:root {
    color-scheme: light;
    --bg: #f3f3ed;
    --bg-elevated: rgba(255, 255, 255, 0.72);
    --bg-solid: #ffffff;
    --text: #121212;
    --muted: #5a5a63;
    --subtle: #e5e5dc;
    --line: rgba(18, 18, 18, 0.12);
    --accent: #b8e620;
    --accent-ink: #121400;
    --accent-text: #55700a;
    --violet: #6d4cff;
    --violet-soft: rgba(109, 76, 255, 0.12);
    --glow: rgba(163, 210, 16, 0.30);
    --glow-violet: rgba(109, 76, 255, 0.18);
    --shadow: 0 24px 70px rgba(20, 22, 12, 0.14);
    --soft-shadow: 0 12px 36px rgba(20, 22, 12, 0.08);
    --radius: 14px;
    --radius-lg: 24px;
    --radius-pill: 999px;
    --container: 1160px;
    --header-height: 72px;
    --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
    --font-display: "Space Grotesk", "Inter", -apple-system, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
    --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

html[data-theme="dark"] {
    color-scheme: dark;
    --bg: #08080a;
    --bg-elevated: rgba(255, 255, 255, 0.035);
    --bg-solid: #121216;
    --text: #f2f2ee;
    --muted: #98989f;
    --subtle: #1b1b21;
    --line: rgba(255, 255, 255, 0.09);
    --accent: #d7ff3d;
    --accent-ink: #121400;
    --accent-text: #d7ff3d;
    --violet: #9d85ff;
    --violet-soft: rgba(157, 133, 255, 0.14);
    --glow: rgba(215, 255, 61, 0.14);
    --glow-violet: rgba(157, 133, 255, 0.16);
    --shadow: 0 24px 80px rgba(0, 0, 0, 0.55);
    --soft-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-width: 320px;
    overflow-x: hidden;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.8;
    letter-spacing: 0;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

/* film grain */
body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 999;
    pointer-events: none;
    opacity: 0.05;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

html[data-theme="dark"] body::after {
    opacity: 0.07;
}

img,
svg {
    display: block;
}

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

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

button,
input,
textarea {
    font: inherit;
    letter-spacing: 0;
}

button {
    cursor: pointer;
}

::selection {
    background: var(--accent);
    color: var(--accent-ink);
}

:focus-visible {
    outline: 2px solid var(--accent-text);
    outline-offset: 3px;
}

.cursor-glow {
    position: fixed;
    width: 520px;
    height: 520px;
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
    background: radial-gradient(circle, var(--glow) 0%, var(--glow-violet) 40%, transparent 70%);
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 400ms ease;
}

.cursor-glow.is-active {
    opacity: 1;
}

html[data-theme="light"] .cursor-glow.is-active {
    opacity: 0.5;
}

.skip-link {
    position: fixed;
    left: 16px;
    top: 16px;
    z-index: 1000;
    padding: 10px 16px;
    background: var(--accent);
    color: var(--accent-ink);
    font-weight: 700;
    border-radius: var(--radius-pill);
    transform: translateY(-160%);
    transition: transform 180ms ease;
}

.skip-link:focus {
    transform: translateY(0);
}

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

.section {
    position: relative;
    padding: 108px 0;
}

.section-soft {
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    background:
        radial-gradient(ellipse 70% 80% at 85% 10%, var(--violet-soft), transparent 60%),
        radial-gradient(ellipse 60% 70% at 10% 90%, var(--glow), transparent 55%);
    background-color: color-mix(in srgb, var(--bg-solid) 40%, var(--bg));
}

.section-heading {
    max-width: 760px;
    margin-bottom: 40px;
}

.section-heading h2,
.page-hero h1,
.cta-inner h2 {
    margin: 0;
    font-family: var(--font-display);
    font-size: clamp(2rem, 3.6vw, 2.9rem);
    line-height: 1.18;
    font-weight: 700;
    letter-spacing: -0.03em;
    overflow-wrap: anywhere;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin: 0 0 14px;
    color: var(--accent-text);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.22em;
    text-transform: uppercase;
}

.eyebrow::before {
    content: "";
    width: 9px;
    height: 9px;
    background: var(--accent);
    box-shadow: 0 0 14px var(--glow);
}

.lead {
    max-width: 760px;
    margin: 20px 0 0;
    color: var(--muted);
    font-size: 1.15rem;
}

