal: 400;
    --z-toast: 500;
}

/* ---------- Light Theme Override ---------- */
body.light-mode {
    --md-sys-color-background: #F5F5F5;
    --md-sys-color-surface: #FFFFFF;
    --md-sys-color-surface-variant: #F0F0F0;
    --md-sys-color-surface-container: rgba(0, 0, 0, 0.04);
    --md-sys-color-surface-container-high: rgba(0, 0, 0, 0.08);
    --md-sys-color-surface-container-highest: rgba(0, 0, 0, 0.12);

    --md-sys-color-on-background: #1A1A1A;
    --md-sys-color-on-surface: #1A1A1A;
    --md-sys-color-on-surface-variant: #5A5A5A;

    --md-sys-color-outline: rgba(0, 0, 0, 0.12);
    --md-sys-color-outline-variant: rgba(0, 0, 0, 0.06);

    /* Light Mode Glassmorphism */
    --glass-background: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(0, 0, 0, 0.08);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);

    /* Adjust primary containers for light mode */
    --md-sys-color-primary-container: rgba(46, 204, 113, 0.12);
    --md-sys-color-secondary-container: rgba(52, 152, 219, 0.12);
    --md-sys-color-tertiary-container: rgba(243, 156, 18, 0.12);
    --md-sys-color-error-container: rgba(231, 76, 60, 0.12);
}

/* Light mode background pattern adjustment */
body.light-mode::before {
    background:
        radial-gradient(circle at 20% 20%, rgba(46, 204, 113, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(52, 152, 219, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 40% 60%, rgba(243, 156, 18, 0.05) 0%, transparent 40%);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    background: var(--md-sys-color-background);
    color: var(--md-sys-color-on-background);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.5;
}

body.dark-mode {
    background: var(--md-sys-color-background);
}

/* Background Pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 20%, rgba(46, 204, 113, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(52, 152, 219, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 60%, rgba(243, 156, 18, 0.03) 0%, transparent 40%);
    pointer-events: none;
    z-index: -1;
}

/* ---------- Typography ---------- */
.font-google-sans {
    font-family: var(--font-display);
}

.font-roboto {
    font-family: var(--font-body);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--md-sys-color-on-surface);
    line-height: 1.3;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 1.75rem;
}

h3 {
    font-size: 1.25rem;
}

h4 {
    font-size: 1.125rem;
}

h5 {
    font-size: 1rem;
}

h6 {
    font-size: 0.875rem;
}

p {
    color: var(--md-sys-color-on-surface-variant);
}

a {
    color: var(--md-sys-color-primary);
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

a:hover {
    opacity: 0.8;
}

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

/* ---------- Glass Panel (Glassmorphism) ---------- */
.glass-panel {
    background: var(--glass-background);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
}

.glass-card {
    background: var(--md-sys-color-surface-container);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: all var(--transition-medium);
}

.glass-card:hover {
    background: var(--md-sys-color-surface-container-high);
    border-color: rgba(255, 255, 255, 0.12);
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

/* ---------- Sidebar ---------- */
.sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    display: flex;
    flex-direction: column;
    padding: var(--space-md);
    z-index: var(--z-sticky);
    transition: all var(--transition-medium);
    background: var(--md-sys-color-surface);
    border-right: 1px solid var(--glass-border);
    overflow: visible;
    /* allow toggle button to be visible */
    overflow-x: hidden;
}

/* Main content margin aligns with sidebar */
.main-content {
    margin-left: var(--sidebar-width);
    transition: margin-left var(--transition-medium);
}

body.sidebar-collapsed .main-content {
    margin-left: var(--sidebar-collapsed-width);
}


/* Light mode sidebar enhancement */
body.light-mode .sidebar {
    background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
    box-shadow: 2px 0 20px rgba(0, 0, 0, 0.05);
}

/* Dark mode sidebar enhancement */
body.dark-mode .sidebar {
    background: linear-gradient(180deg, #1A1A1A 0%, #121212 100%);
    box-shadow: 2px 0 20px rgba(0, 0, 0, 0.3);
}

/* Sidebar Collapsed State */
.sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
    padding: var(--space-md) var(--space-xs);
}

.sidebar.collapsed .logo-text,
.sidebar.collapsed .user-info,
.sidebar.collapsed .user-menu-btn,
.sidebar.collapsed .user-dropdown,
.sidebar.collapsed .nav-text,
.sidebar.collapsed .tree-header span,
.sidebar.collapsed .tree-children,
.sidebar.collapsed .sidebar-footer,
.sidebar.collapsed .system-status-text,
.sidebar.collapsed .sidebar-section-title {
    display: none !important;
}

.sidebar.collapsed .logo-container {
    justify-content: center;
    margin-bottom: var(--space-md);
    width: 100%;
}

.sidebar.collapsed .logo-icon,
.sidebar.collapsed a.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--md-sys-color-primary), #27AE60);
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 12px rgba(46, 204, 113, 0.3);
    padding: 0;
    overflow: hidden;
}

.sidebar.collapsed .logo-icon img.logo-image {
    display: none;
}

.sidebar.collapsed .logo-icon .logo-icon-symbol {
    display: block;
    width: 24px;
    height: 24px;
    color: #000;
}

body.sidebar-collapsed .logo-icon,
body.sidebar-collapsed a.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--md-sys-color-primary), #27AE60);
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 12px rgba(46, 204, 113, 0.3);
    padding: 0;
    overflow: hidden;
}

body.sidebar-collapsed .logo-icon img.logo-image {
    display: none;
}

body.sidebar-collapsed .logo-icon .logo-icon-symbol {
    display: block;
    width: 24px;
    height: 24px;
    color: #000;
}

.sidebar.collapsed .logo-icon img.logo-image {
    display: none;
}


.sidebar.collapsed .user-profile {
    padding: var(--space-xs);
    margin-bottom: var(--space-md);
}

.sidebar.collapsed .user-profile>div {
    justify-content: center;
}

.sidebar.collapsed .user-avatar {
    width: 36px !important;
    height: 36px !important;
    font-size: 0.875rem !important;
}

.sidebar.collapsed .sidebar-nav a,
.sidebar.collapsed .tree-header {
    justify-content: center;
    padding: var(--space-sm);
}

.sidebar.collapsed .tree-header i[data-lucide="chevron-right"] {
    display: none;
}

.sidebar.collapsed .system-status {
    padding: var(--space-xs);
    flex-direction: column;
    gap: var(--space-xs);
}

.sidebar.collapsed .system-status .status-dot {
    margin: 0 auto;
}

/* Toggle Button for Sidebar */
.sidebar-toggle {
    position: absolute;
    top: 50%;
    right: -14px;
    transform: translateY(-50%);
    width: 28px;
    height: 28px;
    background: var(--md-sys-color-primary);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: calc(var(--z-sticky) + 1);
    transition: all var(--transition-fast);
    color: var(--md-sys-color-on-primary);
    box-shadow: 0 2px 8px rgba(46, 204, 113, 0.4);
}

.sidebar-toggle:hover {
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 4px 12px rgba(46, 204, 113, 0.5);
}

.sidebar-toggle i {
    width: 14px;
    height: 14px;
    transition: transform var(--transition-medium);
}

.sidebar.collapsed .sidebar-toggle i {
    transform: rotate(180deg);
}

/* Mobile Hamburger */
.mobile-menu-btn {
    display: none;
    position: fixed;
    top: var(--space-md);
    left: var(--space-md);
    width: 44px;
    height: 44px;
    background: var(--md-sys-color-surface);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: calc(var(--z-drawer) + 1);
    color: var(--md-sys-color-on-surface);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all var(--transition-fast);
}

.mobile-menu-btn:hover {
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    transform: scale(1.05);
}

.mobile-menu-btn:active {
    transform: scale(0.95);
}

/* Mobile Sidebar Overlay */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: calc(var(--z-sticky) - 1);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-medium), visibility var(--transition-medium);
}

.sidebar-overlay.visible {
    opacity: 1;
    visibility: visible;
}

@media (max-width: 991px) {
    .sidebar-overlay {
        display: block;
    }
}

/* Sidebar Scrollbar */
.sidebar::-webkit-scrollbar {
    width: 4px;
}

.sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
    background: var(--md-sys-color-outline);
    border-radius: var(--radius-full);
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--md-sys-color-primary);
}

/* Logo Container */
.logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xs) 0;
    margin-bottom: var(--space-lg);
}

.logo-container .logo-icon,
.logo-container a.logo-icon {
    width: 180px;
    height: auto;
    min-height: 60px;
    background: transparent;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    padding: 8px 12px;
    overflow: hidden;
    transition: all var(--transition-medium);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

.logo-container .logo-icon:hover,
.logo-container a.logo-icon:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

.logo-container a.logo-icon {
    text-decoration: none;
    color: inherit;
}

.logo-container .logo-icon img.logo-image {
    width: 100%;
    height: auto;
    max-height: 80px;
    object-fit: contain;
    display: block;
    pointer-events: none;
}

.logo-container .logo-icon .logo-icon-symbol {
    display: none;
    width: 32px;
    height: 32px;
    color: var(--md-sys-color-primary);
}

.logo-container .logo-icon i,
.logo-container .logo-icon svg {
    width: 22px;
    height: 22px;
    color: #000;
}

.logo-container .logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--md-sys-color-on-surface);
    letter-spacing: -0.5px;
}

.logo-icon {
    width: 180px;
    height: auto;
    min-height: 60px;
    background: transparent;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    padding: 8px 12px;
    overflow: hidden;
    transition: all var(--transition-medium);
    cursor: pointer;
}

