@import url('https://fonts.googleapis.com/css2?family=Inter:ital,wght@0,300;0,400;0,500;0,600;1,300&family=IBM+Plex+Mono:wght@400;500&display=swap');

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

/* ─── Tokens ─────────────────────────────────────────────── */
:root {
    /* Dark (default) */
    --bg: #0d0d0d;
    --bg-card: #111111;
    --bg-tag: #1a1a1a;
    --border: #222222;
    --text: #e8e8e8;
    --text-muted: #666666;
    --text-dim: #999999;
    --accent: #555555;
    --hover: #e8e8e8;
    --nav-bg: rgba(13, 13, 13, 0.65);
}

[data-theme="light"] {
    --bg: #f5f4f0;
    --bg-card: #ffffff;
    --bg-tag: #ebebeb;
    --border: #d8d8d8;
    --text: #141414;
    --text-muted: #999999;
    --text-dim: #555555;
    --accent: #888888;
    --hover: #141414;
    --nav-bg: rgba(245, 244, 240, 0.68);
}

/* ─── Base ───────────────────────────────────────────────── */
html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    font-weight: 400;
    background-color: var(--bg);
    color: var(--text);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* ─── Layout ─────────────────────────────────────────────── */
.container {
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 2rem;
    padding-right: 2rem;
}

@media (max-width: 640px) {
    .container {
        padding-left: 1.25rem;
        padding-right: 1.25rem;
    }
}

/* ─── Navigation ─────────────────────────────────────────── */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: var(--nav-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    transition: background 0.3s ease, border-color 0.3s ease;
}

.nav-inner {
    max-width: 680px;
    margin: 0 auto;
    padding: 1.1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2.5rem;
}

@media (max-width: 640px) {
    .nav-inner {
        padding: 1rem 1.25rem;
        gap: 1.75rem;
    }
}

/* ─── Theme Toggle ───────────────────────────────────────── */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    padding: 0;
    transition: color 0.2s ease;
}

.theme-toggle:hover {
    color: var(--hover);
}

.theme-toggle svg {
    width: 15px;
    height: 15px;
}

/* ─── Nav Links ──────────────────────────────────────────── */
.nav-link {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: var(--hover);
}

.nav-icon {
    color: var(--text-muted);
    display: flex;
    align-items: center;
    transition: color 0.2s ease;
}

.nav-icon:hover {
    color: var(--hover);
}

.nav-icon svg {
    width: 15px;
    height: 15px;
    fill: currentColor;
}

/* ─── Hero / Intro ───────────────────────────────────────── */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    /* Placeholder — swap src in HTML */
    background-image: none;
    transition: opacity 0.1s linear;
}

/* Dark overlay on the image so text stays readable */
.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom,
            rgba(13, 13, 13, 0.55) 0%,
            rgba(13, 13, 13, 0.45) 60%,
            rgba(13, 13, 13, 0.92) 100%);
}

[data-theme="light"] .hero-bg::after {
    background: linear-gradient(to bottom,
            rgba(245, 244, 240, 0.2) 0%,
            rgba(245, 244, 240, 0.15) 60%,
            rgba(245, 244, 240, 0.75) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 0 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
}

.hero-avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--border);
    display: block;
}

.hero-name {
    font-size: 1.6rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text);
    line-height: 1.2;
}

.hero-sub {
    font-size: 0.875rem;
    color: var(--text-muted);
    letter-spacing: 0.01em;
}

.hero-sub a {
    color: var(--text-muted);
    text-decoration: none;
    border-bottom: 1px solid var(--border);
    transition: color 0.2s ease, border-color 0.2s ease;
}

.hero-sub a:hover {
    color: var(--hover);
    border-color: var(--hover);
}

/* ─── Main Content ───────────────────────────────────────── */
.main-content {
    padding-top: 6rem;
    padding-bottom: 6rem;
}

.section {
    margin-bottom: 5rem;
}

.section-label {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    display: block;
}

.about-text {
    font-size: 1.0625rem;
    line-height: 1.85;
    color: var(--text-dim);
}

.about-text+.about-text {
    margin-top: 1.25rem;
}

.about-mono {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.9375rem;
    color: var(--accent);
    margin-top: 1.25rem;
    display: block;
}

.card-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1.75rem 2rem;
    transition: border-color 0.2s ease;
}

.card:hover {
    border-color: var(--accent);
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.25rem;
    letter-spacing: -0.01em;
}

.card-meta {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 1.25rem;
    line-height: 1.6;
}

.card-body {
    font-size: 0.9rem;
    color: var(--text-dim);
    line-height: 1.8;
    list-style: none;
}

.card-body li {
    position: relative;
    padding-left: 1.1rem;
    margin-bottom: 0.5rem;
}

.card-body li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--border);
    font-size: 0.75rem;
    top: 0.12em;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 1.25rem;
}

.tag {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.7rem;
    color: var(--text-muted);
    background: var(--bg-tag);
    border: 1px solid var(--border);
    border-radius: 3px;
    padding: 0.2rem 0.6rem;
    letter-spacing: 0.03em;
}

.skill-row {
    display: flex;
    gap: 1.5rem;
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--border);
    align-items: baseline;
}

.skill-row:first-child {
    border-top: 1px solid var(--border);
}

.skill-label {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 0.06em;
    min-width: 130px;
    flex-shrink: 0;
    padding-top: 0.1rem;
}

.skill-value {
    font-size: 0.875rem;
    color: var(--text-dim);
    line-height: 1.7;
}

@media (max-width: 520px) {
    .skill-row {
        flex-direction: column;
        gap: 0.35rem;
    }

    .skill-label {
        min-width: unset;
    }
}

.page-header {
    padding-bottom: 2.5rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 3.5rem;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text);
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 2.5rem;
    margin-bottom: 1.5rem;
    transition: border-color 0.2s ease;
}

.project-card:hover {
    border-color: var(--accent);
}

.project-card-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text);
    letter-spacing: -0.015em;
    margin-bottom: 0.3rem;
}

.project-card-type {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.72rem;
    color: var(--text-muted);
    letter-spacing: 0.06em;
    margin-bottom: 0.15rem;
}

.project-card-timeline {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.project-section-title {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text);
    letter-spacing: 0.02em;
    margin-bottom: 0.6rem;
    margin-top: 1.75rem;
}

.project-section-title:first-child {
    margin-top: 0;
}

.card-meta a {
    color: inherit;
    text-decoration: none;
    border-bottom: 1px solid var(--border);
    transition: color 0.2s ease, border-color 0.2s ease;
}

.card-meta a:hover {
    color: var(--hover);
    border-color: var(--hover);
}

.strong-label {
    color: var(--text);
    font-weight: 600;
}

.card-text {
    font-size: 0.9rem;
    color: var(--text-dim);
    line-height: 1.8;
}

.project-body {
    font-size: 0.9rem;
    color: var(--text-dim);
    line-height: 1.8;
    list-style: none;
}

.project-body li {
    position: relative;
    padding-left: 1.1rem;
    margin-bottom: 0.5rem;
}

.project-body li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--border);
    font-size: 0.75rem;
    top: 0.12em;
}

.project-link {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-decoration: none;
    border-bottom: 1px solid var(--border);
    padding-bottom: 1px;
    transition: color 0.2s ease, border-color 0.2s ease;
    display: inline-block;
    margin-top: 1.5rem;
}

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

.footer {
    border-top: 1px solid var(--border);
    padding-top: 2.5rem;
    padding-bottom: 2.5rem;
    text-align: center;
}

.footer-text {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.72rem;
    color: var(--text-muted);
    letter-spacing: 0.06em;
}