/**
 * SubMarketIQ - Global Design System
 * 
 * Core design tokens and base styles for the application.
 * Color palette converted from OKLCH to standard CSS.
 */

/* ===========================================
   GOOGLE FONTS
   =========================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ===========================================
   DESIGN TOKENS (CSS VARIABLES)
   =========================================== */
:root {
    /* -----------------------------
       COLOR PALETTE
       ----------------------------- */

    /* Primary - Professional Blue/Slate */
    --color-primary: #2d4a65;
    --color-primary-hover: #233a52;
    --color-primary-light: #3d5a75;
    --color-primary-foreground: #ffffff;

    /* Backgrounds */
    --color-background: #fcfcfc;
    --color-surface: #ffffff;
    --color-surface-elevated: #ffffff;

    /* Text */
    --color-text: #1a2533;
    --color-text-muted: #6b7a8f;
    --color-text-light: #9ca3af;

    /* Borders */
    --color-border: #e5e8ed;
    --color-border-light: #f0f2f5;
    --color-input: #e5e8ed;

    /* Secondary/Accent */
    --color-secondary: #f0f4f8;
    --color-secondary-foreground: #2d4a65;
    --color-accent: #f0f4f8;
    --color-accent-foreground: #2d4a65;
    --color-muted: #f0f4f8;
    --color-muted-foreground: #6b7a8f;

    /* Semantic Colors */
    --color-success: #10b981;
    --color-success-light: #d1fae5;
    --color-success-dark: #059669;

    --color-warning: #f59e0b;
    --color-warning-light: #fef3c7;
    --color-warning-dark: #d97706;

    --color-error: #ef4444;
    --color-error-light: #fee2e2;
    --color-error-dark: #dc2626;
    --color-destructive: #ef4444;
    --color-destructive-foreground: #ffffff;

    --color-info: #3b82f6;
    --color-info-light: #dbeafe;
    --color-info-dark: #2563eb;

    /* Chart Colors */
    --color-chart-1: #4a9eba;
    --color-chart-2: #5bb5a3;
    --color-chart-3: #6366f1;
    --color-chart-4: #14b8a6;
    --color-chart-5: #3b82f6;

    /* Grade Colors (for market investability grades) */
    --color-grade-a: #10b981;
    --color-grade-b: #3b82f6;
    --color-grade-c: #f59e0b;
    --color-grade-d: #f97316;
    --color-grade-f: #ef4444;

    /* Trend Colors */
    --color-trend-up: #10b981;
    --color-trend-down: #ef4444;
    --color-trend-neutral: #6b7a8f;

    /* -----------------------------
       SPACING (8-point grid)
       ----------------------------- */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;

    /* -----------------------------
       TYPOGRAPHY
       ----------------------------- */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --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-size-5xl: 3rem;
    /* 48px */

    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* -----------------------------
       BORDERS & RADIUS
       ----------------------------- */
    --border-width: 1px;
    --border-radius-sm: 4px;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    --border-radius-full: 9999px;

    /* -----------------------------
       SHADOWS
       ----------------------------- */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.08), 0 4px 6px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.10), 0 10px 10px rgba(0, 0, 0, 0.04);

    /* -----------------------------
       TRANSITIONS
       ----------------------------- */
    --transition-fast: 150ms ease;
    --transition-normal: 200ms ease;
    --transition-slow: 300ms ease;

    /* -----------------------------
       Z-INDEX SCALE
       ----------------------------- */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
    --z-toast: 800;

    /* -----------------------------
       CONTAINER WIDTHS
       ----------------------------- */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-2xl: 1400px;
}

/* ===========================================
   DARK MODE
   Activated by: data-theme="dark" on html element
   or via system preference when data-theme not set
   =========================================== */

/* Dark mode via system preference (when no theme is set) */
@media (prefers-color-scheme: dark) {
    html:not([data-theme="light"]) {
        --color-primary: #5d8aa8;
        --color-primary-hover: #7ba3be;
        --color-primary-light: #3d6580;
        --color-primary-foreground: #ffffff;

        --color-background: #0f1419;
        --color-surface: #1a1f26;
        --color-surface-elevated: #242b35;

        --color-text: #e8edf2;
        --color-text-muted: #9ba7b4;
        --color-text-light: #6b7a8f;

        --color-border: #2d3640;
        --color-border-light: #242b35;
        --color-input: #2d3640;

        --color-secondary: #1e252e;
        --color-secondary-foreground: #9cc1dd;
        --color-accent: #1e252e;
        --color-accent-foreground: #9cc1dd;
        --color-muted: #1e252e;
        --color-muted-foreground: #9ba7b4;

