/* --- CSS Variables and Global Styles --- */
:root {
    /* Spacing System - Based on 8px grid (8px = 0.5rem) */
    --space-0: 0;
    --space-1: 0.25rem;    /* 4px */
    --space-2: 0.5rem;     /* 8px */
    --space-3: 0.75rem;    /* 12px */
    --space-4: 1rem;       /* 16px */
    --space-5: 1.25rem;    /* 20px */
    --space-6: 1.5rem;     /* 24px */
    --space-7: 1.75rem;    /* 28px */
    --space-8: 2rem;       /* 32px */
    --space-10: 2.5rem;    /* 40px */
    --space-12: 3rem;      /* 48px */
    --space-16: 4rem;      /* 64px */
    --space-20: 5rem;      /* 80px */
    --space-24: 6rem;      /* 96px */

    /* Component Spacing */
    --section-spacing: var(--space-10);      /* 40px - between major sections */
    --container-padding: var(--space-5);     /* 20px - container padding */
    --card-padding: var(--space-6);          /* 24px - card/form padding */
    --element-spacing: var(--space-4);       /* 16px - between related elements */
    --tight-spacing: var(--space-2);         /* 8px - tight spacing */
    --form-field-spacing: var(--space-3);    /* 12px - between form fields */
    --button-spacing: var(--space-2);        /* 8px - button padding */
    --table-cell-padding: var(--space-3);    /* 12px - table cell padding */

    /* Layout Grid */
    --grid-gap-sm: var(--space-2);   /* 8px */
    --grid-gap: var(--space-4);      /* 16px */
    --grid-gap-lg: var(--space-5);   /* 20px */
    --grid-gap-xl: var(--space-6);   /* 24px */

    /* Typography System */
    --font-family-sans: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    
    /* Font Sizes - Modular Scale (1.25 ratio) */
    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-lg: 1.125rem;   /* 18px */
    --font-size-xl: 1.25rem;    /* 20px */
    --font-size-2xl: 1.5rem;    /* 24px */
    --font-size-3xl: 1.875rem;  /* 30px */
    --font-size-4xl: 2.25rem;   /* 36px */
    
    /* Font Weights */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Line Heights */
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    --line-height-loose: 2;
    
    /* Letter Spacing */
    --letter-spacing-tight: -0.025em;
    --letter-spacing-normal: 0;
    --letter-spacing-wide: 0.025em;
    --letter-spacing-wider: 0.05em;
    
    /* Modernized Color Palette */
    --color-primary: #007bff; /* A vibrant, modern blue */
    --color-primary-dark: #0056b3;
    --color-primary-light: rgba(0, 123, 255, 0.1);
    --color-secondary: #6c757d; /* A cool, neutral gray */
    --color-secondary-dark: #5a6268;
    --color-success: #28a745; /* A fresh, clear green */
    --color-success-dark: #1e7e34;
    --color-success-text: #155724;
    --color-success-bg: #d4edda;
    --color-success-border: #c3e6cb;
    --color-info-text: #117a8b;
    --color-info-bg: #d1ecf1;
    --color-info-border: #bee5eb;
    --color-danger: #dc3545; /* A strong, clear red */
    --color-danger-dark: #c82333;
    --color-danger-text: #721c24;
    --color-danger-bg: #f8d7da;
    --color-danger-border: #f5c6cb;
    --color-warning: #ffc107; /* A bright, friendly yellow */
    --color-warning-dark: #e0a800;
    --color-text: #343a40; /* Dark gray for readability */
    --color-text-light: #6c757d;
    --color-text-secondary: #6c757d;
    --color-heading: #212529;
    --color-border: #dee2e6; /* Lighter gray for subtle borders */
    --color-border-light: #f1f3f5;
    --color-bg: #f8f9fa; /* A very light gray for the main background */
    --color-bg-light: #ffffff;
    --color-bg-even-row: #f1f3f5;
    --color-bg-form: #ffffff;
    --color-bg-summary: #e9ecef;
    --color-white: #ffffff;
    --border-radius: 0.375rem; /* Slightly larger radius for a softer look */
    --border-radius-sm: 0.25rem;
    --shadow-1: 0 2px 4px rgba(0,0,0,0.075); /* Softer shadow */
    --shadow-2: 0 4px 8px rgba(0,0,0,0.1);
}

.dark-mode {
    --color-primary: #4dabf7; /* A lighter blue for dark mode */
    --color-primary-dark: #1e90ff;
    --color-primary-light: rgba(77, 171, 247, 0.1);
    --color-secondary: #adb5bd; /* Lighter gray for secondary elements */
    --color-secondary-dark: #9fa8b0;
    --color-success: #40c057; /* A vibrant green for dark mode */
    --color-success-dark: #2b8a3e;
    --color-success-text: #d4edda;
    --color-success-bg: #2b4a3e;
    --color-success-border: #3c6e47;
    --color-info-text: #66d9e8;
    --color-info-bg: #2b4a3e;
    --color-info-border: #3c6e47;
    --color-danger: #fa5252; /* A clear red for dark mode */
    --color-danger-dark: #e03131;
    --color-danger-text: #f8d7da;
    --color-danger-bg: #4a2b2b;
    --color-danger-border: #6e3c3c;
    --color-warning: #ffd43b; /* A friendly yellow for dark mode */
    --color-warning-dark: #fcc419;
    --color-text: #e9ecef; /* Light gray for text */
    --color-text-light: #ced4da;
    --color-text-secondary: #adb5bd;
    --color-heading: #f8f9fa; /* White for headings */
    --color-border: #495057; /* Darker border color */
    --color-border-light: #343a40;
    --color-bg: #121212; /* A true dark background */
    --color-bg-light: #1e1e1e; /* Slightly lighter for cards, etc. */
    --color-bg-hover: #2c2c2c;
    --color-bg-even-row: #212529;
    --color-bg-form: #1e1e1e;
    --color-bg-summary: #212529;
    --color-white: #e9ecef;
    --shadow-1: 0 2px 4px rgba(0,0,0,0.25);
    --shadow-2: 0 4px 8px rgba(0,0,0,0.3);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

/* --- Typography Base Styles --- */
body { 
    font-family: var(--font-family-sans); 
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    letter-spacing: var(--letter-spacing-normal);
    color: var(--color-text); 
    background-color: var(--color-bg); 
}

