/* ============================================================
   ระบบใบงานออนไลน์ - สไตล์ชีทหลัก
   ชุดสี: น้ำเงิน #4285F4 / แดง #EA4335 / เหลือง #FBBC05 / เขียว #34A853
   ฟอนต์: Mali (Google Fonts) - ปุ่ม/ตัวอักษรใหญ่ กระชับ สบายตา
   ============================================================ */

:root {
  --color-blue: #4285F4;
  --color-red: #EA4335;
  --color-yellow: #FBBC05;
  --color-green: #34A853;

  --color-blue-dark: #2f66c9;
  --color-red-dark: #c22c1f;
  --color-yellow-dark: #d99c00;
  --color-green-dark: #24824a;

  --text-main: #2b2b2b;
  --text-muted: #6b7280;
  --bg-page: #f5f7fb;
  --bg-card: #ffffff;
  --border-color: #e3e7ef;

  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;

  --shadow-soft: 0 4px 16px rgba(30, 41, 59, 0.08);
  --shadow-card: 0 2px 10px rgba(30, 41, 59, 0.06);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Mali', 'Sarabun', system-ui, sans-serif;
  background: var(--bg-page);
  color: var(--text-main);
  font-size: 19px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-weight: 700;
  margin: 0 0 .5em 0;
  line-height: 1.3;
}
h1 { font-size: 2rem; }
h2 { font-size: 1.6rem; }
h3 { font-size: 1.3rem; }

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

p { margin: 0 0 1em 0; }

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
}

.container-narrow {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------------- Navbar ---------------- */
.navbar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-card);
  position: sticky;
  top: 0;
  z-index: 50;
}
.navbar-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
}
.navbar-brand .dot {
  width: 14px; height: 14px; border-radius: 50%;
  background: conic-gradient(var(--color-blue) 0 25%, var(--color-red) 0 50%, var(--color-yellow) 0 75%, var(--color-green) 0 100%);
  display: inline-block;
}
.navbar-user {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 1rem;
  color: var(--text-muted);
}
.navbar-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.navbar-links a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-weight: 600;
}
.navbar-links a.active,
.navbar-links a:hover {
  background: #eef3ff;
  color: var(--color-blue);
  text-decoration: none;
}

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  font-size: 1.05rem;
  font-weight: 700;
  padding: 12px 22px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  color: #fff;
  background: var(--color-blue);
  transition: transform .05s ease, filter .15s ease;
  text-decoration: none;
  line-height: 1.2;
}
.btn:hover { filter: brightness(0.94); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .55; cursor: not-allowed; }

.btn-blue { background: var(--color-blue); }
.btn-red { background: var(--color-red); }
.btn-yellow { background: var(--color-yellow); color: #4a3800; }
.btn-green { background: var(--color-green); }
.btn-outline {
  background: #fff;
  color: var(--text-main);
  border: 2px solid var(--border-color);
}
.btn-outline:hover { border-color: var(--color-blue); color: var(--color-blue); }
.btn-sm { padding: 8px 14px; font-size: .92rem; border-radius: var(--radius-sm); }
.btn-lg { padding: 16px 30px; font-size: 1.25rem; border-radius: var(--radius-lg); }
.btn-block { width: 100%; }
.btn-icon { padding: 10px; border-radius: 50%; }

/* ---------------- Cards ---------------- */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 24px;
  margin-bottom: 20px;
}
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  border-radius: var(--radius-lg);
  padding: 22px;
  color: #fff;
  box-shadow: var(--shadow-soft);
}
.stat-card .num { font-size: 2.1rem; font-weight: 800; }
.stat-card .label { font-size: 1rem; opacity: .95; }
.stat-card.blue { background: linear-gradient(135deg, var(--color-blue), var(--color-blue-dark)); }
.stat-card.red { background: linear-gradient(135deg, var(--color-red), var(--color-red-dark)); }
.stat-card.yellow { background: linear-gradient(135deg, var(--color-yellow), var(--color-yellow-dark)); color: #4a3800; }
.stat-card.green { background: linear-gradient(135deg, var(--color-green), var(--color-green-dark)); }