        --color-success: #22c55e;
        --color-success-light: #052e16;
        --color-success-dark: #4ade80;

        --color-warning: #fbbf24;
        --color-warning-light: #422006;
        --color-warning-dark: #fcd34d;

        --color-error: #f87171;
        --color-error-light: #450a0a;
        --color-error-dark: #fca5a5;
        --color-destructive: #f87171;
        --color-destructive-foreground: #0f0f0f;

        --color-info: #60a5fa;
        --color-info-light: #1e3a5f;
        --color-info-dark: #93c5fd;

        --color-chart-1: #5bb5c8;
        --color-chart-2: #6bcbb5;
        --color-chart-3: #818cf8;
        --color-chart-4: #2dd4bf;
        --color-chart-5: #60a5fa;

        --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
        --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4), 0 1px 2px rgba(0, 0, 0, 0.3);
        --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4), 0 2px 4px rgba(0, 0, 0, 0.3);
        --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5), 0 4px 6px rgba(0, 0, 0, 0.3);
        --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.5), 0 10px 10px rgba(0, 0, 0, 0.3);

        color-scheme: dark;
    }
}

/* Dark mode via explicit data-theme attribute */
html[data-theme="dark"] {
    --color-primary: #5d8aa8;
    --color-primary-hover: #7ba3be;
    --color-primary-light: #3d6580;
    --color-primary-foreground: #ffffff;

    --color-background: #0f1419;
    --color-surface: #1a1f26;
    --color-surface-elevated: #242b35;

    --color-text: #e8edf2;
    --color-text-muted: #9ba7b4;
    --color-text-light: #6b7a8f;

    --color-border: #2d3640;
    --color-border-light: #242b35;
    --color-input: #2d3640;

    --color-secondary: #1e252e;
    --color-secondary-foreground: #9cc1dd;
    --color-accent: #1e252e;
    --color-accent-foreground: #9cc1dd;
    --color-muted: #1e252e;
    --color-muted-foreground: #9ba7b4;

    --color-success: #22c55e;
    --color-success-light: #052e16;
    --color-success-dark: #4ade80;

    --color-warning: #fbbf24;
    --color-warning-light: #422006;
    --color-warning-dark: #fcd34d;

    --color-error: #f87171;
    --color-error-light: #450a0a;
    --color-error-dark: #fca5a5;
    --color-destructive: #f87171;
    --color-destructive-foreground: #0f0f0f;

    --color-info: #60a5fa;
    --color-info-light: #1e3a5f;
    --color-info-dark: #93c5fd;

    --color-chart-1: #5bb5c8;
    --color-chart-2: #6bcbb5;
    --color-chart-3: #818cf8;
    --color-chart-4: #2dd4bf;
    --color-chart-5: #60a5fa;

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4), 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4), 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5), 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.5), 0 10px 10px rgba(0, 0, 0, 0.3);

    color-scheme: dark;
}

/* ===========================================
   CSS RESET & BASE STYLES
   =========================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

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

/* ===========================================
   TYPOGRAPHY BASE
   =========================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

h1 {
    font-size: var(--font-size-4xl);
}

h2 {
    font-size: var(--font-size-3xl);
}

h3 {
    font-size: var(--font-size-2xl);
}

h4 {
    font-size: var(--font-size-xl);
}

h5 {
    font-size: var(--font-size-lg);
}

h6 {
    font-size: var(--font-size-base);
}

p {
    margin-bottom: var(--space-md);
}

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

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

/* ===========================================
   LINKS & INTERACTIVE
   =========================================== */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ===========================================
   IMAGES & MEDIA
   =========================================== */
img,
video {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ===========================================
   LISTS
   =========================================== */
ul,
ol {
    padding-left: var(--space-lg);
    margin-bottom: var(--space-md);
}

/* ===========================================
   TABLES (base reset)
   =========================================== */
table {
    border-collapse: collapse;
    border-spacing: 0;
    width: 100%;
}

/* ===========================================
   UTILITY CLASSES
   =========================================== */

/* Container */
.container {
    width: 100%;
    max-width: var(--container-xl);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--space-md);
    padding-right: var(--space-md);
}