/* --- Icon helpers (Material Symbols) --- */
.material-symbols-outlined {
    font-variation-settings:
      'FILL' 0,
      'wght' 400,
      'GRAD' 0,
      'opsz' 24;
    vertical-align: middle;
    line-height: 1;
}

.icon {
    font-size: 20px;
}

.button-primary .icon,
.button-secondary .icon,
.button-danger .icon,
.edit-button .icon,
.delete-button .icon,
.theme-toggle-btn .icon {
    font-size: 18px;
}

/* Specific spacing for small buttons */
.button-sm .icon {
    font-size: 16px;
}

/* Heading Hierarchy */
h1 {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
    color: var(--color-heading);
    margin: 0 0 var(--space-4) 0;
}

h2 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
    color: var(--color-heading);
    margin: var(--space-6) 0 var(--space-4) 0;
}

h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-normal);
    color: var(--color-heading);
    margin: var(--space-5) 0 var(--space-3) 0;
}

h4 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-normal);
    letter-spacing: var(--letter-spacing-normal);
    color: var(--color-heading);
    margin: var(--space-4) 0 var(--space-2) 0;
}

h5 {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-normal);
    letter-spacing: var(--letter-spacing-normal);
    color: var(--color-heading);
    margin: var(--space-3) 0 var(--space-2) 0;
}

h6 {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-normal);
    letter-spacing: var(--letter-spacing-wide);
    color: var(--color-heading);
    margin: var(--space-2) 0 var(--space-1) 0;
    text-transform: uppercase;
}

/* Paragraph and Text Elements */
p {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-relaxed);
    letter-spacing: var(--letter-spacing-normal);
    color: var(--color-text);
    margin: 0 0 var(--space-4) 0;
}

/* --- Utility Classes for Consistent Spacing --- */
.section-heading {
    margin-top: var(--section-spacing) !important;
}

.section-heading-center {
    margin-top: var(--section-spacing) !important;
    text-align: center;
}

.analytics-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-5);
    gap: var(--grid-gap);
}

.analytics-controls-center {
    display: flex;
    justify-content: center;
    margin-bottom: var(--form-field-spacing);
}

.treemap-controls {
    display: flex;
    justify-content: center;
    margin-bottom: var(--form-field-spacing);
    gap: var(--space-2);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.performance-grid {
    display: flex;
    gap: var(--space-5);
    align-items: flex-start;
}

.ticker-filter-list {
    min-width: 200px;
}

/* --- Utility Classes for Margins --- */
.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: var(--space-1) !important; }
.mt-2 { margin-top: var(--space-2) !important; }
.mt-3 { margin-top: var(--space-3) !important; }
.mt-4 { margin-top: var(--space-4) !important; }
.mt-5 { margin-top: var(--space-5) !important; }
.mt-section { margin-top: var(--section-spacing) !important; }

.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: var(--space-1) !important; }
.mb-2 { margin-bottom: var(--space-2) !important; }
.mb-3 { margin-bottom: var(--space-3) !important; }
.mb-4 { margin-bottom: var(--space-4) !important; }
.mb-5 { margin-bottom: var(--space-5) !important; }
.mb-section { margin-bottom: var(--section-spacing) !important; }

.ml-0 { margin-left: 0 !important; }
.ml-1 { margin-left: var(--space-1) !important; }
.ml-2 { margin-left: var(--space-2) !important; }
.ml-3 { margin-left: var(--space-3) !important; }
.ml-4 { margin-left: var(--space-4) !important; }

.mr-0 { margin-right: 0 !important; }
.mr-1 { margin-right: var(--space-1) !important; }
.mr-2 { margin-right: var(--space-2) !important; }
.mr-3 { margin-right: var(--space-3) !important; }
.mr-4 { margin-right: var(--space-4) !important; }

/* --- Utility Classes for Padding --- */
.p-0 { padding: 0 !important; }
.p-1 { padding: var(--space-1) !important; }
.p-2 { padding: var(--space-2) !important; }
.p-3 { padding: var(--space-3) !important; }
.p-4 { padding: var(--space-4) !important; }
.p-5 { padding: var(--space-5) !important; }
.p-6 { padding: var(--space-6) !important; }

.pt-0 { padding-top: 0 !important; }
.pt-1 { padding-top: var(--space-1) !important; }
.pt-2 { padding-top: var(--space-2) !important; }
.pt-3 { padding-top: var(--space-3) !important; }
.pt-4 { padding-top: var(--space-4) !important; }

.pb-0 { padding-bottom: 0 !important; }
.pb-1 { padding-bottom: var(--space-1) !important; }
.pb-2 { padding-bottom: var(--space-2) !important; }
.pb-3 { padding-bottom: var(--space-3) !important; }
.pb-4 { padding-bottom: var(--space-4) !important; }

.pl-0 { padding-left: 0 !important; }
.pl-1 { padding-left: var(--space-1) !important; }
.pl-2 { padding-left: var(--space-2) !important; }
.pl-3 { padding-left: var(--space-3) !important; }
.pl-4 { padding-left: var(--space-4) !important; }

.pr-0 { padding-right: 0 !important; }
.pr-1 { padding-right: var(--space-1) !important; }
.pr-2 { padding-right: var(--space-2) !important; }
.pr-3 { padding-right: var(--space-3) !important; }
.pr-4 { padding-right: var(--space-4) !important; }

/* --- Utility Classes for Gaps (Flexbox) --- */
.gap-0 { gap: 0 !important; }
.gap-1 { gap: var(--space-1) !important; }
.gap-2 { gap: var(--space-2) !important; }
.gap-3 { gap: var(--space-3) !important; }
.gap-4 { gap: var(--space-4) !important; }
.gap-5 { gap: var(--space-5) !important; }

/* --- Chart Container and Component Classes --- */
.chart-container {
    position: relative;
    height: 50vh;
    width: 100%;
    margin-bottom: 10rem; /* Increased margin to prevent overlap */
}

.chart-container.large {
    height: 60vh;
}

.chart-container.pie-chart {
    width: 80%;
    max-width: 500px;
    margin: auto;
}

