:root {
    --background: #080c0a;
    --background-secondary: #0d1310;
    --surface: #111914;
    --surface-hover: #17221b;
    --text: #f2f7f4;
    --text-secondary: #9eaca5;
    --primary: #00ff99;
    --primary-dark: #00c978;
    --border: rgba(0, 255, 153, 0.14);
    --shadow: rgba(0, 0, 0, 0.35);
    --header: rgba(8, 12, 10, 0.82);
    --player: rgba(13, 19, 16, 0.94);
    --radius: 16px;
    --transition: 0.25s ease;
}

html[data-theme="light"] {
    --background: #f3f7f5;
    --background-secondary: #e8efeb;
    --surface: #ffffff;
    --surface-hover: #f1f7f4;
    --text: #16211b;
    --text-secondary: #596860;
    --primary: #00a864;
    --primary-dark: #00834e;
    --border: rgba(0, 130, 82, 0.16);
    --shadow: rgba(20, 45, 32, 0.1);
    --header: rgba(243, 247, 245, 0.86);
    --player: rgba(255, 255, 255, 0.94);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 90px;
}

body {
    min-height: 100vh;
    background:
        radial-gradient(
            circle at 50% 0%,
            rgba(0, 255, 153, 0.08),
            transparent 35%
        ),
        var(--background);
    color: var(--text);
    font-family:
        Inter,
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;
    line-height: 1.7;
    transition:
        background var(--transition),
        color var(--transition);
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background-image:
        linear-gradient(
            rgba(0, 255, 153, 0.025) 1px,
            transparent 1px
        ),
        linear-gradient(
            90deg,
            rgba(0, 255, 153, 0.025) 1px,
            transparent 1px
        );
    background-size: 50px 50px;
}

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

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

button {
    font: inherit;
}

.container {
    width: min(1100px, calc(100% - 40px));
    margin-inline: auto;
}

.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 17px 0;
    background: var(--header);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition:
        background var(--transition),
        border-color var(--transition);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.logo {
    color: var(--text);
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

.nav-links a {
    display: block;
    padding: 8px 13px;
    color: var(--text-secondary);
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    transition:
        color var(--transition),
        background var(--transition);
}

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

.hero {
    min-height: 700px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 330px;
    align-items: center;
    gap: 80px;
}

.hero-content {
    max-width: 680px;
}

.hero-tag {
    display: inline-block;
    margin-bottom: 20px;
    padding: 6px 12px;
    color: var(--primary);
    background: rgba(0, 255, 153, 0.07);
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.hero h1 {
    margin-bottom: 18px;
    color: var(--text);
    font-size: clamp(3.5rem, 8vw, 6.5rem);
    font-weight: 850;
    letter-spacing: -4px;
    line-height: 0.95;
}

.hero h1 span {
    color: var(--primary);
}

.hero-quote {
    margin-bottom: 18px;
    color: var(--text-secondary);
    font-size: 1.15rem;
    font-style: italic;
}

.hero-description {
    max-width: 600px;
    margin-bottom: 32px;
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.hero-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 145px;
    padding: 11px 20px;
    border-radius: 9px;
    font-size: 0.9rem;
    font-weight: 700;
    transition:
        transform var(--transition),
        background var(--transition),
        color var(--transition),
        border-color var(--transition);
}

.primary-button {
    background: var(--primary);
    color: #06110b;
}

.primary-button:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

.secondary-button {
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--border);
}

.secondary-button:hover {
    color: var(--primary);
    border-color: var(--primary);
    transform: translateY(-3px);
}

.hero-avatar {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.avatar-glow {
    position: absolute;
    width: 280px;
    height: 280px;
    background: rgba(0, 255, 153, 0.12);
    border-radius: 50%;
    filter: blur(45px);
}

.hero-avatar img {
    position: relative;
    width: 280px;
    height: 280px;
    object-fit: cover;
    border: 1px solid var(--border);
    border-radius: 50%;
    box-shadow:
        0 0 0 10px rgba(0, 255, 153, 0.025),
        0 25px 70px var(--shadow);
    transition:
        transform var(--transition),
        border-color var(--transition);
}

.hero-avatar img:hover {
    transform: scale(1.03);
    border-color: var(--primary);
}

.section {
    margin-bottom: 35px;
    padding: 80px 50px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 20px 60px var(--shadow);
    transition:
        background var(--transition),
        border-color var(--transition);
}

