/**
 * Component Styles
 * Reusable UI components
 */

/* Buttons */
.btn {
    font-family: var(--font-family-mono);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    padding: var(--space-sm) var(--space-xl);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-main);
    color: var(--text-on-primary);
    box-shadow: var(--shadow-sm);
}

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

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-surface-alt);
    border-color: var(--text-secondary);
}

.btn:active {
    transform: translateY(0);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Theme Toggle */
.theme-toggle,
.theme-toggle-mobile {
    background: rgba(255, 255, 255, 0.15);
    border: none;
    border-radius: var(--radius-md);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-on-dark);
    font-size: var(--font-size-lg);
    transition: all var(--transition-fast);
    backdrop-filter: blur(10px);
}

.theme-toggle:hover,
.theme-toggle-mobile:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.05);
}

.theme-toggle:active,
.theme-toggle-mobile:active {
    transform: scale(0.95);
}

/* Skill Cards */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

.skill-card {
    background: var(--bg-surface);
    backdrop-filter: blur(20px);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
    border: 1px solid var(--border-color);
}

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

.skill-card i {
    font-size: var(--font-size-3xl);
    color: var(--color-primary);
    margin-bottom: var(--space-md);
    display: block;
}

.skill-card h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.skill-card p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
    line-height: var(--line-height-relaxed);
}

/* Timeline */
.timeline-filter {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-3xl);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--space-sm) var(--space-lg);
    background: var(--bg-surface);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-full);
    font-family: var(--font-family-mono);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.filter-btn.active {
    background: var(--gradient-main);
    border-color: transparent;
    color: var(--text-on-primary);
}

.timeline {
    position: relative;
    padding: var(--space-2xl) 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--gradient-main);
    border-radius: var(--radius-full);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--space-3xl);
    padding-left: calc(var(--space-3xl) + 30px);
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}

.timeline-item:nth-child(1) { animation-delay: 0.1s; }
.timeline-item:nth-child(2) { animation-delay: 0.2s; }
.timeline-item:nth-child(3) { animation-delay: 0.3s; }
.timeline-item:nth-child(4) { animation-delay: 0.4s; }
.timeline-item:nth-child(5) { animation-delay: 0.5s; }
.timeline-item:nth-child(6) { animation-delay: 0.6s; }
.timeline-item:nth-child(7) { animation-delay: 0.7s; }
.timeline-item:nth-child(8) { animation-delay: 0.8s; }

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

.timeline-item.hidden {
    display: none;
}

.timeline-dot {
    position: absolute;
    left: 22px;
    top: 4px;
    width: 20px;
    height: 20px;
    background: var(--color-primary);
    border: 4px solid var(--bg-body);
    border-radius: 50%;
    box-shadow: 0 0 0 4px var(--border-color);
    z-index: var(--z-base);
}

.timeline-item[data-type="work"] .timeline-dot {
    background: var(--color-secondary);
}

.timeline-content {
    background: var(--gradient-card);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    color: var(--text-on-dark);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    flex-wrap: wrap;
}

.timeline-title {
    font-size: var(--font-size-xl);
    color: var(--text-on-dark);
    margin: 0;
}

.timeline-subtitle {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.9);
    font-weight: var(--font-weight-medium);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.timeline-date {
    font-family: var(--font-family-mono);
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
    white-space: nowrap;
}

.timeline-description {
    color: rgba(255, 255, 255, 0.85);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-md);
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.timeline-tag {
    background: rgba(255, 255, 255, 0.2);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    color: var(--text-on-dark);
    font-weight: var(--font-weight-medium);
}

/* Project Cards */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-xl);
    margin-top: var(--space-2xl);
}

.project-card {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
    cursor: pointer;
    border: 1px solid var(--border-color);
    position: relative;
}

.project-card::after {
    content: '';
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 6px solid var(--text-tertiary);
    opacity: 0;
    transition: all var(--transition-base);
}

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

.project-card:hover::after {
    opacity: 0.6;
    animation: bounce 1s infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(5px);
    }
}

.project-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform var(--transition-base);
}

.project-card:hover .project-image {
    transform: scale(1.05);
    opacity: 0.9;
}

.project-content {
    padding: var(--space-lg);
}

.project-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
    font-family: var(--font-family-mono);
}

.project-description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-md);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.project-tag {
    color: var(--text-on-primary);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    position: relative;
    background: linear-gradient(135deg, #5393ce 0%, #605778 50%, #5393ce 100%);
    background-size: 300% 100%;
    background-attachment: fixed;
    animation: gradientShift 8s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

/* Project Modal */
.project-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-overlay);
    z-index: var(--z-modal-backdrop);
    backdrop-filter: blur(8px);
    padding: var(--space-xl);
    overflow-y: auto;
}

.project-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.project-modal-content {
    background: var(--bg-surface-alt);
    border-radius: var(--radius-lg);
    max-width: 900px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.project-modal-close {
    position: sticky;
    top: var(--space-md);
    right: var(--space-md);
    margin-left: auto;
    display: block;
    width: 40px;
    height: 40px;
    background: var(--bg-overlay);
    border: none;
    border-radius: var(--radius-full);
    color: var(--text-on-dark);
    font-size: var(--font-size-xl);
    cursor: pointer;
    z-index: var(--z-modal);
    transition: all var(--transition-fast);
    backdrop-filter: blur(10px);
}

.project-modal-close:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: scale(1.1);
}

.project-modal-body {
    padding: var(--space-2xl);
}

.project-modal-title {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-md);
    color: var(--text-primary);
    font-family: var(--font-family-mono);
}

.project-modal-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}

.project-modal-tech img {
    height: 28px;
    width: auto;
}

.project-modal-description {
    color: var(--text-primary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-xl);
}

.project-modal-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.project-modal-links h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-md);
}

.project-modal-links ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.project-modal-links li {
    margin-bottom: var(--space-sm);
}

.project-modal-links a {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
    text-decoration: none;
    font-size: var(--font-size-sm);
}

.project-modal-links a:hover {
    background: var(--bg-surface-alt);
    border-color: var(--color-primary);
    transform: translateX(5px);
}

.project-modal-links a i {
    font-size: var(--font-size-lg);
}

/* Contact Form */
.contact-form {
    max-width: var(--content-max-width);
    margin: var(--space-2xl) auto 0;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    font-size: var(--font-size-sm);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--space-md);
    background: var(--bg-surface);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(83, 147, 206, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.g-recaptcha {
    margin-bottom: var(--space-lg);
    display: flex;
    justify-content: center;
}

.form-actions {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

/* Social Links */
.social-links {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-full);
    color: var(--text-on-dark);
    font-size: var(--font-size-xl);
    transition: all var(--transition-fast);
    backdrop-filter: blur(10px);
}

.social-links a:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-3px);
}

/* Mobile specific */
@media (max-width: 768px) {
    .timeline::before {
        left: 10px;
    }
    
    .timeline-item {
        padding-left: var(--space-2xl);
    }
    
    .timeline-dot {
        left: 2px;
    }
    
    .timeline-header {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .project-modal {
        padding: var(--space-md);
    }
    
    .project-modal-body {
        padding: var(--space-lg);
    }
}