.loader-overlay {
    display: none;
}

.treemap-chart {
    width: 100%;
    height: 100%;
}

/* --- Treemap Legend --- */
.legend {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.legend-color {
    width: 20px;
    height: 15px;
    border-radius: 3px;
}

.legend-color.negative-high { background-color: #da594d; }
.legend-color.negative-mid { background-color: #e47e70; }
.legend-color.negative-low { background-color: #f7cfcb; }
.legend-color.neutral { background-color: #dadada; }
.legend-color.positive-low { background-color: #d1e9d1; }
.legend-color.positive-mid { background-color: #79c07c; }
.legend-color.positive-high { background-color: #4d9a4d; }

.legend-text {
    font-size: 12px;
}

/* --- Ticker Filter --- */
.ticker-filter {
    padding: var(--space-1);
    border-radius: 4px;
}

.filter-section p, .filter-section-p {
    margin-top: 0;
    font-weight: 500;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--space-1);
    margin-bottom: var(--space-2);
}

.filter-row {
    display: flex;
    align-items: center;
    margin-bottom: var(--space-1);
}

.filter-checkbox {
    margin-right: var(--space-1);
}

/* --- Form Layout Classes --- */
.form-horizontal {
    flex-direction: row;
    align-items: center;
    gap: var(--space-3);
}

.form-select-auto {
    width: auto;
}

.button-padding {
    padding: var(--space-1) var(--space-3);
}

/* --- Text Alignment Utilities --- */
.text-center { text-align: center !important; }
.text-left { text-align: left !important; }
.text-right { text-align: right !important; }
small, .text-sm {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    letter-spacing: var(--letter-spacing-normal);
}

/* Large Text */
.text-lg {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-relaxed);
    letter-spacing: var(--letter-spacing-normal);
}

/* Lead Text */
.text-lead {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-relaxed);
    letter-spacing: var(--letter-spacing-normal);
    color: var(--color-text-light);
}

#page-container {
    transition: margin-left 0.3s ease-in-out;
}

main { 
    max-width: 1200px; 
    margin: var(--container-padding) auto; 
    padding: 0 var(--container-padding); 
}

header { 
    display: flex; 
    align-items: center; 
    border-bottom: 1px solid var(--color-border); 
    padding-bottom: var(--space-2); 
    margin-bottom: var(--space-5); 
}
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--color-border-light);
}
.page-header h2 { 
    margin: 0; 
    color: var(--color-heading);
    font-weight: var(--font-weight-semibold);
}
/* Table wrapper for contained scrolling */
.table-wrapper {
    width: 100%;
    overflow-x: auto;
    margin-top: var(--space-5);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background-color: var(--color-bg-light);
}

/* Clean table styles - test compatible */
table { 
    width: 100%; 
    border-collapse: collapse; 
    margin-top: 0;
}
th, td { 
    border: 1px solid var(--color-border); 
    padding: var(--table-cell-padding); 
    text-align: left; 
}
th { 
    background-color: var(--color-bg); 
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-normal);
    letter-spacing: var(--letter-spacing-wide);
    position: sticky;
    top: 0;
    z-index: 10;
    box-shadow: 0 2px 2px -1px rgba(0, 0, 0, 0.1);
}
tr:nth-child(even) { background-color: var(--color-bg-even-row); }

/* Sensible default column widths */
table th:first-child,
table td:first-child {
    min-width: 40px; /* For checkbox columns */
}

/* Column width classes for specific columns */
.col-ticker { min-width: 80px; width: 10%; }
.col-name { min-width: 150px; width: 20%; }
.col-quantity { min-width: 100px; width: 12%; text-align: right; }
.col-price { min-width: 120px; width: 12%; text-align: right; }
.col-value { min-width: 120px; width: 15%; text-align: right; }
.col-date { min-width: 110px; width: 12%; }
.col-type { min-width: 120px; width: 12%; }
.col-actions { min-width: 150px; width: 15%; text-align: right; }

/* Skeleton loader styles */
.skeleton-loader {
    background: linear-gradient(
        90deg,
        var(--color-bg-even-row) 0%,
        var(--color-border-light) 50%,
        var(--color-bg-even-row) 100%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: var(--border-radius-sm);
    height: 20px;
    width: 100%;
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-row {
    height: 53px; /* Approximate row height */
}

.skeleton-cell {
    padding: var(--table-cell-padding);
}

/* Loading state for tables */
.table-loading {
    opacity: 0.6;
    pointer-events: none;
}
/* GitHub-inspired form and card containers */
.transaction-form, .ticker-search-section, .portfolio-summary {
    background-color: var(--color-bg-form);
    border: 1px solid var(--color-border);
    padding: var(--card-padding);
    border-radius: var(--border-radius);
    margin-bottom: var(--section-spacing);
    box-shadow: var(--shadow-1);
    
    /* GitHub-style subtle hover effect */
    transition: box-shadow 0.15s ease-in-out, border-color 0.15s ease-in-out;
}

.transaction-form:hover, .ticker-search-section:hover, .portfolio-summary:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-color: var(--color-border-light);
}
.transaction-form .form-group { 
    margin-bottom: var(--space-4); 
}

.transaction-form .form-group:last-of-type {
    margin-bottom: 0;
}
.transaction-form label { 
    font-weight: var(--font-weight-medium); 
    font-size: var(--font-size-sm);
    line-height: var(--line-height-normal);
    letter-spacing: var(--letter-spacing-normal);
    width: 100%; 
    margin-bottom: var(--space-2); 
    color: var(--color-text-light); 
    display: block; 
}
/* GitHub-inspired form input styles */
.transaction-form input, .transaction-form select {
    padding: var(--space-2);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    width: 100%;
    background-color: var(--color-bg);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    letter-spacing: var(--letter-spacing-normal);
    color: var(--color-text);
    
    /* GitHub-style subtle transitions */
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.transaction-form input:focus, .transaction-form select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.dark-mode .transaction-form input:focus, .dark-mode .transaction-form select:focus {
    box-shadow: 0 0 0 3px rgba(77, 171, 247, 0.1);
}
.transaction-form .form-actions { 
    width: 100%; 
    display: flex; 
    gap: var(--space-3); 
    align-items: center; 
    margin-top: var(--space-4);
    flex-wrap: wrap;
}

/* Form group inline layouts */
.form-group-inline {
    display: flex;
    gap: var(--space-3);
    align-items: end;
    flex-wrap: wrap;
}

