/* CSS Variables */
:root {
    /* Colors */
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --bg-card: #1e1e1e;
    --accent-primary: #64ffda;
    --accent-color: #64ffda;
    --accent-secondary: #ff6b6b;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #666666;
    --border-color: #333333;
    --hover-bg: #333333;
    
    /* Fonts */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'Fira Code', 'Geist Mono', 'SF Mono', Consolas, monospace;
    --font-display: 'DM Sans', var(--font-primary);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px rgba(100, 255, 218, 0.2);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Floating Icons Animation */
.floating-icons {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.floating-icon {
    position: absolute;
    color: var(--accent-color);
    opacity: 0.1;
    font-size: 1.5rem;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
}

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
    .floating-icon {
        animation: none;
        opacity: 0.05;
    }
}

/* Individual icon animations */
.icon-1 {
    top: 20%;
    left: -50px;
    animation: floatRight 20s linear infinite;
    animation-delay: 0s;
    font-size: 2rem;
    opacity: 0.08;
}

.icon-2 {
    top: 40%;
    right: -50px;
    animation: floatLeft 25s linear infinite;
    animation-delay: -5s;
    font-size: 1.8rem;
    opacity: 0.12;
}

.icon-3 {
    top: 60%;
    left: -50px;
    animation: floatRight 30s linear infinite;
    animation-delay: -10s;
    font-size: 2.2rem;
    opacity: 0.06;
}

.icon-4 {
    top: 80%;
    right: -50px;
    animation: floatLeft 22s linear infinite;
    animation-delay: -15s;
    font-size: 1.6rem;
    opacity: 0.1;
}

.icon-5 {
    top: 15%;
    left: -50px;
    animation: floatRight 28s linear infinite;
    animation-delay: -8s;
    font-size: 1.4rem;
    opacity: 0.09;
}

.icon-6 {
    top: 70%;
    right: -50px;
    animation: floatLeft 24s linear infinite;
    animation-delay: -12s;
    font-size: 1.9rem;
    opacity: 0.07;
}

.icon-7 {
    top: 30%;
    left: -50px;
    animation: floatRight 26s linear infinite;
    animation-delay: -3s;
    font-size: 1.7rem;
    opacity: 0.11;
}

.icon-8 {
    top: 50%;
    right: -50px;
    animation: floatLeft 21s linear infinite;
    animation-delay: -18s;
    font-size: 1.3rem;
    opacity: 0.08;
}

.icon-9 {
    top: 10%;
    left: -50px;
    animation: floatRight 32s linear infinite;
    animation-delay: -6s;
    font-size: 2.1rem;
    opacity: 0.05;
}

.icon-10 {
    top: 90%;
    right: -50px;
    animation: floatLeft 27s linear infinite;
    animation-delay: -9s;
    font-size: 1.5rem;
    opacity: 0.13;
}

.icon-11 {
    top: 25%;
    left: -50px;
    animation: floatRight 23s linear infinite;
    animation-delay: -14s;
    font-size: 1.8rem;
    opacity: 0.09;
}

.icon-12 {
    top: 65%;
    right: -50px;
    animation: floatLeft 29s linear infinite;
    animation-delay: -7s;
    font-size: 1.6rem;
    opacity: 0.06;
}

.icon-13 {
    top: 35%;
    left: -50px;
    animation: floatRight 31s linear infinite;
    animation-delay: -11s;
    font-size: 2rem;
    opacity: 0.1;
}

.icon-14 {
    top: 75%;
    right: -50px;
    animation: floatLeft 26s linear infinite;
    animation-delay: -16s;
    font-size: 1.4rem;
    opacity: 0.12;
}

.icon-15 {
    top: 45%;
    left: -50px;
    animation: floatRight 24s linear infinite;
    animation-delay: -4s;
    font-size: 1.7rem;
    opacity: 0.07;
}

/* Keyframe animations for floating icons */
@keyframes floatRight {
    0% {
        transform: translateX(-100px) translateY(0px) rotate(0deg);
    }
    25% {
        transform: translateX(25vw) translateY(-20px) rotate(90deg);
    }
    50% {
        transform: translateX(50vw) translateY(15px) rotate(180deg);
    }
    75% {
        transform: translateX(75vw) translateY(-10px) rotate(270deg);
    }
    100% {
        transform: translateX(calc(100vw + 100px)) translateY(0px) rotate(360deg);
    }
}

@keyframes floatLeft {
    0% {
        transform: translateX(100px) translateY(0px) rotate(0deg);
    }
    25% {
        transform: translateX(-25vw) translateY(20px) rotate(-90deg);
    }
    50% {
        transform: translateX(-50vw) translateY(-15px) rotate(-180deg);
    }
    75% {
        transform: translateX(-75vw) translateY(10px) rotate(-270deg);
    }
    100% {
        transform: translateX(calc(-100vw - 100px)) translateY(0px) rotate(-360deg);
    }
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-arrow {
    animation: bounce 2s infinite;
    color: var(--accent-color);
    font-size: 1.5rem;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading-overlay.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-spinner {
    text-align: center;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-sm);
}