.text-stack p,
.content-panel p,
.contact-aside p {
    margin: 0;
    color: var(--muted);
}

.card {
    position: relative;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--bg-elevated);
    box-shadow: var(--soft-shadow);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: border-color 280ms ease, box-shadow 280ms ease, transform 280ms ease;
}

.card:hover {
    border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
    box-shadow: var(--shadow), 0 0 40px var(--glow);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-height);
    border-bottom: 1px solid transparent;
    transition: background-color 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.site-header.is-scrolled {
    border-color: var(--line);
    background: color-mix(in srgb, var(--bg) 74%, transparent);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
}

.nav-shell {
    width: min(calc(100% - 32px), var(--container));
    height: 100%;
    margin-inline: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex: 1 1 auto;
    min-width: 0;
    font-family: var(--font-display);
    font-weight: 700;
    letter-spacing: -0.01em;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 38px;
    aspect-ratio: 1;
    border: none;
    border-radius: 12px;
    background: var(--accent);
    color: var(--accent-ink);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 800;
    box-shadow: 0 4px 18px var(--glow);
}

.brand-text {
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.nav-panel {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-panel a {
    position: relative;
    padding: 8px 14px;
    border-radius: var(--radius-pill);
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 600;
    transition: color 160ms ease, background-color 160ms ease;
}

.nav-panel a:hover {
    color: var(--text);
    background: color-mix(in srgb, var(--text) 6%, transparent);
}

.nav-panel a.is-active {
    color: var(--accent-ink);
    background: var(--accent);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    order: 3;
}

.icon-button {
    position: relative;
    display: grid;
    place-items: center;
    width: 42px;
    aspect-ratio: 1;
    border: 1px solid var(--line);
    border-radius: var(--radius-pill);
    background: var(--bg-elevated);
    color: var(--text);
    transition: border-color 160ms ease, box-shadow 160ms ease;
}

.icon-button:hover {
    border-color: color-mix(in srgb, var(--accent) 50%, var(--line));
    box-shadow: 0 0 16px var(--glow);
}

.theme-toggle {
    overflow: hidden;
}

.theme-sun,
.theme-moon {
    position: absolute;
    width: 18px;
    aspect-ratio: 1;
    border-radius: 50%;
    transition: transform 180ms ease, opacity 180ms ease;
}

.theme-sun {
    border: 2px solid currentColor;
    box-shadow: 0 0 0 5px var(--glow);
}

.theme-moon {
    background: currentColor;
    box-shadow: inset -6px -3px 0 var(--bg-solid);
    transform: translateY(22px);
    opacity: 0;
}

html[data-theme="dark"] .theme-sun {
    transform: translateY(-22px);
    opacity: 0;
}

html[data-theme="dark"] .theme-moon {
    transform: translateY(0);
    opacity: 1;
}

.menu-toggle {
    display: none;
}

.menu-toggle span {
    position: absolute;
    width: 18px;
    height: 2px;
    border-radius: 999px;
    background: currentColor;
    transition: transform 180ms ease;
}

.menu-toggle span:first-child {
    transform: translateY(-4px);
}

.menu-toggle span:last-child {
    transform: translateY(4px);
}

.menu-toggle.is-open span:first-child {
    transform: rotate(45deg);
}

.menu-toggle.is-open span:last-child {
    transform: rotate(-45deg);
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    min-height: 50px;
    padding: 0 24px;
    border: 1px solid transparent;
    border-radius: var(--radius-pill);
    font-size: 0.95rem;
    font-weight: 700;
    white-space: nowrap;
    transition: transform 160ms ease, border-color 160ms ease, background-color 160ms ease, box-shadow 160ms ease;
}

.button svg {
    width: 18px;
    height: 18px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.button-primary {
    background: var(--accent);
    color: var(--accent-ink);
    box-shadow: 0 8px 30px var(--glow), 0 2px 8px rgba(0, 0, 0, 0.12);
    border: none;
}

.button-primary:hover {
    box-shadow: 0 12px 44px var(--glow), 0 0 60px var(--glow);
}

.button-secondary,
.button-ghost {
    border-color: var(--line);
    background: transparent;
    color: var(--text);
}

.button-secondary:hover,
.button-ghost:hover {
    border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
    box-shadow: 0 0 24px var(--glow);
}

