/* Meng-Syuan (Elmo) Lin — personal site */

:root {
	--bg: #f6f7f9;
	--surface: #ffffff;
	--text: #1f2328;
	--text-2: #4b5563;
	--muted: #8a919c;
	--border: #e5e7eb;
	--accent: #2f6fde;
	--chip-bg: #eef2f7;
	--shadow: 0 1px 2px rgba(16, 24, 40, 0.04), 0 4px 16px rgba(16, 24, 40, 0.06);
	--radius: 14px;
	--max: 1200px;
}

@media (prefers-color-scheme: dark) {
	:root {
		--bg: #0f1115;
		--surface: #171a21;
		--text: #e7e9ee;
		--text-2: #b4bac5;
		--muted: #7d8592;
		--border: #262b35;
		--accent: #6aa0ff;
		--chip-bg: #222733;
		--shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
	}
}

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

html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h, 60px); }

body {
	margin: 0;
	background: var(--surface);
	color: var(--text);
	font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", sans-serif;
	font-size: 17px;
	line-height: 1.65;
	-webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: var(--max); margin: 0 auto; padding: 0 40px; }

/* Hero */
.hero { padding: 80px 0 56px; background: var(--bg); }
.hero .container { display: flex; align-items: center; gap: 44px; }
.hero-photo {
	width: 168px; height: 168px; flex-shrink: 0;
	border-radius: 50%; object-fit: cover;
	border: 4px solid var(--surface); box-shadow: var(--shadow);
}
.hero h1 { margin: 0; font-size: 2.6rem; line-height: 1.2; letter-spacing: -0.02em; }
.hero-tagline { margin: 8px 0 16px; font-size: 1.2rem; color: var(--text-2); }
.hero-meta { display: flex; flex-wrap: wrap; gap: 6px 18px; margin: 0 0 18px; padding: 0; list-style: none; color: var(--muted); font-size: 0.92rem; }
.hero-meta i { margin-right: 6px; }
.social { display: flex; gap: 10px; margin: 0; padding: 0; list-style: none; }
.social a {
	display: inline-flex; align-items: center; justify-content: center;
	width: 42px; height: 42px; border-radius: 50%;
	background: var(--surface); color: var(--text-2);
	border: 1px solid var(--border);
	transition: color 0.15s, border-color 0.15s, transform 0.15s;
}
.social a:hover { color: var(--accent); border-color: var(--accent); text-decoration: none; transform: translateY(-2px); }

/* Nav */
.nav {
	position: sticky; top: 0; z-index: 10;
	background: color-mix(in srgb, var(--surface) 88%, transparent);
	backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
	border-bottom: 1px solid var(--border);
}
.nav ul { display: flex; gap: 6px; margin: 0 auto; padding: 12px 40px; max-width: var(--max); list-style: none; overflow-x: auto; }
.nav a {
	display: block; padding: 7px 14px; border-radius: 8px;
	color: var(--text-2); font-size: 0.95rem; font-weight: 500; white-space: nowrap;
}
.nav a:hover { background: var(--chip-bg); text-decoration: none; }
.nav a.active { background: var(--chip-bg); color: var(--text); }

/* Sections */
main.container { padding-top: 0; padding-bottom: 0; }
.section { padding: 56px 0; }
.section + .section { border-top: 1px solid var(--border); }
.section-title {
	display: flex; align-items: center; gap: 12px;
	margin: 0 0 32px;
	font-size: 1.6rem; font-weight: 700; letter-spacing: -0.01em;
	color: var(--text);
}
.section-title::before {
	content: ""; width: 6px; height: 1.1em; border-radius: 3px;
	background: var(--accent);
}
.section p { margin: 0 0 12px; color: var(--text-2); }
.section p:last-child { margin-bottom: 0; }

