/* ─── seed tokens ─────────────────────────────────────────────── */
:root {
    /* dark theme (default) */
    --seed-bg: #0b0b0b;
    --seed-surface: #141414;
    --seed-fg: #e8e8e8;
    --seed-muted: #787878;
    --seed-border: rgba(255, 255, 255, 0.07);
    --seed-accent: #14b8a6;
    --seed-radius: 8px;

    /* light theme overrides */
    --light-bg: #f7f7f5;
    --light-surface: #ffffff;
    --light-fg: #171717;
    --light-muted: #666666;
    --light-border: rgba(0, 0, 0, 0.08);
    --light-accent: #0d9488;

    /* derived */
    --accent-soft: color-mix(in oklch, var(--seed-accent) 14%, transparent);
    --fg-soft: color-mix(in oklch, var(--seed-fg) 5%, transparent);

    /* language color tokens */
    --lang-python: #3572a5;
    --lang-dart: #00b4ab;
    --lang-html: #e34c26;

    --font-display: 'Instrument Serif', Iowan Old Style, Charter, Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

    --fs-hero: clamp(56px, 8vw, 96px);
    --fs-h1: clamp(40px, 5vw, 64px);
    --fs-h2: clamp(28px, 3.5vw, 40px);
    --fs-h3: 20px;
    --fs-lead: 18px;
    --fs-body: 16px;
    --fs-small: 14px;
    --fs-meta: 13px;
    --fs-caption: 12px;

    --gap-xs: 4px;
    --gap-sm: 8px;
    --gap-md: 16px;
    --gap-lg: 24px;
    --gap-xl: 40px;
    --gap-2xl: 64px;
    --gap-3xl: 96px;

    --container: 1080px;
    --gutter: 24px;
    --radius: var(--seed-radius);
    --radius-lg: 12px;
    --radius-pill: 999px;
}

@media (prefers-color-scheme: light) {
    :root:not([data-theme="dark"]):not([data-theme="light"]) {
        --seed-bg: var(--light-bg);
        --seed-surface: var(--light-surface);
        --seed-fg: var(--light-fg);
        --seed-muted: var(--light-muted);
        --seed-border: var(--light-border);
        --seed-accent: var(--light-accent);
        --accent-soft: color-mix(in oklch, var(--seed-accent) 14%, transparent);
        --fg-soft: color-mix(in oklch, var(--seed-fg) 4%, transparent);
    }
}

[data-theme="light"] {
    --seed-bg: var(--light-bg);
    --seed-surface: var(--light-surface);
    --seed-fg: var(--light-fg);
    --seed-muted: var(--light-muted);
    --seed-border: var(--light-border);
    --seed-accent: var(--light-accent);
    --accent-soft: color-mix(in oklch, var(--seed-accent) 14%, transparent);
    --fg-soft: color-mix(in oklch, var(--seed-fg) 4%, transparent);
}

/* ─── reset ──────────────────────────────────────────────────── */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 72px;
    -webkit-text-size-adjust: 100%;
}

body {
    background: var(--seed-bg);
    color: var(--seed-fg);
    font-family: var(--font-body);
    font-size: var(--fs-body);
    line-height: 1.55;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background 0.3s ease, color 0.3s ease;
}

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

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

button {
    font: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

p {
    text-wrap: pretty;
}

h1,
h2,
h3,
h4 {
    text-wrap: balance;
}

::selection {
    background: color-mix(in oklch, var(--seed-accent) 30%, transparent);
    color: var(--seed-fg);
}

/* ─── layout ─────────────────────────────────────────────────── */
.container {
    max-width: var(--container);
    margin-inline: auto;
    padding-inline: var(--gutter);
}

/* ─── typography ─────────────────────────────────────────────── */
.display {
    font-family: var(--font-display);
    font-size: var(--fs-hero);
    line-height: 1.0;
    letter-spacing: -0.025em;
    font-weight: 400;
    font-feature-settings: "liga";
}

.h1 {
    font-family: var(--font-display);
    font-size: var(--fs-h1);
    line-height: 1.1;
    letter-spacing: -0.02em;
    font-weight: 400;
}

.h2 {
    font-family: var(--font-display);
    font-size: var(--fs-h2);
    line-height: 1.15;
    letter-spacing: -0.015em;
    font-weight: 400;
}

.h3 {
    font-family: var(--font-display);
    font-size: var(--fs-h3);
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.01em;
}

.lead {
    font-size: var(--fs-lead);
    line-height: 1.6;
    color: var(--seed-muted);
    max-width: 55ch;
}

.eyebrow {
    font-family: var(--font-mono);
    font-size: var(--fs-caption);
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--seed-accent);
}

