/**
 * Modern Portfolio Enhancements
 * Additional styling for sleek, modern design
 */

/* ============================================
   Smooth Scroll Animations
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.scale-in {
    opacity: 0;
    transform: scale(0.8);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

/* ============================================
   Enhanced Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-gradient);
    overflow: hidden;
    padding: var(--space-8) 0;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(16, 185, 129, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
    pointer-events: none;
    animation: pulse 15s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.hero-title {
    font-size: clamp(48px, 10vw, 80px);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-3);
    background: linear-gradient(135deg, var(--text-primary), var(--muted-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
    font-size: clamp(20px, 4vw, 28px);
    color: var(--muted-light);
    margin-bottom: var(--space-2);
    font-weight: 400;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.hero-description {
    font-size: clamp(16px, 2.5vw, 20px);
    color: var(--muted);
    margin-bottom: var(--space-6);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.hero-cta {
    display: flex;
    gap: var(--space-2);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.6s backwards;
}

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

/* Floating elements background */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

.floating-element {
    position: absolute;
    background: rgba(16, 185, 129, 0.1);
    border-radius: 50%;
    animation: float 20s infinite ease-in-out;
}

.floating-element:nth-child(1) {
    width: 300px;
    height: 300px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.floating-element:nth-child(2) {
    width: 200px;
    height: 200px;
    top: 60%;
    right: 10%;
    background: rgba(59, 130, 246, 0.1);
    animation-delay: 5s;
}

.floating-element:nth-child(3) {
    width: 150px;
    height: 150px;
    bottom: 20%;
    left: 30%;
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    33% {
        transform: translate(30px, -30px) rotate(120deg);
    }
    66% {
        transform: translate(-20px, 20px) rotate(240deg);
    }
}

/* ============================================
   Enhanced Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-1);
    padding: 14px 32px;
    font-size: var(--text-base);
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    position: relative;
    overflow: hidden;
    min-width: 44px;
    min-height: 44px;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(16, 185, 129, 0.4);
}

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

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 18px 40px;
    font-size: var(--text-lg);
}

.btn-sm {
    padding: 10px 20px;
    font-size: var(--text-sm);
}

/* ============================================
   Enhanced Cards
   ============================================ */
.card {
    background: var(--elev);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    border: 1px solid var(--border);
    transition: all var(--transition-slow);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    transform: scaleX(0);
    transition: transform var(--transition-slow);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: var(--border-light);
}

.card:hover::before {
    transform: scaleX(1);
}

/* Project Cards */
.project-card {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.project-card .project-image {
    position: relative;
    width: 100%;
    padding-top: 62.5%; /* 16:10 aspect ratio */
    overflow: hidden;
    border-radius: var(--radius-md);
    margin-bottom: var(--space-3);
    background: var(--bg);
}

.project-card .project-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.project-card .project-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-title {
    font-size: var(--text-xl);
    margin-bottom: var(--space-2);
    color: var(--text-primary);
}

.project-summary {
    color: var(--muted);
    margin-bottom: var(--space-3);
    flex: 1;
}

.project-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    color: var(--accent);
    font-weight: 600;
    font-size: var(--text-sm);
    margin-top: auto;
    transition: gap var(--transition-fast);
}

.project-card:hover .project-cta {
    gap: var(--space-2);
}

/* ============================================
   Skills Section - Pills & Badges
   ============================================ */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-3);
    margin-top: var(--space-6);
}

.skill-card {
    background: var(--elev);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    text-align: center;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.skill-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.skill-card:hover::before {
    opacity: 0.1;
}

.skill-card:hover {
    transform: translateY(-4px) scale(1.05);
    border-color: var(--accent);
    box-shadow: 0 10px 30px rgba(16, 185, 129, 0.2);
}

.skill-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-2);
    color: var(--accent);
    position: relative;
    z-index: 1;
}

.skill-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
    position: relative;
    z-index: 1;
}

.skill-level {
    font-size: var(--text-sm);
    color: var(--muted);
    position: relative;
    z-index: 1;
}

/* Pill Badges */
.tag {
    display: inline-block;
    padding: 6px 14px;
    font-size: var(--text-xs);
    font-weight: 600;
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: 20px;
    transition: all var(--transition-fast);
}

.tag:hover {
    background: rgba(16, 185, 129, 0.2);
    border-color: var(--accent);
    transform: translateY(-2px);
}

