:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  background: #0a0f18;
  color: #eef3f8;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at 15% 0, #153249 0, #0a0f18 38rem); }
.shell { width: min(1180px, calc(100% - 32px)); margin: 0 auto; padding: 42px 0 72px; }
.hidden { display: none !important; }
.card { background: rgba(16, 25, 37, .96); border: 1px solid #28384a; border-radius: 18px; padding: 24px; box-shadow: 0 18px 50px rgba(0,0,0,.24); }
.login-card { max-width: 440px; margin: 8vh auto 0; }
.eyebrow { margin: 0 0 7px; color: #4dd5b3; font-size: .73rem; font-weight: 800; letter-spacing: .17em; }
h1, h2, h3 { margin: 0; }
h1 { font-size: clamp(1.8rem, 4vw, 2.65rem); letter-spacing: -.04em; }
h2 { font-size: 1.3rem; }
h3 { font-size: 1rem; margin-bottom: 14px; }
.muted { color: #9dadbd; line-height: 1.5; }
form { display: grid; gap: 15px; }
label { display: grid; gap: 7px; color: #c9d5df; font-size: .9rem; }
input, select { width: 100%; border: 1px solid #35485c; border-radius: 10px; padding: 11px 12px; background: #0b1420; color: #f5f8fb; font: inherit; outline: none; }
input:focus, select:focus { border-color: #4dd5b3; box-shadow: 0 0 0 3px rgba(77,213,179,.12); }
button { border: 0; border-radius: 10px; padding: 12px 16px; background: #4dd5b3; color: #061611; font: inherit; font-weight: 800; cursor: pointer; }
button:hover { background: #70e5c7; }
button:disabled { opacity: .55; cursor: wait; }
button.secondary { color: #dce7ee; background: #223245; border: 1px solid #35485c; }
button.small { padding: 7px 11px; font-size: .82rem; }
.topbar { display: flex; justify-content: space-between; align-items: flex-start; gap: 24px; margin-bottom: 24px; }
.account-box { display: grid; grid-template-columns: auto auto; align-items: baseline; gap: 2px 8px; text-align: right; color: #9dadbd; }
.account-box strong { grid-row: span 2; font-size: 2.2rem; color: #4dd5b3; }
.account-box button { grid-column: 1 / -1; margin-top: 8px; }
.grid { display: grid; grid-template-columns: minmax(320px, .9fr) minmax(360px, 1.1fr); gap: 20px; align-items: start; }
fieldset { display: flex; flex-wrap: wrap; gap: 8px 18px; border: 1px solid #35485c; border-radius: 10px; padding: 12px; }
legend { color: #c9d5df; padding: 0 6px; font-size: .9rem; }
.check { display: flex; grid-template-columns: auto auto; align-items: center; gap: 7px; }
.check input { width: auto; accent-color: #4dd5b3; }
.message { min-height: 1.3em; margin: 14px 0 0; color: #6ee7c7; }
.message.error, .error { color: #ff8d8d; }
.file-list { display: grid; gap: 8px; margin-top: 12px; }
.file-item { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 12px; background: #0b1420; border-radius: 10px; }
.history { display: grid; gap: 10px; margin-top: 16px; max-height: 610px; overflow: auto; }
.history-item { padding: 13px; border: 1px solid #2a3b4d; border-radius: 11px; background: #0d1723; }
.history-item strong { display: block; word-break: break-all; }
.history-meta { display: flex; flex-wrap: wrap; gap: 5px 14px; margin: 7px 0; color: #9dadbd; font-size: .82rem; }
.history-actions { display: flex; flex-wrap: wrap; gap: 7px; }
.section-title { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
#admin-panel { margin-top: 20px; }
.admin-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 20px; }
.table-wrap { overflow-x: auto; margin-top: 20px; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px; border-bottom: 1px solid #2a3b4d; text-align: left; }
th { color: #9dadbd; font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; }

@media (max-width: 780px) {
  .shell { width: min(100% - 20px, 620px); padding-top: 20px; }
  .topbar { flex-direction: column; }
  .account-box { text-align: left; }
  .grid, .admin-grid { grid-template-columns: 1fr; }
  .card { padding: 18px; border-radius: 14px; }
}