.section-heading {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 45px;
}

.section-heading span {
    color: var(--primary);
    font-family:
        "JetBrains Mono",
        "Courier New",
        monospace;
    font-size: 0.85rem;
    font-weight: 700;
}

.section-heading h2 {
    color: var(--text);
    font-size: clamp(2rem, 4vw, 2.7rem);
    letter-spacing: -1px;
    line-height: 1.2;
}

.section-heading::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--border);
}

.about-content {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 60px;
    align-items: center;
}

.typing {
    width: min(650px, 100%);
    margin-bottom: 25px;
}

.about-text p {
    max-width: 720px;
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.about-card {
    padding: 30px;
    background: var(--background-secondary);
    border: 1px solid var(--border);
    border-radius: 13px;
    transition:
        transform var(--transition),
        border-color var(--transition);
}

.about-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
}

.about-card-icon {
    margin-bottom: 20px;
    color: var(--primary);
    font-family:
        "JetBrains Mono",
        "Courier New",
        monospace;
    font-size: 2rem;
    font-weight: 700;
}

.about-card h3 {
    margin-bottom: 8px;
    color: var(--text);
}

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

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 15px;
}

.skill-card {
    padding: 25px;
    background: var(--background-secondary);
    border: 1px solid var(--border);
    border-radius: 13px;
    transition:
        transform var(--transition),
        border-color var(--transition),
        background var(--transition);
}

.skill-card:hover {
    border-color: var(--primary);
    background: var(--surface-hover);
    transform: translateY(-4px);
}

.skill-card h3 {
    margin-bottom: 15px;
    color: var(--text);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.skill-card img {
    display: block;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

.project-card {
    position: relative;
    display: flex;
    gap: 25px;
    padding: 30px;
    background: var(--background-secondary);
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
    transition:
        transform var(--transition),
        border-color var(--transition),
        background var(--transition);
}

.project-card:hover {
    border-color: var(--primary);
    background: var(--surface-hover);
    transform: translateY(-5px);
}

.project-number {
    flex-shrink: 0;
    color: var(--primary);
    font-family:
        "JetBrains Mono",
        "Courier New",
        monospace;
    font-size: 0.8rem;
    font-weight: 700;
}

.project-content {
    min-width: 0;
}

.project-category {
    display: inline-block;
    margin-bottom: 8px;
    color: var(--primary);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.project-content h3 {
    margin-bottom: 10px;
    color: var(--text);
    font-size: 1.5rem;
    line-height: 1.2;
}

.project-content p {
    margin-bottom: 18px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.project-tech {
    display: flex;
    gap: 7px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.project-tech span {
    padding: 4px 8px;
    color: var(--text-secondary);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 5px;
    font-size: 0.7rem;
}

.project-link {
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 700;
    transition: opacity var(--transition);
}

.project-link:hover {
    opacity: 0.7;
}

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

.contact-content > p {
    max-width: 650px;
    margin: 0 auto 30px;
    color: var(--text-secondary);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.social-links a {
    padding: 10px 18px;
    background: var(--background-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 0.85rem;
    font-weight: 600;
    transition:
        color var(--transition),
        border-color var(--transition),
        transform var(--transition),
        background var(--transition);
}

.social-links a:hover {
    color: var(--primary);
    border-color: var(--primary);
    background: var(--surface-hover);
    transform: translateY(-3px);
}

.music-player {
    position: fixed;
    left: 25px;
    bottom: 25px;
    z-index: 2000;
    width: 310px;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px;
    background: var(--player);
    border: 1px solid var(--border);
    border-radius: 13px;
    box-shadow: 0 15px 45px var(--shadow);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
}

.music-cover {
    width: 52px;
    height: 52px;
    flex-shrink: 0;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.music-info {
    min-width: 0;
    flex: 1;
}

.music-info strong {
    display: block;
    overflow: hidden;
    color: var(--text);
    font-size: 0.78rem;
    font-weight: 700;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.music-info span {
    display: block;
    margin-bottom: 7px;
    color: var(--text-secondary);
    font-size: 0.68rem;
}

.progress-container {
    width: 100%;
    height: 3px;
    overflow: hidden;
    background: var(--background-secondary);
    border-radius: 999px;
}

.progress-bar {
    width: 0;
    height: 100%;
    background: var(--primary);
    border-radius: 999px;
    transition: width 0.1s linear;
}