.button-small {
    min-height: 38px;
    padding: 0 16px;
    font-size: 0.86rem;
}

.button:hover {
    transform: translateY(-2px);
}

.hero {
    min-height: calc(100vh - 116px);
    min-height: calc(100svh - 116px);
    display: grid;
    align-items: center;
    overflow: hidden;
    padding: 90px 0 84px;
}

/* blueprint grid lines */
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(var(--line) 1px, transparent 1px),
        linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 72px 72px;
    mask-image: radial-gradient(ellipse 90% 80% at 50% 0%, #000 30%, transparent 78%);
    -webkit-mask-image: radial-gradient(ellipse 90% 80% at 50% 0%, #000 30%, transparent 78%);
    pointer-events: none;
}

.hero-bg {
    position: absolute;
    inset: -30%;
    background:
        radial-gradient(ellipse 46% 42% at 24% 32%, var(--glow), transparent),
        radial-gradient(ellipse 44% 52% at 78% 62%, var(--glow-violet), transparent),
        radial-gradient(ellipse 30% 30% at 62% 16%, var(--glow), transparent);
    animation: hero-flow 24s ease-in-out infinite alternate;
    filter: blur(70px);
}

.hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent, var(--bg) 96%);
    pointer-events: none;
}

.hero-inner {
    position: relative;
    z-index: 1;
    max-width: 980px;
}

.hero-title {
    margin: 0;
    font-family: var(--font-display);
    line-height: 1;
}

.hero-title span {
    display: block;
    font-size: clamp(3rem, 8vw, 5.6rem);
    font-weight: 700;
    letter-spacing: -0.045em;
    overflow-wrap: anywhere;
}

.hero-title strong {
    display: block;
    margin-top: 16px;
    color: transparent;
    background: linear-gradient(100deg, var(--accent-text), var(--violet) 60%, var(--accent-text));
    background-size: 200% 100%;
    background-clip: text;
    -webkit-background-clip: text;
    font-size: clamp(1.5rem, 3.6vw, 2.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    overflow-wrap: anywhere;
    animation: gradient-shift 7s ease-in-out infinite alternate;
}

@keyframes gradient-shift {
    from { background-position: 0% 50%; }
    to { background-position: 100% 50%; }
}

.hero-copy {
    max-width: 680px;
    margin: 30px 0 0;
    color: var(--muted);
    font-size: 1.18rem;
    overflow-wrap: anywhere;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 36px;
}

.hero-metrics {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    max-width: 720px;
    margin-top: 52px;
}

.hero-metrics div {
    position: relative;
    padding: 20px 22px;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--bg-elevated);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    overflow: hidden;
    transition: border-color 280ms ease, box-shadow 280ms ease, transform 280ms ease;
}

.hero-metrics div::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 3px;
    height: 100%;
    background: linear-gradient(180deg, var(--accent), var(--violet));
    opacity: 0;
    transition: opacity 280ms ease;
}

.hero-metrics div:hover {
    border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
    box-shadow: 0 8px 30px var(--glow);
    transform: translateY(-4px);
}

.hero-metrics div:hover::before {
    opacity: 1;
}

.hero-metrics strong {
    display: block;
    font-family: var(--font-display);
    font-size: 1.3rem;
    letter-spacing: -0.02em;
}

.hero-metrics span {
    display: block;
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.split-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1fr);
    gap: 64px;
    align-items: start;
}

.text-stack {
    display: grid;
    gap: 22px;
}

.text-link {
    color: var(--accent-text);
    font-weight: 700;
}

.text-link::after {
    content: " \2197";
    font-family: var(--font-mono);
}

.text-link:hover {
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 5px;
}

.skill-category-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.skill-category {
    min-width: 0;
    padding: 24px;
}

.category-heading {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--line);
}

.category-heading h3 {
    margin: 0;
    font-family: var(--font-display);
    font-size: 1.1rem;
    letter-spacing: -0.01em;
}

.icon-badge {
    display: grid;
    place-items: center;
    width: 44px;
    aspect-ratio: 1;
    border-radius: 14px;
    background: var(--accent);
    color: var(--accent-ink);
    box-shadow: 0 4px 18px var(--glow);
}

.icon-badge svg {
    width: 22px;
    height: 22px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.skill-list {
    display: grid;
    gap: 18px;
}

.skill-item {
    display: grid;
    gap: 8px;
}

.skill-title {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    font-weight: 700;
}