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

.loading-spinner p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(15, 15, 15, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all var(--transition-medium);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    text-decoration: none;
    font-family: var(--font-display);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: width var(--transition-medium);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: all var(--transition-medium);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Section */
.section {
    padding: var(--spacing-xl) 0;
    position: relative;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
    font-family: var(--font-display);
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--accent-primary);
    margin: var(--spacing-sm) auto 0;
    border-radius: 2px;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at 30% 70%, rgba(100, 255, 218, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 70% 30%, rgba(255, 107, 107, 0.1) 0%, transparent 50%);
    position: relative;
    overflow: hidden;
    padding: 2.5em;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr;
    max-width: 800px;
    gap: var(--spacing-xl);
    align-items: center;
    width: 100%;
    position: relative;
    z-index: 1;
    padding: 0 var(--spacing-md);
}

.hero-text {
    text-align: center;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    font-family: var(--font-display);
}

.highlight {
    color: var(--accent-primary);
    background: linear-gradient(135deg, var(--accent-primary), #4ecdc4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition-medium);
    border: 2px solid transparent;
    cursor: pointer;
}

.btn-primary {
    background: var(--accent-primary);
    color: var(--bg-primary);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    background: transparent;
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(100, 255, 218, 0.3);
}

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

.btn-secondary:hover {
    background: var(--hover-bg);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.filter-btn {
    padding: 0.75rem 1.5rem;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.9rem;
    font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--accent-primary);
    color: var(--bg-primary);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.project-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-medium);
    border: 1px solid var(--border-color);
    opacity: 1;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-primary);
}

.project-card.hidden {
    display: none;
}

.project-image {
    position: relative;
    height: 200px;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.project-icon {
    font-size: 3rem;
    color: var(--accent-primary);
    opacity: 0.8;
    transition: all var(--transition-medium);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all var(--transition-medium);
}

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

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

.action-btn {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--accent-primary);
    color: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
}

.action-btn:hover {
    background: var(--text-primary);
    transform: scale(1.1);
}

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

.project-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-display);
}

.project-content p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: var(--spacing-md);
}

.tech-tag {
    padding: 0.375rem 0.75rem;
    background: var(--bg-secondary);
    color: var(--accent-primary);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

.project-stats {
    display: flex;
    gap: var(--spacing-md);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.project-stats span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Contact Section */
.contact {
    padding: 4rem 0;
    border-top: 1px solid var(--border-color);
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--accent-color);
}

.contact-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-methods {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem 2rem;
    background-color: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: all var(--transition-medium) ease;
    position: relative;
}

.contact-link:hover {
    border-color: var(--accent-color);
    background-color: rgba(100, 255, 218, 0.05);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(100, 255, 218, 0.1);
}

.contact-link i {
    font-size: 1.2rem;
    color: var(--accent-color);
}

/* Footer */
.footer {
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Project Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: var(--bg-card);
    margin: 2% auto;
    padding: 0;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease;
}

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

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    color: var(--text-secondary);
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    z-index: 1;
}

.modal-close:hover {
    color: var(--accent-primary);
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.modal-header h2 {
    color: var(--text-primary);
    font-family: var(--font-display);
    margin: 0;
}

.modal-actions {
    display: flex;
    gap: var(--spacing-sm);
}

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

.modal-image {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.modal-project-icon {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--accent-primary), #4ecdc4);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    font-size: 3rem;
    color: var(--bg-primary);
}

.modal-details h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-display);
}

.modal-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
    font-size: 1.1rem;
}

.modal-features {
    margin-bottom: var(--spacing-lg);
}

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

.modal-features li {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    position: relative;
    padding-left: 1.5rem;
}

.modal-features li::before {
    content: '▶';
    color: var(--accent-primary);
    position: absolute;
    left: 0;
    top: 0;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

/* Animation Classes */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--bg-secondary);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        padding: var(--spacing-md) 0;
        border-top: 1px solid var(--border-color);
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hero-text h1 {
        font-size: 2.5rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }

    .section-title {
        font-size: 2rem;
    }

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

    .project-filters {
        gap: 0.5rem;
    }

    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }

    .modal-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .modal-actions {
        width: 100%;
        justify-content: center;
    }

    .contact-actions {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero {
        padding: 1.5rem var(--spacing-sm);
    }

    .hero-text h1 {
        font-size: 2rem;
    }

    .projects-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .project-filters {
        flex-wrap: wrap;
        justify-content: center;
    }

    .contact-methods {
        flex-direction: column;
        align-items: center;
    }
    
    .contact-link {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

/* Print Styles */
@media print {
    .floating-icons,
    .loading-overlay,
    .navbar,
    .scroll-indicator,
    .modal {
        display: none !important;
    }

    body {
        background: white !important;
        color: black !important;
    }

    .section {
        page-break-inside: avoid;
    }
}