:root {
  color-scheme: light;
  --bg: #f8fafc;
  --bg-grad: linear-gradient(180deg, #f8fafc 0%, #e2e8f0 100%);
  --surface: #ffffff;
  --accent: #0f766e;
  --accent-strong: #115e59;
  --accent-soft: rgba(15, 118, 110, 0.08);
  --text: #0f172a;
  --muted: #64748b;
  --border: rgba(15, 23, 42, 0.08);
  --border-accent: rgba(15, 118, 110, 0.18);
  --danger: #dc2626;
  --danger-soft: #fef2f2;
  --warn: #92400e;
  --warn-soft: #fffbeb;
  --ok: #047857;
  --ok-soft: #ecfdf5;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.08);
  --radius-sm: 12px;
  --radius: 18px;
  --radius-lg: 24px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  background: var(--bg-grad);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== Topbar ===== */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.5rem;
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-md);
}
.topbar .brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
}
.topbar .brand .frog { font-size: 1.6rem; line-height: 1; }
.topbar .user {
  font-size: 0.85rem;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
  font-weight: 500;
}

/* ===== Layout ===== */
.page {
  max-width: 880px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

.page-header {
  margin-bottom: 1.75rem;
}
.page-header .eyebrow {
  display: inline-flex;
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.page-header h1 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  margin: 0 0 0.4rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.page-header .subtitle {
  color: var(--muted);
  margin: 0;
  font-size: 1rem;
}

/* ===== Cards ===== */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-sm);
}
.card h2 {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}
.card .card-icon {
  font-size: 1.5rem;
  margin-right: 0.4rem;
}
.card p.muted-text {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.action-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  cursor: pointer;
}
.action-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-accent);
  text-decoration: none;
}
.action-card .icon {
  font-size: 2rem;
  line-height: 1;
  margin-bottom: 0.5rem;
}
.action-card .title {
  font-weight: 700;
  font-size: 1.05rem;
}
.action-card .desc {
  color: var(--muted);
  font-size: 0.9rem;
  flex-grow: 1;
}
.action-card.disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
.action-card .badge {
  font-size: 0.68rem;
  padding: 0.2rem 0.55rem;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 999px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  align-self: flex-start;
}
.action-card .badge.soon {
  background: rgba(100, 116, 139, 0.12);
  color: var(--muted);
}

/* ===== Form elements ===== */
label.field {
  display: block;
  margin-bottom: 0;
}
label.field > .label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.4rem;
}
label.field .hint {
  display: block;
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 0.3rem;
}

input[type="text"],
input[type="number"],
input[type="date"],
input[type="email"],
input[type="password"],
select,
textarea {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid #d1d5db;
  background: #fff;
  font-size: 0.95rem;
  color: var(--text);
  font-family: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
input::placeholder, textarea::placeholder { color: #9ca3af; }
textarea { min-height: 70px; resize: vertical; }

select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23475569' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.8rem center;
  padding-right: 2rem;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
@media (max-width: 600px) {
  .form-grid { grid-template-columns: 1fr; }
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.75rem 1.4rem;
  border-radius: 999px;
  border: 1px solid transparent;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s ease, transform 0.05s ease, box-shadow 0.15s ease;
  box-shadow: 0 8px 20px rgba(15, 118, 110, 0.18);
}
.btn:hover { background: var(--accent-strong); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; box-shadow: none; }

.btn.ghost {
  background: transparent;
  color: var(--accent);
  border-color: var(--border-accent);
  box-shadow: none;
}
.btn.ghost:hover { background: var(--accent-soft); }

.btn.small {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

/* ===== Line items ===== */
.line-item {
  position: relative;
  padding: 1.1rem 1.1rem 1.1rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
  background: #fff;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.line-item:hover { border-color: var(--border-accent); }

.line-item .grid {
  display: grid;
  grid-template-columns: 2fr 0.7fr 1.1fr;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}
.line-item .grid-row-2 {
  display: grid;
  grid-template-columns: 1.4fr 1.4fr 1.2fr;
  gap: 0.75rem;
}

.line-item .item-number {
  position: absolute;
  top: -0.55rem;
  left: 0.85rem;
  background: var(--accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.line-item .remove {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background: transparent;
  border: none;
  color: var(--muted);
  cursor: pointer;
  width: 26px;
  height: 26px;
  border-radius: 999px;
  font-size: 1.1rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease, color 0.15s ease;
}
.line-item .remove:hover {
  background: var(--danger-soft);
  color: var(--danger);
}

@media (max-width: 720px) {
  .line-item .grid,
  .line-item .grid-row-2 {
    grid-template-columns: 1fr 1fr;
  }
}

/* ===== Status banners ===== */
.status {
  padding: 0.85rem 1.1rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
  font-size: 0.92rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  border: 1px solid transparent;
}
.status .icon { font-size: 1.1rem; }
.status.ok    { background: var(--ok-soft);     color: var(--ok);     border-color: #a7f3d0; }
.status.error { background: var(--danger-soft); color: var(--danger); border-color: #fecaca; }
.status.warn  { background: var(--warn-soft);   color: var(--warn);   border-color: #fde68a; }
.status.info  { background: var(--accent-soft); color: var(--accent); border-color: var(--border-accent); }

/* ===== Actions row ===== */
.actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.muted-text { color: var(--muted); font-size: 0.9rem; }

/* ===== Loading spinner ===== */
.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }