/* ==========================================================================
   HOMEPAGE STYLES
   ========================================================================== */

/* General Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family-primary);
    background-color: var(--color-background);
    color: var(--color-text-primary);
    line-height: var(--line-height-normal);
    transition: background-color var(--transition-base), color var(--transition-base);
}

/* ==========================================================================
   THEME TOGGLE (FIXED POSITION)
   ========================================================================== */

.theme-toggle-fixed {
    position: fixed;
    top: var(--space-6);
    right: var(--space-6);
    z-index: var(--z-fixed);
}

.theme-toggle-btn {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-primary);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    font-size: 1.25rem;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
}

.theme-toggle-btn:hover {
    background: var(--color-hover-bg);
    border-color: var(--color-primary-500);
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.theme-toggle-btn:focus {
    outline: 2px solid var(--color-focus-ring);
    outline-offset: 2px;
}

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

.theme-icon {
    transition: transform var(--transition-fast);
}

.theme-toggle-btn:hover .theme-icon {
    transform: rotate(15deg);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Animation for theme changes */
@keyframes themeChange {
    0% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.1) rotate(180deg); }
    100% { transform: scale(1) rotate(360deg); }
}

.theme-toggle-btn.changing .theme-icon {
    animation: themeChange 0.3s ease-in-out;
}

/* ==========================================================================
   HOMEPAGE CONTAINER
   ========================================================================== */

.homepage-container {
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-8) var(--space-4);
    position: relative;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 800px;
    width: 100%;
}

.profile-photo-container {
    margin-bottom: var(--space-8);
    position: relative;
}

.profile-photo {
    width: 200px;
    height: 200px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 4px solid var(--color-primary-500);
    box-shadow: var(--shadow-xl);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.profile-photo:hover {
    transform: scale(1.05);
    box-shadow: 0 20px 40px rgba(14, 165, 233, 0.3);
}

.hero-text {
    width: 100%;
}

.hero-name {
    font-size: var(--font-size-6xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-4);
    line-height: var(--line-height-tight);
}

.first-name {
    color: var(--color-text-primary);
}

.last-name {
    color: var(--color-text-secondary);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
    margin-bottom: 0;
}

/* ==========================================================================
   SECTION STYLES
   ========================================================================== */

section {
    padding: var(--space-20) 0;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

section.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-semibold);
    text-align: center;
    margin-bottom: var(--space-12);
    color: var(--color-text-primary);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -var(--space-4);
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary-500), var(--color-primary-400));
    border-radius: var(--radius-full);
}

/* ==========================================================================
   ABOUT SECTION
   ========================================================================== */

.about-section {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.about-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.about-text {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
}

.about-text:last-child {
    margin-bottom: 0;
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */

.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
    margin-bottom: var(--space-12);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-primary {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.contact-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    padding: var(--space-4);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.contact-item:hover {
    background-color: var(--color-hover-bg);
    border-color: var(--color-primary-500);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.contact-icon {
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.contact-link {
    color: var(--color-text-primary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
}

.contact-link:hover {
    color: var(--color-primary-600);
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.social-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background-color: var(--color-hover-bg);
    border-color: var(--color-primary-500);
    transform: translateX(5px);
    color: var(--color-text-primary);
}

.social-icon {
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.social-text {
    font-weight: var(--font-weight-medium);
}

/* GitHub Highlight */
.github-highlight {
    max-width: 500px;
    margin: 0 auto;
}

.github-link {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-6);
    background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));
    color: white;
    text-decoration: none;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.github-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.github-link:hover::before {
    left: 100%;
}

.github-link:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
    color: white;
}

.github-icon {
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.github-text {
    display: flex;
    flex-direction: column;
}

.github-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-1);
}

.github-subtitle {
    font-size: var(--font-size-sm);
    opacity: 0.9;
    font-family: var(--font-family-primary);
}

/* ==========================================================================
   RESUME SECTION
   ========================================================================== */

.resume-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
}

/* ==========================================================================
   NAVIGATION SECTION
   ========================================================================== */

.nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-6);
    max-width: 1000px;
    margin: 0 auto;
}

.nav-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--space-8);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    text-decoration: none;
    color: var(--color-text-primary);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.nav-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-500);
    color: var(--color-text-primary);
}

.nav-card-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--space-4);
    transition: transform var(--transition-fast);
}

.nav-card:hover .nav-card-icon {
    transform: scale(1.1);
}

.nav-card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-3);
    color: var(--color-text-primary);
}

.nav-card-description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin: 0;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    line-height: 1;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
}

.btn:focus {
    outline: 2px solid var(--color-focus-ring);
    outline-offset: 2px;
}

