/* ===========================================
   MAIN STYLESHEET - Portfolio Website
   =========================================== */

/* Import all CSS modules */
@import url('base.css');
@import url('layout.css');
@import url('components.css');
@import url('pages.css');
@import url('responsive.css');

/* ===========================================
   ADDITIONAL UTILITIES & OVERRIDES
   =========================================== */

/* Loading states */
.loading {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--primary-color);
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Smooth scrolling for the entire page */
html {
    scroll-behavior: smooth;
}

/* Better focus management */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-color);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 1001;
}

.skip-link:focus {
    top: 6px;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* Selection colors */
::selection {
    background: var(--primary-color);
    color: white;
}

::-moz-selection {
    background: var(--primary-color);
    color: white;
}

/* Improved text rendering */
body {
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Better image handling */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Form improvements */
input[type="email"]:invalid:not(:focus):not(:placeholder-shown) {
    border-color: var(--error-color);
}

input[type="email"]:valid:not(:focus):not(:placeholder-shown) {
    border-color: var(--success-color);
}

/* Animation performance */
.skill-card,
.project-card,
.stat-item {
    will-change: transform;
}

/* Better button states */
.btn:active {
    transform: translateY(0);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn:disabled:hover {
    transform: none;
    box-shadow: none;
}

/* Enhanced hover effects */
.project-card:hover .tech-tag {
    background: var(--accent-color);
    transform: scale(1.05);
}

.contact-method:hover .contact-method-icon {
    transform: scale(1.1);
}

/* Better spacing for long content */
section {
    padding: var(--spacing-3xl) 0;
}

section:first-of-type {
    padding-top: var(--spacing-3xl);
}

section:last-of-type {
    padding-bottom: var(--spacing-3xl);
}

/* Improved grid layouts */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Flex utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--spacing-xs); }
.gap-2 { gap: var(--spacing-sm); }
.gap-3 { gap: var(--spacing-md); }
.gap-4 { gap: var(--spacing-lg); }

/* Spacing utilities */
.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }
.p-5 { padding: var(--spacing-xl); }
.p-6 { padding: var(--spacing-2xl); }

.m-0 { margin: 0; }
.m-1 { margin: var(--spacing-xs); }
.m-2 { margin: var(--spacing-sm); }
.m-3 { margin: var(--spacing-md); }
.m-4 { margin: var(--spacing-lg); }
.m-5 { margin: var(--spacing-xl); }
.m-6 { margin: var(--spacing-2xl); }

/* Text utilities */
.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; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }
.text-4xl { font-size: 2.25rem; }

.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; }
.font-extrabold { font-weight: 800; }

/* Color utilities */
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success-color); }
.text-error { color: var(--error-color); }
.text-warning { color: var(--warning-color); }

.bg-primary { background-color: var(--primary-color); }
.bg-secondary { background-color: var(--secondary-color); }
.bg-success { background-color: var(--success-color); }
.bg-error { background-color: var(--error-color); }
.bg-warning { background-color: var(--warning-color); }

/* Border utilities */
.border { border: 1px solid var(--border-color); }
.border-primary { border-color: var(--primary-color); }
.border-success { border-color: var(--success-color); }
.border-error { border-color: var(--error-color); }

.rounded { border-radius: var(--radius-md); }
.rounded-sm { border-radius: var(--radius-sm); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }

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

/* Transition utilities */
.transition { transition: all 0.3s ease; }
.transition-fast { transition: all 0.15s ease; }
.transition-slow { transition: all 0.5s ease; }

/* Visibility utilities */
.hidden { display: none; }
.visible { display: block; }
.invisible { visibility: hidden; }

/* Position utilities */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

/* Overflow utilities */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.overflow-scroll { overflow: scroll; }

/* Z-index utilities */
.z-10 { z-index: 10; }
.z-20 { z-index: 20; }
.z-30 { z-index: 30; }
.z-40 { z-index: 40; }
.z-50 { z-index: 50; }

/* Custom animations */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.animate-slide-up { animation: slideInUp 0.6s ease-out; }
.animate-slide-left { animation: slideInLeft 0.6s ease-out; }
.animate-slide-right { animation: slideInRight 0.6s ease-out; }
.animate-zoom-in { animation: zoomIn 0.6s ease-out; }

/* Performance optimizations */
.skill-card,
.project-card,
.stat-item,
.contact-method {
    contain: layout style paint;
}

/* Better error handling */
.error-boundary {
    padding: var(--spacing-xl);
    background: var(--surface-color);
    border: 1px solid var(--error-color);
    border-radius: var(--radius-md);
    color: var(--error-color);
    text-align: center;
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
    .animate-slide-up,
    .animate-slide-left,
    .animate-slide-right,
    .animate-zoom-in {
        animation: none;
    }
}

/* Focus management for modals/overlays */
.modal-open {
    overflow: hidden;
}

/* Better print styles */
@media print {
    .no-print {
        display: none !important;
    }
    
    .print-break {
        page-break-before: always;
    }
    
    .print-avoid-break {
        page-break-inside: avoid;
    }
}