:root {
  --bg: #edf1f4;
  --surface: #ffffff;
  --surface-soft: #f7f9fa;
  --text: #182431;
  --heading: #142231;
  --primary: #315e73;
  --primary-dark: #284d5e;
  --accent: #6c98a0;
  --muted: #667584;
  --line: #dce4e8;
  --success: #237448;
  --danger: #a33b3b;
  --info: #465767;
  --shadow: 0 18px 45px rgba(28, 48, 61, .10);
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 10%, rgba(108, 152, 160, .11), transparent 32%),
    radial-gradient(circle at 90% 90%, rgba(49, 94, 115, .08), transparent 34%),
    var(--bg);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

button, input { font: inherit; }

.app {
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding:
    max(24px, env(safe-area-inset-top))
    max(18px, env(safe-area-inset-right))
    max(24px, env(safe-area-inset-bottom))
    max(18px, env(safe-area-inset-left));
}

.shell {
  width: min(100%, 700px);
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, .8);
  border-radius: 22px;
  background: rgba(255, 255, 255, .82);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--primary);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: .15em;
}

h1 {
  margin: 0;
  color: var(--heading);
  font-size: clamp(29px, 4vw, 38px);
  font-weight: 750;
  line-height: 1.12;
  letter-spacing: -.025em;
}

h2 {
  margin: 0 0 10px;
  color: var(--heading);
  font-size: 19px;
  font-weight: 700;
}

.lead {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.55;
}

.logout {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 11px;
  color: var(--primary-dark);
  text-decoration: none;
  background: rgba(255, 255, 255, .72);
  font-size: 14px;
  font-weight: 600;
  transition: border-color .16s ease, background .16s ease;
}

.logout:hover {
  border-color: #c5d2d8;
  background: #fff;
}

.login-card,
.upload-card {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 17px;
  background: var(--surface);
}

.login-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 128px;
  gap: 12px;
  align-items: end;
}

.field {
  display: grid;
  gap: 6px;
}

.field span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

.field input {
  width: 100%;
  min-height: 46px;
  padding: 0 13px;
  border: 1px solid #cbd7dc;
  border-radius: 11px;
  outline: none;
  background: #fff;
  color: var(--text);
  font-size: 16px;
  transition: border-color .16s ease, box-shadow .16s ease;
}

.field input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(108, 152, 160, .14);
}

.button {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 0;
  border-radius: 11px;
  cursor: pointer;
  text-decoration: none;
  font-size: 15px;
  font-weight: 650;
  transition: transform .14s ease, opacity .14s ease, background-color .14s ease;
}

.button:hover:not(:disabled) { transform: translateY(-1px); }
.button:active:not(:disabled) { transform: translateY(0); }

.button:disabled {
  cursor: default;
  opacity: .45;
}

.button--primary {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 8px 18px rgba(49, 94, 115, .18);
}

.button--primary:hover:not(:disabled) { background: var(--primary-dark); }

.button--secondary {
  color: var(--primary-dark);
  border: 1px solid #cbd7dc;
  background: var(--surface-soft);
}

.button--wide { width: 100%; }

.picker {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}

.status-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 14px 0;
}

.metric {
  min-width: 0;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--surface-soft);
}

.metric span {
  display: block;
  margin-bottom: 3px;
  color: var(--muted);
  font-size: 12px;
}

.metric strong {
  display: block;
  color: var(--heading);
  font-size: 19px;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.progress-box {
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--surface-soft);
  margin-bottom: 18px;
}

.progress-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 8px;
  font-size: 13px;
}

.progress-head span { color: var(--muted); }

.progress-head strong {
  color: var(--primary-dark);
  font-size: 14px;
  font-weight: 700;
}

.progress {
  height: 7px;
  overflow: hidden;
  border-radius: 999px;
  background: #dce6e9;
}

.progress__bar {
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: width .18s ease;
}

.queue-wrap { margin-top: 16px; }

.queue {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.queue__empty,
.queue__item {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--surface-soft);
}

.queue__empty {
  color: var(--muted);
  font-size: 14px;
}

.queue__item {
  display: grid;
  gap: 7px;
}

.queue__row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.queue__name {
  min-width: 0;
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  overflow-wrap: anywhere;
}

.queue__size,
.queue__state {
  color: var(--muted);
  font-size: 12px;
}

.queue__size { flex: 0 0 auto; }
.queue__state--done { color: var(--success); }
.queue__state--error { color: var(--danger); }

.queue__mini-progress {
  height: 5px;
  overflow: hidden;
  border-radius: 999px;
  background: #dce6e9;
}

.queue__mini-bar {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: width .18s ease;
}

.alert {
  margin-top: 14px;
  padding: 11px 13px;
  border-radius: 11px;
  font-size: 13px;
}

.alert--error {
  color: var(--danger);
  border: 1px solid rgba(163, 59, 59, .22);
  background: rgba(163, 59, 59, .07);
}

.alert--info {
  color: var(--info);
  border: 1px solid rgba(70, 87, 103, .18);
  background: rgba(70, 87, 103, .06);
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

@media (max-width: 600px) {
  .app {
    align-items: start;
    padding:
      max(14px, env(safe-area-inset-top))
      max(10px, env(safe-area-inset-right))
      max(14px, env(safe-area-inset-bottom))
      max(10px, env(safe-area-inset-left));
  }

  .shell {
    padding: 13px;
    border-radius: 16px;
  }

  .top {
    align-items: center;
    margin-bottom: 13px;
  }

  .eyebrow {
    margin-bottom: 4px;
    font-size: 9px;
  }

  h1 { font-size: 26px; }
  h2 { font-size: 17px; }

  .lead {
    margin-bottom: 14px;
    font-size: 13px;
    line-height: 1.5;
  }

  .logout {
    min-height: 34px;
    padding: 0 11px;
    border-radius: 9px;
    font-size: 12px;
  }

  .login-card,
  .upload-card {
    padding: 14px;
    border-radius: 13px;
  }

  .login-form { grid-template-columns: 1fr; }

  .field input,
  .button {
    min-height: 43px;
    border-radius: 9px;
    font-size: 14px;
  }

  .picker { grid-template-columns: 1fr; }

  .status-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    margin: 11px 0;
  }

  .metric {
    padding: 10px;
    border-radius: 10px;
  }

  .metric span { font-size: 10px; }
  .metric strong { font-size: 16px; }

  .progress-box,
  .queue__empty,
  .queue__item {
    padding: 10px;
    border-radius: 10px;
  }

  .queue-wrap { margin-top: 13px; }

  .queue__row,
  .progress-head { gap: 7px; }

  .queue__name { font-size: 13px; }
}

@media (max-width: 360px) {
  .top { align-items: flex-start; }
  h1 { font-size: 23px; }
  .status-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}