/* CSS Variables for easy theme management */

:root {
    /* Light mode colors */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f9fafb;
    --color-bg-tertiary: #f3f4f6;
    
    --color-text-primary: #0B2B4C; /* Navy primary text */
    --color-text-secondary: #334155; /* Darker secondary text */
    --color-text-muted: #0F172A; /* For longer paragraphs */
    --color-text-inverse: #ffffff;
    
    --color-border: #E5E7EB;
    --color-border-hover: #d1d5db;
    
    /* Brand colors */
    --color-primary: #0B2B4C; /* Navy */
    --color-primary-hover: #071D33;
    --color-primary-light: #E8F0FF;
    
    /* Accent colors */
    --color-accent: #22C55E; /* Green for indicators, badges, hover */
    --color-accent-hover: #16A34A;
    
    /* CTA Gradient colors */
    --color-cta-start: #DC2626; /* Dark red gradient start (red-600) */
    --color-cta-end: #B91C1C; /* Dark red gradient end (red-700) */
    --color-cta-hover-start: #B91C1C; /* Darker red on hover (red-700) */
    --color-cta-hover-end: #991B1B; /* Even darker red (red-800) */
    
    /* Functional colors */
    --color-success: #22C55E;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #3b82f6;
    
    /* 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), 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);
    
    /* Transitions */
    --transition-fast: 150ms;
    --transition-base: 200ms;
    --transition-slow: 300ms;
    
    /* Border radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-full: 9999px;
}

/* Dark mode overrides */
.dark {
    --color-bg-primary: #0B1320; /* Deep dark navy */
    --color-bg-secondary: #111827; /* Surface color */
    --color-bg-tertiary: #1F2937;
    
    --color-text-primary: #F8FAFC;
    --color-text-secondary: #E5E7EB;
    --color-text-muted: #D1D5DB;
    --color-text-inverse: #0B2B4C;
    
    --color-border: #1F2937;
    --color-border-hover: #374151;
    
    --color-primary-light: #1E3A5F;
    
    /* Adjusted shadows for dark mode */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
}

/* Utility classes using CSS variables */
.bg-primary {
    background-color: var(--color-bg-primary);
}

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

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

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

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

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

.border-default {
    border-color: var(--color-border);
}

.border-hover:hover {
    border-color: var(--color-border-hover);
}

/* Card component using variables */
.card-var {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base) ease;
}

.card-var:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--color-border-hover);
}

/* Button component using variables */
.btn-var {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: all var(--transition-base) ease;
}

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

.btn-var-primary:hover {
    background-color: var(--color-primary-hover);
    transform: scale(1.05);
}

/* Form input using variables */
.input-var {
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast) ease;
}

.input-var:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(220, 20, 60, 0.1);
}

/* Link styles using variables */
.link-var {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast) ease;
}

.link-var:hover {
    color: var(--color-primary-hover);
    text-decoration: underline;
}

/* Animation using variables */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fadeIn {
    animation: fadeIn var(--transition-slow) ease-out;
}