.btn-primary {
    background-color: var(--color-primary-600);
    color: white;
    border-color: var(--color-primary-600);
}

.btn-primary:hover {
    background-color: var(--color-primary-700);
    border-color: var(--color-primary-700);
    color: white;
    text-decoration: none;
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    background-color: var(--color-hover-bg);
    color: var(--color-text-primary);
    text-decoration: none;
    transform: translateY(-1px);
}

.btn-icon {
    font-size: var(--font-size-sm);
}

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

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

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

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 900px;
    height: 90%;
    max-height: 700px;
    background-color: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: scale(0.9);
    transition: transform var(--transition-base);
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-border);
    background-color: var(--color-surface-secondary);
}

.modal-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    color: var(--color-text-secondary);
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius-base);
    transition: all var(--transition-fast);
    line-height: 1;
}

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

.modal-body {
    flex: 1;
    padding: 0;
    overflow: hidden;
}

.modal-body iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.modal-footer {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    padding: var(--space-6);
    border-top: 1px solid var(--color-border);
    background-color: var(--color-surface-secondary);
}

/* ==========================================================================
   BACKGROUND ANIMATION
   ========================================================================== */

.background-animation {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    overflow: hidden;
    z-index: -1;
    pointer-events: none;
}

.bubble {
    position: absolute;
    bottom: -100px;
    border-radius: 50%;
    opacity: 0.3;
    animation: rise 15s infinite ease-in-out;
}

.bubble:nth-child(1) {
    left: 10%;
    width: 40px;
    height: 40px;
    background-color: var(--color-primary-300);
    animation-duration: 12s;
    animation-delay: 0s;
}

.bubble:nth-child(2) {
    left: 20%;
    width: 25px;
    height: 25px;
    background-color: var(--color-primary-400);
    animation-duration: 14s;
    animation-delay: 2s;
}

.bubble:nth-child(3) {
    left: 30%;
    width: 60px;
    height: 60px;
    background-color: var(--color-primary-200);
    animation-duration: 16s;
    animation-delay: 4s;
}

.bubble:nth-child(4) {
    left: 40%;
    width: 15px;
    height: 15px;
    background-color: var(--color-primary-500);
    animation-duration: 10s;
    animation-delay: 1s;
}

.bubble:nth-child(5) {
    left: 50%;
    width: 50px;
    height: 50px;
    background-color: var(--color-primary-300);
    animation-duration: 18s;
    animation-delay: 3s;
}

.bubble:nth-child(6) {
    left: 60%;
    width: 35px;
    height: 35px;
    background-color: var(--color-primary-400);
    animation-duration: 13s;
    animation-delay: 5s;
}

.bubble:nth-child(7) {
    left: 70%;
    width: 70px;
    height: 70px;
    background-color: var(--color-primary-200);
    animation-duration: 20s;
    animation-delay: 0s;
}

.bubble:nth-child(8) {
    left: 80%;
    width: 30px;
    height: 30px;
    background-color: var(--color-primary-500);
    animation-duration: 11s;
    animation-delay: 6s;
}

.bubble:nth-child(9) {
    left: 15%;
    width: 45px;
    height: 45px;
    background-color: var(--color-primary-300);
    animation-duration: 17s;
    animation-delay: 2s;
}

.bubble:nth-child(10) {
    left: 85%;
    width: 20px;
    height: 20px;
    background-color: var(--color-primary-400);
    animation-duration: 15s;
    animation-delay: 4s;
}

.bubble:nth-child(11) {
    left: 25%;
    width: 55px;
    height: 55px;
    background-color: var(--color-primary-200);
    animation-duration: 19s;
    animation-delay: 1s;
}

.bubble:nth-child(12) {
    left: 75%;
    width: 40px;
    height: 40px;
    background-color: var(--color-primary-300);
    animation-duration: 14s;
    animation-delay: 3s;
}

@keyframes rise {
    0% {
        transform: translateY(0) scale(1) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 0.3;
    }
    90% {
        opacity: 0.3;
    }
    100% {
        transform: translateY(-100vh) scale(0.5) rotate(360deg);
        opacity: 0;
    }
}

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

/* Mobile Styles (up to 768px) */
@media (max-width: 48em) {
    .theme-toggle-fixed {
        top: var(--space-4);
        right: var(--space-4);
    }
    
    .theme-toggle-btn {
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1.1rem;
    }
    
    .hero-section {
        padding: var(--space-6) var(--space-4);
        min-height: 90vh;
    }
    
    .profile-photo {
        width: 150px;
        height: 150px;
    }
    
    .hero-name {
        font-size: var(--font-size-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    
    .social-links {
        gap: var(--space-2);
    }
    
