/* ============================================================
   ระบบเก็บเงินห้อง 36 — Design tokens
   โทนสีดึงมาจากโลโก้จริง (กรมท่า + ทอง) ไม่ใช้สี indigo/ม่วงเริ่มต้นทั่วไป
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Kanit:wght@300;400;500;600;700;800&display=swap');

:root {
  --ink: #0F1B33;
  --brand: #2E4C93;
  --brand-bright: #3B5BB0;
  --brand-deep: #1B2E5C;
  --gold: #C7B552;
  --gold-deep: #A88F2E;
  --paper: #EEF1F8;
  --surface: #FFFFFF;
  --surface-alpha: rgba(255, 255, 255, 0.86);
  --text: var(--ink);
  --text-muted: #5B6478;
  --line: rgba(15, 27, 51, 0.10);
  --success: #1F8A5D;
  --success-bg: #E3F5EC;
  --warning: #B8791A;
  --warning-bg: #FBEEDA;
  --danger: #C1403D;
  --danger-bg: #FBE7E6;
  --radius: 14px;
  --radius-lg: 20px;
  --shadow: 0 10px 34px rgba(15, 27, 51, 0.09);
  --shadow-lift: 0 16px 44px rgba(15, 27, 51, 0.16);
  --font-display: 'Kanit', sans-serif;
  --font-body: 'Kanit', sans-serif;
  --font-mono: 'Kanit', sans-serif;
}

[data-theme="dark"] {
  --ink: #EEF1F8;
  --brand: #6E8FE0;
  --brand-bright: #86A2EA;
  --brand-deep: #A9BEEF;
  --paper: #0B1526;
  --surface: #121F38;
  --surface-alpha: rgba(18, 31, 56, 0.86);
  --text: var(--ink);
  --text-muted: #8E9AB5;
  --line: rgba(255, 255, 255, 0.09);
  --success-bg: #0E2A1E;
  --warning-bg: #33230A;
  --danger-bg: #391414;
  --shadow: 0 10px 34px rgba(0, 0, 0, 0.35);
  --shadow-lift: 0 16px 44px rgba(0, 0, 0, 0.45);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--text);
  transition: background 0.25s, color 0.25s;
  position: relative;
  isolation: isolate;
}

/* ---------- ชั้นแบ็กกราวน์รอง: ลายเส้น doodle + สีไล่โทนแบรนด์ ---------- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-image: url('../img/background.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.7;
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 900px 600px at 100% -10%, rgba(46, 76, 147, 0.10), transparent 60%),
    radial-gradient(ellipse 700px 500px at -10% 110%, rgba(199, 181, 82, 0.12), transparent 55%);
}
[data-theme="dark"] body::before {
  background-image: url('../img/background-dark.webp');
  opacity: 0.5;
}

/* แถบทแยงบางๆ สีทอง-กรมท่า พาดผ่านมุมบนขวา อ้างอิงลายผ้าคาดรุ่น */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 28px;
  background: var(--surface-alpha);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 50;
  flex-wrap: wrap;
  gap: 12px;
}
.navbar::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-deep), var(--brand-bright) 45%, var(--gold) 100%);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--brand-deep);
  letter-spacing: 0.02em;
}
[data-theme="dark"] .navbar-brand { color: var(--brand-bright); }
.navbar-brand img { height: 30px; width: auto; display: block; }

.navbar-links { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.navbar-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}
.navbar-links a:hover { color: var(--brand); border-color: var(--gold); }
.navbar-user {
  color: var(--brand-deep);
  font-size: 0.85rem;
  font-weight: 600;
  background: rgba(199, 181, 82, 0.16);
  padding: 5px 12px;
  border-radius: 999px;
}
[data-theme="dark"] .navbar-user { color: var(--gold); }

.theme-toggle {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  width: 36px; height: 36px;
  cursor: pointer;
  font-size: 1rem;
  transition: transform 0.15s, border-color 0.15s;
}
.theme-toggle:hover { transform: rotate(-12deg); border-color: var(--gold); }

.container { max-width: 1100px; margin: 0 auto; padding: 28px 16px 70px; position: relative; }

h1, h2, h3 { font-family: var(--font-display); font-weight: 600; letter-spacing: 0; color: var(--brand-deep); }
[data-theme="dark"] h1, [data-theme="dark"] h2, [data-theme="dark"] h3 { color: var(--brand-bright); }
h1 { font-size: 1.7rem; margin: 0 0 6px; }
h2 { font-size: 1.25rem; margin: 0 0 14px; }
h3 { font-size: 1.05rem; margin: 0 0 10px; }
.page-lede { color: var(--text-muted); margin: 0 0 24px; font-size: 0.95rem; }

.card {
  background: var(--surface-alpha);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 22px;
  margin-bottom: 18px;
  transition: box-shadow 0.2s, transform 0.2s;
}
.card:hover { box-shadow: var(--shadow-lift); }