.form-group-inline > div {
    flex: 1;
    min-width: 120px;
}

/* --- Cash Management Section --- */
.cash-management {
    background-color: var(--color-bg-form);
    border: 1px solid var(--color-border);
    padding: var(--card-padding);
    border-radius: var(--border-radius);
    margin-bottom: var(--section-spacing);
    box-shadow: var(--shadow-1);
    transition: box-shadow 0.15s ease-in-out, border-color 0.15s ease-in-out;
}

/* --- Transaction Filters Section --- */
.filters-section {
    background-color: var(--color-bg-form);
    border: 1px solid var(--color-border);
    padding: var(--card-padding);
    border-radius: var(--border-radius);
    margin-bottom: var(--section-spacing);
    box-shadow: var(--shadow-1);
    transition: box-shadow 0.15s ease-in-out, border-color 0.15s ease-in-out;
}

.filters-section:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-color: var(--color-border-light);
}

.filters-section h3 {
    margin: 0 0 var(--space-4) 0;
    color: var(--color-heading);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
}

.filter-form {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    align-items: end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    min-width: 150px;
}

.filter-group label {
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: var(--space-2);
}

.filter-group select {
    padding: var(--space-2);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background-color: var(--color-bg);
    font-size: var(--font-size-base);
    color: var(--color-text);
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.filter-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.filter-group .button-primary,
.filter-group .button-secondary {
    margin-top: 0;
    margin-bottom: 0;
}

/* Responsive adjustments for filters */
@media (max-width: 768px) {
    .filter-form {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-group {
        min-width: auto;
    }
    
    .filter-group:last-child {
        flex-direction: row;
        gap: var(--space-2);
        justify-content: center;
    }
}

.cash-management:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-color: var(--color-border-light);
}

.cash-management h3 {
    margin: 0 0 var(--space-4) 0;
    color: var(--color-heading);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-medium);
}

.cash-info {
    display: flex;
    gap: var(--space-4);
    align-items: center;
    margin-bottom: var(--space-4);
    padding: var(--space-3);
    background-color: var(--color-bg-light);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border-light);
}

.cash-amount {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
}

.cash-currency {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.cash-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.cash-actions .transaction-form {
    margin-bottom: 0;
    box-shadow: none;
    border: 1px solid var(--color-border-light);
    background-color: var(--color-bg);
}

.cash-actions .form-group {
    margin-bottom: 0;
}

.cash-actions .form-group-inline {
    display: flex;
    gap: var(--space-3);
    align-items: end;
}

.cash-actions .form-group-inline > div:first-child {
    flex: 1;
}

.cash-actions .form-actions {
    margin-top: 0;
    width: auto;
}

/* Responsive adjustments for cash management */
@media (max-width: 768px) {
    .cash-actions {
        grid-template-columns: 1fr;
    }
    
    .cash-info {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
    }
    
    .cash-actions .form-group-inline {
        flex-direction: column;
        align-items: stretch;
    }
    
    .cash-actions .form-actions {
        width: 100%;
    }
}

/* --- Grid and Card helpers for selection UIs (e.g., broker grid) --- */
.grid {
    display: grid;
    gap: var(--grid-gap-lg);
}
.grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}
@media (max-width: 900px) {
    .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 600px) {
    .grid-3 { grid-template-columns: 1fr; }
}

.card {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 140px;
    background-color: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-1);
    text-decoration: none;
    color: inherit;
    transition: transform 0.06s ease, box-shadow 0.12s ease, border-color 0.12s ease;
}
.card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-2);
    transform: translateY(-1px);
}
.card:active {
    transform: translateY(0);
}

.card-body {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-lg);
    padding: var(--space-4);
}

.center { text-align: center; }
.broker-name { margin-top: var(--space-2); font-size: var(--font-size-sm); color: var(--color-text-secondary); }
.broker-logo-fallback { display: inline-block; padding: var(--space-3) var(--space-6); background: var(--color-white); color: var(--color-heading); border: 1px solid var(--color-border); border-radius: var(--border-radius); }

/* Broker logo sizing inside selection cards */
.broker-logo { max-width: 140px; max-height: 48px; width: auto; height: auto; }

/* Simple dropzone look for file inputs */
.dropzone { position: relative; border: 1px solid var(--color-border); background: var(--color-bg-form); border-radius: var(--border-radius); padding: var(--space-4); text-align: center; color: var(--color-text-secondary); }
.dropzone input[type="file"] { display: block; width: 100%; max-width: 420px; margin: 0 auto var(--space-2); }
.dropzone:hover { border-color: var(--color-primary); }

/* Utility */
.text-muted { color: var(--color-text-secondary); }
/* GitHub-inspired button styles */
.button-primary { 
    padding: var(--space-2) var(--space-6); 
    background-color: var(--color-primary); 
    color: var(--color-white); 
    border: none; 
    border-radius: var(--border-radius); 
    cursor: pointer; 
    text-decoration: none; 
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    letter-spacing: var(--letter-spacing-normal);
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    min-height: 40px;
    
    /* GitHub-style subtle transition */
    transition: background-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out, transform 0.1s ease-in-out;
}

.button-primary:hover { 
    background-color: var(--color-primary-dark); 
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
    transform: translateY(-1px);
}

.button-primary:active {
    transform: translateY(0);
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
}

.button-secondary { 
    padding: var(--space-2) var(--space-6); 
    background-color: transparent; 
    color: var(--color-secondary); 
    border: 1px solid var(--color-border); 
    border-radius: var(--border-radius); 
    cursor: pointer; 
    text-decoration: none; 
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    letter-spacing: var(--letter-spacing-normal);
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    min-height: 40px;
    
    /* GitHub-style subtle transition */
    transition: border-color 0.15s ease-in-out, background-color 0.15s ease-in-out, color 0.15s ease-in-out;
}

.button-secondary:hover { 
    background-color: var(--color-bg-hover);
    border-color: var(--color-secondary);
}

/* Danger button (same size/shape as primary, in red) */
.button-danger {
    padding: var(--space-2) var(--space-6);
    background-color: var(--color-danger);
    color: var(--color-white);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    letter-spacing: var(--letter-spacing-normal);
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    min-height: 40px;

    /* Subtle transitions to match primary */
    transition: background-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out, transform 0.1s ease-in-out;
}

.button-danger:not(:disabled):hover {
    background-color: var(--color-danger-dark);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
    transform: translateY(-1px);
}

.button-danger:not(:disabled):active {
    transform: translateY(0);
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
}
.button-sm {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-normal);
    letter-spacing: var(--letter-spacing-normal);
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    min-height: 36px;
}
.green { color: var(--color-success); }
.red { color: var(--color-danger); }
.action-buttons { 
    display: flex; 
    align-items: center; 
    gap: var(--space-2); 
    flex-wrap: wrap;
}
.action-buttons form { 
    margin: 0; 
    display: flex;
}
/* GitHub-inspired edit and delete buttons */
.edit-button { 
    background-color: var(--color-warning); 
    color: var(--color-white); 
    text-decoration: none; 
    padding: var(--space-2) var(--space-3); 
    border-radius: var(--border-radius); 
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-normal);
    letter-spacing: var(--letter-spacing-normal);
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    min-height: 36px;
    
    /* GitHub-style subtle transitions */
    transition: background-color 0.15s ease-in-out, transform 0.1s ease-in-out;
}

.edit-button:hover { 
    background-color: var(--color-warning-dark); 
    transform: translateY(-1px);
}

.delete-button { 
    background-color: var(--color-danger); 
    color: var(--color-white); 
    border: none; 
    padding: var(--space-2) var(--space-3); 
    border-radius: var(--border-radius); 
    cursor: pointer; 
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-normal);
    letter-spacing: var(--letter-spacing-normal);
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    min-height: 36px;
    
    /* GitHub-style subtle transitions */
    transition: background-color 0.15s ease-in-out, transform 0.1s ease-in-out;
}

.delete-button:hover { 
    background-color: var(--color-danger-dark); 
    transform: translateY(-1px);
}

.button-danger:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Ticker Search Styles */
.ticker-input-group {
    display: flex;
    gap: var(--space-2);
    align-items: end;
}

.ticker-input-group input {
    flex: 1;
}

/* Compact ticker input for add transaction form */
.ticker-input-group .ticker-input-compact {
    flex: 0 1 250px;
    max-width: 250px;
}

.ticker-input-group .search-btn,
.ticker-input-group .reset-btn {
    padding: var(--space-2) var(--space-3);
    white-space: nowrap;
    min-height: 40px;
}

.ticker-input-group .input-with-button { 
    display: flex; 
}

.ticker-input-group .input-with-button input { 
    flex-grow: 1; 
    border-top-right-radius: 0; 
    border-bottom-right-radius: 0; 
    border-right: none;
}

/* GitHub-inspired search button */
.ticker-input-group .input-with-button .search-btn {
    padding: var(--space-2) var(--space-4);
    border: 1px solid var(--color-border);
    border-left: none;
    background-color: var(--color-bg-form);
    color: var(--color-text);
    cursor: pointer;
    border-top-right-radius: var(--border-radius);
    border-bottom-right-radius: var(--border-radius);
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    min-height: 40px;
    
    /* GitHub-style subtle transitions */
    transition: background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, transform 0.1s ease-in-out;
}

.ticker-input-group .input-with-button .search-btn:hover { 
    background-color: var(--color-bg-hover);
    border-color: var(--color-secondary);
    transform: translateY(-1px);
}

/* GitHub-inspired table hover effects */
tr {
    transition: background-color 0.15s ease-in-out;
}

tr:hover {
    background-color: var(--color-bg-hover);
}

/* GitHub-inspired alert messages - no entrance animations */
.alert { 
    padding: 15px; 
    margin-bottom: 20px; 
    border: 1px solid transparent; 
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-relaxed);
    letter-spacing: var(--letter-spacing-normal);
}

/* GitHub-inspired search result display - no entrance animations */
.search-result-display { 
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    letter-spacing: var(--letter-spacing-normal);
    padding: 8px; 
    margin-top: 5px; 
    background-color: var(--color-bg); 
    border-radius: var(--border-radius); 
    min-height: 20px; 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    flex-wrap: wrap;
}

.search-result-display:empty { display: none; }

/* Ticker suggestions list */
.ticker-suggestions {
    width: 100%;
    margin: 6px 0 0 0;
    padding: 0;
    list-style: none;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background: var(--color-bg);
    max-height: 240px;
    overflow-y: auto;
}
.ticker-suggestion-item {
    padding: 8px 10px;
    cursor: pointer;
}
.ticker-suggestion-item:hover, .ticker-suggestion-item:focus {
    background: var(--color-bg-hover);
    outline: none;
}
.ticker-suggestion-item .ts-main { font-weight: 500; }
.ticker-suggestion-item .ts-meta { font-size: 12px; color: var(--color-text-muted, var(--color-text)); }

.ticker-search-section form { display: flex; gap: 10px; }
.ticker-search-section input { flex-grow: 1; }

.ticker-search-section button { 
    background-color: var(--color-success);
    transition: background-color 0.15s ease-in-out, transform 0.1s ease-in-out;
}

.ticker-search-section button:hover { 
    background-color: var(--color-success-dark);
    transform: translateY(-1px);
}

#search-results { 
    margin-top: 15px; 
    padding: 10px; 
    background-color: var(--color-bg-form); 
    border-radius: var(--border-radius); 
    min-height: 40px;
}

#search-results h4, #search-results p { margin: 0; }
.alert-success { color: var(--color-success-text); background-color: var(--color-success-bg); border-color: var(--color-success-border); }
.alert-info { color: var(--color-info-text); background-color: var(--color-info-bg); border-color: var(--color-info-border); }
.alert-danger { color: var(--color-danger-text); background-color: var(--color-danger-bg); border-color: var(--color-danger-border); }
.nav-dropdown-item.active {
    font-weight: 500;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
}

/* GitHub-inspired period buttons */
.period-btn { 
    padding: 8px 12px; 
    border: 1px solid var(--color-border); 
    background-color: var(--color-bg-form); 
    color: var(--color-text); 
    cursor: pointer; 
    border-radius: var(--border-radius);
    
    /* GitHub-style subtle transitions */
    transition: background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, color 0.15s ease-in-out;
}

