/* ===== PROJECTS PAGE SPECIFIC STYLES ===== */

/* ===== CSS VARIABLES FOR CONSISTENCY ===== */
:root {
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 20px;
}

/* Projects Main Layout */
.projects-main {
    min-height: 100vh;
    padding-top: 0;
    background: var(--bg-primary);
    contain: layout style paint; /* Performance optimization */
}

/* Hide mobile menu button on projects page */
.mobile-menu-btn {
    display: none !important;
}

/* Updated Navigation Layout - 3 Column Grid */
.nav-container {
    position: relative;
    z-index: 1002;
    width: 100%;
    padding: 0 clamp(1rem, 3vw, 2rem);
    height: 100%;
    display: grid;
    grid-template-columns: 1fr auto 1fr; /* Left, Center, Right */
    align-items: center;
    gap: 1rem;
}

.nav-left {
    justify-self: start;
}

.nav-center {
    justify-self: center;
    /* Empty space for future use */
}

.nav-right {
    justify-self: end;
}

/* Back Button Styling - Optimized */
.back-btn {
    cursor: pointer;
    transition: transform var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
    will-change: transform; /* Performance hint */
}

.back-btn:hover {
    transform: scale(1.05);
}

.back-btn i {
    font-size: clamp(1.2rem, 3vw, 1.4rem);
    transition: transform var(--transition-smooth);
}

.back-btn:hover i {
    transform: scale(1.1);
}

/* Sort Dropdown - Now in right position */
.sort-dropdown {
    position: relative;
}

.sort-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius-md);
    padding: clamp(0.4rem, 1.5vw, 0.5rem) clamp(0.8rem, 2vw, 1rem);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: var(--fs-small);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-height: 44px;
    white-space: nowrap;
    will-change: transform;
}

.sort-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

.sort-btn i:first-child {
    font-size: 0.9rem;
}

.sort-btn i:last-child {
    font-size: 0.8rem;
    transition: transform var(--transition-fast);
}

.sort-dropdown:hover .sort-btn i:last-child {
    transform: rotate(180deg);
}

.sort-menu {
    position: absolute;
    top: calc(100% + 10px);
    right: 0; /* Changed from left: 0 to right: 0 */
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem 0;
    min-width: 160px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px) scale(0.95);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(0, 0, 0, 0.08);
    z-index: 1001;
    will-change: transform, opacity;
}

.sort-dropdown:hover .sort-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.sort-option {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    transition: all var(--transition-fast);
    font-size: var(--fs-small);
    text-decoration: none;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    cursor: pointer;
}

.sort-option:hover,
.sort-option.active {
    background: rgba(225, 50, 54, 0.1);
    color: var(--primary-color);
    transform: translateX(3px);
}

/* ===== PROJECTS HEADER - Hero Style ===== */

/* Projects Header - Performance Optimized */
.projects-header {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    contain: layout style paint;
}

/* Background Image - Optimized */
.projects-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    will-change: transform;
}

.projects-hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(0%) blur(10px);
    transition: transform 0.6s ease-out;
    will-change: transform;
    backface-visibility: hidden; /* Performance optimization */
}

/* Header Content - Optimized */
.header-content {
    position: relative;
    z-index: 2;
    max-width: min(1200px, 95vw);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    text-align: center;
    color: white;
    animation: fadeInScale 1s ease-out 0.3s both;
    contain: layout style;
}

/* Projects Title */
.header-content h1 {
    font-family: var(--font-heading);
    font-size: var(--fs-hero);
    font-weight: 700;
    color: rgb(255, 255, 255);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

/* Projects Description */
.header-content p {
    font-size: var(--fs-body);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
    line-height: 1.7;
    max-width: min(800px, 90vw);
    margin-left: auto;
    margin-right: auto;
}

/* Projects Stats - Optimized */
.projects-stats {
    display: flex;
    gap: clamp(2rem, 5vw, 4rem);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: clamp(1rem, 3vw, 1.5rem) clamp(1.5rem, 4vw, 2rem);
    border-radius: var(--border-radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: clamp(120px, 20vw, 160px);
    will-change: transform;
    contain: layout style;
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.stat-number {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 3.5rem);
    font-weight: 700;
    color: white;
    line-height: 1;
    transition: all 0.3s ease;
}

.stat-label {
    font-size: var(--fs-small);
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
    text-align: center;
}

/* Container adjustment for hero */
.projects-header .container {
    position: relative;
    z-index: 2;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Projects Section - Optimized */
.projects-section {
    padding: clamp(2rem, 5vw, 3rem) 0;
    background: var(--bg-primary);
    contain: layout style;
}

/* Loading State - Optimized */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 0;
    gap: 1rem;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(225, 50, 54, 0.2);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    will-change: transform;
}

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

.loading-state p {
    color: var(--text-secondary);
    font-size: var(--fs-body);
}

/* Projects Grid - Performance Optimized */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(300px, 90vw), 1fr));
    gap: clamp(1rem, 3vw, 2rem);
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
    contain: layout;
}

.projects-grid.loaded {
    opacity: 1;
    transform: translateY(0);
}

/* Project Card - Optimized */
.project-card {
    background: white;
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
    opacity: 1;
    transform: translateY(0) scale(1);
    position: relative;
    animation: cardEntrance 0.6s ease-out both;
    contain: layout style paint;
    will-change: transform;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.6s;
    z-index: 1;
    will-change: transform;
}

.project-card:hover::before {
    left: 100%;
}

.project-card:hover {
    transform: translateY(-15px) scale(1.05);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
    border-color: rgba(0, 0, 0, 0.1);
}