/* Text alignment */
.text-left {
    text-align: left;
}

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

.text-right {
    text-align: right;
}

/* Text colors */
.text-muted {
    color: var(--color-text-muted);
}

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

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

.text-warning {
    color: var(--color-warning);
}

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

/* Font weights */
.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);
}

/* Font sizes */
.text-xs {
    font-size: var(--font-size-xs);
}

.text-sm {
    font-size: var(--font-size-sm);
}

.text-base {
    font-size: var(--font-size-base);
}

.text-lg {
    font-size: var(--font-size-lg);
}

.text-xl {
    font-size: var(--font-size-xl);
}

.text-2xl {
    font-size: var(--font-size-2xl);
}

.text-3xl {
    font-size: var(--font-size-3xl);
}

.text-4xl {
    font-size: var(--font-size-4xl);
}

/* Display */
.hidden {
    display: none;
}

.block {
    display: block;
}

.inline {
    display: inline;
}

.inline-block {
    display: inline-block;
}

.flex {
    display: flex;
}

.inline-flex {
    display: inline-flex;
}

.grid {
    display: grid;
}

/* Flexbox utilities */
.flex-col {
    flex-direction: column;
}

.flex-row {
    flex-direction: row;
}

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

.flex-1 {
    flex: 1;
}

.items-start {
    align-items: flex-start;
}

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

.items-end {
    align-items: flex-end;
}

.justify-start {
    justify-content: flex-start;
}

.justify-center {
    justify-content: center;
}

.justify-end {
    justify-content: flex-end;
}

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

/* Gap */
.gap-1 {
    gap: var(--space-xs);
}

.gap-2 {
    gap: var(--space-sm);
}

.gap-3 {
    gap: calc(var(--space-sm) + var(--space-xs));
}

.gap-4 {
    gap: var(--space-md);
}

.gap-6 {
    gap: var(--space-lg);
}

.gap-8 {
    gap: var(--space-xl);
}

/* Margin */
.mb-1 {
    margin-bottom: var(--space-xs);
}

.mb-2 {
    margin-bottom: var(--space-sm);
}

.mb-4 {
    margin-bottom: var(--space-md);
}

.mb-6 {
    margin-bottom: var(--space-lg);
}

.mb-8 {
    margin-bottom: var(--space-xl);
}

.mt-1 {
    margin-top: var(--space-xs);
}

.mt-2 {
    margin-top: var(--space-sm);
}

.mt-4 {
    margin-top: var(--space-md);
}

.mt-6 {
    margin-top: var(--space-lg);
}

.mt-8 {
    margin-top: var(--space-xl);
}

/* Padding */
.p-2 {
    padding: var(--space-sm);
}

.p-4 {
    padding: var(--space-md);
}

.p-6 {
    padding: var(--space-lg);
}

.p-8 {
    padding: var(--space-xl);
}

.px-2 {
    padding-left: var(--space-sm);
    padding-right: var(--space-sm);
}

.px-4 {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
}

.px-6 {
    padding-left: var(--space-lg);
    padding-right: var(--space-lg);
}

.py-2 {
    padding-top: var(--space-sm);
    padding-bottom: var(--space-sm);
}

.py-4 {
    padding-top: var(--space-md);
    padding-bottom: var(--space-md);
}

.py-8 {
    padding-top: var(--space-xl);
    padding-bottom: var(--space-xl);
}

.py-12 {
    padding-top: var(--space-2xl);
    padding-bottom: var(--space-2xl);
}

.py-20 {
    padding-top: 80px;
    padding-bottom: 80px;
}

/* Width */
.w-full {
    width: 100%;
}

.max-w-md {
    max-width: var(--container-md);
}

.max-w-lg {
    max-width: var(--container-lg);
}

.max-w-xl {
    max-width: var(--container-xl);
}

.max-w-2xl {
    max-width: var(--container-2xl);
}

/* Border radius */
.rounded {
    border-radius: var(--border-radius);
}

.rounded-sm {
    border-radius: var(--border-radius-sm);
}

.rounded-lg {
    border-radius: var(--border-radius-lg);
}

.rounded-xl {
    border-radius: var(--border-radius-xl);
}

.rounded-full {
    border-radius: var(--border-radius-full);
}

/* Shadows */
.shadow-sm {
    box-shadow: var(--shadow-sm);
}

.shadow-md {
    box-shadow: var(--shadow-md);
}

.shadow-lg {
    box-shadow: var(--shadow-lg);
}

/* Visibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ===========================================
   RESPONSIVE BREAKPOINTS
   =========================================== */

/* Tablet (768px+) */
@media (min-width: 768px) {
    .md\:flex {
        display: flex;
    }

    .md\:hidden {
        display: none;
    }

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

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

    .md\:text-4xl {
        font-size: var(--font-size-4xl);
    }

    .md\:text-5xl {
        font-size: 3rem;
    }

    .md\:text-6xl {
        font-size: 3.75rem;
    }

    .md\:py-32 {
        padding-top: 128px;
        padding-bottom: 128px;
    }
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
    .lg\:flex {
        display: flex;
    }

    .lg\:hidden {
        display: none;
    }

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

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