:root {
  color-scheme: light;
  --accent: #0877b9;
  --accent-dark: #075b8c;
  --background: #f4f7f9;
  --border: #dbe3e8;
  --danger: #b42318;
  --muted: #60717d;
  --surface: #ffffff;
  --text: #16242e;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}
button, input, select { font: inherit; }
button {
  min-height: 2.5rem;
  border: 1px solid var(--accent);
  border-radius: 0.5rem;
  padding: 0.55rem 0.9rem;
  background: var(--accent);
  color: white;
  cursor: pointer;
  font-weight: 650;
}
button:hover { background: var(--accent-dark); }
button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 3px solid rgba(8, 119, 185, 0.25);
  outline-offset: 2px;
}
button:disabled { cursor: not-allowed; opacity: 0.55; }
.button-secondary { background: white; color: var(--accent-dark); }
.button-secondary:hover { background: #eef7fc; }
.button-danger { border-color: #d92d20; background: white; color: var(--danger); }
.button-danger:hover { background: #fff1f0; }
.shell { width: min(1180px, calc(100% - 2rem)); margin-inline: auto; }
.topbar { border-top: 4px solid #064c75; background: var(--surface); border-bottom: 1px solid var(--border); }
.topbar__content { min-height: 7.5rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
h1, h2 { margin: 0; line-height: 1.2; }
h1 { margin-top: 0.2rem; font-size: clamp(1.55rem, 3vw, 2.25rem); }
h2 { font-size: 1.2rem; }
.eyebrow { margin: 0; color: var(--accent-dark); font-size: 0.76rem; font-weight: 750; letter-spacing: 0.08em; text-transform: uppercase; }
.page { padding-block: 1.5rem 3rem; }
.panel { margin-bottom: 1rem; border: 1px solid var(--border); border-radius: 0.75rem; background: var(--surface); padding: 1.25rem; box-shadow: 0 1px 2px rgba(16, 24, 40, 0.04); }
.login-panel { display: grid; grid-template-columns: minmax(16rem, 1fr) minmax(20rem, 1fr); align-items: end; gap: 2rem; }
.login-panel p { margin: 0.45rem 0 0; color: var(--muted); }
.login-form label, .release-form label { display: grid; gap: 0.4rem; color: #344651; font-size: 0.9rem; font-weight: 650; }
.input-action { display: flex; gap: 0.65rem; }
input, select { width: 100%; min-height: 2.55rem; border: 1px solid #b7c5ce; border-radius: 0.45rem; background: white; padding: 0.5rem 0.7rem; color: var(--text); }
.runtime-badge, .status { display: inline-flex; align-items: center; width: fit-content; border: 1px solid var(--border); border-radius: 999px; padding: 0.35rem 0.65rem; background: #f8fafb; color: #40535f; font-size: 0.78rem; font-weight: 700; }
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.75rem; margin-bottom: 1rem; }
.metric { border: 1px solid var(--border); border-radius: 0.65rem; background: var(--surface); padding: 1rem; }
.metric span { display: block; color: var(--muted); font-size: 0.82rem; }
.metric strong { display: block; margin-top: 0.25rem; font-size: 1.65rem; }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.section-heading h2 { margin-top: 0.2rem; }
.section-note { margin: -0.35rem 0 1rem; color: var(--muted); font-size: 0.9rem; }
.release-form { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.9rem; }
.form-action { display: flex; align-items: end; }
.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { border-bottom: 1px solid var(--border); padding: 0.8rem 0.65rem; text-align: left; vertical-align: middle; }
th { color: #4d616d; font-size: 0.75rem; letter-spacing: 0.04em; text-transform: uppercase; }
td small { display: block; margin-top: 0.15rem; color: var(--muted); }
.table-actions { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.table-actions button { min-height: 2rem; padding: 0.3rem 0.55rem; font-size: 0.78rem; }
.status--running { border-color: #8ec8ea; background: #edf8ff; color: #075b8c; }
.status--waiting { border-color: #f3cf75; background: #fffae8; color: #7a5412; }
.status--released { border-color: #9bd4b4; background: #effaf3; color: #17643a; }
.status--failed, .status--rolled_back { border-color: #f2aaa4; background: #fff1f0; color: #8c241c; }
.status--ready { border-color: #9bd4b4; background: #effaf3; color: #17643a; }
.status--missing { border-color: #f3cf75; background: #fffae8; color: #7a5412; }
.artifact-picker { min-width: 13rem; max-width: 19rem; font-size: 0.78rem; }
.empty { padding: 1rem 0; color: var(--muted); text-align: center; }
.error { min-height: 1.5rem; color: var(--danger); font-size: 0.88rem; }
.audit-list { display: grid; gap: 0.55rem; }
.audit-item { display: grid; grid-template-columns: 10rem 1fr auto; gap: 1rem; border-bottom: 1px solid var(--border); padding: 0.65rem 0; }
.audit-item strong { font-size: 0.86rem; }
.audit-item span { color: var(--muted); font-size: 0.82rem; }
.toast { position: fixed; right: 1rem; bottom: 1rem; max-width: min(24rem, calc(100% - 2rem)); border-radius: 0.55rem; background: #17313f; color: white; padding: 0.8rem 1rem; box-shadow: 0 8px 24px rgba(16, 24, 40, 0.2); }

@media (max-width: 800px) {
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .release-form { grid-template-columns: 1fr 1fr; }
  .login-panel { grid-template-columns: 1fr; gap: 1rem; }
}

@media (max-width: 520px) {
  .topbar__content { align-items: flex-start; flex-direction: column; justify-content: center; }
  .metrics, .release-form { grid-template-columns: 1fr; }
  .input-action { align-items: stretch; flex-direction: column; }
  .section-heading { align-items: flex-start; }
  .audit-item { grid-template-columns: 1fr; gap: 0.15rem; }
}