/**
 * FUNDR Design System
 * Professional SaaS styling with consistent tokens
 */

/* ============================================================
 * DESIGN TOKENS
 * ============================================================ */

:root {
  /* Brand Colors */
  --brand-primary-50: #f0f9f3;
  --brand-primary-100: #dcf4e2;
  --brand-primary-200: #bbe8ca;
  --brand-primary-300: #8dd5a8;
  --brand-primary-400: #5abd80;
  --brand-primary-500: #10b981; /* Primary brand */
  --brand-primary-600: #059669;
  --brand-primary-700: #047857;
  --brand-primary-800: #065f46;
  --brand-primary-900: #064e3b;
  
  /* Neutral Colors - Light Theme */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  
  /* Status Colors */
  --success-50: #f0fdf4;
  --success-500: #22c55e;
  --success-600: #16a34a;
  --success-700: #15803d;
  
  --danger-50: #fef2f2;
  --danger-500: #ef4444;
  --danger-600: #dc2626;
  --danger-700: #b91c1c;
  
  --warning-50: #fffbeb;
  --warning-500: #f59e0b;
  --warning-600: #d97706;
  --warning-700: #b45309;
  
  --info-50: #eff6ff;
  --info-500: #3b82f6;
  --info-600: #2563eb;
  --info-700: #1d4ed8;
  
  /* Trading Specific Colors */
  --profit-color: var(--success-500);
  --loss-color: var(--danger-500);
  --long-color: #22c55e;
  --short-color: #ef4444;
  --breakeven-color: var(--gray-500);
  
  /* Semantic Color Mapping */
  --color-bg-primary: var(--gray-50);
  --color-bg-secondary: #ffffff;
  --color-bg-tertiary: var(--gray-100);
  --color-bg-overlay: rgba(17, 24, 39, 0.5);
  
  --color-text-primary: var(--gray-900);
  --color-text-secondary: var(--gray-600);
  --color-text-tertiary: var(--gray-500);
  --color-text-inverse: #ffffff;
  
  --color-border-primary: var(--gray-200);
  --color-border-secondary: var(--gray-300);
  --color-border-focus: var(--brand-primary-500);
  
  /* Interactive Colors */
  --color-interactive-primary: var(--brand-primary-500);
  --color-interactive-primary-hover: var(--brand-primary-600);
  --color-interactive-primary-active: var(--brand-primary-700);
  --color-interactive-primary-disabled: var(--gray-300);
  
  /* Typography Scale */
  --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', sans-serif;
  --font-family-mono: 'SF Mono', 'Monaco', 'Consolas', 'Liberation Mono', 'Courier New', monospace;
  
  /* Font Sizes */
  --text-xs: 0.75rem;     /* 12px */
  --text-sm: 0.875rem;    /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-lg: 1.125rem;    /* 18px */
  --text-xl: 1.25rem;     /* 20px */
  --text-2xl: 1.5rem;     /* 24px */
  --text-3xl: 1.875rem;   /* 30px */
  --text-4xl: 2.25rem;    /* 36px */
  --text-5xl: 3rem;       /* 48px */
  
  /* Font Weights */
  --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: 1.625;
  
  /* Spacing Scale (based on 4px grid) */
  --spacing-xs: 0.25rem;    /* 4px */
  --spacing-sm: 0.5rem;     /* 8px */
  --spacing-md: 0.75rem;    /* 12px */
  --spacing-lg: 1rem;       /* 16px */
  --spacing-xl: 1.25rem;    /* 20px */
  --spacing-2xl: 1.5rem;    /* 24px */
  --spacing-3xl: 2rem;      /* 32px */
  --spacing-4xl: 2.5rem;    /* 40px */
  --spacing-5xl: 3rem;      /* 48px */
  --spacing-6xl: 4rem;      /* 64px */
  
  /* Border Radius */
  --radius-sm: 0.25rem;     /* 4px */
  --radius-md: 0.375rem;    /* 6px */
  --radius-lg: 0.5rem;      /* 8px */
  --radius-xl: 0.75rem;     /* 12px */
  --radius-2xl: 1rem;       /* 16px */
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Z-Index Scale */
  --z-index-dropdown: 1000;
  --z-index-sticky: 1020;
  --z-index-fixed: 1030;
  --z-index-modal-backdrop: 1040;
  --z-index-modal: 1050;
  --z-index-popover: 1060;
  --z-index-tooltip: 1070;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Breakpoints (for reference, used in media queries) */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
}