.period-btn:hover { 
    background-color: var(--color-bg-hover); 
    border-color: var(--color-secondary);
}

.period-btn.active { 
    background-color: var(--color-primary); 
    color: var(--color-white); 
    border-color: var(--color-primary); 
    box-shadow: 0 1px 3px rgba(0, 123, 255, 0.2);
}
#period-filter-buttons { display: flex; gap: 5px; }

/* GitHub-inspired general form elements */
select, input[type="number"], input[type="text"] {
    color: var(--color-text);
    background-color: var(--color-bg-form);
    border: 1px solid var(--color-border);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    letter-spacing: var(--letter-spacing-normal);
    border-radius: var(--border-radius);
    padding: var(--space-2);
    
    /* GitHub-style subtle transitions */
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

select:focus, input[type="number"]:focus, input[type="text"]:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

select option {
    background-color: var(--color-bg-form);
    color: var(--color-text);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
}

/* Typography Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.font-light { font-weight: var(--font-weight-light); }
.font-normal { font-weight: var(--font-weight-normal); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

.tracking-tight { letter-spacing: var(--letter-spacing-tight); }
.tracking-normal { letter-spacing: var(--letter-spacing-normal); }
.tracking-wide { letter-spacing: var(--letter-spacing-wide); }
.tracking-wider { letter-spacing: var(--letter-spacing-wider); }

.leading-tight { line-height: var(--line-height-tight); }
.leading-normal { line-height: var(--line-height-normal); }
.leading-relaxed { line-height: var(--line-height-relaxed); }
.leading-loose { line-height: var(--line-height-loose); }

/* Ticker Filter List for Analytics Page */
.ticker-filter-list {
    width: 200px;
    max-height: 50vh;
    overflow-y: auto;
    border: 1px solid var(--color-border);
    padding: 10px;
    border-radius: 8px;
}
/* Strategy Box Styles */
.strategy-box { border-left: 5px solid; padding: 15px; margin-bottom: 20px; border-radius: var(--border-radius); }
.strategy-box h3 { margin-top: 0; }
.strategy-green { border-color: var(--color-success); background-color: var(--color-success-bg); }
.strategy-yellow { border-color: var(--color-warning); background-color: rgba(253, 214, 99, 0.1); }
.strategy-blue { border-color: var(--color-primary); background-color: var(--color-primary-light); }
.strategy-orange { border-color: var(--color-warning-dark); background-color: rgba(249, 171, 0, 0.1); }
.strategy-red { border-color: var(--color-danger); background-color: var(--color-danger-bg); }
/* GitHub-inspired pagination styles */
.pagination { margin-top: 20px; text-align: center; }

.pagination a, .pagination strong, .pagination .ellipsis {
    display: inline-block;
    padding: 8px 12px;
    margin: 0 2px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    text-decoration: none;
    color: var(--color-primary);
    
    /* GitHub-style subtle transitions */
    transition: background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, transform 0.1s ease-in-out;
}

.pagination strong { 
    background-color: var(--color-primary); 
    color: var(--color-white); 
    border-color: var(--color-primary); 
    font-weight: 500; 
    box-shadow: 0 1px 3px rgba(0, 123, 255, 0.2);
}

.pagination a:hover { 
    background-color: var(--color-border-light);
    border-color: var(--color-secondary);
    transform: translateY(-1px);
}

/* --- Google-inspired Dropdown Styles (Currency Selector) --- */
.nav-dropdown-wrapper {
    position: relative;
    margin: 10px 15px;
}
/* GitHub-inspired navigation dropdown */
.nav-dropdown-toggle {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 10px 12px;
    background-color: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    cursor: pointer;
    text-align: left;
    font-family: inherit;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    letter-spacing: var(--letter-spacing-normal);
    color: var(--color-text);
    
    /* GitHub-style subtle transitions */
    transition: background-color 0.15s ease-in-out, border-color 0.15s ease-in-out;
}

.nav-dropdown-toggle:hover {
    background-color: var(--color-bg-hover);
    border-color: var(--color-secondary);
}

.nav-dropdown-item {
    display: block;
    padding: 10px 15px;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    letter-spacing: var(--letter-spacing-normal);
    color: var(--color-text);
    text-decoration: none;
    
    /* GitHub-style subtle transitions */
    transition: background-color 0.15s ease-in-out, color 0.15s ease-in-out;
}

.nav-dropdown-item:hover {
    background-color: var(--color-bg-hover);
    color: var(--color-primary);
}
.nav-dropdown-label {
    color: var(--color-text-secondary);
    margin-right: 6px;
}

.nav-dropdown-arrow {
    margin-left: auto;
    font-size: 0.8em;
    transition: transform 0.15s ease-in-out;
}

.nav-dropdown-menu {
    display: none; /* Hidden by default */
    position: absolute;
    bottom: 100%; /* Position above the button */
    left: 0;
    width: 100%;
    background-color: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    box-shadow: var(--shadow-2);
    z-index: 100;
    margin-bottom: 8px;
    max-height: 200px;
    overflow-y: auto;
}

.nav-dropdown-menu.show {
    display: block; /* Show with JS */
}

/* --- Side Navigation --- */
.side-nav {
    height: 100%;
    width: 250px;
    position: fixed;
    z-index: 1000;
    top: 0;
    left: -250px; /* Start off-screen */
    background-color: var(--color-bg-light);
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    transition: left 0.3s ease-in-out;
    box-shadow: var(--shadow-2);
}

.side-nav .nav-title-link {
    text-decoration: none;
    display: block;
}

.side-nav .nav-title-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 22px 60px 22px 32px;
    border-bottom: 1px solid var(--color-border);
}

.side-nav .nav-logo {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
}

.side-nav .nav-title {
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
    color: var(--color-heading);
}

/* GitHub-inspired side navigation */
.side-nav a {
    padding: 10px 15px 10px 32px;
    text-decoration: none;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    letter-spacing: var(--letter-spacing-normal);
    color: var(--color-secondary);
    display: flex;
    align-items: center;
    gap: 10px;
    
    /* GitHub-style subtle transitions */
    transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out;
}

.side-nav a:hover {
    color: var(--color-primary);
    background-color: #e8e8e8;
}

.side-nav a.active {
    background-color: #f0f0f0;
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
}