.skill-title span {
    min-width: 0;
    overflow-wrap: anywhere;
}

.skill-title strong {
    flex: 0 0 auto;
    color: var(--accent-text);
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.skill-item p {
    margin: 0;
    color: var(--muted);
    font-size: 0.92rem;
}

.skill-bar {
    height: 6px;
    overflow: hidden;
    border-radius: 999px;
    background: color-mix(in srgb, var(--subtle) 84%, transparent);
}

.skill-bar span {
    display: block;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--accent), var(--violet));
    box-shadow: 0 0 12px var(--glow);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 900ms cubic-bezier(0.22, 1, 0.36, 1);
}

.skill-bar.is-animated span {
    transform: scaleX(1);
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.preview-grid {
    margin-top: 10px;
}

.project-card {
    min-width: 0;
    overflow: hidden;
    border-radius: var(--radius-lg);
    transform-style: preserve-3d;
    transition: transform 320ms cubic-bezier(0.22, 1, 0.36, 1), box-shadow 320ms ease, border-color 320ms ease;
}

.project-card:hover {
    border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
    box-shadow: var(--shadow), 0 0 50px var(--glow);
    transform: translateY(-6px);
}

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

.project-media {
    display: block;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--subtle);
    border-bottom: 1px solid var(--line);
}

.project-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 320ms ease;
}

.project-card:hover .project-media img {
    transform: scale(1.04);
}

.project-body {
    padding: 22px;
}

.project-topline {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.project-body h3 {
    margin: 0 0 10px;
    font-family: var(--font-display);
    font-size: 1.18rem;
    line-height: 1.35;
    letter-spacing: -0.01em;
    overflow-wrap: anywhere;
}

.project-body p {
    margin: 0;
    color: var(--muted);
    font-size: 0.94rem;
    overflow-wrap: anywhere;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.tag-list span {
    display: inline-flex;
    align-items: center;
    max-width: 100%;
    min-height: 26px;
    padding: 0 10px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: color-mix(in srgb, var(--text) 4%, transparent);
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    overflow-wrap: anywhere;
    transition: background 200ms ease, border-color 200ms ease, color 200ms ease;
}

.tag-list span:hover {
    border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
    color: var(--accent-text);
}

.project-meta {
    display: grid;
    gap: 10px;
    margin: 18px 0 0;
}

.project-meta div {
    display: grid;
    gap: 3px;
}

.project-meta dt {
    color: var(--accent-text);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.project-meta dd {
    margin: 0;
    color: var(--muted);
    font-size: 0.9rem;
    overflow-wrap: anywhere;
}

.project-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}

.section-action {
    display: flex;
    justify-content: center;
    margin-top: 38px;
}

.page-hero {
    position: relative;
    overflow: hidden;
    padding: 118px 0 72px;
    background:
        radial-gradient(ellipse 50% 60% at 20% 40%, var(--glow), transparent 70%),
        radial-gradient(ellipse 40% 50% at 80% 60%, var(--glow-violet), transparent 70%);
}

.page-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(var(--line) 1px, transparent 1px),
        linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 72px 72px;
    mask-image: radial-gradient(ellipse 90% 100% at 50% 0%, #000 20%, transparent 74%);
    -webkit-mask-image: radial-gradient(ellipse 90% 100% at 50% 0%, #000 20%, transparent 74%);
    pointer-events: none;
}

.page-hero-inner {
    position: relative;
    max-width: 900px;
}

.page-hero-inner.narrow {
    max-width: 760px;
}

.about-grid {
    display: grid;
    grid-template-columns: 320px minmax(0, 1fr);
    gap: 28px;
    align-items: start;
}

.profile-card {
    position: sticky;
    top: calc(var(--header-height) + 24px);
    padding: 26px;
}

.profile-avatar {
    display: grid;
    place-items: center;
    width: 92px;
    aspect-ratio: 1;
    margin-bottom: 20px;
    border-radius: 22px;
    background: var(--accent);
    color: var(--accent-ink);
    font-family: var(--font-mono);
    font-size: 1.35rem;
    font-weight: 800;
    box-shadow: 0 8px 30px var(--glow);
}

.profile-card h2 {
    margin: 0 0 4px;
    font-family: var(--font-display);
    font-size: 1.45rem;
    letter-spacing: -0.02em;
}

