/* CSS Variables & Reset */
:root {
    --bg-dark: #050505;
    --bg-card: rgba(26, 26, 26, 0.7);
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.1);

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;

    --accent-primary: #00f2ea;
    /* Neon Cyan */
    --accent-secondary: #7c3aed;
    /* Purple Glow */
    --accent-gradient: linear-gradient(135deg, #00f2ea 0%, #7c3aed 100%);

    --border-color: rgba(255, 255, 255, 0.08);
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
    --font-heading: 'Outfit', sans-serif;

    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    background-color: var(--bg-dark);
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 34px;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    font-family: var(--font-heading);
    letter-spacing: 0.5px;
}

.btn-primary {
    background: var(--accent-gradient);
    color: #000;
    box-shadow: 0 4px 20px rgba(0, 242, 234, 0.15);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 242, 234, 0.25);
    filter: brightness(1.1);
}

.btn-outline {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    backdrop-filter: blur(8px);
    margin-left: 15px;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.section-title {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 4rem;
    text-align: center;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

section {
    padding: 120px 0;
}

/* Navbar */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(5, 5, 5, 0.6);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    z-index: 1000;
    padding: 20px 0;
    border-bottom: 1px solid var(--glass-border);
    transition: var(--transition-smooth);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -1px;
}

.dot {
    color: var(--accent-primary);
}

.nav-links {
    display: flex;
    gap: 35px;
    align-items: center;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: var(--transition-smooth);
}

.nav-links a:hover::after {
    width: 100%;
}

/* Language Switcher */
.lang-switcher {
    display: flex;
    gap: 10px;
    background: var(--glass-bg);
    padding: 5px;
    border-radius: 8px;
    border: 1px solid var(--glass-border);
}

.lang-btn {
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    opacity: 0.5;
}

.lang-btn.active {
    background: var(--accent-gradient);
    color: #000;
    opacity: 1;
}

.hamburger {
    display: none;
    cursor: pointer;
}

.line {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 5px;
    transition: var(--transition);
}

/* Hero Section */
#hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 80px;
    background:
        radial-gradient(circle at 20% 30%, rgba(0, 242, 234, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(124, 58, 237, 0.05) 0%, transparent 40%),
        url('assets/images/hero_bg.png');
    background-size: cover;
    background-position: center;
    position: relative;
}

#hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(5, 5, 5, 0.4) 0%, var(--bg-dark) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 900px;
}

.profile-container {
    width: 160px;
    height: 160px;
    margin-bottom: 40px;
    border-radius: 30px;
    padding: 3px;
    background: var(--accent-gradient);
    transform: rotate(-3deg);
    transition: var(--transition-smooth);
}

.profile-container:hover {
    transform: rotate(0deg) scale(1.05);
}

.profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 28px;
    border: 4px solid var(--bg-dark);
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 5rem;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1;
    letter-spacing: -2px;
}

.highlight {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.6rem;
    color: var(--text-secondary);
    margin-bottom: 50px;
    font-weight: 400;
}

/* About Section */
.about-content {
    display: flex;
    justify-content: center;
    align-items: center;
}

.about-text {
    max-width: 850px;
    text-align: center;
    background: var(--glass-bg);
    padding: 50px;
    border-radius: 24px;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(12px);
}

.about-text p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    font-weight: 300;
}

.skills {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
}

.skill-tag {
    background: rgba(255, 255, 255, 0.05);
    padding: 10px 24px;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid var(--glass-border);
    transition: var(--transition-smooth);
}

.skill-tag:hover {
    border-color: var(--accent-primary);
    background: rgba(0, 242, 234, 0.05);
    transform: scale(1.05);
}

/* Experience Section */
.timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 100%;
    background: linear-gradient(to bottom, transparent, var(--glass-border), transparent);
}

.timeline-item {
    margin-bottom: 60px;
    position: relative;
    width: 100%;
    display: flex;
    justify-content: center;
}

.timeline-date {
    position: absolute;
    left: 0;
    width: 42%;
    text-align: right;
    padding-right: 50px;
    color: var(--accent-primary);
    font-weight: 700;
    font-family: var(--font-heading);
    top: 20px;
}

.timeline-content {
    width: 48%;
    background: var(--glass-bg);
    padding: 35px;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
}

.timeline-content:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.2);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: 52%;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 0;
    margin-right: 52%;
}

.timeline-item:nth-child(even) .timeline-date {
    left: auto;
    right: 0;
    text-align: left;
    padding-right: 0;
    padding-left: 50px;
}

.timeline-content h3 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.timeline-content h4 {
    color: var(--accent-secondary);
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 20px;
}

.timeline-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 30px;
}

.project-card {
    background: var(--glass-bg);
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(12px);
    transition: var(--transition-smooth);
}

.project-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--accent-primary);
}

.project-image {
    height: 180px;
    background: linear-gradient(135deg, rgba(26, 26, 26, 0.5), rgba(10, 10, 10, 0.8));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.project-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, rgba(0, 242, 234, 0.1), transparent);
}

.placeholder-img {
    color: var(--text-secondary);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 2px;
    font-family: var(--font-heading);
    z-index: 1;
}

.project-info {
    padding: 30px;
}

.project-info h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    margin-bottom: 12px;
}

.project-info p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 25px;
    line-height: 1.6;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 25px;
}

.project-tags span {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-primary);
    background: rgba(0, 242, 234, 0.05);
    padding: 6px 14px;
    border-radius: 8px;
    border: 1px solid rgba(0, 242, 234, 0.1);
}

.project-links a {
    margin-right: 15px;
    font-size: 1.1rem;
}

.project-links a:hover {
    color: var(--accent-color);
}

/* Contact Section */
.contact-container {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    background: var(--glass-bg);
    padding: 60px;
    border-radius: 32px;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(15px);
}

.contact-text {
    font-size: 1.4rem;
    color: var(--text-secondary);
    margin-bottom: 50px;
}

.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.contact-item {
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 16px;
    border: 1px solid var(--glass-border);
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--accent-primary);
    margin-bottom: 15px;
}

.social-links {
    margin-top: 60px;
    display: flex;
    justify-content: center;
    gap: 25px;
}

.social-links a {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--glass-bg);
    border-radius: 12px;
    font-size: 1.4rem;
    color: var(--text-secondary);
    border: 1px solid var(--glass-border);
    transition: var(--transition-smooth);
}

.social-links a:hover {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    transform: translateY(-5px);
    background: rgba(0, 242, 234, 0.05);
}

/* Footer */
footer {
    padding: 60px 0;
    text-align: center;
    border-top: 1px solid var(--glass-border);
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3.5rem;
    }

    .about-text {
        margin: 0 20px;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.8rem;
        letter-spacing: -1px;
    }

    .nav-links {
        display: none;
    }

    .hamburger {
        display: block;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        flex-direction: column;
        align-items: flex-start;
        padding-left: 45px;
    }

    .timeline-date {
        position: static;
        width: 100%;
        text-align: left;
        padding: 0;
        margin-bottom: 15px;
    }

    .timeline-content {
        width: 100%;
        margin-left: 0 !important;
    }

    .timeline-item:nth-child(even) .timeline-date {
        text-align: left;
        padding-left: 0;
    }

    .contact-container {
        padding: 40px 20px;
    }

    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(10, 10, 10, 0.98);
        padding: 40px 20px;
        border-bottom: 1px solid var(--glass-border);
        gap: 25px;
    }
}

/* Scroll Reveal Animation */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}