.logo-icon:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

.logo-icon img {
    width: 100%;
    height: auto;
    max-height: 80px;
    object-fit: contain;
    display: block;
    pointer-events: none;
}

.logo-icon i,
.logo-icon svg {
    width: 22px;
    height: 22px;
    color: #000;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--md-sys-color-on-surface);
    letter-spacing: -0.5px;
}

.logo-text span {
    color: var(--md-sys-color-primary);
}

/* Sidebar Section Title */
.sidebar-section-title {
    font-size: 0.625rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--md-sys-color-on-surface-variant);
    opacity: 0.6;
    padding: var(--space-sm) var(--space-sm);
    margin-top: var(--space-sm);
}

/* ---------- Tree View ---------- */
.tree-view {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.tree-item {
    display: flex;
    flex-direction: column;
}

.tree-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--md-sys-color-on-surface-variant);
}

.tree-header:hover {
    background: var(--md-sys-color-surface-container-high);
    color: var(--md-sys-color-on-surface);
}

.tree-header.active {
    background: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
}

.tree-header i,
.tree-header svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    transition: transform var(--transition-fast);
}

.tree-header i[data-lucide="chevron-right"] {
    width: 16px;
    height: 16px;
}

.tree-item.expanded>.tree-header i[data-lucide="chevron-right"] {
    transform: rotate(90deg);
}

.tree-children {
    display: none;
    flex-direction: column;
    padding-left: var(--space-xl);
    gap: var(--space-xs);
    margin-top: var(--space-xs);
    animation: slideDown var(--transition-medium) ease-out;
}

.tree-item.expanded>.tree-children {
    display: flex;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tree-children .tree-header {
    font-size: 0.8125rem;
    padding: var(--space-sm) var(--space-md);
}

/* Sidebar Footer */
.sidebar-footer {
    margin-top: auto;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--md-sys-color-outline);
}

/* Language Switcher */
.lang-switcher {
    display: flex;
    gap: var(--space-xs);
    background: var(--md-sys-color-surface-container);
    padding: var(--space-xs);
    border-radius: var(--radius-md);
}

.lang-btn {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    border: none;
    background: transparent;
    color: var(--md-sys-color-on-surface-variant);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-btn:hover {
    background: var(--md-sys-color-surface-container-high);
    color: var(--md-sys-color-on-surface);
}

.lang-btn.active {
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
}

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

/* Extra spacing after header for better visual separation */
.main-content > header.top-bar {
    margin-bottom: var(--space-2xl);
}

/* ---------- Top Bar ---------- */
.top-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg) var(--space-xl);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    margin: calc(var(--space-lg) * -1) calc(var(--space-lg) * -1) var(--space-2xl) calc(var(--space-lg) * -1);
    border-radius: 0;
    border-top: none;
    border-left: none;
    border-right: none;
    margin-bottom: var(--space-2xl);
    background: var(--glass-background);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
}

.header-info h2 {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
    line-height: 1.3;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.header-actions button {
    background: var(--md-sys-color-surface-container);
    border: 1px solid var(--glass-border);
    color: var(--md-sys-color-on-surface);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.header-actions button:hover {
    background: var(--md-sys-color-surface-container-high);
}

/* ---------- Dashboard Grid (KPI Cards) - Theme Based Responsive ---------- */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: var(--space-md);
}

/* Small tablets and up (640px+) */
@media (min-width: 640px) {
    .dashboard-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-lg);
    }
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* KPI Cards */
.kpi-card {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    position: relative;
    overflow: hidden;
}

.kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--md-sys-color-primary), var(--md-sys-color-secondary));
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.kpi-title {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--md-sys-color-on-surface-variant);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.kpi-value {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--md-sys-color-on-surface);
    line-height: 1.2;
}

.kpi-trend {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.8125rem;
    font-weight: 600;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    width: fit-content;
}

.kpi-trend i,
.kpi-trend svg {
    width: 16px;
    height: 16px;
}

.kpi-trend.trend-up {
    background: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
}

.kpi-trend.trend-down {
    background: var(--md-sys-color-error-container);
    color: var(--md-sys-color-on-error-container);
}

.kpi-trend.trend-neutral {
    background: var(--md-sys-color-surface-container-high);
    color: var(--md-sys-color-on-surface-variant);
}

/* ---------- Charts Container - Theme Based Responsive ---------- */
.charts-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
    .charts-container {
        grid-template-columns: 2fr 1fr;
        gap: var(--space-lg);
    }
}

.chart-panel {
    position: relative;
    min-height: 400px;
}

.chart-panel h3 {
    margin-bottom: var(--space-lg);
}

.chart-panel canvas {
    max-height: 300px;
}

/* Sandbox Controls */
.sandbox-controls {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.sandbox-slider {
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    background: var(--md-sys-color-surface-container-high);
    border-radius: var(--radius-full);
    outline: none;
    cursor: pointer;
}