.profile-card p {
    margin: 0 0 20px;
    color: var(--muted);
}

.profile-card dl {
    display: grid;
    gap: 14px;
    margin: 0;
}

.profile-card dl div {
    padding-top: 14px;
    border-top: 1px solid var(--line);
}

.profile-card dt {
    color: var(--accent-text);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.profile-card dd {
    margin: 2px 0 0;
    color: var(--muted);
    overflow-wrap: anywhere;
}

.about-content {
    display: grid;
    gap: 20px;
}

.content-panel {
    padding: 24px 0;
    border-bottom: 1px solid var(--line);
}

.content-panel:first-child {
    padding-top: 0;
}

.content-panel h2 {
    margin: 0 0 12px;
    font-family: var(--font-display);
    font-size: 1.7rem;
    letter-spacing: -0.02em;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.feature-grid article {
    min-width: 0;
    padding: 20px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--bg-elevated);
    transition: border-color 240ms ease, box-shadow 240ms ease;
}

.feature-grid article:hover {
    border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
    box-shadow: 0 0 24px var(--glow);
}

.feature-grid h3 {
    margin: 0 0 8px;
    font-family: var(--font-display);
    font-size: 1rem;
}

.feature-grid p {
    font-size: 0.92rem;
}

.project-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 28px;
    padding: 16px;
}

.search-field {
    position: relative;
    min-width: 0;
    flex: 1 1 320px;
}

.search-field svg {
    position: absolute;
    left: 16px;
    top: 50%;
    width: 18px;
    height: 18px;
    fill: none;
    stroke: var(--muted);
    stroke-width: 2;
    transform: translateY(-50%);
    pointer-events: none;
}

.search-field input {
    width: 100%;
    height: 46px;
    border: 1px solid var(--line);
    border-radius: var(--radius-pill);
    background: var(--bg-solid);
    color: var(--text);
    font-size: 1rem;
    padding: 0 16px 0 44px;
    transition: border-color 160ms ease, box-shadow 160ms ease;
}

.search-field input:focus {
    border-color: color-mix(in srgb, var(--accent) 60%, var(--line));
    box-shadow: 0 0 0 4px var(--glow);
    outline: none;
}

.filter-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.filter-button {
    height: 38px;
    padding: 0 16px;
    border: 1px solid var(--line);
    border-radius: var(--radius-pill);
    background: transparent;
    color: var(--muted);
    font-size: 0.86rem;
    font-weight: 700;
    transition: all 200ms ease;
}

.filter-button:hover {
    border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
    color: var(--text);
    box-shadow: 0 0 16px var(--glow);
}

.filter-button.is-active {
    border-color: var(--accent);
    background: var(--accent);
    color: var(--accent-ink);
    box-shadow: 0 0 20px var(--glow);
}

.empty-state {
    margin: 28px 0 0;
    padding: 24px;
    border: 1px dashed var(--line);
    border-radius: var(--radius-lg);
    color: var(--muted);
    text-align: center;
}

.timeline {
    position: relative;
    display: grid;
    gap: 18px;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 122px;
    top: 8px;
    bottom: 8px;
    width: 1px;
    background: linear-gradient(180deg, var(--accent), var(--violet), transparent);
    opacity: 0.5;
}

.timeline-item {
    position: relative;
    min-width: 0;
    display: grid;
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 34px;
    padding: 24px;
}

.timeline-item::before {
    content: "";
    position: absolute;
    left: 116px;
    top: 32px;
    width: 13px;
    aspect-ratio: 1;
    border: 3px solid var(--bg);
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 1px var(--line), 0 0 16px var(--glow);
}

.timeline-item time {
    color: var(--accent-text);
    font-family: var(--font-mono);
    font-size: 0.92rem;
    font-weight: 700;
}

.timeline-item h2 {
    margin: 0 0 10px;
    font-family: var(--font-display);
    font-size: 1.28rem;
    letter-spacing: -0.01em;
}

.timeline-item p {
    margin: 0;
    color: var(--muted);
}

.check-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 16px 0 0;
    padding: 0;
    list-style: none;
}

.check-list li {
    max-width: 100%;
    padding: 5px 11px;
    border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--line));
    border-radius: 6px;
    background: color-mix(in srgb, var(--accent) 10%, transparent);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 600;
    overflow-wrap: anywhere;
}