.side-nav .nav-footer {
    margin-top: auto; /* Pushes the footer to the bottom */
    padding: 12px;
    border-top: 1px solid var(--color-border);
}

.nav-footer-controls {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
}

.nav-dropdown-wrapper {
    flex-grow: 1;
}

.open-btn {
    font-size: 24px;
    cursor: pointer;
    margin-right: 20px;
    color: var(--color-secondary);
}

/* When nav is open */
.side-nav-open .side-nav {
    left: 0;
}

/* --- Responsive Styles for Mobile --- */
@media (max-width: 768px) {
    body {
        /* Reduce side padding and top margin on smaller screens */
        padding: 0 10px;
        margin: 10px auto;
    }

    /* Table wrapper handles scrolling on mobile */
    .table-wrapper {
        border: none;
        border-radius: 0;
        margin-top: 0;
    }
    
    table {
        min-width: 100%;
        /* Keep table display intact for test compatibility */
    }
    
    /* Disable sticky headers on mobile for better card layout */
    th {
        position: static;
        box-shadow: none;
    }

    /* Adjust padding on forms for better spacing on small screens */
    .transaction-form,
    .ticker-search-section,
    .portfolio-summary { padding: 15px; }

    /* Allow flexbox-based forms and button groups to wrap */
    .transaction-form .form-actions,
    .ticker-search-section form {
        flex-wrap: wrap;
    }

    /* On mobile, add an overlay instead of pushing content */
    #page-container::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out;
    }

    .side-nav-open #page-container::before {
        opacity: 1;
        visibility: visible;
    }

    /* --- Analytics Page Mobile Responsiveness --- */
    /* Stack charts vertically instead of side-by-side layout */
    .analytics-controls {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-3);
    }

    .analytics-controls > div {
        text-align: center;
    }

    /* Make pie chart container stack vertically on mobile */
    .chart-container.pie-chart {
        flex-direction: column !important;
        width: 100% !important;
        max-width: none !important;
        gap: var(--space-4) !important;
    }

    .chart-container.pie-chart > div {
        flex: none !important;
        width: 100% !important;
    }

    /* Stack performance grid vertically */
    .performance-grid {
        flex-direction: column;
        gap: var(--space-4);
    }

    .ticker-filter-list {
        min-width: auto;
        max-height: 300px;
        overflow-y: auto;
        border: 1px solid var(--color-border);
        border-radius: var(--border-radius);
        padding: var(--space-3);
    }

    /* Optimize chart heights for mobile */
    .chart-container {
        height: 40vh !important;
        margin-bottom: var(--space-6);
    }

    .chart-container.large {
        height: 45vh !important;
    }

    /* Make treemap controls wrap nicely */
    .treemap-controls {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--space-2);
    }

    /* Improve period button layout */
    .analytics-controls-center div,
    #history-period-buttons,
    #performance-period-buttons {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--space-1);
    }

    .period-btn {
        padding: var(--space-1) var(--space-2);
        margin: 2px;
        min-width: auto;
    }

    /* --- Card-based Table Layout for Mobile --- */
    /* Hide table headers on mobile */
    table thead {
        display: none;
    }

    /* Convert table rows to cards */
    table tbody tr {
        display: block;
        background: var(--color-bg-light);
        border: 1px solid var(--color-border);
        border-radius: var(--border-radius);
        margin-bottom: var(--space-3);
        padding: var(--space-3);
        position: relative;
    }

    /* Style table cells as card items */
    table tbody td {
        display: block;
        text-align: left !important;
        padding: var(--space-1) 0;
        border: none;
        position: relative;
        padding-left: 40%;
    }

    /* Add labels before each cell content */
    table tbody td:before {
        content: attr(data-label);
        position: absolute;
        left: 0;
        top: var(--space-1);
        font-weight: 600;
        color: var(--color-text-secondary);
        text-transform: uppercase;
        font-size: var(--font-size-xs);
        width: 35%;
    }

    /* Special handling for action cells */
    table tbody td:last-child {
        text-align: center !important;
        padding-left: 0;
        margin-top: var(--space-2);
        border-top: 1px solid var(--color-border-light);
        padding-top: var(--space-2);
    }

    table tbody td:last-child:before {
        display: none;
    }

    /* Checkbox column handling */
    table tbody td:first-child {
        padding-left: 0;
        text-align: center;
    }

    table tbody td:first-child:before {
        display: none;
    }

    /* Additional mobile improvements for forms and buttons */
    .button-group {
        flex-direction: column;
        gap: var(--space-2);
    }

    .button-group button,
    .button-group .button {
        width: 100%;
        margin: 0;
    }

    /* Improve pagination on mobile */
    .pagination {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--space-1);
    }

    .pagination a,
    .pagination span {
        padding: var(--space-1) var(--space-2);
        margin: 2px;
    }

    /* Better mobile navigation spacing */
    .side-nav a {
        padding: var(--space-3) var(--space-4);
    }

    /* Improve page headers on mobile */
    .page-header {
        text-align: center;
        margin-bottom: var(--space-4);
    }

    .page-header h2 {
        font-size: var(--font-size-xl);
        line-height: 1.3;
    }
}

/* --- Responsive Styles for Desktop --- */
@media (min-width: 769px) {
    body {
        max-width: none; /* Allow full width on desktop */
    }
    /* On desktop, when the nav is open, push the main content to the right */
    .side-nav-open #page-container {
        margin-left: 250px;
    }
}

/* --- Sortable Table Header Styles --- */
th a {
    text-decoration: none;
    color: inherit;
    display: flex;
    align-items: center;
    gap: 8px; /* Space between text and arrows */
}
th a:hover {
    text-decoration: underline;
}
.sort-arrows {
    display: inline-flex;
    flex-direction: column;
    gap: 2px; /* Space between the two arrows */
}
.sort-arrow {
    display: flex; /* Center SVG inside */
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    color: var(--color-secondary); /* Default arrow color */
    background-color: var(--color-border-light);
    border-radius: 4px;
    transition: color 0.2s ease, background-color 0.2s ease, opacity 0.2s ease;
    opacity: 0.6;
}
.sort-arrow svg {
    width: 12px;
    height: 12px;
    fill: currentColor;
}
th a:hover .sort-arrow {
    opacity: 1;
    background-color: var(--color-border);
}
th.sorted .sort-arrow {
    color: var(--color-white);
    background-color: var(--color-primary);
    opacity: 0.8;
}
th.sorted-asc .sort-arrows .sort-arrow.asc,
th.sorted-desc .sort-arrows .sort-arrow.desc {
    opacity: 1;
    color: var(--color-white);
    background-color: var(--color-primary);
}
th.sorted a {
    font-weight: 500;
}

