:root {
  --bg: #f8fafc;
  --card: #ffffff;
  --ink: #111827;
  --muted: #6b7280;
  --line: #e5e7eb;
  --accent: #111827;
  --accent-ink: #ffffff;
  --success: #059669;
  --error: #dc2626;
  --warn: #d97706;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif; background: var(--bg); color: var(--ink); }
input, textarea, select, button { font: inherit; color: inherit; }
a { color: var(--ink); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 22px; margin: 0 0 12px; }
h2 { font-size: 17px; margin: 20px 0 10px; }
h3 { font-size: 15px; margin: 16px 0 8px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }

/* Top bar + side nav (mobile-first) */
.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px; background: var(--accent); color: var(--accent-ink);
  padding-top: max(10px, env(safe-area-inset-top));
}
.topbar .brand { color: var(--accent-ink); font-weight: 700; }
.menu-toggle {
  background: transparent; border: none; color: var(--accent-ink); font-size: 22px; padding: 4px 10px;
}
.sidenav {
  position: fixed; top: 0; left: -260px; width: 240px; height: 100vh;
  background: #0b1220; color: #f8fafc; z-index: 100; padding-top: 60px;
  transition: left 0.2s ease;
}
.sidenav ul { list-style: none; margin: 0; padding: 0; }
.sidenav li a, .sidenav li .linklike {
  display: block; padding: 14px 20px; color: #f8fafc; border-bottom: 1px solid #1f2937;
}
.sidenav .linklike { background: transparent; border: none; width: 100%; text-align: left; cursor: pointer; }
body.nav-open .sidenav { left: 0; }
body.nav-open::after {
  content: ""; position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 90;
}

.content {
  padding: 16px;
  padding-bottom: max(20px, env(safe-area-inset-bottom));
  max-width: 720px; margin: 0 auto;
}

/* Login */
.login-card {
  margin: 60px auto 0; max-width: 380px; background: var(--card); padding: 24px;
  border-radius: 14px; box-shadow: 0 6px 30px rgba(0,0,0,0.06);
}
.login-card h1 { margin-top: 0; }
.login-card label { display: block; margin-bottom: 16px; }
.login-card input[type=password] {
  width: 100%; padding: 12px; border: 1px solid var(--line); border-radius: 10px;
  font-size: 16px; margin-top: 6px;
}

/* Buttons */
.btn {
  display: inline-block; padding: 10px 14px; border-radius: 10px;
  background: var(--card); border: 1px solid var(--line); color: var(--ink);
  cursor: pointer; text-decoration: none; font-size: 15px;
}
.btn:hover { text-decoration: none; }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.danger { background: #fef2f2; border-color: #fecaca; color: var(--error); }
.linklike {
  background: transparent; border: none; color: inherit; cursor: pointer; padding: 0;
  font: inherit; text-align: left;
}

/* Cards grid (dashboard) */
.grid-cards {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px; margin: 0 0 20px;
}
.card {
  background: var(--card); border: 1px solid var(--line); padding: 12px; border-radius: 12px;
  display: flex; flex-direction: column; justify-content: space-between; min-height: 84px;
}
.card .card-label { font-size: 12px; color: var(--muted); }
.card .card-num { font-size: 28px; font-weight: 700; }

/* Lists */
.clean-list { list-style: none; margin: 0; padding: 0; }
.clean-list > li {
  background: var(--card); border: 1px solid var(--line); padding: 12px 14px;
  border-radius: 10px; margin-bottom: 8px;
}
.clean-list > li a { display: block; }
.stone-list { list-style: none; margin: 0; padding: 0; }
.stone-list > li {
  background: var(--card); border: 1px solid var(--line); padding: 12px 14px;
  border-radius: 10px; margin-bottom: 8px;
}
.stone-list .row1 { display: flex; justify-content: space-between; align-items: center; }
.stone-list .sku { font-weight: 700; }
.stone-list .row2 { color: var(--muted); font-size: 14px; margin-top: 4px; }
.stone-list .row3 { margin-top: 6px; }

/* Filter row */
.filters {
  display: flex; gap: 8px; margin: 10px 0 14px; flex-wrap: wrap;
}
.filters input[type=search], .filters select {
  flex: 1 1 auto; min-width: 120px;
  padding: 10px; border-radius: 10px; border: 1px solid var(--line); font-size: 15px;
  background: var(--card);
}

/* Page head (title + primary action) */
.page-head {
  display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px;
}