.meta {
    font-family: var(--font-mono);
    font-size: var(--fs-meta);
    color: var(--seed-muted);
}

.small {
    font-size: var(--fs-small);
    color: var(--seed-muted);
}

/* ─── navigation ─────────────────────────────────────────────── */
.topnav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: color-mix(in oklch, var(--seed-bg) 85%, transparent);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--seed-border);
}

.topnav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-block: 14px;
}

.topnav-brand {
    font-family: var(--font-mono);
    font-size: 15px;
    font-weight: 500;
    letter-spacing: -0.02em;
}

.topnav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}

.topnav-links a {
    font-size: var(--fs-small);
    font-weight: 500;
    color: var(--seed-muted);
    transition: color 0.15s ease;
}

.topnav-links a:hover,
.topnav-links a.active {
    color: var(--seed-fg);
}

.theme-toggle {
    width: 32px;
    height: 32px;
    display: grid;
    place-items: center;
    border-radius: var(--radius);
    color: var(--seed-muted);
    transition: color 0.15s ease, background 0.15s ease;
}

.theme-toggle:hover {
    color: var(--seed-fg);
    background: var(--fg-soft);
}

.theme-toggle svg {
    width: 16px;
    height: 16px;
}

.theme-toggle .icon-sun {
    display: none;
}

.theme-toggle .icon-moon {
    display: block;
}

[data-theme="light"] .theme-toggle .icon-sun {
    display: block;
}

[data-theme="light"] .theme-toggle .icon-moon {
    display: none;
}

.mobile-menu-btn {
    display: none;
    width: 32px;
    height: 32px;
    place-items: center;
    color: var(--seed-fg);
}

/* ─── language switcher ──────────────────────────────────────── */
.lang-select {
    font-family: var(--font-body);
    font-size: var(--fs-small);
    font-weight: 500;
    color: var(--seed-muted);
    background: transparent;
    border: none;
    outline: none;
    cursor: pointer;
    padding: 4px 20px 4px 8px;
    border-radius: var(--radius);
    transition: color 0.15s ease, background 0.15s ease;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' fill='none'%3E%3Cpath stroke='%23787878' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round' d='M1 1l4 4 4-4'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 6px center;
    background-size: 10px 6px;
}

.lang-select:hover {
    color: var(--seed-fg);
    background-color: var(--fg-soft);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' fill='none'%3E%3Cpath stroke='%23e8e8e8' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round' d='M1 1l4 4 4-4'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 6px center;
    background-size: 10px 6px;
}

[data-theme="light"] .lang-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' fill='none'%3E%3Cpath stroke='%23666666' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round' d='M1 1l4 4 4-4'/%3E%3C/svg%3E");
}

.lang-select option {
    background: var(--seed-surface);
    color: var(--seed-fg);
}

/* ─── hero ────────────────────────────────────────────────────── */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
}

.hero-content {
    max-width: 640px;
    margin-left: 25vw;
    width: 100%;
}

.hero-label {
    margin-bottom: var(--gap-lg);
}

.hero-name {
    margin-bottom: var(--gap-md);
}

.hero-tagline {
    margin-bottom: var(--gap-xl);
}

.hero-actions {
    display: flex;
    gap: var(--gap-sm);
    flex-wrap: wrap;
}

.hero-accent {
    width: 40px;
    height: 2px;
    background: var(--seed-accent);
    margin-top: var(--gap-2xl);
    border-radius: 1px;
}

/* ─── buttons ─────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: var(--fs-small);
    font-weight: 500;
    border-radius: var(--radius);
    transition: all 0.15s ease;
    letter-spacing: 0.01em;
}

.btn svg {
    width: 15px;
    height: 15px;
}

.btn-primary {
    background: var(--seed-accent);
    color: color-mix(in oklch, var(--seed-accent) 5%, white);
}

.btn-primary:hover {
    background: color-mix(in oklch, var(--seed-accent) 85%, black);
}

.btn-secondary {
    color: var(--seed-fg);
    border: 1px solid var(--seed-border);
}

.btn-secondary:hover {
    border-color: color-mix(in oklch, var(--seed-fg) 30%, transparent);
}

.btn-ghost {
    color: var(--seed-muted);
    padding-inline: 12px;
}

.btn-ghost:hover {
    color: var(--seed-fg);
}

/* ─── sections ────────────────────────────────────────────────── */
.section {
    padding-block: var(--gap-3xl);
    border-top: 1px solid var(--seed-border);
}

.section-header {
    margin-bottom: var(--gap-2xl);
}

.section-header .eyebrow {
    margin-bottom: var(--gap-md);
}

/* ─── about ───────────────────────────────────────────────────── */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--gap-2xl);
    align-items: start;
}

