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

:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-card: #1a1a1a;
    --green-primary: #00e676;
    --green-dark: #00c853;
    --green-glow: rgba(0, 230, 118, 0.15);
    --green-glow-strong: rgba(0, 230, 118, 0.3);
    --text-primary: #f0f0f0;
    --text-secondary: #a0a0a0;
    --text-muted: #666666;
    --border-color: #2a2a2a;
    --font: 'Inter', sans-serif;
    --transition: 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    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%;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Navbar ===== */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

#navbar.scrolled {
    border-bottom-color: var(--border-color);
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--green-primary);
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--green-primary);
    transition: width var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--green-primary);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

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

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

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Hero ===== */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 60px;
    padding: 100px 24px 60px;
    max-width: 1100px;
    margin: 0 auto;
}

.hero-content {
    flex: 1;
}

.hero-greeting {
    font-size: 1rem;
    color: var(--green-primary);
    font-weight: 500;
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.hero-name {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 8px;
}

.hero-title {
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.hero-description {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 480px;
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-decoration {
    flex: 0 0 auto;
}

.code-block {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 28px 32px;
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
    display: flex;
    flex-direction: column;
    gap: 6px;
    box-shadow: 0 0 40px var(--green-glow);
    animation: slideInRight 1.75s ease-in-out forwards, float 6s ease-in-out 1.75s infinite;
    opacity: 0;
}

.code-line {
    white-space: nowrap;
}

.code-keyword {
    color: #c792ea;
}

.code-var {
    color: #82aaff;
}

.code-string {
    color: var(--green-primary);
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

@keyframes slideInRight {
    0% {
        opacity: 0;
        transform: translateX(100vw);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInUp {
    0% {
        opacity: 0;
        transform: translateY(100vh);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--green-primary);
    color: var(--bg-primary);
    border-color: var(--green-primary);
}

.btn-primary:hover {
    background: var(--green-dark);
    border-color: var(--green-dark);
    box-shadow: 0 0 20px var(--green-glow-strong);
}

.btn-outline {
    background: transparent;
    color: var(--green-primary);
    border-color: var(--green-primary);
}

.btn-outline:hover {
    background: var(--green-glow);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ===== Section Common ===== */
section {
    padding: 100px 0;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 56px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 48px;
    height: 3px;
    background: var(--green-primary);
    margin: 12px auto 0;
    border-radius: 2px;
}

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

.about-content {
    display: flex;
    align-items: center;
    gap: 60px;
}

.about-image-placeholder {
    width: 260px;
    height: 260px;
    border-radius: 16px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: var(--green-primary);
    box-shadow: 0 0 30px var(--green-glow);
}

.about-photo {
    /* width: 2600px;
    height: 475px; */
    width: 120rem;
    height: 20rem;
    object-fit: cover;
    border: 2px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 0 30px var(--green-glow);
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-size: 1.02rem;
    line-height: 1.8;
}

.about-stats {
    display: flex;
    gap: 40px;
    margin-top: 28px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--green-primary);
}

.stat-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ===== Experience ===== */
#experience {
    background: var(--bg-secondary);
}

.experience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 28px;
    margin-bottom: 48px;
}

.experience-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 32px;
    display: flex;
    flex-direction: column;
    gap: 18px;
    transition: var(--transition);
}

.experience-card:hover {
    border-color: var(--green-primary);
    transform: translateY(-4px);
    box-shadow: 0 8px 30px var(--green-glow);
}

.experience-icon {
    font-size: 2.2rem;
    color: var(--green-primary);
}

.experience-info h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.experience-info p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.experience-stat {
    display: flex;
    align-items: baseline;
    gap: 4px;
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.experience-stat .stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--green-primary);
}

.experience-stat .stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-left: 8px;
}

.experience-extras {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
}

.extra-stat {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 16px 24px;
    transition: var(--transition);
}

.extra-stat:hover {
    border-color: var(--green-primary);
    box-shadow: 0 4px 20px var(--green-glow);
}

.extra-stat i {
    font-size: 1.3rem;
    color: var(--green-primary);
}

.extra-stat .stat-number {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--green-primary);
}

