/* ===== CSS Variables ===== */
:root {
    /* Colors */
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #b8b8b8;
    --text-muted: #888888;

    /* Accent Colors */
    --accent-primary: #00FFFF;
    --accent-secondary: #00DDDD;
    --accent-tertiary: #00BBBB;
    --accent-glow: rgba(0, 255, 255, 0.4);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00FFFF 0%, #00DDDD 100%);
    --gradient-secondary: linear-gradient(135deg, #00BBBB 0%, #00FFFF 100%);
    --gradient-tertiary: linear-gradient(135deg, #00DDDD 0%, #00AAAA 100%);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Inter', sans-serif;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px var(--accent-glow);
}

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

html {
    scroll-behavior: smooth;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* ===== Custom Scrollbar ===== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-secondary);
}

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

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition-medium);
    cursor: pointer;
    border: none;
    text-align: center;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 40px var(--accent-glow);
}

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

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

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-medium);
}

.navbar.scrolled {
    background: rgba(10, 10, 10, 0.95);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-primary);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-medium);
}

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

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

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

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    overflow: hidden;
}

.gradient-ball {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.3;
    animation: float 20s infinite ease-in-out;
}

.ball-1 {
    width: 500px;
    height: 500px;
    background: var(--gradient-primary);
    top: -200px;
    right: -200px;
    animation-delay: 0s;
}

.ball-2 {
    width: 400px;
    height: 400px;
    background: var(--gradient-secondary);
    bottom: -150px;
    left: -150px;
    animation-delay: 5s;
}

.ball-3 {
    width: 300px;
    height: 300px;
    background: var(--gradient-tertiary);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 10s;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    33% {
        transform: translate(50px, -50px) scale(1.1);
    }

    66% {
        transform: translate(-50px, 50px) scale(0.9);
    }
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
}

.hero-content {
    flex: 1;
    text-align: left;
    padding-left: var(--spacing-md);
}

.hero-greeting {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    animation: fadeInUp 0.8s ease;
}

.hero-title {
    font-size: 5rem;
    font-weight: 700;
    font-family: var(--font-primary);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 0 var(--spacing-lg) 0;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.6s backwards;
}

/* Hero Image */
.hero-image {
    flex-shrink: 0;
    animation: fadeInUp 0.8s ease 0.7s backwards;
}

.hero-image img {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    border: 5px solid var(--accent-primary);
    box-shadow: 0 0 30px var(--accent-glow);
    animation: breathe 3s ease-in-out infinite;
}

@keyframes breathe {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

/* ===== Sections ===== */
section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    font-family: var(--font-primary);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== About Section ===== */
.about {
    background: var(--bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.about-card {
    background: var(--bg-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-medium);
}

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

.about-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-primary);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.card-description {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== Skills Section ===== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.skill-card {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 2px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    transition: all var(--transition-medium);
    cursor: pointer;
}

.skill-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.skill-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-sm);
    color: var(--accent-primary);
}

.skill-icon svg {
    width: 100%;
    height: 100%;
}

.skill-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ===== Projects Section ===== */
.projects {
    background: var(--bg-secondary);
    overflow: hidden;
}

.projects .container {
    max-width: 100%;
    padding: 0;
}

.projects-carousel {
    width: 100%;
    overflow: hidden;
    position: relative;
    padding: var(--spacing-md) 0;
}

.projects-carousel::before,
.projects-carousel::after {
    content: '';
    position: absolute;
    top: 0;
    width: 100px;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.projects-carousel::before {
    left: 0;
    background: linear-gradient(to right, var(--bg-secondary), transparent);
}

.projects-carousel::after {
    right: 0;
    background: linear-gradient(to left, var(--bg-secondary), transparent);
}

.projects-track {
    display: flex;
    gap: var(--spacing-lg);
    animation: scroll 50s linear infinite;
    width: fit-content;
}

.projects-track:hover {
    animation-play-state: paused;
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(calc(-500px * 4 - var(--spacing-lg) * 4));
    }
}

.project-card {
    background: var(--bg-tertiary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
    min-width: 500px;
    max-width: 500px;
    flex-shrink: 0;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-medium);
}

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

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-primary);
}

.project-card.coming-soon {
    opacity: 0.8;
    border-style: dashed;
}

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

.project-icon {
    font-size: 3rem;
}

.project-badge {
    background: var(--gradient-primary);
    color: var(--text-primary);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.project-title {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.project-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    background: rgba(0, 255, 255, 0.1);
    color: var(--accent-primary);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    border: 1px solid var(--accent-primary);
}

/* ===== Contact Section ===== */
.contact-subtitle {
    text-align: center;
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr 1fr;
    gap: var(--spacing-lg);
    max-width: 1400px;
    margin: 0 auto;
}

.contact-info-left,
.contact-info-right {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-item {
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-start;
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-medium);
}

.contact-item:hover {
    border-color: var(--accent-primary);
    transform: translateX(10px);
}

.contact-info-right .contact-item:hover {
    transform: translateX(-10px);
}

.contact-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.contact-item p {
    color: var(--text-secondary);
}

.contact-form-center {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 2px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem;
    background: var(--bg-tertiary);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-secondary);
    font-size: 1rem;
    transition: all var(--transition-medium);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    text-align: center;
    color: var(--text-muted);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.8s ease;
}

/* ===== Responsive Design ===== */
@media screen and (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: rgba(26, 26, 26, 0.98);
        backdrop-filter: blur(10px);
        width: 100%;
        text-align: center;
        transition: left var(--transition-medium);
        padding: var(--spacing-md) 0;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

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

    .hero-title {
        font-size: 3rem;
    }

    .hero-description {
        font-size: 1.125rem;
    }

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

    .hero-container {
        flex-direction: column;
        text-align: center;
    }

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

    .hero-image img {
        width: 200px;
        height: 200px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }

    .about-grid,
    .skills-grid {
        grid-template-columns: 1fr;
    }

    .project-card {
        min-width: 350px;
        max-width: 350px;
    }

    @keyframes scroll {
        0% {
            transform: translateX(0);
        }

        100% {
            transform: translateX(calc(-350px * 4 - var(--spacing-lg) * 4));
        }
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .contact-info-left,
    .contact-info-right {
        order: 2;
    }

    .contact-form-center {
        order: 1;
    }
}

@media screen and (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .nav-container {
        padding: 1rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }
}