.sandbox-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--md-sys-color-primary);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid var(--md-sys-color-background);
    box-shadow: 0 2px 8px rgba(46, 204, 113, 0.4);
    transition: transform var(--transition-fast);
}

.sandbox-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.sandbox-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--md-sys-color-primary);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid var(--md-sys-color-background);
    box-shadow: 0 2px 8px rgba(46, 204, 113, 0.4);
}

/* ---------- Heatmap ---------- */
.heatmap-panel {
    min-height: 400px;
}

.heatmap-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.heatmap-row {
    display: flex;
    gap: 2px;
    align-items: center;
}

.heatmap-label {
    width: 40px;
    font-size: 0.6875rem;
    color: var(--md-sys-color-on-surface-variant);
    text-align: right;
    padding-right: var(--space-sm);
}

.heatmap-cells {
    display: flex;
    gap: 2px;
    flex: 1;
}

.heatmap-cell {
    flex: 1;
    aspect-ratio: 1;
    border-radius: 4px;
    transition: all var(--transition-fast);
    cursor: pointer;
    position: relative;
}

.heatmap-cell:hover {
    transform: scale(1.3);
    z-index: 10;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.heatmap-cell.low {
    background: #27AE60;
}

.heatmap-cell.medium {
    background: #F39C12;
}

.heatmap-cell.high {
    background: #E74C3C;
}

.heatmap-cell::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--md-sys-color-surface);
    color: var(--md-sys-color-on-surface);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.6875rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: 100;
}

.heatmap-cell:hover::after {
    opacity: 1;
    visibility: visible;
}

.heatmap-hours {
    display: flex;
    justify-content: space-between;
    padding-left: 48px;
    margin-top: var(--space-sm);
}

.heatmap-hours span {
    font-size: 0.625rem;
    color: var(--md-sys-color-on-surface-variant);
}

/* ---------- AI Insight Banner ---------- */
#aiInsight {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    border-left: 4px solid var(--md-sys-color-primary);
    animation: pulseGlow 3s infinite;
}

@keyframes pulseGlow {

    0%,
    100% {
        box-shadow: 0 0 20px rgba(46, 204, 113, 0.1);
    }

    50% {
        box-shadow: 0 0 30px rgba(46, 204, 113, 0.2);
    }
}

#aiInsight .icon-container {
    background: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    padding: var(--space-md);
    border-radius: var(--radius-md);
}

#aiInsight .icon-container i,
#aiInsight .icon-container svg {
    width: 24px;
    height: 24px;
}

#aiInsight h4 {
    font-size: 1rem;
    margin-bottom: var(--space-xs);
    color: var(--md-sys-color-primary);
}

#aiInsight p {
    font-size: 0.875rem;
    color: var(--md-sys-color-on-surface-variant);
}

#aiInsight button {
    margin-left: auto;
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    border: none;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

#aiInsight button:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 16px rgba(46, 204, 113, 0.4);
}

/* ---------- Side Drawer ---------- */
.side-drawer {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    height: 100vh;
    background: var(--glass-background);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-left: 1px solid var(--glass-border);
    z-index: var(--z-drawer);
    transition: right var(--transition-medium);
    display: flex;
    flex-direction: column;
    box-shadow: -8px 0 32px rgba(0, 0, 0, 0.4);
}

.side-drawer.open {
    right: 0;
}

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

.drawer-header h2 {
    font-size: 1.25rem;
}

.drawer-header button {
    background: transparent;
    border: none;
    color: var(--md-sys-color-on-surface);
    cursor: pointer;
    padding: var(--space-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.drawer-header button:hover {
    background: var(--md-sys-color-surface-container-high);
}

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

.drawer-content .glass-card {
    margin-bottom: var(--space-lg);
}

/* Drawer overlay */
.drawer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: calc(var(--z-drawer) - 1);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-medium);
}

.drawer-overlay.visible {
    opacity: 1;
    visibility: visible;
}

/* ---------- Toast Notifications ---------- */
.toast-container {
    position: fixed;
    top: var(--space-lg);
    right: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    z-index: var(--z-toast);
    max-width: 400px;
}

.toast {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--glass-background);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    animation: slideInRight var(--transition-medium) ease-out;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }

    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

.toast.closing {
    animation: slideOutRight var(--transition-medium) ease-in forwards;
}

.toast-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.toast-icon i,
.toast-icon svg {
    width: 20px;
    height: 20px;
}

.toast.warning .toast-icon {
    background: var(--md-sys-color-tertiary-container);
    color: var(--md-sys-color-on-tertiary-container);
}

.toast.error .toast-icon {
    background: var(--md-sys-color-error-container);
    color: var(--md-sys-color-on-error-container);
}

.toast.success .toast-icon {
    background: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
}

.toast.info .toast-icon {
    background: var(--md-sys-color-secondary-container);
    color: var(--md-sys-color-on-secondary-container);
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--md-sys-color-on-surface);
    margin-bottom: var(--space-xs);
}

