:root {
    --bg: #0b0d12;
    --bg-alt: #12151d;
    --surface: #171b26;
    --border: #262b3a;
    --text: #e9ebf1;
    --text-dim: #9aa1b4;
    --accent: #ff5a3c;
    --accent-2: #3cc9ff;
    --accent-3: #7c5cff;
    --accent-4: #ffb63c;
    --accent-5: #3cff8f;
    --accent-6: #ff3c8f;
    --font-display: 'League Spartan', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --font-pixel: 'Press Start 2P', monospace;
    --radius: 0;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-display);
    line-height: 1.6;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='4' height='4'%3E%3Crect width='1' height='1' fill='%23ffffff' fill-opacity='0.6'/%3E%3Crect x='2' y='2' width='1' height='1' fill='%23ffffff' fill-opacity='0.6'/%3E%3C/svg%3E");
    background-size: 4px 4px;
    opacity: 0.035;
}

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

ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

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

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

.eyebrow {
    font-family: var(--font-pixel);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    font-size: 0.6rem;
    color: var(--accent-2);
    margin: 0 0 0.85rem;
}

/* Header / Nav */

#header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(11, 13, 18, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.15rem;
    letter-spacing: 0.05em;
    display: inline-flex;
    align-items: center;
}

.logo .accent {
    font-family: var(--font-pixel);
    margin-left: 0.15em;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-size: 0.95rem;
    color: var(--text-dim);
    transition: color 0.2s ease;
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--text);
}

/* Hero */

#hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4rem 1.5rem;
    overflow: hidden;
    text-align: center;
}

/* Pixel-art canvas effect over the grid */

.pixel-grid {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
    -webkit-mask-image: radial-gradient(ellipse at center, transparent 0%, transparent 32%, black 60%, black 100%);
    mask-image: radial-gradient(ellipse at center, transparent 0%, transparent 32%, black 60%, black 100%);
}

.pixel-block {
    position: absolute;
    width: 48px;
    height: 48px;
    opacity: 0;
    animation-name: pixel-blink;
    animation-timing-function: ease-in-out;
    animation-iteration-count: infinite;
}

@keyframes pixel-blink {
    0% {
        opacity: 0;
    }

    15% {
        opacity: 0.3;
    }

    70% {
        opacity: 0.3;
    }

    100% {
        opacity: 0;
    }
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--border) 1px, transparent 1px),
        linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 48px 48px;
    -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
    mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
    opacity: 0.5;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
}

#hero h1 {
    font-size: clamp(2.75rem, 8vw, 5rem);
    font-weight: 800;
    margin: 0 0 0.5rem;
    letter-spacing: -0.02em;
    cursor: default;
}

.glitch-heading .glitch-letter {
    display: inline-block;
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.glitch-heading.is-glitching {
    animation: glitch-shadow 0.12s steps(2, end) infinite;
}

@keyframes glitch-shadow {
    0% {
        text-shadow: 2px 0 var(--accent), -2px 0 var(--accent-2);
    }

    50% {
        text-shadow: -3px 0 var(--accent), 3px 0 var(--accent-2);
    }

    100% {
        text-shadow: 2px 0 var(--accent), -2px 0 var(--accent-2);
    }
}

.hero-tagline {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    color: var(--accent-2);
    margin: 0 0 1.5rem;
}

.hero-tagline .dot {
    color: var(--text-dim);
    margin: 0 0.4rem;
}

.hero-sub {
    color: var(--text-dim);
    font-size: 1.05rem;
    max-width: 520px;
    margin: 0 auto 2rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */

.btn {
    display: inline-block;
    appearance: none;
    padding: 0.9rem 1.7rem;
    border-radius: 0;
    font-family: var(--font-pixel);
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    line-height: 1.4;
    border: none;
    cursor: pointer;
    transition: transform 0.08s ease, box-shadow 0.08s ease;
}

.btn-primary {
    background: var(--btn-color, var(--accent));
    color: #0b0d12;
    box-shadow:
        inset -4px -4px 0 rgba(0, 0, 0, 0.35),
        inset 4px 4px 0 rgba(255, 255, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
}

.btn-primary:active {
    transform: translateY(1px);
    box-shadow:
        inset 4px 4px 0 rgba(0, 0, 0, 0.35),
        inset -4px -4px 0 rgba(255, 255, 255, 0.12);
}

.btn-ghost {
    background: var(--bg);
    color: var(--btn-color, var(--text));
    box-shadow:
        inset 0 0 0 3px var(--btn-color, var(--border)),
        inset -4px -4px 0 rgba(0, 0, 0, 0.3);
}

.btn-ghost:hover {
    background: var(--btn-color, var(--accent-2));
    color: #0b0d12;
    transform: translateY(-3px);
}

.btn-ghost:active {
    transform: translateY(1px);
    box-shadow:
        inset 0 0 0 3px var(--btn-color, var(--border)),
        inset 4px 4px 0 rgba(0, 0, 0, 0.3);
}

/* Sections */

main>section:not(#hero) {
    background: var(--bg-alt);
    padding: 4.5rem 1.5rem;
}

.section-card {
    position: relative;
    max-width: 1100px;
    margin: 0 auto;
    padding: 3rem 2.5rem;
    background: var(--surface);
    border: 3px solid var(--card-color, var(--border));
    box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.35);
}

.section-heading {
    text-align: center;
    margin-bottom: 3rem;
}

.section-heading h2 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    margin: 0;
    position: relative;
    padding-bottom: 1.1rem;
}

.section-heading h2::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 56px;
    height: 4px;
    background: var(--accent-2);
}

#about .eyebrow { color: var(--accent-3); }
#about .section-heading h2::after { background: var(--accent-3); }