/* ============================================================
 * DARK THEME
 * ============================================================ */

[data-theme="dark"] {
  /* Dark theme overrides */
  --color-bg-primary: #0b0e13;
  --color-bg-secondary: #161b22;
  --color-bg-tertiary: #21262d;
  --color-bg-overlay: rgba(0, 0, 0, 0.8);
  
  --color-text-primary: #f0f6fc;
  --color-text-secondary: #8b949e;
  --color-text-tertiary: #656d76;
  --color-text-inverse: var(--gray-900);
  
  --color-border-primary: #30363d;
  --color-border-secondary: #21262d;
  --color-border-focus: var(--brand-primary-400);
  
  /* Adjust component colors for dark mode */
  --brand-primary-50: rgba(16, 185, 129, 0.1);
  --brand-primary-100: rgba(16, 185, 129, 0.2);
  
  /* Status colors for dark mode */
  --success-100: rgba(34, 197, 94, 0.2);
  --danger-100: rgba(239, 68, 68, 0.2);
  --warning-100: rgba(245, 158, 11, 0.2);
  --info-100: rgba(59, 130, 246, 0.2);
  
  /* Shadows for dark mode */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.4), 0 1px 2px 0 rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.1);
}

/* Dark mode specific component overrides */
[data-theme="dark"] .card {
  background: linear-gradient(145deg, var(--color-bg-secondary), var(--color-bg-tertiary));
}

[data-theme="dark"] .btn-secondary {
  background-color: var(--color-bg-tertiary);
  border-color: var(--color-border-primary);
}

[data-theme="dark"] .btn-secondary:hover {
  background-color: var(--color-bg-primary);
  border-color: var(--color-border-secondary);
}

[data-theme="dark"] .form-input {
  background-color: var(--color-bg-tertiary);
  border-color: var(--color-border-primary);
}

[data-theme="dark"] .form-input:focus {
  background-color: var(--color-bg-secondary);
}

[data-theme="dark"] .topbar {
  background: rgba(22, 27, 34, 0.8);
  backdrop-filter: blur(10px);
  border-bottom-color: var(--color-border-primary);
}

[data-theme="dark"] .sidebar {
  background: linear-gradient(180deg, var(--color-bg-secondary), var(--color-bg-tertiary));
  border-right-color: var(--color-border-primary);
}

/* Dark mode hero gradients */
[data-theme="dark"] .hero-section {
  background: linear-gradient(135deg, #0b0e13 0%, #161b22 100%);
}

[data-theme="dark"] .hero-section::before {
  background: radial-gradient(ellipse at center top, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
}

/* ============================================================
 * BASE STYLES
 * ============================================================ */

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

html {
  font-size: 16px; /* Base font size for rem calculations */
  line-height: var(--line-height-normal);
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-family-sans);
  font-size: var(--text-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Focus Styles */
*:focus {
  outline: 2px solid var(--color-border-focus);
  outline-offset: 2px;
}

*:focus:not(:focus-visible) {
  outline: none;
}

*:focus-visible {
  outline: 2px solid var(--color-border-focus);
  outline-offset: 2px;
}

/* ============================================================
 * TYPOGRAPHY UTILITIES
 * ============================================================ */

/* Headings */
.text-5xl {
  font-size: var(--text-5xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  letter-spacing: -0.025em;
}

.text-4xl {
  font-size: var(--text-4xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  letter-spacing: -0.025em;
}

.text-3xl {
  font-size: var(--text-3xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  letter-spacing: -0.025em;
}

.text-2xl {
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
}

.text-xl {
  font-size: var(--text-xl);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-normal);
}

.text-lg {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-normal);
}

.text-base {
  font-size: var(--text-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
}

.text-sm {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
}

.text-xs {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
}

/* 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); }

/* Text Colors */
.text-primary { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-tertiary { color: var(--color-text-tertiary); }
.text-inverse { color: var(--color-text-inverse); }

.text-success { color: var(--success-600); }
.text-danger { color: var(--danger-600); }
.text-warning { color: var(--warning-600); }
.text-info { color: var(--info-600); }