/* Project Image - Optimized */
.project-image {
    position: relative;
    height: clamp(180px, 25vw, 200px);
    overflow: hidden;
    contain: layout;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-smooth);
    will-change: transform;
    backface-visibility: hidden;
}

/* Lazy loading placeholder */
.lazy-image {
    background: #f0f0f0;
    transition: opacity 0.3s ease;
}

.lazy-image[data-src] {
    opacity: 0.7;
}

.project-card:hover .project-image img {
    transform: scale(1.15);
    filter: brightness(1.1);
}

/* Project Status Badge - Optimized */
.project-status {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius-xl);
    font-size: clamp(0.75rem, 2vw, 0.85rem);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    z-index: 3;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    contain: layout style;
}

.project-status.working {
    color: var(--primary-color);
    border: 1px solid rgba(225, 50, 54, 0.2);
}

.project-status.completed {
    color: rgba(255, 255, 255, 0.6);
    background: rgba(107, 114, 128, 0.9);
    border: 1px solid rgba(107, 114, 128, 0.3);
}

.project-status i {
    font-size: 0.9em;
}

/* Project Overlay - Optimized */
.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 2;
    will-change: opacity;
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-overlay .btn {
    transform: translateY(20px);
    transition: transform 0.3s ease 0.1s;
    will-change: transform;
}

.project-card:hover .project-overlay .btn {
    transform: translateY(0);
}

/* Project Content - Optimized */
.project-content {
    padding: clamp(1.2rem, 3vw, 1.5rem);
    position: relative;
    z-index: 2;
    contain: layout style;
}

.project-card:hover .project-content {
    transform: translateY(-5px);
}

.project-content h3 {
    font-family: var(--font-heading);
    font-size: var(--fs-subheading);
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    transition: all var(--transition-smooth);
    line-height: 1.3;
}

.project-card:hover .project-content h3 {
    transform: translateY(-3px);
    color: var(--primary-color);
}

.project-content p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
    transition: color var(--transition-smooth);
    font-size: var(--fs-small);
}

.project-card:hover .project-content p {
    color: var(--text-primary);
}

/* Project Meta - Optimized */
.project-meta {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 1rem;
    flex-wrap: wrap;
}

.project-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    flex: 1;
}

.project-date {
    font-size: clamp(0.75rem, 2vw, 0.85rem);
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
}

/* No Results State */
.no-results {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 300px;
    padding: 2rem;
}

.no-results-content {
    text-align: center;
    opacity: 0;
    transform: translateY(20px);
    animation: slideInUp 0.6s ease-out 0.2s forwards;
}

.no-results-content i {
    font-size: 3rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    opacity: 0.5;
}

.no-results-content h3 {
    font-family: var(--font-heading);
    font-size: var(--fs-subheading);
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.no-results-content p {
    color: var(--text-secondary);
    font-size: var(--fs-small);
}

/* Filter Animation - Optimized */
.project-card.filter-out {
    opacity: 0;
    transform: scale(0.8) translateY(20px);
    pointer-events: none;
    will-change: transform, opacity;
}

.project-card.filter-in {
    opacity: 1;
    transform: scale(1) translateY(0);
    pointer-events: auto;
    will-change: auto;
}

/* Animation delays for stats (staggered entrance) - Optimized */
.stat-item:nth-child(1) { animation-delay: 0.5s; }
.stat-item:nth-child(2) { animation-delay: 0.7s; }
.stat-item:nth-child(3) { animation-delay: 0.9s; }

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

@keyframes cardEntrance {
    0% {
        opacity: 0;
        transform: translateY(30px) scale(0.9);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: translateY(40px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Responsive Design - Mobile First Approach */
@media (max-width: 767px) {
    .mobile-menu-btn {
        display: none !important;
    }
    
    /* Navigation adjustments */
    .nav-container {
        gap: 0.5rem;
        padding: 0 1rem;
    }
    
    .sort-btn span {
        display: none;
    }
    
    .sort-btn {
        min-width: 44px;
        justify-content: center;
        padding: clamp(0.4rem, 1.5vw, 0.5rem);
    }
    
    /* Mobile stats layout */
    .projects-stats {
        gap: 1.5rem;
        flex-direction: row;
        justify-content: space-around;
    }
    
    .stat-item {
        min-width: clamp(100px, 25vw, 140px);
        padding: clamp(0.8rem, 2.5vw, 1rem) clamp(1rem, 3vw, 1.2rem);
    }
    
    .stat-number {
        font-size: clamp(2rem, 5vw, 2.5rem);
    }
    
    .project-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .project-date {
        align-self: flex-end;
    }
    
    .back-btn span {
        display: block;
    }
    
    /* Sort menu alignment */
    .sort-menu {
        right: 0;
        left: auto;
        min-width: 140px;
    }
}

@media (max-width: 479px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-stats {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }
    
    .stat-item {
        width: 100%;
        max-width: 200px;
    }
    
    .back-btn span {
        font-size: clamp(1rem, 2.5vw, 1.2rem);
    }
    
    .nav-container {
        padding: 0 0.5rem;
    }
}

/* Performance optimizations for slower devices */
@media (max-width: 480px) and (max-height: 800px) {
    .project-card {
        will-change: auto;
    }
    
    .project-card:hover {
        transform: translateY(-8px) scale(1.02);
    }
    
    .stat-item:hover {
        transform: translateY(-3px) scale(1.02);
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .project-status.working,
    .project-status.completed {
        background: rgba(0, 0, 0, 0.8);
    }
    
    .lazy-image {
        background: #2a2a2a;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .project-card {
        will-change: auto;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .sort-btn {
        border: 2px solid;
    }
    
    .project-card {
        border: 2px solid var(--text-primary);
    }
}