:root {
  color-scheme: light;
  --page: #ffffff;
  --surface: #ffffff;
  --text: #191f28;
  --muted: #6b7684;
  --border: #e5e8eb;
  --input: #f7f8fa;
  --accent: #e23b3b;
  --accent-hover: #c72c2c;
  --danger: #e5484d;
  --focus: rgba(226, 59, 59, .24);
}

* { box-sizing: border-box; }
body { min-height: 100vh; margin: 0; min-width: 320px; display: flex; flex-direction: column; background: var(--page); color: var(--text); font-family: Inter, Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
button, input { font: inherit; }
a { color: inherit; }
.site-header { height: 72px; padding: 0 clamp(20px, 5vw, 80px); display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--border); }
.brand { display: inline-flex; align-items: center; gap: 8px; color: var(--text); font-size: 22px; font-weight: 800; letter-spacing: -1px; text-decoration: none; }
.brand-mark { width: 28px; height: 28px; display: grid; place-items: center; color: var(--accent); }
.brand-mark svg { width: 27px; height: 27px; }
.copy-button { min-height: 38px; border: 1px solid var(--border); border-radius: 9px; background: var(--surface); color: var(--text); cursor: pointer; }
.copy-button:hover { background: var(--input); }
.landing { flex: 1; display: grid; place-items: start center; padding: clamp(84px, 16vh, 176px) 20px 80px; }
.hero, .manage-card { width: min(100%, 760px); text-align: center; }
.eyebrow { margin: 0 0 14px; color: var(--accent); font-size: 12px; font-weight: 800; letter-spacing: .12em; }
h1 { margin: 0; font-size: clamp(38px, 6vw, 60px); line-height: 1.13; letter-spacing: -2.6px; }
.subtitle { margin: 18px 0 36px; color: var(--muted); font-size: 18px; letter-spacing: -.3px; }
.shorten-form { display: flex; gap: 10px; width: 100%; }
.shorten-form input { min-width: 0; flex: 1; height: 62px; padding: 0 20px; border: 1px solid var(--border); border-radius: 12px; outline: 0; background: var(--input); color: var(--text); font-size: 17px; }
.shorten-form input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px var(--focus); }
.shorten-form button { height: 62px; padding: 0 27px; border: 0; border-radius: 12px; background: var(--accent); color: white; cursor: pointer; font-weight: 750; font-size: 16px; }
.shorten-form button:hover { background: var(--accent-hover); }
.shorten-form button:disabled { opacity: .65; cursor: wait; }
.form-error { margin: 14px 0 0; color: var(--danger); text-align: left; font-size: 14px; }
.result { margin-top: 18px; overflow: hidden; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); text-align: left; }
.result-row, .manage-row { display: flex; justify-content: space-between; gap: 20px; padding: 22px 24px; align-items: center; }
.result-row { border-bottom: 1px solid var(--border); }
.manage-row { align-items: start; padding-bottom: 10px; }
.result-label { margin: 0 0 7px; color: var(--muted); font-size: 13px; font-weight: 700; }
.result-url { color: var(--accent); font-size: 19px; font-weight: 780; text-underline-offset: 3px; }
.copy-button { flex: 0 0 auto; padding: 0 14px; font-size: 14px; font-weight: 700; }
.manage-note { max-width: 500px; margin: 0; color: var(--muted); font-size: 14px; line-height: 1.55; }
.manage-url { width: calc(100% - 48px); height: 43px; margin: 0 24px 24px; padding: 0 12px; border: 1px solid var(--border); border-radius: 8px; background: var(--input); color: var(--muted); font-size: 13px; }
.manage-card { padding: 36px; border: 1px solid var(--border); border-radius: 16px; background: var(--surface); text-align: left; }
.manage-card h1, .manage-card .eyebrow, .manage-card .subtitle { text-align: center; }
.status-list { margin: 32px 0; border-top: 1px solid var(--border); }
.status-list div { display: grid; grid-template-columns: 120px 1fr; gap: 12px; padding: 18px 0; border-bottom: 1px solid var(--border); }
.status-list dt { color: var(--muted); font-size: 14px; }
.status-list dd { margin: 0; font-weight: 620; }
.status-list a { color: var(--accent); }
.break-all { overflow-wrap: anywhere; }
.delete-button { padding: 11px 14px; border: 1px solid color-mix(in srgb, var(--danger) 55%, var(--border)); border-radius: 9px; background: transparent; color: var(--danger); cursor: pointer; font-weight: 700; }
.site-footer { padding: 24px 20px 30px; border-top: 1px solid var(--border); color: var(--muted); text-align: center; font-size: 12px; line-height: 1.55; }
.site-footer p { margin: 2px 0; }
.site-footer span { color: var(--text); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.site-footer a, .manual-card a { color: var(--accent); text-underline-offset: 3px; }
.footer-nav { display: flex; justify-content: center; gap: 8px; margin: 4px 0; }
.footer-nav span { color: var(--muted); font-family: inherit; }
.manual-page { padding-top: clamp(56px, 10vh, 112px); }
.manual-card { width: min(100%, 780px); padding: clamp(24px, 5vw, 48px); border: 1px solid var(--border); border-radius: 16px; background: var(--surface); text-align: left; }
.manual-card > .eyebrow, .manual-card > h1 { text-align: center; }
.manual-card h1 { margin-bottom: 34px; }
.manual-card h2 { margin: 38px 0 12px; font-size: 20px; letter-spacing: -.5px; }
.manual-card p { color: var(--muted); line-height: 1.75; }
.manual-card strong { color: var(--text); }
.manual-card code { padding: 2px 5px; border-radius: 4px; background: var(--input); color: var(--text); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .9em; overflow-wrap: anywhere; }
.manual-card pre { margin: 14px 0; padding: 15px; overflow-x: auto; border: 1px solid var(--border); border-radius: 9px; background: var(--input); white-space: pre-wrap; }
.manual-card pre code { padding: 0; background: transparent; }
.muted { color: var(--muted); }
.contact-page { padding-top: clamp(96px, 18vh, 180px); }
.contact-card { width: min(100%, 620px); padding: clamp(32px, 6vw, 56px); border: 1px solid var(--border); border-radius: 16px; background: var(--surface); text-align: center; }
.contact-card h1 { margin-bottom: 20px; }
.contact-card p { color: var(--muted); line-height: 1.6; }
.contact-email { display: inline-block; margin-top: 8px; color: var(--accent); font-size: clamp(22px, 4vw, 30px); font-weight: 800; letter-spacing: -.8px; text-underline-offset: 4px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
@media (max-width: 640px) { .site-header { height: 64px; padding: 0 20px; } .landing { min-height: calc(100vh - 64px); padding-top: 90px; } .shorten-form { flex-direction: column; } .shorten-form button { width: 100%; } .result-row, .manage-row { padding: 20px; } .manage-url { width: calc(100% - 40px); margin: 0 20px 20px; } .manage-card { padding: 25px 20px; } .status-list div { grid-template-columns: 1fr; gap: 6px; } }