.text-profit { color: var(--profit-color); }
.text-loss { color: var(--loss-color); }
.text-long { color: var(--long-color); }
.text-short { color: var(--short-color); }
.text-breakeven { color: var(--breakeven-color); }

/* Text Alignment */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

/* ============================================================
 * LAYOUT UTILITIES
 * ============================================================ */

/* Container */
.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-lg);
  padding-right: var(--spacing-lg);
}

@media (min-width: 640px) {
  .container { padding-left: var(--spacing-2xl); padding-right: var(--spacing-2xl); }
}

@media (min-width: 1024px) {
  .container { padding-left: var(--spacing-3xl); padding-right: var(--spacing-3xl); }
}

/* Flexbox Utilities */
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }

.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }
.items-stretch { align-items: stretch; }

.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }

.flex-1 { flex: 1 1 0%; }
.flex-auto { flex: 1 1 auto; }
.flex-none { flex: none; }

/* Grid Utilities */
.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.grid-cols-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

.col-span-1 { grid-column: span 1 / span 1; }
.col-span-2 { grid-column: span 2 / span 2; }
.col-span-3 { grid-column: span 3 / span 3; }
.col-span-4 { grid-column: span 4 / span 4; }
.col-span-6 { grid-column: span 6 / span 6; }
.col-span-full { grid-column: 1 / -1; }

.gap-xs { gap: var(--spacing-xs); }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }
.gap-2xl { gap: var(--spacing-2xl); }
.gap-3xl { gap: var(--spacing-3xl); }

/* Spacing Utilities */
.p-0 { padding: 0; }
.p-xs { padding: var(--spacing-xs); }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }
.p-2xl { padding: var(--spacing-2xl); }
.p-3xl { padding: var(--spacing-3xl); }

.m-0 { margin: 0; }
.m-xs { margin: var(--spacing-xs); }
.m-sm { margin: var(--spacing-sm); }
.m-md { margin: var(--spacing-md); }
.m-lg { margin: var(--spacing-lg); }
.m-xl { margin: var(--spacing-xl); }
.m-2xl { margin: var(--spacing-2xl); }
.m-3xl { margin: var(--spacing-3xl); }

/* Responsive utilities */
@media (min-width: 640px) {
  .sm\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sm\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 768px) {
  .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
  .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .lg\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}

/* ============================================================
 * COMPONENT BASE STYLES
 * ============================================================ */

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

a:hover {
  color: var(--color-interactive-primary-hover);
  text-decoration: underline;
}

/* Lists */
ul, ol {
  padding-left: var(--spacing-xl);
}

li {
  margin-bottom: var(--spacing-sm);
}

/* Horizontal Rule */
hr {
  border: none;
  height: 1px;
  background-color: var(--color-border-primary);
  margin: var(--spacing-3xl) 0;
}

/* Code */
code {
  font-family: var(--font-family-mono);
  font-size: 0.875em;
  background-color: var(--color-bg-tertiary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-tertiary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border-secondary);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-tertiary);
}

/* Selection */
::selection {
  background-color: var(--brand-primary-200);
  color: var(--color-text-primary);
}

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

/* Visibility */
.hidden { display: none; }
.visible { visibility: visible; }
.invisible { visibility: hidden; }

/* Position */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

/* Overflow */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.overflow-scroll { overflow: scroll; }

/* Pointer Events */
.pointer-events-none { pointer-events: none; }
.pointer-events-auto { pointer-events: auto; }

/* User Select */
.select-none { user-select: none; }
.select-text { user-select: text; }
.select-all { user-select: all; }

/* Cursor */
.cursor-pointer { cursor: pointer; }
.cursor-not-allowed { cursor: not-allowed; }

/* Z-Index */
.z-dropdown { z-index: var(--z-index-dropdown); }
.z-sticky { z-index: var(--z-index-sticky); }
.z-fixed { z-index: var(--z-index-fixed); }
.z-modal { z-index: var(--z-index-modal); }

/* Opacity */
.opacity-0 { opacity: 0; }
.opacity-25 { opacity: 0.25; }
.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }
.opacity-100 { opacity: 1; }

/* Transitions */
.transition-fast { transition: all var(--transition-fast); }
.transition-normal { transition: all var(--transition-normal); }
.transition-slow { transition: all var(--transition-slow); }