/* Entries (experience / projects / education) */
.entry { display: flex; gap: 28px; }
.entry + .entry { margin-top: 36px; padding-top: 36px; border-top: 1px solid var(--border); }
.entry-logo {
	width: 68px; height: 68px; flex-shrink: 0;
	border-radius: 14px; background: #fff; border: 1px solid var(--border);
	padding: 8px; object-fit: contain;
}
.entry-body { flex: 1; min-width: 0; }
.entry-org { margin: 0; font-size: 1.3rem; font-weight: 700; line-height: 1.35; color: var(--text); }
.entry-role { margin: 4px 0 0; font-size: 1.05rem; font-weight: 500; color: var(--text-2); }
.entry-date { color: var(--muted); font-weight: 400; }
.entry-date::before { content: "·"; margin: 0 8px; }
.entry-meta { margin: 4px 0 0 !important; font-size: 0.92rem; color: var(--muted) !important; }
.entry-sub {
	margin: 22px 0 8px;
	font-size: 0.78rem; font-weight: 600;
	text-transform: uppercase; letter-spacing: 0.08em;
	color: var(--muted);
}
.entry ul { margin: 8px 0 0; padding-left: 1.2em; color: var(--text-2); }
.entry-sub + ul { margin-top: 0; }
.entry li { margin: 4px 0; }
.entry li::marker { color: var(--muted); }
.entry a { font-weight: 500; }

.tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 12px 0 0; padding: 0 !important; list-style: none; }
.tags li { margin: 0; }

/* Skills */
.skills { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.skill-card {
	padding: 22px 24px 24px;
	border: 1px solid var(--border); border-radius: 12px;
	background: var(--bg);
}
.skill-title { display: flex; align-items: center; gap: 10px; margin: 0 0 16px; font-size: 1.1rem; font-weight: 600; }
.skill-icon {
	display: inline-flex; align-items: center; justify-content: center;
	width: 34px; height: 34px; border-radius: 9px;
	background: color-mix(in srgb, var(--accent) 12%, transparent);
	color: var(--accent); font-size: 0.85rem;
}
.skill-chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; list-style: none; }
.skill-chips .chip { background: var(--surface); border: 1px solid var(--border); }
.chip {
	display: inline-block; padding: 4px 12px; border-radius: 999px;
	background: var(--chip-bg); color: var(--text-2);
	font-size: 0.88rem; font-weight: 500;
}

/* Footer */
footer { padding: 32px 0 48px; border-top: 1px solid var(--border); text-align: center; color: var(--muted); font-size: 0.88rem; }
footer p { margin: 4px 0; }

/* Large screens */
@media (min-width: 1440px) {
	:root { --max: 1320px; }
	body { font-size: 18px; }
	.hero { padding: 96px 0 64px; }
	.hero-photo { width: 188px; height: 188px; }
	.hero h1 { font-size: 2.9rem; }
	.section { padding: 64px 0; }
	.entry-logo { width: 76px; height: 76px; }
}

/* Mobile */
@media (max-width: 640px) {
	.hero { padding: 40px 0 28px; }
	.hero .container { flex-direction: column; text-align: center; gap: 20px; }
	.hero-photo { width: 120px; height: 120px; }
	.hero h1 { font-size: 1.7rem; }
	.hero-meta, .social { justify-content: center; }
	body { font-size: 16px; }
	.container { padding: 0 18px; }
	.nav ul { padding: 8px 12px; gap: 0; justify-content: space-between; }
	.nav a { padding: 6px 9px; font-size: 0.88rem; }
	.section { padding: 36px 0; }
	.section-title { font-size: 1.35rem; margin-bottom: 24px; }
	/* Logo sits beside the heading; bullets use the full card width */
	.entry { display: grid; grid-template-columns: 44px 1fr; gap: 0 12px; align-items: start; }
	.entry-body { display: contents; }
	.entry-logo { grid-row: span 2; width: 44px; height: 44px; margin-top: 2px; border-radius: 10px; }
	.entry-org { font-size: 1.05rem; }
	.section .entry-role { margin-bottom: 0; }
	.entry-body > :not(.entry-org):not(.entry-role) { grid-column: 1 / -1; }
	.entry-date { display: block; }
	.entry-date::before { content: none; }
	.skills { grid-template-columns: 1fr; gap: 12px; }
	.skill-card { padding: 16px; }
}

.entry-date-only::before { content: none; }