/* ===== COMPONENT STYLES ===== */

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.3);
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-secondary:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-full {
    width: 100%;
}

/* Cards */
.card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--color-gray-200);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.card-header {
    padding: var(--spacing-lg);
    background: var(--color-gray-50);
    border-bottom: 1px solid var(--color-gray-200);
}

.card-body {
    padding: var(--spacing-lg);
}

.card-footer {
    padding: var(--spacing-lg);
    background: var(--color-gray-50);
    border-top: 1px solid var(--color-gray-200);
}

/* Project Cards */
.project-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.project-image {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

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

.project-links {
    display: flex;
    gap: var(--spacing-md);
}

.project-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--color-white);
    color: var(--text-primary);
    border-radius: var(--radius-full);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.project-link:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: scale(1.1);
}

.project-content {
    padding: var(--spacing-xl);
}

.project-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.project-category {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-primary);
    color: var(--color-white);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: var(--radius-full);
}

.project-date {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    font-weight: var(--font-weight-medium);
}

.project-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.project-technologies {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

/* Tags */
.tech-tag,
.skill-tag {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-gray-100);
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.tech-tag:hover,
.skill-tag:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: scale(1.05);
}

/* Contact Components */
/* ===================================
   CONTACT COMPONENTS
   =================================== */

.contact-item {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--text-secondary);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.contact-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(29, 78, 216, 0.1), rgba(147, 51, 234, 0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 50%;
}

.contact-item:hover::before {
    opacity: 1;
}

.contact-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: 0 20px 40px rgba(29, 78, 216, 0.15);
}

.contact-item svg {
    width: 24px;
    height: 24px;
    z-index: 1;
    position: relative;
}

/* ===================================
   PAGE HEADER
   =================================== */

.page-header {
    background: linear-gradient(135deg, rgba(29, 78, 216, 0.05), rgba(147, 51, 234, 0.05));
    padding: 120px 0 80px;
    margin-top: 80px;
    border-bottom: 1px solid var(--border-color);
}

.page-header-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.page-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-primary), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto;
}

/* ===================================
   PROJECT SECTIONS
   =================================== */

.project-filters {
    padding: 2rem 0;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
    position: sticky;
    top: 80px;
    z-index: 10;
    backdrop-filter: blur(20px);
}

.projects-section {
    padding: 4rem 0;
    min-height: 60vh;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.project-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    transform: translateY(20px);
    position: relative;
}

.project-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.project-card-header {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.project-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, var(--bg-secondary), var(--glass-bg));
    transition: all 0.3s ease;
}

.project-icon-container {
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.project-card:hover .project-icon-container {
    transform: scale(1.1);
    color: var(--primary-color);
}

.project-status {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.25rem 0.75rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.project-status.completed {
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.project-status.in-progress {
    background: rgba(251, 191, 36, 0.2);
    color: #fbbf24;
    border: 1px solid rgba(251, 191, 36, 0.3);
}

.project-status.draft {
    background: rgba(156, 163, 175, 0.2);
    color: #9ca3af;
    border: 1px solid rgba(156, 163, 175, 0.3);
}

.project-card-content {
    padding: 1.5rem;
}

.project-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.project-technologies {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.project-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.project-tag {
    background: rgba(29, 78, 216, 0.1);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid rgba(29, 78, 216, 0.2);
}

.tech-more {
    background: var(--glass-bg);
    color: var(--text-secondary);
    padding: 0.25rem 0.75rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

.project-card-footer {
    padding: 1.5rem;
    padding-top: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.project-links {
    display: flex;
    gap: 0.75rem;
}

.project-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
}

.project-link:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* ===================================
   LOADING AND ERROR STATES
   =================================== */

.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 4rem 0;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.no-results {
    text-align: center;
    padding: 4rem 2rem;
}

.no-results-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.no-results-content p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.error-message {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    margin: 2rem 0;
}

.error-message h3 {
    color: #ef4444;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.error-message p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* ===================================
   MODAL STYLES
   =================================== */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    transition: transform 0.3s ease;
}

.modal.active .modal-content {
    transform: translate(-50%, -50%) scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    background: var(--bg-primary);
    z-index: 10;
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: var(--glass-bg);
    color: var(--text-primary);
}

.modal-body {
    padding: 2rem;
}

.modal-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 2rem;
    padding: 2rem 0;
}

.modal-icon-container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1rem;
    background: var(--glass-bg);
    border-radius: 1rem;
    border: 1px solid var(--border-color);
}

.modal-content-wrapper > div {
    margin-bottom: 2rem;
}

.modal-content-wrapper h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.modal-description p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.modal-features ul,
.modal-challenges ul {
    list-style: none;
    padding: 0;
}

.modal-features li,
.modal-challenges li {
    color: var(--text-secondary);
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.modal-features li::before,
.modal-challenges li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.tech-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.modal-links {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.modal-links .btn-primary,
.modal-links .btn-secondary {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

@media (max-width: 768px) {
    .page-header {
        padding: 100px 0 60px;
        margin-top: 70px;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .project-filters {
        top: 70px;
    }
    
    .modal-content {
        width: 95%;
        max-height: 95vh;
    }
    
    .modal-header,
    .modal-body {
        padding: 1.5rem;
    }
    
    .modal-links {
        flex-direction: column;
    }
    
    .modal-links .btn-primary,
    .modal-links .btn-secondary {
        justify-content: center;
    }
}

/* Body class when modal is open */
body.modal-open {
    overflow: hidden;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    text-decoration: none;
    color: var(--text-primary);
}

.contact-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    background: linear-gradient(180deg, var(--color-gray-50), var(--color-white));
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.contact-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--text-secondary);
}

.contact-item:hover .contact-icon {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, rgba(0,122,255,0.08), rgba(88,86,214,0.06));
}

/* Filters */
.filter-tabs {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

.filter-tab {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-gray-100);
    color: var(--text-secondary);
    border: none;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-tab:hover,
.filter-tab.active {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

/* Loading States */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-gray-200);
    border-top: 3px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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