/* Form grid (mobile-first single column, expand on wider) */
.form-grid {
  display: grid; grid-template-columns: 1fr; gap: 10px; background: var(--card);
  padding: 14px; border-radius: 12px; border: 1px solid var(--line);
}
.form-grid label { display: block; font-size: 13px; color: var(--muted); }
.form-grid input, .form-grid select, .form-grid textarea {
  display: block; width: 100%; padding: 10px 12px; margin-top: 4px;
  border: 1px solid var(--line); border-radius: 10px; font-size: 16px; background: white;
}
.form-grid textarea { resize: vertical; }
.form-grid .section-h { grid-column: 1 / -1; margin-top: 6px; }
@media (min-width: 640px) {
  .form-grid { grid-template-columns: 1fr 1fr; }
  .form-grid .section-h { grid-column: 1 / -1; }
  .form-grid label:has(textarea), .form-grid label:has(input[name=address]),
  .form-grid label:has(input[name=image_url]), .form-grid label:has(input[name=notes]) {
    grid-column: 1 / -1;
  }
}

/* Key-value blocks */
.kv {
  display: grid; grid-template-columns: 1fr; gap: 6px; background: var(--card);
  padding: 12px 14px; border-radius: 12px; border: 1px solid var(--line);
}
.kv > div { display: grid; grid-template-columns: 100px 1fr; gap: 8px; padding: 4px 0; border-bottom: 1px solid var(--line); }
.kv > div:last-child { border-bottom: none; }
.kv b { color: var(--muted); font-weight: 500; font-size: 13px; }
.kv .wide { grid-column: 1 / -1; grid-template-columns: 100px 1fr; }
.kv.private { background: #fffbeb; }

/* Status pills */
.status {
  display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px;
  border: 1px solid var(--line); background: #f3f4f6;
}
.s-in_stock { background: #ecfdf5; color: #065f46; border-color: #a7f3d0; }
.s-on_consignment { background: #eff6ff; color: #1e40af; border-color: #bfdbfe; }
.s-deposit_pinned { background: #fff7ed; color: #9a3412; border-color: #fed7aa; }
.s-sold { background: #f3f4f6; color: #374151; border-color: #d1d5db; }
.s-draft { background: #f3f4f6; color: #374151; }
.s-sent { background: #fef3c7; color: #92400e; }
.s-paid { background: #ecfdf5; color: #065f46; }
.s-open, .s-sourcing { background: #eff6ff; color: #1e40af; }
.s-fulfilled { background: #ecfdf5; color: #065f46; }
.s-dead { background: #f3f4f6; color: #6b7280; }

/* Action buttons block */
.action-buttons { display: flex; gap: 8px; flex-wrap: wrap; align-items: flex-start; }
.action-buttons form { margin: 0; }
.action-buttons details { border: 1px solid var(--line); border-radius: 10px; background: var(--card); }
.action-buttons details[open] { padding: 8px; }
.action-buttons summary { list-style: none; cursor: pointer; padding: 10px 14px; }
.action-buttons summary::-webkit-details-marker { display: none; }
.inline-form {
  display: flex; gap: 8px; padding: 8px; flex-wrap: wrap;
}
.inline-form select, .inline-form input {
  padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; font-size: 15px; min-width: 100px;
}

/* Flashes */
.flashes { margin-bottom: 12px; }
.flash {
  padding: 10px 14px; border-radius: 10px; margin-bottom: 8px;
  background: #eff6ff; border: 1px solid #bfdbfe; color: #1e40af;
}
.flash.error { background: #fef2f2; border-color: #fecaca; color: var(--error); }
.flash.success { background: #ecfdf5; border-color: #a7f3d0; color: #065f46; }

/* Stone image */
.stone-img { max-width: 100%; border-radius: 12px; margin-bottom: 12px; border: 1px solid var(--line); }

/* Invoice line rows */
.line-row {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 10px; margin-bottom: 8px;
}
.line-row textarea {
  width: 100%; border: 1px solid var(--line); padding: 8px; border-radius: 8px; font-size: 15px;
  background: white;
}
.line-row .line-cols {
  display: grid; grid-template-columns: 1fr 1fr auto; gap: 6px; margin-top: 6px;
}
.line-row input { padding: 8px; border: 1px solid var(--line); border-radius: 8px; font-size: 15px; background: white; }
.line-add-row { display: flex; gap: 8px; margin-top: 10px; }
.totals-preview {
  margin-top: 12px; padding: 10px; background: var(--card); border: 1px solid var(--line);
  border-radius: 10px; display: grid; gap: 4px; grid-template-columns: 1fr;
}

/* Modal (stone picker) */
.modal {
  padding: 0; border: none; border-radius: 14px; max-width: 500px; width: 90vw;
}
.modal form { padding: 16px; }
.modal input[type=text] {
  width: 100%; padding: 10px; border: 1px solid var(--line); border-radius: 10px;
  font-size: 16px; margin-bottom: 10px;
}
.modal ul { max-height: 55vh; overflow-y: auto; }
.modal .stone-pick-btn {
  width: 100%; text-align: left; padding: 8px 6px; border-radius: 6px; cursor: pointer;
}
.modal .stone-pick-btn:hover { background: #f3f4f6; }
.modal menu { margin: 0; padding: 0; text-align: right; }

.prompt-box {
  margin: 16px 0; padding: 14px; background: #fff7ed; border: 1px solid #fed7aa; border-radius: 12px;
}