/* ===================================
   PPMS Design System - CSS Variables
   ================================== */

:root {
    /* === Color Gradients === */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --warning-gradient: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --danger-gradient: linear-gradient(135deg, #ff6b6b 0%, #ee5a52 100%);
    --dark-gradient: linear-gradient(135deg, #1f2937 0%, #374151 100%);
    --light-bg: linear-gradient(135deg, #fdfbfb 0%, #ebedee 100%);
    
    /* === Solid Colors === */
    --primary-color: #667eea;
    --secondary-color: #f093fb;
    --success-color: #4facfe;
    --warning-color: #43e97b;
    --danger-color: #ff6b6b;
    --dark-color: #1f2937;
    --light-color: #fdfbfb;
    
    /* === Text Colors === */
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-muted: #6b7280;
    --text-light: #9ca3af;
    --text-white: #ffffff;
    
    /* === Background Colors === */
    --bg-white: #ffffff;
    --bg-light: #f8fafc;
    --bg-gray-50: #f9fafb;
    --bg-gray-100: #f3f4f6;
    --bg-gray-200: #e5e7eb;
    
    /* === Border Colors === */
    --border-light: #e2e8f0;
    --border-gray: #d1d5db;
    --border-primary: rgba(102, 126, 234, 0.2);
    --border-success: rgba(79, 172, 254, 0.2);
    --border-warning: rgba(67, 233, 123, 0.2);
    --border-danger: rgba(255, 107, 107, 0.2);
    
    /* === Shadows === */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
    --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.1);
    --shadow-card-hover: 0 20px 60px rgba(0, 0, 0, 0.15);
    
    /* === Border Radius === */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    --radius-full: 50%;
    --border-radius: 16px; /* Main border radius */
    
    /* === Spacing === */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 2.5rem;
    --spacing-3xl: 3rem;
    --spacing-4xl: 4rem;
    
    /* === Enhanced Typography System === */
    /* Font Families - More Engaging */
    --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-family-secondary: 'Poppins', 'Inter', sans-serif;
    --font-family-display: 'Poppins', 'Inter', sans-serif; /* For headings */
    --font-family-body: 'Inter', 'Segoe UI', sans-serif; /* For body text */
    --font-family-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

    /* Font Sizes - More Dynamic Scale */
    --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-size-6xl: 3.75rem;    /* 60px */
    --font-size-7xl: 4.5rem;     /* 72px */

    /* Font Weights - More Variety */
    --font-weight-thin: 100;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --font-weight-black: 900;

    /* Line Heights - Better Readability */
    --line-height-none: 1;
    --line-height-tight: 1.25;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    --line-height-loose: 2;

    /* Letter Spacing - Modern Feel */
    --letter-spacing-tighter: -0.05em;
    --letter-spacing-tight: -0.025em;
    --letter-spacing-normal: 0em;
    --letter-spacing-wide: 0.025em;
    --letter-spacing-wider: 0.05em;
    --letter-spacing-widest: 0.1em;
    
    /* === Transitions === */
    --transition-fast: all 0.15s ease;
    --transition-normal: all 0.3s ease;
    --transition-slow: all 0.5s ease;
    --transition-bounce: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); /* Main transition */
    
    /* === Z-Index === */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    
    /* === Breakpoints (for reference) === */
    --breakpoint-sm: 576px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 992px;
    --breakpoint-xl: 1200px;
    --breakpoint-2xl: 1400px;
    
    /* === Component Specific === */
    --navbar-height: 70px;
    --sidebar-width: 280px;
    --container-max-width: 1200px;
    
    /* === Form Elements === */
    --input-height: 44px;
    --input-padding: 0.75rem 1rem;
    --input-border-width: 2px;
    --input-focus-ring: 0 0 0 3px rgba(102, 126, 234, 0.1);
    
    /* === Button Sizes === */
    --btn-padding-sm: 0.5rem 1rem;
    --btn-padding-md: 0.75rem 1.5rem;
    --btn-padding-lg: 1rem 2rem;
    
    /* === Animation Durations === */
    --duration-fast: 150ms;
    --duration-normal: 300ms;
    --duration-slow: 500ms;
    
    /* === Opacity Levels === */
    --opacity-disabled: 0.5;
    --opacity-muted: 0.7;
    --opacity-hover: 0.9;
    
    /* === Badge/Status Colors === */
    --status-pending: var(--warning-gradient);
    --status-success: var(--success-gradient);
    --status-error: var(--danger-gradient);
    --status-info: var(--primary-gradient);
}

/* === Dark Mode Variables (disabled - using light theme only) === */
/* Dark mode support disabled to maintain consistent light theme across all devices */

/* === Print Styles === */
@media print {
    :root {
        --shadow-card: none;
        --shadow-card-hover: none;
        --transition: none;
    }
}