#skills .eyebrow { color: var(--accent-4); }
#skills .section-heading h2::after { background: var(--accent-4); }

#projects .eyebrow { color: var(--accent-6); }
#projects .section-heading h2::after { background: var(--accent-6); }

#contact .eyebrow { color: var(--accent-5); }
#contact .section-heading h2::after { background: var(--accent-5); }

/* About */

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 3rem;
    align-items: center;
    max-width: 950px;
    margin: 0 auto;
}

.about-text {
    color: var(--text-dim);
    font-size: 1.05rem;
}

.about-text p {
    margin: 0 0 1.1rem;
}

.about-text p:last-child {
    margin-bottom: 0;
}

.avatar-frame {
    width: 100%;
    max-width: 240px;
    aspect-ratio: 1 / 1;
    margin: 0 auto;
    padding: 3px;
    background: var(--card-color, var(--accent));
}

.avatar-placeholder {
    width: 100%;
    height: 100%;
    background: var(--surface);
    overflow: hidden;
}

.avatar-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

@media (max-width: 720px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .avatar-frame {
        max-width: 180px;
    }
}

/* Skills */

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.skill-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
}

/* Terminal (Scripting card) */

.terminal {
    margin-top: 1.25rem;
    background: #0a0c10;
    border: 1px solid var(--border);
    overflow: hidden;
}

.terminal-bar {
    display: flex;
    gap: 6px;
    padding: 0.5rem 0.7rem;
    background: #14171f;
    border-bottom: 1px solid var(--border);
}

.terminal-bar span {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--border);
}

.terminal-bar span:nth-child(1) {
    background: #ff5f56;
}

.terminal-bar span:nth-child(2) {
    background: #ffbd2e;
}

.terminal-bar span:nth-child(3) {
    background: #27c93f;
}

.terminal-body {
    margin: 0;
    padding: 0.9rem 1rem 1.1rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    line-height: 1.6;
    color: #7ef7a4;
    white-space: pre-wrap;
    word-break: break-word;
    height: 10.5rem;
    overflow: hidden;
}

.terminal-cursor {
    color: var(--accent-2);
    animation: cursor-blink 0.9s steps(1) infinite;
}

@keyframes cursor-blink {

    0%,
    49% {
        opacity: 1;
    }

    50%,
    100% {
        opacity: 0;
    }
}

.skill-icon {
    width: 38px;
    height: 38px;
    margin-bottom: 1.1rem;
    color: var(--corner-color, var(--accent));
}

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

.skill-card h3 {
    margin: 0 0 0.5rem;
    font-size: 1.3rem;
}

.skill-card p {
    color: var(--text-dim);
    font-size: 0.95rem;
    margin: 0 0 1.25rem;
}

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

.skill-tags li {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-2);
    background: rgba(60, 201, 255, 0.08);
    border: 1px solid rgba(60, 201, 255, 0.25);
    padding: 0.25rem 0.6rem;
}

/* Projects filter bar */

.filter-bar {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
}

.filter-btn {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-dim);
    padding: 0.5rem 1.1rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-btn:hover {
    color: var(--text);
    border-color: var(--accent-2);
}

.filter-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #0b0d12;
}

/* Projects grid */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.75rem;
}

.project-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

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

.project-thumb {
    height: 170px;
    position: relative;
    overflow: hidden;
}

.project-thumb-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.project-body {
    padding: 1.5rem;
}

.project-tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--corner-color, var(--accent-2));
}

.project-body h3 {
    margin: 0.5rem 0;
    font-size: 1.15rem;
}

.project-body p {
    color: var(--text-dim);
    font-size: 0.9rem;
    margin: 0;
}

/* Contact */

.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-content p {
    color: var(--text-dim);
    margin-bottom: 2rem;
}

.contact-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Pixel accents */

.pixel-corners {
    background-repeat: no-repeat;
    background-image:
        linear-gradient(var(--corner-color, var(--accent)), var(--corner-color, var(--accent))),
        linear-gradient(var(--corner-color, var(--accent)), var(--corner-color, var(--accent))),
        linear-gradient(var(--corner-color, var(--accent)), var(--corner-color, var(--accent))),
        linear-gradient(var(--corner-color, var(--accent)), var(--corner-color, var(--accent))),
        linear-gradient(var(--corner-color, var(--accent)), var(--corner-color, var(--accent))),
        linear-gradient(var(--corner-color, var(--accent)), var(--corner-color, var(--accent))),
        linear-gradient(var(--corner-color, var(--accent)), var(--corner-color, var(--accent))),
        linear-gradient(var(--corner-color, var(--accent)), var(--corner-color, var(--accent)));
    background-size:
        14px 3px, 3px 14px,
        14px 3px, 3px 14px,
        14px 3px, 3px 14px,
        14px 3px, 3px 14px;
    background-position:
        top left, top left,
        top right, top right,
        bottom left, bottom left,
        bottom right, bottom right;
}

/* Footer */

footer {
    border-top: 1px solid var(--border);
    text-align: center;
    padding: 2rem 1.5rem;
    color: var(--text-dim);
    font-size: 0.85rem;
}

/* Reveal-on-scroll */

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */

@media (max-width: 720px) {
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-alt);
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        align-items: center;
        gap: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.25s ease;
    }

    .nav-links.open {
        max-height: 300px;
    }

    .nav-links li {
        width: 100%;
        text-align: center;
    }

    .nav-links a {
        display: block;
        padding: 1rem;
        border-top: 1px solid var(--border);
    }

    main>section:not(#hero) {
        padding: 3rem 1.25rem;
    }

    .section-card {
        padding: 2rem 1.5rem;
        box-shadow: 5px 5px 0 rgba(0, 0, 0, 0.35);
    }
}