/* ============================================
   Timeline Section
   ============================================ */
.timeline {
    position: relative;
    max-width: 900px;
    margin: var(--space-8) auto;
    padding: 0 var(--container-padding);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--space-8);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.timeline-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: 0;
    margin-right: 50%;
    padding-right: var(--space-6);
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 50%;
    margin-right: 0;
    padding-left: var(--space-6);
}

.timeline-icon {
    position: absolute;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-weight: 700;
    box-shadow: 0 0 0 4px var(--bg), 0 0 0 6px var(--border);
    z-index: 2;
}

.timeline-content {
    background: var(--elev);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    transition: all var(--transition-base);
}

.timeline-content:hover {
    border-color: var(--accent);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    transform: scale(1.02);
}

.timeline-year {
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--accent);
    margin-bottom: var(--space-1);
}

.timeline-title {
    font-size: var(--text-xl);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.timeline-description {
    color: var(--muted);
    line-height: 1.7;
}

/* Mobile Timeline */
@media (max-width: 767px) {
    .timeline::before {
        left: 30px;
    }
    
    .timeline-icon {
        left: 30px;
    }
    
    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        margin-left: 70px;
        margin-right: 0;
        padding-left: var(--space-3);
        padding-right: var(--space-3);
    }
}

/* ============================================
   Testimonials Carousel
   ============================================ */
.testimonials {
    background: var(--elev);
    padding: var(--space-10) 0;
    position: relative;
    overflow: hidden;
}

.testimonials::before {
    content: '"';
    position: absolute;
    top: 20%;
    left: 5%;
    font-size: 200px;
    color: rgba(16, 185, 129, 0.05);
    font-family: Georgia, serif;
    line-height: 1;
}

.testimonials-carousel {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.testimonial-item {
    display: none;
    text-align: center;
    animation: fadeIn 0.6s ease-in-out;
}

.testimonial-item.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.testimonial-text {
    font-size: var(--text-xl);
    color: #000000 !important;
    line-height: 1.8;
    margin-bottom: var(--space-4);
    font-style: italic;
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

.testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
}

.testimonial-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 3px solid var(--accent);
}

.testimonial-info {
    text-align: left;
}

.testimonial-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.testimonial-role {
    font-size: var(--text-sm);
    color: var(--muted);
}

.testimonial-nav {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
    margin-top: var(--space-4);
}

.testimonial-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.testimonial-dot.active {
    background: var(--accent);
    transform: scale(1.3);
}

.testimonial-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--accent);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    color: var(--accent);
}

.testimonial-arrow:hover {
    background: var(--accent);
    color: #ffffff;
    transform: translateY(-50%) scale(1.1);
}

.testimonial-arrow.prev {
    left: var(--container-padding);
}

.testimonial-arrow.next {
    right: var(--container-padding);
}

/* ============================================
   Contact Form Enhanced
   ============================================ */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: var(--space-4);
}

.form-label {
    display: block;
    font-weight: 600;
    color: #000000 !important;
    margin-bottom: var(--space-1);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 14px 18px;
    background: var(--elev);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text);
    font-size: var(--text-base);
    font-family: var(--font-base);
    transition: all var(--transition-base);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

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

/* Social Icons */
.social-links {
    display: flex;
    gap: var(--space-2);
    justify-content: center;
    margin-top: var(--space-4);
}

.social-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--elev);
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--muted);
    transition: all var(--transition-base);
}

.social-link:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #ffffff;
    transform: translateY(-4px) rotate(5deg);
}

/* ============================================
   Responsive Grid System
   ============================================ */
.grid {
    display: grid;
    gap: var(--space-4);
}

.grid-cols-1 {
    grid-template-columns: 1fr;
}

@media (min-width: 480px) {
    .grid-cols-sm-2 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .grid-cols-md-2 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-cols-md-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .grid-cols-lg-3 {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .grid-cols-lg-4 {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ============================================
   Loading Animations
   ============================================ */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

.loading-skeleton {
    background: linear-gradient(
        90deg,
        var(--elev) 0%,
        var(--elev-hover) 50%,
        var(--elev) 100%
    );
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center {
    text-align: center;
}

.text-gradient {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.mt-4 { margin-top: var(--space-4); }
.mb-4 { margin-bottom: var(--space-4); }
.my-4 { margin-top: var(--space-4); margin-bottom: var(--space-4); }
.py-8 { padding-top: var(--space-8); padding-bottom: var(--space-8); }