:root {
  --color-primary: #06C755;
  --color-primary-dark: #04A444;
  --color-primary-tint: #F0F8EE;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F8F9FA;
  --color-text: #202124;
  --color-muted: #5F6368;
  --color-border: #DADCE0;
  --color-error: #DC2626;
  --color-warn-bg: #FDE7E9;
  --color-warn-fg: #C5221F;
  --color-info-bg: #E8F0FE;
  --color-info-fg: #1A73E8;
  --color-success-bg: #E6F4EA;
  --color-success-fg: #137333;

  --font-family: "Yu Gothic UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN",
                 -apple-system, BlinkMacSystemFont, system-ui, sans-serif;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;

  --shadow-sm: 0 1px 2px rgba(60, 64, 67, 0.10);
  --shadow-md: 0 2px 8px rgba(60, 64, 67, 0.12);

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
  font-size: 16px;
  color: var(--color-text);
  background: var(--color-bg-alt);
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* ========== App Bar ========== */
.appbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md);
  background: var(--color-primary);
  color: white;
  box-shadow: var(--shadow-sm);
}
.appbar-title {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.5px;
}
.appbar-version {
  font-size: 11px;
  opacity: 0.7;
  font-variant-numeric: tabular-nums;
}

/* ========== Screen ========== */
#app { min-height: calc(100vh - 56px); }
.screen { display: block; }
.screen[hidden] { display: none; }
.container {
  max-width: 600px;
  margin: 0 auto;
  padding: var(--space-md);
}

/* ========== Loader ========== */
.loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  min-height: 60vh;
}
.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--color-primary-tint);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loader-text {
  margin-top: var(--space-md);
  color: var(--color-muted);
}

/* ========== User Banner ========== */
.user-banner {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: var(--space-md);
  background: var(--color-primary-tint);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
}
.user-name {
  font-weight: 600;
  font-size: 17px;
  color: var(--color-text);
}
.user-fnumber {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  color: var(--color-muted);
}
.section-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-muted);
  margin: var(--space-md) 0 var(--space-sm);
  letter-spacing: 0.5px;
}

/* ========== Job Card ========== */
.job-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.job-card {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: var(--space-md);
  border-left: 4px solid var(--color-primary);
  transition: box-shadow 0.15s, transform 0.05s;
  cursor: pointer;
}
.job-card:hover { box-shadow: var(--shadow-md); }
.job-card:active { transform: scale(0.99); }
.job-card.submitted {
  border-left-color: var(--color-success-fg);
  background: var(--color-success-bg);
}
.job-card-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-xs);
}
.job-date {
  font-weight: 600;
  color: var(--color-primary-dark);
  font-size: 15px;
}
.job-case-badge {
  display: inline-block;
  padding: 2px 8px;
  background: var(--color-primary);
  color: white;
  font-weight: 600;
  font-size: 13px;
  border-radius: 999px;
  margin-right: var(--space-sm);
}
.job-client {
  font-weight: 600;
  margin-right: var(--space-sm);
}
.job-site {
  color: var(--color-text);
}
.job-time {
  color: var(--color-muted);
  font-size: 14px;
  margin-top: var(--space-xs);
  font-variant-numeric: tabular-nums;
}
.job-status-badge {
  display: inline-block;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--color-success-bg);
  color: var(--color-success-fg);
  font-weight: 600;
}

/* ========== Card ========== */
.card {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: var(--space-lg);
  margin: var(--space-md) 0;
}
.card h2 { margin: 0 0 var(--space-md); font-size: 18px; }
.card p { margin: var(--space-sm) 0; color: var(--color-text); }
.card-error { border-left: 4px solid var(--color-error); }
.card-warn { border-left: 4px solid var(--color-warn-fg); background: var(--color-warn-bg); }
.card-info { border-left: 4px solid var(--color-info-fg); }
.card-success { border-left: 4px solid var(--color-success-fg); background: var(--color-success-bg); }

.job-summary {
  padding: var(--space-md);
  background: var(--color-primary-tint);
  border-radius: var(--radius-sm);
  margin: var(--space-md) 0;
  font-size: 14px;
}
.job-summary-row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-sm);
  margin: 2px 0;
}
.job-summary-key {
  color: var(--color-muted);
  font-size: 13px;
}
.job-summary-val {
  font-weight: 500;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* ========== Form ========== */
.field {
  margin: var(--space-md) 0;
}
.field label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-muted);
  margin-bottom: var(--space-xs);
}
.field input, .field select {
  width: 100%;
  padding: 12px;
  font-size: 17px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  -webkit-appearance: none;
  appearance: none;
  font-variant-numeric: tabular-nums;
}
.field input:focus, .field select:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: -1px;
  border-color: var(--color-primary);
}

.error-row {
  background: var(--color-warn-bg);
  color: var(--color-warn-fg);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  margin: var(--space-sm) 0;
  font-size: 14px;
}

/* ========== Buttons ========== */
.actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-top: var(--space-lg);
}
.btn {
  flex: 1 1 auto;
  min-width: 80px;
  padding: 12px var(--space-md);
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: opacity 0.1s, background 0.15s, transform 0.05s;
  -webkit-tap-highlight-color: transparent;
}
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--color-primary); color: white; }
.btn-primary:hover:not(:disabled) { background: var(--color-primary-dark); }
.btn-secondary { background: var(--color-bg-alt); color: var(--color-text); border: 1px solid var(--color-border); }
.btn-warn { background: var(--color-warn-bg); color: var(--color-warn-fg); border: 1px solid var(--color-warn-fg); }

/* ========== Utility ========== */
.muted { color: var(--color-muted); }
.small { font-size: 12px; }

/* ========== Responsive (small mobile) ========== */
@media (max-width: 360px) {
  html, body { font-size: 15px; }
  .container { padding: var(--space-sm); }
  .card { padding: var(--space-md); }
  .actions { flex-direction: column; }
  .btn { width: 100%; }
}