/**
 * FlexJob Design System
 * Version: 1.0.0
 * Created: 2025-01-15
 *
 * Centralized design tokens for consistent styling across the application
 */

:root {
    /* ============================================
       COLORS
       ============================================ */

    /* Primary Colors */
    --color-primary: #FF6600;
    --color-primary-dark: #E65C00;
    --color-primary-light: #FF8533;
    --color-primary-lighter: #FFB380;
    --color-primary-lightest: #FFF8F0;

    /* Secondary Colors */
    --color-secondary: #64748B;
    --color-secondary-dark: #475569;
    --color-secondary-light: #94A3B8;

    /* Semantic Colors */
    --color-success: #10B981;
    --color-success-dark: #059669;
    --color-success-light: #D1FAE5;

    --color-error: #EF4444;
    --color-error-dark: #DC2626;
    --color-error-light: #FEE2E2;

    --color-warning: #F59E0B;
    --color-warning-dark: #D97706;
    --color-warning-light: #FEF3C7;

    --color-info: #3B82F6;
    --color-info-dark: #2563EB;
    --color-info-light: #DBEAFE;

    /* Neutral Colors */
    --color-white: #FFFFFF;
    --color-black: #000000;

    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;

    /* Background Colors */
    --color-bg-base: #FFFFFF;
    --color-bg-secondary: #F9FAFB;
    --color-bg-tertiary: #F3F4F6;

    /* Text Colors */
    --color-text-primary: #111827;
    --color-text-secondary: #6B7280;
    --color-text-tertiary: #9CA3AF;
    --color-text-inverse: #FFFFFF;

    /* Border Colors */
    --color-border-light: #E5E7EB;
    --color-border-medium: #D1D5DB;
    --color-border-dark: #9CA3AF;

    /* ============================================
       SPACING
       ============================================ */

    --spacing-0: 0;
    --spacing-1: 0.25rem;    /* 4px */
    --spacing-2: 0.5rem;     /* 8px */
    --spacing-3: 0.75rem;    /* 12px */
    --spacing-4: 1rem;       /* 16px */
    --spacing-5: 1.25rem;    /* 20px */
    --spacing-6: 1.5rem;     /* 24px */
    --spacing-8: 2rem;       /* 32px */
    --spacing-10: 2.5rem;    /* 40px */
    --spacing-12: 3rem;      /* 48px */
    --spacing-16: 4rem;      /* 64px */
    --spacing-20: 5rem;      /* 80px */
    --spacing-24: 6rem;      /* 96px */

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

    /* Font Families */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;

    /* Font Sizes */
    --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 Weights */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;

    /* Line Heights */
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    --line-height-loose: 2;

    /* ============================================
       SHADOWS
       ============================================ */

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1), 0 10px 10px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.25);

    /* Colored Shadows */
    --shadow-primary: 0 4px 15px rgba(255, 102, 0, 0.3);
    --shadow-primary-lg: 0 8px 24px rgba(255, 102, 0, 0.4);
    --shadow-success: 0 4px 15px rgba(16, 185, 129, 0.3);
    --shadow-error: 0 4px 15px rgba(239, 68, 68, 0.3);

    /* ============================================
       BORDER RADIUS
       ============================================ */

    --radius-none: 0;
    --radius-sm: 0.25rem;     /* 4px */
    --radius-md: 0.5rem;      /* 8px */
    --radius-lg: 0.75rem;     /* 12px */
    --radius-xl: 1rem;        /* 16px */
    --radius-2xl: 1.5rem;     /* 24px */
    --radius-full: 9999px;

    /* ============================================
       TRANSITIONS
       ============================================ */

    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slower: 500ms cubic-bezier(0.4, 0, 0.2, 1);

    /* ============================================
       Z-INDEX
       ============================================ */

    --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;
    --z-index-notification: 1080;

    /* ============================================
       BREAKPOINTS (for reference in JS)
       ============================================ */

    --breakpoint-xs: 0;
    --breakpoint-sm: 576px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 992px;
    --breakpoint-xl: 1200px;
    --breakpoint-xxl: 1400px;
}

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

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-text-inverse);
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--radius-lg);
    border: none;
    font-weight: var(--font-weight-semibold);
    box-shadow: var(--shadow-primary);
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary-lg);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border-medium);
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--radius-lg);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-base);
    cursor: pointer;
}

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

.btn-success {
    background: var(--color-success);
    color: var(--color-white);
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--radius-lg);
    border: none;
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn-success:hover {
    background: var(--color-success-dark);
}

.btn-error {
    background: var(--color-error);
    color: var(--color-white);
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--radius-lg);
    border: none;
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn-error:hover {
    background: var(--color-error-dark);
}

/* Cards */
.card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-6);
    transition: all var(--transition-base);
}

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

.card-gradient-orange {
    background: linear-gradient(135deg, #ffffff 0%, var(--color-primary-lightest) 100%);
}

.card-gradient-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
}

.badge-primary {
    background: var(--color-primary-lightest);
    color: var(--color-primary-dark);
}

.badge-success {
    background: var(--color-success-light);
    color: var(--color-success-dark);
}

.badge-error {
    background: var(--color-error-light);
    color: var(--color-error-dark);
}

.badge-warning {
    background: var(--color-warning-light);
    color: var(--color-warning-dark);
}

/* Text Utilities */
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-success { color: var(--color-success); }
.text-error { color: var(--color-error); }
.text-warning { color: var(--color-warning); }

/* Background Utilities */
.bg-primary { background-color: var(--color-primary); }
.bg-secondary { background-color: var(--color-bg-secondary); }
.bg-white { background-color: var(--color-white); }

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

/* Shadow Utilities */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-primary { box-shadow: var(--shadow-primary); }

/* Border Radius Utilities */
.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

/* Spacing Utilities (examples) */
.p-0 { padding: var(--spacing-0); }
.p-1 { padding: var(--spacing-1); }
.p-2 { padding: var(--spacing-2); }
.p-3 { padding: var(--spacing-3); }
.p-4 { padding: var(--spacing-4); }
.p-6 { padding: var(--spacing-6); }

.m-0 { margin: var(--spacing-0); }
.m-1 { margin: var(--spacing-1); }
.m-2 { margin: var(--spacing-2); }
.m-3 { margin: var(--spacing-3); }
.m-4 { margin: var(--spacing-4); }
.m-6 { margin: var(--spacing-6); }

/* Transition Utilities */
.transition-fast { transition: all var(--transition-fast); }
.transition-base { transition: all var(--transition-base); }
.transition-slow { transition: all var(--transition-slow); }