/**
 * Financial Analytics Platform - Main Application Styles
 * Dark theme with blue/purple accent colors
 */

/* ============================================================================
   CSS Variables - Design Tokens
   ============================================================================ */
:root {
    /* Colors - Base */
    --color-bg-primary: #0f172a;
    --color-bg-secondary: rgba(15, 23, 42, 0.6);
    --color-bg-tertiary: rgba(30, 41, 59, 0.8);
    --color-bg-dark: #020617;
    --color-border: #1f2937;
    --color-border-light: rgba(31, 41, 55, 0.5);
    --color-border-dark: #111827;
    --color-border-medium: #374151;

    /* Colors - Text */
    --color-text-primary: #e5e7eb;
    --color-text-secondary: #9ca3af;
    --color-text-muted: #6b7280;
    --color-text-placeholder: #4b5563;
    --color-text-accent: #a5b4fc;

    /* Colors - Accent */
    --color-primary: #4f46e5;
    --color-primary-light: #60a5fa;
    --color-primary-lighter: #93c5fd;
    --color-primary-bg: rgba(79, 70, 229, 0.1);
    --color-primary-border: rgba(79, 70, 229, 0.3);

    --color-secondary: #8b5cf6;
    --color-secondary-light: #a78bfa;

    /* Colors - Semantic */
    --color-success: #22c55e;
    --color-success-light: #bbf7d0;
    --color-success-bg: rgba(34, 197, 94, 0.15);
    --color-success-border: rgba(34, 197, 94, 0.3);

    --color-danger: #ef4444;
    --color-danger-light: #fecaca;
    --color-danger-bg: rgba(239, 68, 68, 0.15);
    --color-danger-border: rgba(239, 68, 68, 0.3);

    --color-warning: #eab308;
    --color-warning-light: #fde68a;
    --color-warning-bg: rgba(234, 179, 8, 0.15);
    --color-warning-border: rgba(234, 179, 8, 0.3);

    --color-info: #3b82f6;
    --color-info-light: #bfdbfe;
    --color-info-bg: rgba(59, 130, 246, 0.1);
    --color-info-border: rgba(59, 130, 246, 0.3);

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 11px;
    --font-size-sm: 13px;
    --font-size-base: 14px;
    --font-size-lg: 16px;
    --font-size-xl: 18px;
    --font-size-2xl: 24px;
    --font-size-3xl: 28px;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 20px;
    --spacing-2xl: 24px;
    --spacing-3xl: 32px;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.4);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.2s ease;
    --transition-slow: 0.3s ease;

    /* Component Patterns - Cards */
    --card-bg: rgba(15, 23, 42, 0.9);
    --card-border: #1f2937;
    --card-shadow: none;
    --card-hover-border: rgba(79, 70, 229, 0.4);
    --card-hover-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);

    /* Component Patterns - Inputs */
    --input-bg: #020617;
    --input-border: #1f2937;
    --input-text: #e5e7eb;
    --input-placeholder: #4b5563;
    --input-focus-border: #4f46e5;
    --input-focus-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);

    /* Component Patterns - Tables */
    --table-header-bg: #0f172a;
    --table-header-text: #9ca3af;
    --table-row-border: #1f2937;
    --table-row-hover: rgba(79, 70, 229, 0.05);
    --table-cell-text: #e5e7eb;

    /* Component Patterns - Sections */
    --section-bg: rgba(15, 23, 42, 0.6);
    --section-border: #1f2937;
    --section-divider: #1f2937;
    --heading-color: #e5e7eb;
    --body-text: #9ca3af;
    --muted-text: #6b7280;
    --link-color: #a5b4fc;
    --link-hover-color: #c7d2fe;
}

/* ============================================================================
   Light Theme - Applied via class on <html>
   ============================================================================ */
html.theme-light {
    /* Colors - Base */
    --color-bg-primary: #f8fafc;
    --color-bg-secondary: rgba(241, 245, 249, 0.8);
    --color-bg-tertiary: rgba(226, 232, 240, 0.6);
    --color-bg-dark: #f1f5f9;
    --color-border: #e2e8f0;
    --color-border-light: rgba(226, 232, 240, 0.5);
    --color-border-dark: #cbd5e1;
    --color-border-medium: #94a3b8;

    /* Colors - Text */
    --color-text-primary: #1e293b;
    --color-text-secondary: #475569;
    --color-text-muted: #64748b;
    --color-text-placeholder: #94a3b8;
    --color-text-accent: #4338ca;

    /* Colors - Accent */
    --color-primary: #4f46e5;
    --color-primary-light: #4338ca;
    --color-primary-lighter: #3730a3;
    --color-primary-bg: rgba(79, 70, 229, 0.08);
    --color-primary-border: rgba(79, 70, 229, 0.2);

    --color-secondary: #7c3aed;
    --color-secondary-light: #6d28d9;

    /* Colors - Semantic */
    --color-success: #16a34a;
    --color-success-light: #166534;
    --color-success-bg: rgba(22, 163, 74, 0.1);
    --color-success-border: rgba(22, 163, 74, 0.25);

    --color-danger: #dc2626;
    --color-danger-light: #7f1d1d;
    --color-danger-bg: rgba(220, 38, 38, 0.08);
    --color-danger-border: rgba(220, 38, 38, 0.2);

    --color-warning: #ca8a04;
    --color-warning-light: #713f12;
    --color-warning-bg: rgba(202, 138, 4, 0.08);
    --color-warning-border: rgba(202, 138, 4, 0.2);

    --color-info: #2563eb;
    --color-info-light: #1e40af;
    --color-info-bg: rgba(37, 99, 235, 0.08);
    --color-info-border: rgba(37, 99, 235, 0.2);

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

    /* Component Patterns - Cards */
    --card-bg: #ffffff;
    --card-border: #e2e8f0;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
    --card-hover-border: #c7d2fe;
    --card-hover-shadow: 0 8px 25px rgba(79, 70, 229, 0.08), 0 4px 6px rgba(0, 0, 0, 0.04);

    /* Component Patterns - Inputs */
    --input-bg: #ffffff;
    --input-border: #e2e8f0;
    --input-text: #1e293b;
    --input-placeholder: #94a3b8;
    --input-focus-border: #6366f1;
    --input-focus-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);

    /* Component Patterns - Tables */
    --table-header-bg: #f8fafc;
    --table-header-text: #475569;
    --table-row-border: #f1f5f9;
    --table-row-hover: #f8fafc;
    --table-cell-text: #1e293b;

    /* Component Patterns - Sections */
    --section-bg: #ffffff;
    --section-border: #e2e8f0;
    --section-divider: #f1f5f9;
    --heading-color: #1e293b;
    --body-text: #475569;
    --muted-text: #64748b;
    --link-color: #4f46e5;
    --link-hover-color: #4338ca;
}

/* ============================================================================
   Reset and Base Styles
   ============================================================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    min-height: 100vh;
}

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

a:hover {
    color: var(--color-primary-lighter);
}

/* ============================================================================
   Layout
   ============================================================================ */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

main {
    min-height: calc(100vh - 200px);
    padding: var(--spacing-2xl) 0;
}

/* ============================================================================
   Page Headers
   ============================================================================ */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-2xl);
    gap: var(--spacing-lg);
}

.page-header h1 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--color-text-primary);
    margin: 0 0 var(--spacing-sm) 0;
}

.page-header-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-shrink: 0;
}

/* ============================================================================
   Breadcrumbs
   ============================================================================ */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xl);
    list-style: none;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "/";
    margin-right: var(--spacing-sm);
    color: var(--color-text-muted);
}

.breadcrumb-item a {
    color: var(--color-primary-light);
}

.breadcrumb-item a:hover {
    color: var(--color-primary-lighter);
}

.breadcrumb-item.active {
    color: var(--color-text-muted);
}

/* ============================================================================
   Meta Information
   ============================================================================ */
.meta-info {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
    flex-wrap: wrap;
}

.meta-item {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.meta-item strong {
    color: var(--color-text-primary);
}

/* ============================================================================
   Typography
   ============================================================================ */
h1, h2, h3, h4, h5, h6 {
    color: var(--color-text-primary);
    font-weight: 600;
    line-height: 1.3;
}

h1 { font-size: var(--font-size-2xl); }
h2 { font-size: var(--font-size-xl); margin-bottom: var(--spacing-xl); }
h3 { font-size: var(--font-size-lg); }
h4 { font-size: var(--font-size-base); }

p {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

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

/* ============================================================================
   Grid Layouts
   ============================================================================ */
.grid {
    display: grid;
    gap: var(--spacing-xl);
}

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

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid-auto {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

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

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }
.mt-5 { margin-top: var(--spacing-2xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }
.mb-5 { margin-bottom: var(--spacing-2xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }
.p-4 { padding: var(--spacing-xl); }

/* ============================================================================
   Responsive
   ============================================================================ */
@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg);
    }

    .page-header {
        flex-direction: column;
    }

    .page-header-actions {
        width: 100%;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}
