/* ============================================================
   Design tokens — เปลี่ยน theme ทั้งเว็บได้จากบล็อกนี้บล็อกเดียว
   ตอนนี้เป็นสี placeholder กลางๆ รอ brand guide จริงจากลูกค้า
   ============================================================ */
:root {
  --color-primary: #1a7f5a;
  --color-primary-contrast: #ffffff;
  --color-bg: #f6f7f8;
  --color-surface: #ffffff;
  --color-text: #1c1c1e;
  --color-text-muted: #6b7280;
  --color-border: #e5e7eb;
  --color-success: #16a34a;
  --color-warning: #d97706;
  --color-danger: #dc2626;
  --font-family: 'IBM Plex Sans Thai', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --spacing: 16px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
}
/* form controls (input/select/button/textarea) ไม่ inherit font จาก body เอง — ต้องสั่งทับ
   ไม่งั้นจะกลายเป็น font ระบบ ไม่ใช่ IBM Plex Sans Thai */
button, input, select, textarea { font-family: inherit; }

.container { max-width: 480px; margin: 0 auto; padding: var(--spacing); }
.wide { max-width: 1100px; }
.card {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: var(--spacing);
  margin-bottom: var(--spacing);
}
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 100%; padding: 14px; border: none; border-radius: var(--radius-sm);
  background: var(--color-primary); color: var(--color-primary-contrast);
  font-size: 16px; font-weight: 600; cursor: pointer; text-decoration: none;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-secondary { background: var(--color-surface); color: var(--color-primary); border: 1px solid var(--color-primary); }
.btn-danger { background: var(--color-danger); }
.btn-sm { width: auto; padding: 8px 16px; font-size: 14px; }
.field { margin-bottom: 12px; }
.field label { display: block; font-size: 14px; color: var(--color-text-muted); margin-bottom: 4px; }
.field input, .field select, input.inline, select.inline {
  width: 100%; padding: 12px; font-size: 16px;
  border: 1px solid var(--color-border); border-radius: var(--radius-sm); background: var(--color-surface);
}
input.inline, select.inline { width: auto; padding: 8px 10px; font-size: 14px; }
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge-PENDING { background: #fef3c7; color: var(--color-warning); }
.badge-APPROVED { background: #dcfce7; color: var(--color-success); }
.badge-REJECTED { background: #fee2e2; color: var(--color-danger); }
.badge-dup { background: #fee2e2; color: var(--color-danger); }
.muted { color: var(--color-text-muted); font-size: 13px; }
.error { color: var(--color-danger); font-size: 14px; margin: 8px 0; }
h1 { font-size: 20px; } h2 { font-size: 17px; }
.hidden { display: none !important; } /* !important กันโดนกฎ display อื่นที่ประกาศทีหลังทับ (เช่น .overlay) */

/* กล่องติ๊กยอมรับ (ข้อตกลง/PDPA) — กดได้ทั้งกล่อง ไฮไลต์เขียวเมื่อติ๊กแล้ว */
.consent-box {
  display: flex; gap: 12px; align-items: flex-start;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  padding: 14px 16px; margin: 14px 0;
  cursor: pointer; user-select: none; -webkit-user-select: none;
  font-size: 15px; line-height: 1.65;
  transition: border-color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
}
.consent-box input[type="checkbox"] {
  width: 24px; height: 24px; margin: 1px 0 0; flex-shrink: 0;
  accent-color: var(--color-primary);
  cursor: pointer;
}
.consent-box.checked {
  border-color: var(--color-primary);
  background: #f0faf5;
  box-shadow: 0 0 0 3px rgba(26, 127, 90, 0.12);
}

/* overlay ประมวลผล (mini app) — จอมืด+เบลอพื้นหลัง แล้ววาง modal กล่องขาวตรงกลาง */
.overlay {
  position: fixed; inset: 0; z-index: 100;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px); /* iOS Safari */
  animation: overlay-fade 0.25s ease-out;
}
@keyframes overlay-fade { from { opacity: 0; } to { opacity: 1; } }
.overlay-box {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
  padding: 32px 36px;
  max-width: 82%;
  display: flex; flex-direction: column; align-items: center; gap: 18px;
  animation: overlay-pop 0.25s ease-out;
}
@keyframes overlay-pop { from { transform: scale(0.92); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.spinner {
  width: 48px; height: 48px; border-radius: 50%;
  border: 4px solid var(--color-border);
  border-top-color: var(--color-primary);
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.overlay-text {
  color: var(--color-text); font-size: 16px; font-weight: 600;
  text-align: center; white-space: pre-line; line-height: 1.6;
}

/* language selector (mini app) */
.lang-sel { display: flex; justify-content: flex-end; gap: 0; margin-bottom: 8px; }
.lang-btn {
  padding: 4px 14px; font-size: 13px; font-weight: 600; cursor: pointer;
  background: var(--color-surface); color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.lang-btn:first-child { border-radius: 999px 0 0 999px; }
.lang-btn:last-child { border-radius: 0 999px 999px 0; border-left: none; }
.lang-btn.active { background: var(--color-primary); color: var(--color-primary-contrast); border-color: var(--color-primary); }

/* admin */
.topbar {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  background: var(--color-surface); border-bottom: 1px solid var(--color-border);
  padding: 12px 24px; position: sticky; top: 0; z-index: 10;
}
.topbar nav { display: flex; gap: 16px; }
.topbar a { text-decoration: none; color: var(--color-text-muted); font-weight: 600; }
.topbar a.active { color: var(--color-primary); }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--color-border); font-size: 14px; vertical-align: top; }
th { color: var(--color-text-muted); font-weight: 600; }
.stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 16px; text-align: center; }
.stat .num { font-size: 28px; font-weight: 700; }
/* เตือนใบที่ user แก้ฟิลด์สำคัญ (เลขที่ใบเสร็จ/ยอดรวม) — ให้ทีมงานเห็นก่อนกดอนุมัติ */
.alert-danger {
  background: #fee2e2; border: 1.5px solid var(--color-danger); color: #991b1b;
  padding: 10px 14px; border-radius: var(--radius-sm); margin-bottom: 12px;
  font-weight: 600; animation: attention-pulse 1.4s ease-in-out 4;
}
@keyframes attention-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(220, 38, 38, 0.45); }
  50% { box-shadow: 0 0 0 8px rgba(220, 38, 38, 0); }
}
.diff-critical th, .diff-critical td { background: #fef2f2; }
.diff-critical td:last-child { border-left: 3px solid var(--color-danger); }
.card-flagged { border-left: 4px solid var(--color-danger) !important; }

.review-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 800px) { .review-grid { grid-template-columns: 1fr; } }
.receipt-img { width: 100%; border-radius: var(--radius-sm); border: 1px solid var(--color-border); }
.thumb { width: 56px; height: 56px; object-fit: cover; border-radius: var(--radius-sm); }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-top: 8px; }