.toast-message {
    font-size: 0.8125rem;
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.4;
}

.toast-close {
    background: transparent;
    border: none;
    color: var(--md-sys-color-on-surface-variant);
    cursor: pointer;
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.toast-close:hover {
    background: var(--md-sys-color-surface-container-high);
    color: var(--md-sys-color-on-surface);
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-lg);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary {
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
}

.btn-primary:hover {
    box-shadow: 0 4px 16px rgba(46, 204, 113, 0.4);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--md-sys-color-surface-container-high);
    color: var(--md-sys-color-on-surface);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: var(--md-sys-color-surface-container-highest);
}

.btn-outline {
    background: transparent;
    color: var(--md-sys-color-primary);
    border: 1px solid var(--md-sys-color-primary);
}

.btn-outline:hover {
    background: var(--md-sys-color-primary-container);
}

.btn i,
.btn svg {
    width: 18px;
    height: 18px;
}

/* ---------- Form Elements ---------- */
input,
select,
textarea {
    font-family: var(--font-body);
    font-size: 0.875rem;
    background: var(--md-sys-color-surface-container);
    color: var(--md-sys-color-on-surface);
    border: 1px solid var(--md-sys-color-outline);
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
    outline: none;
    transition: all var(--transition-fast);
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--md-sys-color-primary);
    box-shadow: 0 0 0 3px var(--md-sys-color-primary-container);
}

input::placeholder {
    color: var(--md-sys-color-on-surface-variant);
    opacity: 0.7;
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    width: 48px;
    height: 28px;
}

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

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--md-sys-color-surface-container-high);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    height: 20px;
    width: 20px;
    left: 4px;
    bottom: 4px;
    background: var(--md-sys-color-on-surface);
    border-radius: 50%;
    transition: all var(--transition-fast);
}

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

.toggle-switch input:checked+.toggle-slider::before {
    transform: translateX(20px);
    background: var(--md-sys-color-on-primary);
}

/* ---------- Tables ---------- */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--md-sys-color-outline);
}

.data-table th {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--md-sys-color-on-surface-variant);
    background: var(--md-sys-color-surface-container);
}

.data-table td {
    font-size: 0.875rem;
    color: var(--md-sys-color-on-surface);
}

.data-table tr:hover td {
    background: var(--md-sys-color-surface-container-high);
}

/* Status Badge */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-full);
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-badge.critical {
    background: var(--md-sys-color-error-container);
    color: var(--md-sys-color-on-error-container);
}

.status-badge.warning {
    background: var(--md-sys-color-tertiary-container);
    color: var(--md-sys-color-on-tertiary-container);
}

.status-badge.optimal {
    background: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
}

.status-badge.neutral {
    background: var(--md-sys-color-surface-container-high);
    color: var(--md-sys-color-on-surface-variant);
}

/* ---------- Progress Bars ---------- */
.progress-bar {
    height: 8px;
    background: var(--md-sys-color-surface-container-high);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

.progress-bar-fill.primary {
    background: linear-gradient(90deg, var(--md-sys-color-primary), #58D68D);
}

.progress-bar-fill.warning {
    background: linear-gradient(90deg, var(--md-sys-color-warning), #F7DC6F);
}

.progress-bar-fill.error {
    background: linear-gradient(90deg, var(--md-sys-color-error), #EC7063);
}

/* ---------- Gauge Chart ---------- */
.gauge-container {
    position: relative;
    width: 180px;
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.gauge-container svg {
    transform: rotate(-90deg);
}

.gauge-container .gauge-bg {
    fill: none;
    stroke: var(--md-sys-color-surface-container-high);
    stroke-width: 12;
}

.gauge-container .gauge-fill {
    fill: none;
    stroke: var(--md-sys-color-primary);
    stroke-width: 12;
    stroke-linecap: round;
    transition: stroke-dashoffset var(--transition-slow);
}

.gauge-value {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.gauge-value .value {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--md-sys-color-on-surface);
}

.gauge-value .label {
    font-size: 0.75rem;
    color: var(--md-sys-color-on-surface-variant);
}

/* ---------- Tabs ---------- */
.tabs {
    display: flex;
    gap: var(--space-sm);
    background: var(--md-sys-color-surface-container);
    padding: var(--space-xs);
    border-radius: var(--radius-lg);
}

.tab {
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--md-sys-color-on-surface-variant);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tab:hover {
    background: var(--md-sys-color-surface-container-high);
    color: var(--md-sys-color-on-surface);
}

.tab.active {
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
}

/* ---------- Chip/Tag ---------- */
.chip {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--md-sys-color-surface-container-high);
    color: var(--md-sys-color-on-surface);
    border: 1px solid var(--md-sys-color-outline);
}

.chip.active {
    background: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    border-color: var(--md-sys-color-primary);
}