    .nav-grid {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }
    
    .nav-card {
        padding: var(--space-6);
    }
    
    .nav-card-icon {
        font-size: var(--font-size-3xl);
    }
    
    .resume-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .modal-content {
        width: 95%;
        height: 85%;
        margin: var(--space-4);
    }
    
    .modal-header,
    .modal-footer {
        padding: var(--space-4);
    }
    
    .modal-footer {
        flex-direction: column;
    }
}

/* Tablet Styles (768px to 1024px) */
@media (min-width: 48em) and (max-width: 64em) {
    .contact-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-8);
    }
    
    .social-links {
        flex-direction: row;
        flex-wrap: wrap;
        gap: var(--space-3);
    }
    
    .nav-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Desktop Styles (1024px and up) */
@media (min-width: 64em) {
    .hero-content {
        flex-direction: row;
        text-align: left;
        gap: var(--space-12);
    }
    
    .profile-photo-container {
        margin-bottom: 0;
        flex-shrink: 0;
    }
    
    .profile-photo {
        width: 250px;
        height: 250px;
    }
    
    .hero-text {
        flex: 1;
    }
    
    .contact-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-12);
        align-items: start;
    }
    
    .social-links {
        flex-direction: row;
        flex-wrap: wrap;
        gap: var(--space-4);
    }
    
    .github-link {
        justify-content: center;
    }
}

/* Large Desktop Styles (1280px and up) */
@media (min-width: 80em) {
    .hero-name {
        font-size: var(--font-size-7xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-2xl);
    }
    
    .section-title {
        font-size: var(--font-size-4xl);
    }
}

/* ==========================================================================
   ACCESSIBILITY IMPROVEMENTS
   ========================================================================== */

/* Focus styles for keyboard navigation */
.nav-card:focus,
.contact-link:focus,
.social-link:focus,
.github-link:focus {
    outline: 2px solid var(--color-focus-ring);
    outline-offset: 2px;
}

/* Reduced motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .bubble {
        animation: none;
        opacity: 0.1;
    }
    
    section {
        opacity: 1;
        transform: none;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .btn-primary {
        border: 2px solid currentColor;
    }
    
    .nav-card,
    .contact-item,
    .social-link {
        border-width: 2px;
    }
    
    .profile-photo {
        border-width: 3px;
    }
}

/* ==========================================================================
   PROJECTS SECTION STYLES
   ========================================================================== */

.projects-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-8) var(--space-4);
}

.projects-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.projects-header h1 {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
}

.projects-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: var(--line-height-relaxed);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-8);
    margin-top: var(--space-12);
}

.project-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-500);
}

.project-card.featured {
    border-color: var(--color-primary-400);
    background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-surface-secondary) 100%);
}

.project-card.featured::before {
    content: "Featured";
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));
    color: white;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.project-card {
    position: relative;
}

.project-card-header {
    margin-bottom: var(--space-4);
}

.project-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-3);
}

.project-title a {
    color: var(--color-text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.project-title a:hover {
    color: var(--color-primary-600);
}

.project-meta {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.organization {
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary-600);
}

.role {
    font-style: italic;
}

.date-range {
    font-family: var(--font-family-primary);
    font-weight: var(--font-weight-medium);
}

.project-summary {
    flex: 1;
    margin-bottom: var(--space-4);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.tech-tag {
    background-color: var(--color-primary-100);
    color: var(--color-primary-800);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    border: 1px solid var(--color-primary-200);
    transition: all var(--transition-fast);
}

.tech-tag:hover {
    background-color: var(--color-primary-200);
    transform: scale(1.05);
}

/* Dark mode tech tags with better contrast */
[data-theme="dark"] .tech-tag {
    background-color: var(--color-primary-900);
    color: var(--color-primary-100);
    border-color: var(--color-primary-700);
}

[data-theme="dark"] .tech-tag:hover {
    background-color: var(--color-primary-800);
    color: var(--color-primary-50);
    border-color: var(--color-primary-600);
}

.project-card-footer {
    margin-top: auto;
}

.read-more {
    color: var(--color-primary-600);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
}

.read-more:hover {
    color: var(--color-primary-700);
    transform: translateX(3px);
}

/* ==========================================================================
   PROJECT DETAIL STYLES
   ========================================================================== */

.project-detail-container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-8) var(--space-4);
}

.project-detail-header {
    margin-bottom: var(--space-8);
}

.breadcrumb {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-4);
}

.breadcrumb a {
    color: var(--color-primary-600);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.breadcrumb a:hover {
    color: var(--color-primary-700);
    text-decoration: underline;
}