.music-button {
    width: 34px;
    height: 34px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: 50%;
    background: var(--surface);
    color: var(--primary);
    cursor: pointer;
    font-size: 0.75rem;
    transition:
        transform var(--transition),
        border-color var(--transition),
        background var(--transition);
}

.music-button:hover {
    border-color: var(--primary);
    background: var(--surface-hover);
    transform: scale(1.08);
}

.theme-toggle {
    position: fixed;
    right: 25px;
    bottom: 25px;
    z-index: 2000;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: 50%;
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    font-size: 1.2rem;
    box-shadow: 0 10px 30px var(--shadow);
    transition:
        transform var(--transition),
        color var(--transition),
        border-color var(--transition);
}

.theme-toggle:hover {
    color: var(--primary);
    border-color: var(--primary);
    transform: translateY(-3px) rotate(20deg);
}

.footer {
    padding: 35px 20px 120px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.8rem;
}

::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 999px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

::selection {
    background: var(--primary);
    color: #06110b;
}

@media (max-width: 1024px) {
    .hero {
        gap: 50px;
        grid-template-columns: minmax(0, 1fr) 280px;
    }

    .avatar-glow,
    .hero-avatar img {
        width: 240px;
        height: 240px;
    }

    .section {
        padding: 60px 40px;
    }

    .about-content {
        gap: 40px;
        grid-template-columns: minmax(0, 1fr) 260px;
    }
}

@media (max-width: 900px) {
    .hero {
        min-height: auto;
        padding: 60px 0 40px;
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .hero-content {
        margin-inline: auto;
        max-width: 100%;
    }

    .hero-description {
        margin-inline: auto;
    }

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

    .hero-avatar {
        order: -1;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .about-card {
        max-width: 500px;
        margin-inline: auto;
    }

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

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

@media (max-width: 700px) {
    .container {
        width: min(100% - 24px, 1100px);
    }

    .header {
        padding: 12px 0;
    }

    .nav {
        flex-direction: column;
        gap: 12px;
    }

    .nav-links {
        justify-content: center;
        flex-wrap: wrap;
        gap: 4px;
    }

    .nav-links a {
        padding: 6px 10px;
        font-size: 0.78rem;
    }

    .hero {
        padding: 40px 0 30px;
    }

    .hero h1 {
        font-size: clamp(2.8rem, 12vw, 4.5rem);
        letter-spacing: -2.5px;
    }

    .hero-quote {
        font-size: 1rem;
    }

    .hero-description {
        font-size: 0.95rem;
    }

    .hero-avatar img,
    .avatar-glow {
        width: 200px;
        height: 200px;
    }

    .section {
        padding: 40px 20px;
        margin-bottom: 24px;
    }

    .section-heading {
        margin-bottom: 28px;
        gap: 10px;
    }

    .section-heading h2 {
        font-size: clamp(1.7rem, 6vw, 2.2rem);
    }

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

    .skill-card {
        padding: 20px;
    }

    .project-card {
        flex-direction: column;
        gap: 12px;
        padding: 24px;
    }

    .project-content h3 {
        font-size: 1.3rem;
    }

    .music-player {
        left: 12px;
        bottom: 12px;
        width: calc(100% - 24px);
        max-width: 360px;
    }

    .theme-toggle {
        right: 14px;
        bottom: 80px;
        width: 44px;
        height: 44px;
    }

    .footer {
        padding: 30px 16px 110px;
    }
}

@media (max-width: 480px) {
    .container {
        width: calc(100% - 16px);
    }

    .hero h1 {
        font-size: clamp(2.4rem, 13vw, 3.6rem);
        letter-spacing: -2px;
    }

    .hero-tag {
        font-size: 0.68rem;
        padding: 5px 10px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .button {
        width: 100%;
        min-width: 0;
    }

    .section {
        padding: 32px 16px;
        border-radius: 12px;
    }

    .about-card {
        padding: 22px;
    }

    .social-links a {
        padding: 9px 14px;
        font-size: 0.8rem;
    }

    .music-player {
        left: 8px;
        bottom: 8px;
        width: calc(100% - 16px);
        padding: 8px;
        gap: 10px;
    }

    .music-cover {
        width: 46px;
        height: 46px;
    }

    .theme-toggle {
        right: 10px;
        bottom: 72px;
        width: 42px;
        height: 42px;
        font-size: 1.1rem;
    }

    .footer {
        padding-bottom: 100px;
        font-size: 0.75rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
    }
}