/* ---------- Loading States ---------- */
.skeleton {
    background: linear-gradient(90deg,
            var(--md-sys-color-surface-container) 25%,
            var(--md-sys-color-surface-container-high) 50%,
            var(--md-sys-color-surface-container) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

@keyframes shimmer {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

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

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

/* ---------- Responsive - Theme Based Breakpoints ---------- */
/* Desktop (1024px+) - Full sidebar */
@media (min-width: 1024px) {
    .sidebar {
        width: var(--sidebar-width);
    }

    .main-content {
        margin-left: var(--sidebar-width);
    }
}

/* Tablet (768px - 1023px) - Collapsed sidebar option */
@media (min-width: 768px) and (max-width: 1023px) {
    .sidebar {
        width: var(--sidebar-tablet-width);
    }

    .main-content {
        margin-left: var(--sidebar-tablet-width);
    }

    /* Optionally hide some text on tablet */
    .tree-header span {
        font-size: 0.75rem;
    }
}

/* ---------- Page Specific: Market Intelligence - Theme Based Responsive ---------- */
.market-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
    .market-grid {
        display: grid;
        grid-template-columns: 2fr 1fr;
        gap: var(--space-lg);
    }
}

.market-table {
    width: 100%;
    font-size: 0.875rem;
}

.market-table th,
.market-table td {
    padding: var(--space-sm) var(--space-md);
}

/* Desktop */
@media (min-width: 1024px) {
    .market-table th,
    .market-table td {
        padding: var(--space-md) var(--space-lg);
    }
}

.market-table tr.high-cost {
    background: rgba(231, 76, 60, 0.1);
}

.market-table tr.low-cost {
    background: rgba(46, 204, 113, 0.1);
}

.price-cell.high {
    color: var(--md-sys-color-error);
    font-weight: 700;
}

.price-cell.low {
    color: var(--md-sys-color-primary);
    font-weight: 700;
}

.change-cell.positive {
    color: var(--md-sys-color-error);
}

.change-cell.negative {
    color: var(--md-sys-color-primary);
}

/* ---------- Page Specific: Operations - Theme Based Responsive ---------- */
.operations-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
    .operations-grid {
        display: grid;
        grid-template-columns: 2fr 1fr;
        gap: var(--space-lg);
    }
}

.machines-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
}

/* Tablet (768px+) */
@media (min-width: 768px) {
    .machines-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Large Desktop (1280px+) */
@media (min-width: 1280px) {
    .machines-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.machine-card {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.machine-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.machine-status {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    box-shadow: 0 0 8px currentColor;
}

.machine-status.online {
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-primary);
}

.machine-status.warning {
    background: var(--md-sys-color-warning);
    color: var(--md-sys-color-warning);
}

.machine-status.offline {
    background: var(--md-sys-color-error);
    color: var(--md-sys-color-error);
}

/* ---------- Weather Widget ---------- */
.weather-widget {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    background: var(--md-sys-color-surface-container);
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
}

.weather-icon {
    color: var(--md-sys-color-tertiary);
}

.weather-info {
    display: flex;
    flex-direction: column;
}

.weather-temp {
    font-weight: 700;
    font-size: 0.875rem;
}

.weather-desc {
    font-size: 0.6875rem;
    color: var(--md-sys-color-on-surface-variant);
}

/* ---------- Alert Banner ---------- */
.alert-banner-container {
    position: relative;
    z-index: 201;
    margin-bottom: var(--space-lg);
    margin-top: calc(var(--space-lg) * -1);
}

.alert-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    animation: slideDown var(--transition-medium) ease-out;
    position: relative;
    z-index: 201;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.alert-banner.warning {
    background: var(--md-sys-color-tertiary);
    color: #000;
}

.alert-banner.error {
    background: var(--md-sys-color-error);
    color: #fff;
}

.alert-banner.success {
    background: var(--md-sys-color-primary);
    color: #000;
}

.alert-banner-content {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.alert-banner-icon {
    padding: var(--space-sm);
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-md);
}

.alert-banner-actions {
    display: flex;
    gap: var(--space-sm);
}

.alert-banner-actions .btn {
    background: #000;
    color: #fff;
}

.alert-banner-actions .btn-close {
    background: rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(0, 0, 0, 0.2);
}

/* ---------- Savings Display ---------- */
.savings-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl);
    background: linear-gradient(135deg,
            var(--md-sys-color-primary-container),
            rgba(46, 204, 113, 0.05));
    border-radius: var(--radius-xl);
    border: 1px solid var(--md-sys-color-primary);
    text-align: center;
}

.savings-value {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    color: var(--md-sys-color-primary);
    line-height: 1;
    margin-bottom: var(--space-sm);
}

.savings-label {
    font-size: 0.875rem;
    color: var(--md-sys-color-on-surface-variant);
}