.contact-single {
    max-width: 560px;
}

.contact-layout {
    display: grid;
    grid-template-columns: 0.72fr 1fr;
    gap: 24px;
    align-items: start;
}

.contact-aside,
.contact-form {
    min-width: 0;
    padding: 26px;
}

.contact-aside h2 {
    margin: 0 0 14px;
    font-family: var(--font-display);
    font-size: 1.65rem;
    line-height: 1.35;
    letter-spacing: -0.02em;
}

.contact-mail-card h2 {
    margin: 0;
    font-family: var(--font-display);
    font-size: 1.55rem;
    line-height: 1.35;
    letter-spacing: -0.02em;
}

.contact-mail-card p:not(.eyebrow) {
    margin: 0;
    color: var(--muted);
}

.contact-note {
    display: grid;
    gap: 4px;
    margin-top: 24px;
    padding-top: 18px;
    border-top: 1px solid var(--line);
}

.contact-note strong {
    color: var(--accent-text);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.contact-note span {
    color: var(--muted);
    overflow-wrap: anywhere;
}

.contact-form {
    display: grid;
    gap: 18px;
}

.form-field {
    display: grid;
    gap: 7px;
}

.form-field label {
    font-size: 0.9rem;
    font-weight: 700;
}

.form-field input,
.form-field textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--bg-solid);
    color: var(--text);
    font-size: 1rem;
    padding: 13px 16px;
    transition: border-color 160ms ease, box-shadow 160ms ease;
}

.form-field textarea {
    resize: vertical;
    min-height: 180px;
}

.form-field input:focus,
.form-field textarea:focus {
    border-color: color-mix(in srgb, var(--accent) 60%, var(--line));
    box-shadow: 0 0 0 4px var(--glow);
    outline: none;
}

.field-error,
.form-alert {
    margin: 0;
    color: #c53b2d;
    font-size: 0.88rem;
}

html[data-theme="dark"] .field-error,
html[data-theme="dark"] .form-alert {
    color: #ff9b8c;
}

.form-alert {
    padding: 12px 14px;
    border: 1px solid rgba(238, 111, 87, 0.35);
    border-radius: var(--radius);
    background: rgba(238, 111, 87, 0.10);
}

.form-submit {
    justify-self: start;
}

.honeypot {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.cta-section {
    padding-top: 72px;
}

.cta-inner {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 24px;
    padding: 48px;
    border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--line));
    border-radius: var(--radius-lg);
    background:
        radial-gradient(ellipse 60% 90% at 85% 20%, var(--glow-violet), transparent 60%),
        radial-gradient(ellipse 50% 90% at 10% 90%, var(--glow), transparent 55%),
        var(--bg-elevated);
    box-shadow: var(--soft-shadow), 0 0 60px var(--glow);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    overflow: hidden;
}

.cta-inner::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(var(--line) 1px, transparent 1px),
        linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse 80% 100% at 100% 0%, #000, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 80% 100% at 100% 0%, #000, transparent 70%);
    pointer-events: none;
}

.cta-copy {
    position: relative;
    min-width: 0;
    max-width: 780px;
}

.cta-copy h2 {
    overflow-wrap: anywhere;
}

.cta-button {
    position: relative;
    flex: 0 0 auto;
    justify-self: end;
    width: fit-content;
    max-width: 100%;
    white-space: nowrap;
}

.site-footer {
    position: relative;
    border-top: 1px solid var(--line);
    padding: 34px 0;
    background: var(--bg);
}

.footer-inner {
    width: min(calc(100% - 40px), var(--container));
    margin-inline: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-links a,
.copyright {
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 0.82rem;
}

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

.copyright {
    margin: 0;
}

.back-to-top {
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 80;
    display: grid;
    place-items: center;
    width: 46px;
    aspect-ratio: 1;
    border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--line));
    border-radius: var(--radius-pill);
    background: var(--bg-elevated);
    color: var(--text);
    box-shadow: var(--soft-shadow), 0 0 20px var(--glow);
    opacity: 0;
    pointer-events: none;
    transform: translateY(12px);
    transition: opacity 280ms ease, transform 280ms ease;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.back-to-top.is-visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.back-to-top:hover {
    border-color: var(--accent);
}

.back-to-top svg {
    width: 22px;
    height: 22px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 700ms cubic-bezier(0.22, 1, 0.36, 1), transform 700ms cubic-bezier(0.22, 1, 0.36, 1);
}