.about-bio p {
    color: var(--seed-muted);
    font-size: var(--fs-lead);
    line-height: 1.7;
    margin-bottom: var(--gap-md);
}

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

.about-stats {
    display: flex;
    flex-direction: column;
    gap: var(--gap-lg);
}

.stat-item {
    padding-bottom: var(--gap-lg);
    border-bottom: 1px solid var(--seed-border);
}

.stat-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 36px;
    line-height: 1;
    letter-spacing: -0.02em;
    font-feature-settings: "liga";
    margin-bottom: var(--gap-xs);
}

.stat-label {
    font-size: var(--fs-small);
    color: var(--seed-muted);
}

/* ─── projects ────────────────────────────────────────────────── */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--gap-lg);
}

.project-card {
    padding: var(--gap-lg);
    border: 1px solid var(--seed-border);
    border-radius: var(--radius-lg);
    transition: border-color 0.2s ease, transform 0.2s ease;
    cursor: pointer;
    display: block;
    text-decoration: none;
    color: inherit;
}

.project-card:hover {
    border-color: color-mix(in oklch, var(--seed-accent) 40%, transparent);
    transform: translateY(-2px);
}

.project-name {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: var(--gap-sm);
    display: flex;
    align-items: center;
    gap: var(--gap-sm);
}

.project-name svg {
    width: 16px;
    height: 16px;
    color: var(--seed-muted);
    flex-shrink: 0;
    transition: color 0.15s ease;
}

.project-card:hover .project-name svg {
    color: var(--seed-accent);
}

.project-desc {
    font-size: var(--fs-small);
    color: var(--seed-muted);
    line-height: 1.55;
    margin-bottom: var(--gap-md);
}

.project-lang {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--seed-muted);
    letter-spacing: 0.02em;
}

.lang-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.lang-dot.python {
    background: var(--lang-python);
}

.lang-dot.dart {
    background: var(--lang-dart);
}

.lang-dot.html-lang {
    background: var(--lang-html);
}

.lang-dot.none {
    background: var(--seed-muted);
}

/* ─── tech stack ──────────────────────────────────────────────── */
.stack-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--gap-xl);
}

.tech-category-label {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--seed-muted);
    margin-bottom: var(--gap-md);
    padding-bottom: var(--gap-sm);
    border-bottom: 1px solid var(--seed-border);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--gap-sm);
}

.tech-tag {
    padding: 5px 12px;
    border: 1px solid var(--seed-border);
    border-radius: var(--radius-pill);
    font-size: var(--fs-caption);
    font-weight: 500;
    color: var(--seed-fg);
    transition: border-color 0.15s ease, color 0.15s ease;
}

.tech-tag:hover {
    border-color: color-mix(in oklch, var(--seed-accent) 40%, transparent);
    color: var(--seed-accent);
}

/* ─── contact ─────────────────────────────────────────────────── */
.contact-section {
    text-align: center;
}

.contact-section .section-header {
    max-width: 480px;
    margin-inline: auto;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: var(--gap-lg);
    flex-wrap: wrap;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: var(--gap-sm);
    padding: 12px 24px;
    border: 1px solid var(--seed-border);
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 500;
    transition: border-color 0.15s ease, color 0.15s ease;
}

.contact-link svg {
    width: 16px;
    height: 16px;
}

.contact-link:hover {
    border-color: color-mix(in oklch, var(--seed-accent) 40%, transparent);
    color: var(--seed-accent);
}

/* ─── footer ──────────────────────────────────────────────────── */
.pagefoot {
    padding-block: var(--gap-xl);
    border-top: 1px solid var(--seed-border);
}

.pagefoot-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--gap-md);
    font-size: var(--fs-caption);
    color: var(--seed-muted);
}

/* ─── Typed.js cursor ─────────────────────────────────────────── */
.typed-cursor {
  color: var(--seed-accent);
  font-weight: 300;
}

/* ─── entrance animations ─────────────────────────────────────── */
.fade-in {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ─── responsive ──────────────────────────────────────────────── */
@media (max-width: 920px) {
    .about-grid {
        grid-template-columns: 1fr;
    }

    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stack-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .section {
        padding-block: var(--gap-2xl);
    }
}

@media (max-width: 640px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }

    .stack-grid {
        grid-template-columns: 1fr;
        gap: var(--gap-lg);
    }

    .topnav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: grid;
    }

    .hero-section {
        min-height: 80vh;
        align-items: flex-start;
        padding-top: calc(72px + var(--gap-2xl));
    }

    .hero-content {
        margin-left: 0;
    }

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

    .hero-actions .btn {
        justify-content: center;
    }

    .contact-links {
        flex-direction: column;
        align-items: stretch;
    }

    .contact-link {
        justify-content: center;
    }
}