/* --- Theme Toggle --- */
.theme-toggle-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 10px 15px; /* Align with dropdown for consistency */
}

.theme-toggle-btn {
    width: 56px; /* Wider for the thumb */
    height: 30px;
    background-color: var(--color-border); /* Track color */
    border: none;
    border-radius: 15px; /* Half of height for pill shape */
    cursor: pointer;
    position: relative;
    transition: background-color 0.3s ease;
    padding: 0; /* Remove padding to control thumb position precisely */
}

.theme-toggle-btn::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 26px; /* Thumb size */
    height: 26px;
    background-color: var(--color-bg-light); /* Thumb color */
    border-radius: 50%;
    box-shadow: var(--shadow-1);
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.theme-toggle-btn .theme-icon {
    position: absolute;
    font-size: 16px;
    line-height: 1;
    transition: opacity 0.3s ease, transform 0.3s ease;
    color: var(--color-text-light); /* Icon color */
}

.theme-toggle-btn .sun {
    left: 8px;
    opacity: 1;
    transform: translateX(0);
}

.theme-toggle-btn .moon {
    right: 8px;
    opacity: 0;
    transform: translateX(0);
}

/* Dark mode active styles */
.dark-mode .theme-toggle-btn {
    background-color: var(--color-primary); /* Track color in dark mode */
}

.dark-mode .theme-toggle-btn::before {
    transform: translateX(26px); /* Move thumb to the right */
    background-color: var(--color-white); /* Thumb color in dark mode */
}

.dark-mode .theme-toggle-btn .sun {
    opacity: 0;
    transform: translateX(-5px); /* Slide sun out */
}

.dark-mode .theme-toggle-btn .moon {
    opacity: 1;
    transform: translateX(0); /* Slide moon in */
}

.dark-mode .side-nav a:hover {
    background-color: #2a2a2a;
}

.dark-mode .side-nav a.active {
    background-color: #2c2c2c;
    color: var(--color-primary);
}

/* Refine Currency Switch for better visual integration */
.nav-dropdown-wrapper {
    margin: 10px 0; /* Adjust margin to fit better with new toggle */
    flex-grow: 1; /* Allow it to take available space */
}

.nav-dropdown-toggle {
    padding: 8px 12px; /* Slightly less padding for a more compact look */
    border-radius: 15px; /* More rounded corners */
}

.nav-dropdown-menu {
    border-radius: 15px; /* Match toggle button rounding */
    box-shadow: var(--shadow-2);
}

.nav-dropdown-item {
    padding: 8px 15px; /* Consistent padding */
}

/* --- Rebalancing Page Styles --- */
.rebalancing-recommendation {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    transition: box-shadow 0.2s ease-in-out;
}

.rebalancing-recommendation:hover {
    box-shadow: var(--shadow-1);
}

.recommendation-header h4 {
    font-size: 1.1em;
    line-height: 1.3;
}

.recommendation-details {
    font-size: 0.9em;
    color: var(--color-text-muted);
}

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

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

.alert {
    padding: var(--card-padding);
    margin-bottom: var(--element-spacing);
    border: 1px solid transparent;
    border-radius: var(--border-radius);
}

.alert-info {
    background-color: rgba(13, 110, 253, 0.1);
    border-color: rgba(13, 110, 253, 0.2);
    color: var(--color-text);
}

.alert h5 {
    margin-bottom: var(--space-2);
    color: var(--color-text);
}

.alert ul {
    margin-bottom: 0;
    padding-left: var(--space-5);
}

.alert li {
    margin-bottom: var(--space-1);
}

/* --- Additional Mobile Responsiveness for Small Screens --- */
@media (max-width: 480px) {
    body {
        padding: 0 5px;
        margin: 5px auto;
    }

    /* Further optimize chart heights for very small screens */
    .chart-container {
        height: 35vh !important;
        margin-bottom: var(--space-4);
    }

    .chart-container.large {
        height: 40vh !important;
    }

    /* Compact period buttons on very small screens */
    .period-btn {
        padding: 6px 8px;
        font-size: var(--font-size-xs);
        margin: 1px;
    }

    /* Stack analytics controls more tightly */
    .analytics-controls {
        gap: var(--space-2);
    }

    /* Reduce card padding on very small screens */
    table tbody tr {
        padding: var(--space-2);
    }

    table tbody td {
        padding-left: 35%;
    }

    table tbody td:before {
        width: 30%;
        font-size: 10px;
    }

    /* Improve form layouts on very small screens */
    .form-group-inline {
        flex-direction: column !important;
        gap: var(--space-2);
    }

    .form-actions {
        flex-direction: column;
        gap: var(--space-2);
    }

    .form-actions button,
    .form-actions .button-primary,
    .form-actions .button-secondary,
    .form-actions .button-danger {
        width: 100%;
        justify-content: center;
    }

    .action-buttons {
        flex-direction: column;
        gap: var(--space-2);
        align-items: stretch;
    }

    .action-buttons .edit-button,
    .action-buttons .delete-button,
    .action-buttons .button-secondary {
        width: 100%;
        justify-content: center;
    }
}

/* --- Tablet and Medium Screen Optimizations --- */
@media (max-width: 1024px) and (min-width: 769px) {
    /* Optimize analytics layout for tablets */
    .performance-grid {
        flex-direction: column;
        gap: var(--space-4);
    }

    .ticker-filter-list {
        min-width: auto;
        display: flex;
        flex-wrap: wrap;
        gap: var(--space-2);
        justify-content: center;
    }

    .ticker-filter-list .filter-row {
        flex: 0 0 auto;
        margin-right: var(--space-3);
    }

    /* Improve chart sizing on tablets */
    .chart-container {
        height: 45vh;
    }

    .chart-container.large {
        height: 55vh;
    }
}

/* ===== Shared Animations ===== */

/* Shimmer animation for skeleton loaders */
@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}