/* ---------- Custom Scrollbar ---------- */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--md-sys-color-outline);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--md-sys-color-on-surface-variant);
}

/* ---------- Utility Classes ---------- */
.text-primary {
    color: var(--md-sys-color-primary);
}

.text-secondary {
    color: var(--md-sys-color-secondary);
}

.text-tertiary {
    color: var(--md-sys-color-tertiary);
}

.text-error {
    color: var(--md-sys-color-error);
}

.text-success {
    color: var(--md-sys-color-success);
}

.text-muted {
    color: var(--md-sys-color-on-surface-variant);
}

.bg-primary {
    background: var(--md-sys-color-primary);
}

.bg-surface {
    background: var(--md-sys-color-surface);
}

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-sm {
    gap: var(--space-sm);
}

.gap-md {
    gap: var(--space-md);
}

.gap-lg {
    gap: var(--space-lg);
}

.mt-auto {
    margin-top: auto;
}

.ml-auto {
    margin-left: auto;
}

.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

/* ---------- Spinner (Loading Indicator) ---------- */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--md-sys-color-surface-container-high);
    border-top-color: var(--md-sys-color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto;
}

.spinner.small {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

.spinner.large {
    width: 60px;
    height: 60px;
    border-width: 4px;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

/* ---------- Loading States ---------- */
.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.6;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 24px;
    height: 24px;
    margin-top: -12px;
    margin-left: -12px;
    border: 2px solid var(--md-sys-color-surface-container-high);
    border-top-color: var(--md-sys-color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ---------- Savings Display ---------- */
.savings-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.savings-value {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--md-sys-color-primary);
}

.savings-label {
    font-size: 0.875rem;
    color: var(--md-sys-color-on-surface-variant);
}

/* ---------- Page Transitions ---------- */
.page-transition-enabled .main-content {
    animation: pageEnter var(--transition-medium) ease-out;
}

@keyframes pageEnter {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.page-exit {
    animation: pageExit var(--transition-fast) ease-in forwards;
}

@keyframes pageExit {
    from {
        opacity: 1;
        transform: translateY(0);
    }

    to {
        opacity: 0;
        transform: translateY(-10px);
    }
}

/* ---------- Main Content Sidebar Adjustment ---------- */
.main-content {
    transition: margin-left var(--transition-medium);
}

body.sidebar-collapsed .main-content {
    margin-left: var(--sidebar-collapsed-width);
}

/* ---------- Responsive Styles ---------- */

/* Large Desktop (1400px+) */
@media (min-width: 1400px) {
    .dashboard-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .charts-container {
        grid-template-columns: 2fr 1fr;
    }
}

/* Desktop (1024px+) - Theme Based Breakpoint */
@media (min-width: 1024px) {
    .charts-row {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--space-lg);
    }

    .profile-container {
        display: grid;
        grid-template-columns: 1fr 2fr;
        gap: var(--space-xl);
    }

    .settings-container {
        display: grid;
        grid-template-columns: 250px 1fr;
        gap: var(--space-xl);
    }
}

/* Large Desktop (1280px+) - Theme Based */
@media (min-width: 1280px) {
    .main-content {
        padding: var(--space-xl);
    }
}

/* Tablet Portrait (768px - 1023px) - Theme Based */
@media (min-width: 768px) and (max-width: 1023px) {
    :root {
        --sidebar-width: 240px;
    }

    .sidebar {
        width: var(--sidebar-width);
    }

    .main-content {
        margin-left: var(--sidebar-width);
    }

    /* Tree view responsive */
    .tree-view {
        max-height: calc(100vh - 300px);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
}

/* Mobile (up to 767px) - Theme Based */
@media (max-width: 767px) {
    :root {
        --sidebar-width: 280px;
    }

    .sidebar {
        transform: translateX(-100%);
        width: 280px;
        transition: transform 0.3s ease;
        box-shadow: none;
        z-index: 300;
    }

    .sidebar.open {
        transform: translateX(0);
        box-shadow: 4px 0 20px rgba(0, 0, 0, 0.3);
    }

    .main-content {
        margin-left: 0 !important;
        padding: var(--space-md);
        padding-top: calc(var(--space-md) + 60px);
    }

    body.sidebar-collapsed .main-content {
        margin-left: 0 !important;
    }

    body.sidebar-collapsed .sidebar {
        width: 280px;
    }

    /* Tree view responsive */
    .tree-view {
        max-height: calc(100vh - 300px);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .tree-children {
        padding-left: var(--space-md);
    }

    .sidebar-footer {
        padding-top: var(--space-md);
    }

    /* Hide sidebar toggle on mobile */
    .sidebar-toggle-btn {
        display: none;
    }

    /* Show mobile menu button */
    .mobile-menu-btn {
        display: flex;
    }
}

/* Small Mobile (up to 480px) - Theme Based */
@media (max-width: 480px) {
    .sidebar {
        max-width: 100%;
        width: 100%;
    }