.project-detail-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-6);
    line-height: var(--line-height-tight);
}

.project-detail-meta {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 32px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    max-width: 500px;
    width: 100%;
    position: relative;
    overflow: hidden;
}

.project-detail-meta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4);
    background-size: 400% 400%;
    animation: gradientShift 3s ease infinite;
}

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

.meta-item {
    display: flex;
    align-items: center;
    padding: 16px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    position: relative;
}

.meta-item:last-child {
    border-bottom: none;
}

.meta-item:hover {
    transform: translateX(8px);
    background: rgba(102, 126, 234, 0.05);
    margin: 0 -16px;
    padding: 16px;
    border-radius: 12px;
}

.meta-icon {
    width: 24px;
    height: 24px;
    margin-right: 16px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}

.meta-icon.org {
    background: linear-gradient(135deg, #ff6b6b, #ee5a52);
    color: white;
}

.meta-icon.role {
    background: linear-gradient(135deg, #4ecdc4, #44a08d);
    color: white;
}

.meta-icon.duration {
    background: linear-gradient(135deg, #45b7d1, #2980b9);
    color: white;
}

.meta-content {
    flex: 1;
}

.meta-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #666;
    margin-bottom: 4px;
}

.meta-value {
    font-size: 16px;
    font-weight: 500;
    color: #333;
    line-height: 1.4;
}

.current-badge {
    display: inline-flex;
    align-items: center;
    background: linear-gradient(135deg, #00d4aa, #00a085);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-left: 8px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.pulse-dot {
    width: 6px;
    height: 6px;
    background: white;
    border-radius: 50%;
    margin-right: 6px;
    animation: blink 1.5s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

@media (max-width: 480px) {
    .project-detail-meta {
        padding: 24px;
        margin: 20px;
    }
    
    .meta-item:hover {
        transform: none;
        margin: 0;
        padding: 16px 0;
        background: none;
    }
}

.project-tech-stack {
    margin-bottom: var(--space-8);
}

.project-tech-stack h3 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.project-detail-content {
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-12);
}

.project-detail-content h2 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin: var(--space-8) 0 var(--space-4) 0;
}

.project-detail-content h3 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin: var(--space-6) 0 var(--space-3) 0;
}

.project-detail-content ul {
    margin: var(--space-4) 0;
    padding-left: var(--space-6);
}

.project-detail-content li {
    margin-bottom: var(--space-2);
    line-height: var(--line-height-relaxed);
}

.project-detail-content strong {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-semibold);
}

.project-navigation {
    border-top: 1px solid var(--color-border);
    padding-top: var(--space-8);
}

.nav-links {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-6);
    flex-wrap: wrap;
}

.nav-link {
    color: var(--color-primary-600);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    text-align: center;
    min-width: 120px;
}

.nav-link:hover {
    background-color: var(--color-primary-50);
    border-color: var(--color-primary-500);
    color: var(--color-primary-700);
    transform: translateY(-1px);
}

.nav-link.back {
    background-color: var(--color-primary-600);
    color: white;
    border-color: var(--color-primary-600);
}

.nav-link.back:hover {
    background-color: var(--color-primary-700);
    border-color: var(--color-primary-700);
    color: white;
}

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

@media (max-width: 48em) {
    .projects-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    
    .project-card {
        padding: var(--space-4);
    }
    
    .project-detail-container {
        padding: var(--space-6) var(--space-4);
    }
    
    .project-detail-title {
        font-size: var(--font-size-2xl);
    }
    
    .project-detail-meta {
        grid-template-columns: 1fr;
        padding: var(--space-4);
    }
    
    .nav-links {
        flex-direction: column;
        align-items: stretch;
    }
    
    .nav-link {
        min-width: auto;
    }
    
    .tech-stack {
        gap: var(--space-1);
    }
    
    .tech-tag {
        font-size: var(--font-size-2xs);
        padding: var(--space-1) var(--space-2);
    }
}

@media (min-width: 48em) and (max-width: 64em) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ==========================================================================
   PRINT STYLES
   ========================================================================== */

@media print {
    .theme-toggle-fixed,
    .background-animation,
    .modal {
        display: none !important;
    }
    
    .hero-section {
        min-height: auto;
        page-break-after: avoid;
    }
    
    .nav-card,
    .contact-item,
    .social-link,
    .project-card {
        break-inside: avoid;
    }
    
    .github-link {
        background: none !important;
        color: var(--color-text-primary) !important;
        border: 1px solid var(--color-border) !important;
    }
    
    .project-card {
        box-shadow: none !important;
        border: 1px solid var(--color-border) !important;
    }
    
    .project-navigation {
        display: none !important;
    }
}