/* Critical CSS - Above the fold styles */
/* Load first for better performance */

/* CSS Variables */
:root {
    --primary-color: #2563eb;
    --primary-gradient: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
}

/* Reset and base styles */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    margin: 0;
    padding: 0;
}

/* Header styles */
.navbar {
    background: var(--bg-primary) !important;
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid #e2e8f0;
    position: sticky;
    top: 0;
    z-index: 1030;
}

.navbar-brand {
    font-weight: 700;
    color: var(--text-primary) !important;
}

.nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    transition: var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary-color) !important;
}

/* Hero section */
.bg-gradient-primary {
    background: var(--primary-gradient);
    min-height: 60vh;
    display: flex;
    align-items: center;
}

/* Buttons */
.btn {
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: var(--transition-normal);
    border: none;
    padding: 0.75rem 1.5rem;
}

.btn-primary {
    background: var(--primary-gradient);
    border-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Cards */
.card {
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    background: var(--bg-primary);
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

/* Form controls */
.form-control, .form-select {
    border: 2px solid #e2e8f0;
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    transition: var(--transition-normal);
    background: var(--bg-primary);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Loading states */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

/* Responsive optimizations */
@media (max-width: 768px) {
    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.875rem;
    }
    
    .card {
        margin-bottom: 1rem;
    }
}

/* Performance optimizations */
img {
    max-width: 100%;
    height: auto;
    loading: lazy;
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}