.grid { display: grid; gap: 16px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 800px) { .grid-4, .grid-2 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 500px) { .grid-4, .grid-2 { grid-template-columns: 1fr; } }

.stat-card { text-align: center; position: relative; overflow: hidden; }
.stat-card::before {
  content: "";
  position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: linear-gradient(180deg, var(--gold), var(--brand-bright));
}
.stat-card .stat-value {
  font-family: var(--font-mono);
  font-size: 1.65rem;
  font-weight: 600;
  color: var(--brand-deep);
}
[data-theme="dark"] .stat-card .stat-value { color: var(--brand-bright); }
.stat-card .stat-label { color: var(--text-muted); font-size: 0.83rem; margin-top: 6px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 22px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  text-align: center;
  transition: transform 0.12s, box-shadow 0.12s, background 0.15s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: linear-gradient(135deg, var(--brand), var(--brand-deep)); color: #fff; box-shadow: 0 6px 18px rgba(46, 76, 147, 0.28); }
.btn-primary:hover { box-shadow: 0 8px 22px rgba(46, 76, 147, 0.38); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { filter: brightness(1.08); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { filter: brightness(1.08); }
.btn-secondary { background: var(--surface); color: var(--text); border: 1px solid var(--line); }
.btn-secondary:hover { border-color: var(--brand-bright); color: var(--brand); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; box-shadow: none; }
.btn-link { background: none; color: var(--danger); text-decoration: none; padding: 6px 4px; }

.badge {
  display: inline-block;
  padding: 4px 13px;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.badge-pending { background: var(--warning-bg); color: var(--warning); }
.badge-approved { background: var(--success-bg); color: var(--success); }
.badge-rejected { background: var(--danger-bg); color: var(--danger); }

table { width: 100%; border-collapse: collapse; }
th, td { padding: 11px 12px; text-align: left; border-bottom: 1px solid var(--line); font-size: 0.9rem; }
th { color: var(--text-muted); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.04em; }
td.mono, .amount, .reference-code { font-family: var(--font-mono); }
tr.clickable-row { cursor: pointer; transition: background 0.12s; }
tr.clickable-row:hover { background: rgba(46, 76, 147, 0.06); }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-size: 0.88rem; font-weight: 600; color: var(--text); }
.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  padding: 11px 13px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.92rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none;
  border-color: var(--brand-bright);
  box-shadow: 0 0 0 3px rgba(46, 76, 147, 0.14);
}
.form-group input:focus-visible, .form-group textarea:focus-visible, .form-group select:focus-visible,
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

/* Custom select — ปิดลูกศร native ของแต่ละเบราว์เซอร์ วาดลูกศรเองให้หน้าตาเหมือนกันทุกที่ */
.form-group select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  padding-right: 38px;
  cursor: pointer;
  background-repeat: no-repeat;
  background-position: right 13px center;
  background-size: 11px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' fill='none' stroke='%232E4C93' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}
[data-theme="dark"] .form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' fill='none' stroke='%236E8FE0' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}
.form-group select:hover { border-color: var(--brand-bright); }
.form-group select option {
  background: var(--surface);
  color: var(--text);
}
/* IE/Edge เก่ามีปุ่มลูกศรของตัวเองซ้อนมาด้วย ต้องซ่อนแยก */
.form-group select::-ms-expand { display: none; }

.flash { padding: 13px 16px; border-radius: 10px; margin-bottom: 16px; font-size: 0.9rem; font-weight: 500; }
.flash-success { background: var(--success-bg); color: var(--success); }
.flash-error { background: var(--danger-bg); color: var(--danger); }

.tabs { display: flex; gap: 8px; margin-bottom: 18px; flex-wrap: wrap; }
.tab {
  padding: 8px 18px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
}
.tab.active { background: var(--brand); color: #fff; border-color: var(--brand); }

.modal-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(11, 21, 38, 0.55);
  backdrop-filter: blur(2px);
  z-index: 100;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.modal-overlay.open { display: flex; }
.modal-box {
  background: var(--surface);
  border-radius: var(--radius-lg);
  max-width: 480px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 26px;
  box-shadow: var(--shadow-lift);
  border-top: 3px solid var(--gold);
}
.modal-box img.slip-preview { width: 100%; border-radius: 10px; margin: 12px 0; cursor: zoom-in; }
.modal-actions { display: flex; gap: 10px; margin-top: 20px; }
.modal-actions .btn { flex: 1; }

.slip-upload-preview { max-width: 260px; border-radius: 10px; margin-top: 10px; border: 1px solid var(--line); }

.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }
.mt-2 { margin-top: 16px; }

.login-hero {
  text-align: center;
  padding: 70px 20px;
  position: relative;
}
.login-hero img.brand-logo { height: 64px; margin-bottom: 18px; }
.login-hero h1 { font-size: 1.85rem; margin-bottom: 8px; }
.login-hero p { color: var(--text-muted); margin-bottom: 28px; }

::selection { background: var(--gold); color: var(--ink); }

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