    .tree-view {
        max-height: calc(100vh - 200px);
    }

    .user-profile-compact {
        flex-direction: column;
        text-align: center;
        gap: var(--space-xs);
        padding: var(--space-sm);
    }

    .user-info {
        width: 100%;
    }

    .sidebar-nav a {
        padding: var(--space-sm);
        font-size: 0.875rem;
    }

    .tree-header {
        padding: var(--space-sm);
        font-size: 0.8125rem;
    }

    .logo-container {
        margin-bottom: var(--space-md);
    }
}

    .mobile-menu-btn {
        display: flex;
    }

    .sidebar-overlay {
        display: block;
    }

    .sidebar-toggle {
        display: none;
    }

    .top-bar {
        margin: calc(var(--space-md) * -1);
        margin-top: calc(var(--space-md) * -1 - 60px);
        margin-bottom: var(--space-xl);
        padding: var(--space-md) var(--space-lg);
        padding-left: 60px;
    }

    .dashboard-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
    }

    .reports-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .header-actions {
        gap: var(--space-sm);
    }

    .weather-widget {
        display: none;
    }
}

/* Mobile Landscape / Large Phone (576px - 767px) - Theme Based */
@media (min-width: 576px) and (max-width: 767px) {
    .dashboard-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-sm);
    }

    .kpi-card {
        padding: var(--space-md);
    }

    .kpi-value {
        font-size: 1.5rem;
    }

    .kpi-title {
        font-size: 0.6875rem;
    }

    .glass-panel {
        padding: var(--space-md);
    }

    .chart-panel {
        min-height: 300px;
    }

    h2 {
        font-size: 1.25rem;
    }

    h3 {
        font-size: 1rem;
    }

    .tabs {
        flex-wrap: wrap;
    }

    .tab {
        padding: var(--space-xs) var(--space-sm);
        font-size: 0.6875rem;
    }

    .side-drawer {
        width: 100%;
        right: -100%;
    }

    #aiInsight {
        flex-direction: column;
        text-align: center;
    }

    #aiInsight button {
        margin-left: 0;
        width: 100%;
    }
}

/* Mobile Portrait (up to 575px) - Theme Based */
@media (max-width: 575px) {
    :root {
        --space-lg: 16px;
        --space-xl: 24px;
    }

    .main-content {
        padding: var(--space-sm);
        padding-top: calc(var(--space-sm) + 60px);
    }

    .top-bar {
        margin: calc(var(--space-sm) * -1);
        margin-top: calc(var(--space-sm) * -1 - 60px);
        margin-bottom: var(--space-lg);
        padding: var(--space-md) var(--space-md);
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
        padding-left: 56px;
    }

    .header-actions {
        width: 100%;
        justify-content: flex-end;
        flex-wrap: wrap;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }

    .date-range-picker {
        width: 100%;
        flex-wrap: wrap;
    }

    .date-input {
        flex: 1;
        min-width: 100px;
    }

    .btn {
        padding: var(--space-xs) var(--space-md);
        font-size: 0.75rem;
    }

    .data-table {
        font-size: 0.75rem;
    }

    .data-table th,
    .data-table td {
        padding: var(--space-sm);
    }

    .heatmap-panel {
        min-height: auto;
    }

    .heatmap-cell {
        width: 8px;
        height: 8px;
    }

    .profile-avatar {
        width: 80px;
        height: 80px;
        font-size: 2rem;
    }

    .activity-item {
        flex-wrap: wrap;
    }

    .activity-item>span:last-child {
        width: 100%;
        margin-top: var(--space-xs);
    }

    /* Hide weather widget on very small screens */
    .weather-widget {
        display: none;
    }
}

/* Extra Small Devices (up to 375px) - Theme Based */
@media (max-width: 375px) {
    .kpi-card {
        padding: var(--space-sm);
    }

    .kpi-value {
        font-size: 1.25rem;
    }

    .logo-text {
        font-size: 1.25rem;
    }

    .sandbox-controls {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xs);
    }

    .sandbox-slider {
        width: 100%;
    }

    .top-bar {
        padding-left: 56px;
    }

    .header-info h2 {
        font-size: 1.125rem;
    }
}

/* Reduced Motion Preference */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .page-transition-enabled .main-content {
        animation: none;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --glass-border: rgba(255, 255, 255, 0.3);
    }

    body.light-mode {
        --glass-border: rgba(0, 0, 0, 0.3);
    }
}

/* ---------- Print Styles ---------- */
@media print {

    .sidebar,
    .toast-container,
    .side-drawer,
    .mobile-menu-btn,
    .sidebar-overlay {
        display: none !important;
    }

    .main-content {
        margin-left: 0;
    }

    body {
        background: #fff;
        color: #000;
    }

    .glass-panel,
    .glass-card {
        background: #fff;
        box-shadow: none;
        border: 1px solid #ddd;
    }
}