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

.tilt-card {
    transform: perspective(900px) rotateX(var(--tilt-x, 0deg)) rotateY(var(--tilt-y, 0deg));
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@keyframes hero-flow {
    from {
        transform: translate3d(-4%, -2%, 0) scale(1) rotate(0deg);
    }
    to {
        transform: translate3d(4%, 2%, 0) scale(1.06) rotate(2deg);
    }
}

@media (max-width: 1040px) {
    .skill-category-grid,
    .project-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

@media (max-width: 860px) {
    :root {
        --header-height: 66px;
    }

    .section {
        padding: 76px 0;
    }

    .section-heading h2,
    .page-hero h1,
    .cta-inner h2 {
        font-size: 2rem;
    }

    .hero {
        min-height: auto;
        padding-top: 88px;
    }

    .hero-title span {
        font-size: 3.1rem;
    }

    .hero-title strong {
        font-size: 1.7rem;
    }

    .hero-metrics,
    .split-layout,
    .about-grid,
    .contact-layout {
        grid-template-columns: 1fr;
    }

    .profile-card {
        position: static;
    }

    .project-toolbar {
        align-items: stretch;
        flex-direction: column;
    }

    .timeline::before,
    .timeline-item::before {
        display: none;
    }

    .timeline-item {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .cta-inner,
    .footer-inner {
        align-items: flex-start;
    }

    .footer-inner {
        flex-direction: column;
    }

    .cta-inner {
        grid-template-columns: 1fr;
        padding: 32px;
    }

    .cta-button {
        justify-self: start;
        width: fit-content;
    }

    .menu-toggle {
        display: grid;
    }

    .nav-panel {
        position: fixed;
        top: calc(var(--header-height) + 8px);
        left: 16px;
        right: 16px;
        display: grid;
        gap: 6px;
        padding: 12px;
        border: 1px solid var(--line);
        border-radius: var(--radius-lg);
        background: color-mix(in srgb, var(--bg) 86%, transparent);
        box-shadow: var(--shadow);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: opacity 160ms ease, visibility 160ms ease, transform 160ms ease;
        backdrop-filter: blur(24px);
        -webkit-backdrop-filter: blur(24px);
    }

    .nav-panel.is-open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .nav-panel a {
        padding: 12px 16px;
        border-radius: var(--radius);
    }
}

@media (max-width: 640px) {
    .container,
    .footer-inner {
        width: min(calc(100% - 28px), var(--container));
    }

    .nav-shell {
        width: min(calc(100% - 24px), var(--container));
        gap: 10px;
    }

    .brand {
        max-width: calc(100% - 98px);
    }

    .brand-mark {
        width: 34px;
    }

    .brand-text {
        max-width: 100%;
    }

    .icon-button {
        width: 40px;
    }

    .section {
        padding: 64px 0;
    }

    .page-hero {
        padding: 88px 0 52px;
    }

    .section-heading {
        margin-bottom: 26px;
    }

    .section-heading h2,
    .page-hero h1 {
        font-size: 1.78rem;
        line-height: 1.3;
    }

    .hero-title span {
        font-size: 2.3rem;
        line-height: 1.08;
    }

    .hero-title strong {
        font-size: 1.26rem;
        line-height: 1.36;
    }

    .hero-copy,
    .lead {
        font-size: 1rem;
    }

    .hero-actions,
    .filter-group,
    .section-action {
        width: 100%;
    }

    .hero-actions .button,
    .section-action .button,
    .project-actions .button,
    .filter-button,
    .form-submit {
        width: 100%;
    }

    .project-actions {
        flex-direction: column;
    }

    .project-toolbar {
        padding: 12px;
    }

    .search-field {
        flex-basis: auto;
    }

    .filter-group {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .cta-inner {
        gap: 18px;
        padding: 24px;
    }

    .cta-inner h2 {
        font-size: 1.5rem;
        line-height: 1.38;
    }

    .cta-button {
        justify-self: stretch;
        width: 100%;
    }

    .hero-metrics,
    .skill-category-grid,
    .project-grid {
        grid-template-columns: 1fr;
    }

    .skill-category,
    .project-body,
    .contact-aside,
    .contact-form,
    .timeline-item {
        padding: 18px;
    }

    .contact-form {
        gap: 16px;
    }

    .form-field textarea {
        min-height: 150px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}