.extra-stat .stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ===== Skills ===== */
#skills {
    background: var(--bg-primary);
}

.skills-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

.skill-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 28px 20px;
    text-align: center;
    transition: var(--transition);
    width: 145px;
    flex-shrink: 0;
}

.skill-card:hover {
    border-color: var(--green-primary);
    transform: translateY(-4px);
    box-shadow: 0 8px 30px var(--green-glow);
}

.skill-icon {
    font-size: 2.4rem;
    color: var(--green-primary);
    margin-bottom: 14px;
}

.skill-card h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.skill-bar {
    width: 100%;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    overflow: hidden;
}

.skill-fill {
    height: 100%;
    width: 100%;
    background: linear-gradient(90deg, var(--green-dark), var(--green-primary));
    border-radius: 3px;
}

/* ===== Projects ===== */
#projects {
    background: var(--bg-secondary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 28px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-6px);
    border-color: var(--green-primary);
    box-shadow: 0 12px 40px var(--green-glow);
}

.project-image {
    height: 180px;
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-card));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem;
    color: var(--green-primary);
    border-bottom: 1px solid var(--border-color);
}

.project-info {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.project-info h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.project-info p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 18px;
}

.project-tags span {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--green-glow);
    color: var(--green-primary);
    border: 1px solid rgba(0, 230, 118, 0.2);
}

.project-links {
    display: flex;
    justify-content: flex-end;
    gap: 16px;
    margin-top: auto;
}

.project-link {
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
    transition: color var(--transition);
}

.project-link:hover {
    color: var(--green-primary);
}

/* ===== Contact ===== */
#contact {
    background: var(--bg-primary);
}

.contact-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-top: -36px;
    margin-bottom: 48px;
    font-size: 1.05rem;
}

.contact-simple {
    max-width: 500px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 28px;
    align-items: center;
    text-align: center;
}

.contact-simple .contact-item {
    display: flex;
    align-items: center;
    gap: 18px;
    text-align: left;
}

.contact-simple .contact-item a {
    color: var(--text-secondary);
    transition: color var(--transition);
}

.contact-simple .contact-item a:hover {
    color: var(--green-primary);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 18px;
}

.contact-item i {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    background: var(--green-glow);
    color: var(--green-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 2px;
}

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

.social-links {
    display: flex;
    gap: 14px;
    margin-top: 8px;
}

.social-links a {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.social-links a:hover {
    border-color: var(--green-primary);
    color: var(--green-primary);
    background: var(--green-glow);
}

/* ===== Footer ===== */
footer {
    padding: 28px 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

footer p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

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

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

/* ===== Responsive ===== */
@media (max-width: 768px) {
    #hero {
        flex-direction: column;
        text-align: center;
        gap: 40px;
        padding-top: 100px;
    }

    .hero-name {
        font-size: 2.4rem;
    }

    .hero-title {
        font-size: 1.2rem;
    }

    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-buttons {
        justify-content: center;
    }

    .code-block {
        font-size: 0.8rem;
        padding: 20px 24px;
        text-align: left;
        animation: slideInUp 1.75s ease-in-out forwards, float 6s ease-in-out 1.75s infinite;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 64px;
        left: 0;
        width: 100%;
        flex-direction: column;
        background: rgba(10, 10, 10, 0.97);
        padding: 24px;
        gap: 20px;
        transform: translateY(-120%);
        transition: transform var(--transition);
    }

    .nav-links.open {
        transform: translateY(0);
    }

    .nav-links a {
        font-size: 1rem;
    }

    .about-content {
        flex-direction: column;
        text-align: center;
    }

    .about-image-placeholder {
        width: 200px;
        height: 200px;
        font-size: 4rem;
    }

    .about-photo {
        width: 200px;
        height: 200px;
    }

    .about-stats {
        justify-content: center;
    }

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

    .experience-extras {
        gap: 20px;
    }

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

@media (max-width: 480px) {
    .hero-name {
        font-size: 1.9rem;
    }

    .about-stats {
        gap: 24px;
    }

    .skills-grid {
        gap: 12px;
    }

    .skill-card {
        width: calc(50% - 8px);
    }
}