/* ============================================
   TIMBER ERP - PROFESSIONAL DESIGN SYSTEM
   Complete Theme & Color Management
   ============================================ */

:root {
  /* PRIMARY COLORS - Timber Brand (Teal) */
  --primary: #0d9488;
  --primary-hover: #0f766e;
  --primary-light: #ccfbf1;
  --primary-dark: #134e4a;
  --primary-rgb: 13, 148, 136;
  
  /* SECONDARY COLORS */
  --secondary: #0ea5e9;
  --secondary-hover: #0284c7;
  --secondary-light: #cffafe;
  
  /* STATUS COLORS */
  --success: #10b981;
  --success-light: #d1fae5;
  --success-dark: #059669;
  
  --danger: #ef4444;
  --danger-light: #fee2e2;
  --danger-dark: #dc2626;
  
  --warning: #f59e0b;
  --warning-light: #fef3c7;
  --warning-dark: #d97706;
  
  --info: #3b82f6;
  --info-light: #dbeafe;
  --info-dark: #1d4ed8;
  
  /* LIGHT MODE */
  --light-bg: #ffffff;
  --light-bg-secondary: #f8fafc;
  --light-bg-tertiary: #f1f5f9;
  --light-text: #0f172a;
  --light-text-secondary: #475569;
  --light-text-tertiary: #94a3b8;
  --light-border: #e2e8f0;
  --light-shadow: rgba(0, 0, 0, 0.08);
  
  /* DARK MODE */
  --dark-bg: #0f172a;
  --dark-bg-secondary: #1e293b;
  --dark-bg-tertiary: #334155;
  --dark-text: #f1f5f9;
  --dark-text-secondary: #cbd5e1;
  --dark-text-tertiary: #94a3b8;
  --dark-border: #334155;
  --dark-shadow: rgba(0, 0, 0, 0.4);
  
  /* LAYOUT */
  --header-height: 70px;
  --sidebar-width: 280px;
  --sidebar-width-collapsed: 80px;
  --header-padding-y: 1rem;
  --header-padding-x: 2rem;
  
  /* SPACING */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* RADIUS */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* SHADOWS */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
  
  /* TRANSITIONS */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
}

/* ============================================
   LIGHT MODE (DEFAULT)
   ============================================ */

:root {
  --bg: var(--light-bg);
  --bg-secondary: var(--light-bg-secondary);
  --bg-tertiary: var(--light-bg-tertiary);
  --text: var(--light-text);
  --text-secondary: var(--light-text-secondary);
  --text-tertiary: var(--light-text-tertiary);
  --border: var(--light-border);
  --shadow: var(--light-shadow);
  --header-bg: var(--light-bg);
  --sidebar-bg: var(--light-bg-secondary);
}

/* ============================================
   DARK MODE
   ============================================ */

[data-theme="dark"],
html.dark-mode {
  --bg: var(--dark-bg);
  --bg-secondary: var(--dark-bg-secondary);
  --bg-tertiary: var(--dark-bg-tertiary);
  --text: var(--dark-text);
  --text-secondary: var(--dark-text-secondary);
  --text-tertiary: var(--dark-text-tertiary);
  --border: var(--dark-border);
  --shadow: var(--dark-shadow);
  --header-bg: var(--dark-bg-secondary);
  --sidebar-bg: var(--dark-bg);
}

/* ============================================
   ALTERNATIVE COLOR THEMES
   ============================================ */

[data-color-theme="blue"] {
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-light: #dbeafe;
  --primary-dark: #1e40af;
}

[data-color-theme="purple"] {
  --primary: #a855f7;
  --primary-hover: #9333ea;
  --primary-light: #f3e8ff;
  --primary-dark: #6b21a8;
}

[data-color-theme="orange"] {
  --primary: #f97316;
  --primary-hover: #ea580c;
  --primary-light: #fed7aa;
  --primary-dark: #92400e;
}

[data-color-theme="indigo"] {
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-light: #e0e7ff;
  --primary-dark: #3730a3;
}

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

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  font-size: 14px;
  line-height: 1.6;
  transition: background-color var(--transition-base), color var(--transition-base);
}

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

h1, h2, h3, h4, h5, h6 {
  color: var(--text);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

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

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

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

/* ============================================
   TEXT UTILITIES
   ============================================ */

.text-primary { color: var(--text); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.text-white { color: #ffffff; }

.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }

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

/* ============================================
   BACKGROUND UTILITIES
   ============================================ */

.bg-primary { background-color: var(--bg); }
.bg-secondary { background-color: var(--bg-secondary); }
.bg-tertiary { background-color: var(--bg-tertiary); }