/* ---------------- Login page ---------------- */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: linear-gradient(135deg, #eef3ff 0%, #fff 45%, #fff9ec 100%);
}
.login-card {
  width: 100%;
  max-width: 440px;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 36px 32px;
  text-align: center;
}
.login-card .logo-dot {
  width: 56px; height: 56px; border-radius: 50%;
  margin: 0 auto 14px auto;
  background: conic-gradient(var(--color-blue) 0 25%, var(--color-red) 0 50%, var(--color-yellow) 0 75%, var(--color-green) 0 100%);
}
.login-role-links {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 22px;
  flex-wrap: wrap;
}

/* ---------------- Forms ---------------- */
label {
  display: block;
  font-weight: 700;
  margin-bottom: 6px;
  font-size: 1.02rem;
}
.form-group { margin-bottom: 18px; text-align: left; }
input[type=text], input[type=password], input[type=number],
input[type=date], input[type=file], input[type=search], input[type=email],
select, textarea {
  width: 100%;
  font-family: inherit;
  font-size: 1.05rem;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--border-color);
  background: #fff;
  color: var(--text-main);
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--color-blue);
}
textarea { resize: vertical; min-height: 100px; }
.help-text { font-size: .92rem; color: var(--text-muted); margin-top: 4px; }

/* ---------------- Table ---------------- */
.table-wrap { overflow-x: auto; }
table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 1rem;
}
table.data-table th, table.data-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}
table.data-table th {
  background: #f8f9fc;
  font-weight: 700;
  white-space: nowrap;
}
table.data-table tr:hover td { background: #fafbff; }

/* ---------------- Badges ---------------- */
.badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: .92rem;
  font-weight: 700;
  color: #fff;
}
.badge-blue { background: var(--color-blue); }
.badge-red { background: var(--color-red); }
.badge-yellow { background: var(--color-yellow); color: #4a3800; }
.badge-green { background: var(--color-green); }
.badge-gray { background: #9aa3b2; }

/* ---------------- Alerts / Flash ---------------- */
.alert {
  padding: 14px 18px;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  font-weight: 600;
  border: 2px solid transparent;
}
.alert-success { background: #e9f8ef; color: var(--color-green-dark); border-color: var(--color-green); }
.alert-error { background: #fdecea; color: var(--color-red-dark); border-color: var(--color-red); }
.alert-info { background: #eaf1fe; color: var(--color-blue-dark); border-color: var(--color-blue); }
.alert-warning { background: #fff8e6; color: var(--color-yellow-dark); border-color: var(--color-yellow); }

/* ---------------- Utility ---------------- */
.flex { display: flex; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.gap-8 { gap: 8px; } .gap-12 { gap: 12px; } .gap-16 { gap: 16px; }
.mt-0 { margin-top: 0; } .mt-8 { margin-top: 8px; } .mt-16 { margin-top: 16px; } .mt-24 { margin-top: 24px; }
.mb-0 { margin-bottom: 0; } .mb-8 { margin-bottom: 8px; } .mb-16 { margin-bottom: 16px; } .mb-24 { margin-bottom: 24px; }
.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }
.w-full { width: 100%; }
.page-header { margin: 28px 0 20px 0; }
.empty-state {
  text-align: center;
  padding: 50px 20px;
  color: var(--text-muted);
}
.empty-state .big-emoji { font-size: 3rem; margin-bottom: 10px; }

/* ---------------- Responsive ---------------- */
@media (max-width: 640px) {
  body { font-size: 17px; }
  .card { padding: 18px; }
  .stat-card .num { font-size: 1.7rem; }
  .navbar-inner { padding: 10px 14px; }
}