:root {
    /* Color Palette - Light Mode */
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #10b981;
    --background-color: #f8fafc;
    --surface-color: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    
    /* Border Radius */
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
}

[data-theme="dark"] {
    --primary-color: #3b82f6;
    --primary-hover: #60a5fa;
    --secondary-color: #34d399;
    --background-color: #0f172a;
    --surface-color: #1e293b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: #334155;
    
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--background-color);
    color: var(--text-main);
    transition: background-color var(--transition-normal), color var(--transition-normal);
    min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    color: var(--text-main);
}

/* Glassmorphism Utilities */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

/* Auth Layout */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--background-color) 0%, var(--surface-color) 100%);
    position: relative;
    overflow: hidden;
}

/* Decorative background elements for Auth */
.auth-wrapper::before,
.auth-wrapper::after {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(100px);
    z-index: 0;
    opacity: 0.5;
}

.auth-wrapper::before {
    background: var(--primary-color);
    top: -200px;
    left: -200px;
    animation: float 10s ease-in-out infinite alternate;
}

.auth-wrapper::after {
    background: var(--secondary-color);
    bottom: -200px;
    right: -200px;
    animation: float 12s ease-in-out infinite alternate-reverse;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(50px, 50px) scale(1.1); }
}

.auth-card {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 420px;
    padding: 2.5rem;
    animation: slideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Form Elements */
.form-control {
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-control:focus {
    background-color: var(--background-color);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
    color: var(--text-main);
}

.form-label {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

/* Buttons */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-fast);
}

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

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

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 100;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    transform: scale(1.1);
}

.swal2-popup {
    background: var(--surface-color) !important;
    color: var(--text-main) !important;
    border-radius: var(--radius-lg) !important;
}

/* Bootstrap Overrides for Dark Mode */
.text-muted {
    color: var(--text-muted) !important;
}

.text-main {
    color: var(--text-main) !important;
}

.dropdown-menu {
    background-color: var(--surface-color);
    border-color: var(--border-color);
}

.dropdown-item {
    color: var(--text-main);
}

.dropdown-item:hover, .dropdown-item:focus {
    background-color: var(--background-color);
    color: var(--primary-color);
}

.dropdown-header {
    color: var(--text-muted);
}

.dropdown-divider {
    border-top-color: var(--border-color);
}

.list-group-item {
    background-color: transparent;
    color: var(--text-main);
    border-color: var(--border-color);
}

.list-group-item:hover, .list-group-item-action:hover {
    background-color: rgba(0,0,0,0.05);
}

[data-theme="dark"] .list-group-item:hover, 
[data-theme="dark"] .list-group-item-action:hover {
    background-color: rgba(255,255,255,0.05);
}
.swal2-title {
    color: var(--text-main) !important;
}

/* --- Card Overrides --- */
.card {
    background-color: var(--surface-color) !important;
    color: var(--text-main) !important;
    border-color: var(--border-color) !important;
}
.card-header, .card-footer {
    background-color: var(--background-color) !important;
    border-color: var(--border-color) !important;
}

/* --- Typography Overrides for Dark Mode --- */
.text-muted {
    color: var(--text-muted) !important;
}
.text-dark {
    color: var(--text-main) !important;
}

/* --- Print Styles --- */
@media print {
    /* Hide everything except the print area */
    body * {
        visibility: hidden;
    }
    .hide-on-print {
        display: none !important;
    }
    .print-full-width {
        width: 100% !important;
        max-width: none !important;
        margin: 0 !important;
        padding: 0 !important;
    }
    .print-no-border {
        border: none !important;
        box-shadow: none !important;
    }
    /* Specific section visibility */
    #balance-pane, #balance-pane * {
        visibility: visible;
    }
    #balance-pane {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
    }
    /* Adjust charts for printing */
    .print-chart canvas {
        min-height: 250px !important;
    }
}