/* ========================================================================
   Certifi iAmbulance — Premium Dark (neon glow) Theme
   Red = Primary brand · Blue = Info/Secondary · Neutral = Structure
   Light: พื้นเทานวล + เฟรมลอย (twin-glow) · Dark: ดำลึก + neon glow
   แดง+น้ำเงิน แยกสีชัด สมดุล 50/50 — ไม่ผสมเป็น purple
   ======================================================================== */

:root, [data-theme="light"] {
  /* Neutral base — หน้าเป็นเทานวล (ไม่ขาวล้วน) เฟรมขาวจึงลอยเด่น */
  --bg: #E9EBF2;
  --bg-soft: linear-gradient(135deg, #E7E9F2 0%, #EBEAF1 50%, #E6EBF4 100%);
  --surface: #FFFFFF;
  --surface-2: #F2F3FA;
  --surface-elev: #FFFFFF;
  --border: #E3E5F0;
  --border-strong: #D2D5E3;
  --text: #15151F;
  --text-muted: #6B6B82;
  --text-subtle: #9A9AAE;

  /* Red (primary brand — premium rose-red) */
  --primary: #E11D48;
  --primary-light: #F43F5E;
  --primary-hover: #BE123C;
  --primary-soft: #FB7185;
  --primary-bg-soft: #FCE7EC;
  --primary-border: #FBCFD8;

  /* Blue (info/secondary) */
  --secondary: #2563EB;
  --secondary-light: #3B82F6;
  --secondary-hover: #1D4ED8;
  --secondary-soft: #93C5FD;
  --secondary-bg-soft: #DDE8FF;
  --secondary-border: #C3D7FF;

  /* Gradients — single-color ONLY (no purple mix) */
  --gradient: linear-gradient(135deg, #F43F5E 0%, #E11D48 100%);
  --gradient-blue: linear-gradient(135deg, #3B82F6 0%, #2563EB 100%);
  --gradient-soft: linear-gradient(135deg, #FCE7EC 0%, #FBCFD8 100%);
  --gradient-soft-blue: linear-gradient(135deg, #DDE8FF 0%, #C3D7FF 100%);

  /* Semantic */
  --success: #15803D;
  --success-bg: #DCFCE7;
  --warning: #B45309;
  --warning-bg: #FEF3C7;
  --danger: #E11D48;
  --danger-bg: #FCE7EC;
  --info: #2563EB;
  --info-bg: #DDE8FF;

  /* Shadows — twin-glow แดง+น้ำเงิน ให้การ์ดลอยจากพื้นเทา */
  --shadow-sm: 0 2px 6px -2px rgba(20,20,45,.10);
  --shadow-md: 0 16px 38px -20px rgba(20,20,45,.24), 0 6px 16px -12px rgba(225,29,72,.10);
  --shadow-lg: 0 30px 70px -28px rgba(225,29,72,.20), 0 22px 56px -34px rgba(37,99,235,.18);
  --btn-glow: 0 8px 22px -8px rgba(225,29,72,.40);
  --btn-glow-blue: 0 8px 22px -8px rgba(37,99,235,.36);

  /* Layout */
  --sidebar-bg: #FFFFFF;
  --sidebar-active: var(--primary-bg-soft);
  --topbar-bg: rgba(255,255,255,.85);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
}

[data-theme="dark"] {
  /* Neutral base — near-black premium + ambient glow แดง/น้ำเงินมุมจอ */
  --bg:
    radial-gradient(900px 480px at 10% -8%, rgba(255,59,99,.10), transparent 60%),
    radial-gradient(900px 480px at 92% 6%, rgba(79,140,255,.10), transparent 60%),
    #06060D;
  --bg-soft: linear-gradient(180deg, #0A0A12 0%, #050509 100%);
  --surface: #14141C;
  --surface-2: #1B1B28;
  --surface-elev: #16161F;
  --border: #2A2A3C;
  --border-strong: #3A3A50;
  --text: #F5F5FB;
  --text-muted: #9C9CB8;
  --text-subtle: #6E6E86;

  /* Red (neon on dark) */
  --primary: #FF3B63;
  --primary-light: #FF6B86;
  --primary-hover: #FF6B86;
  --primary-soft: rgba(255,59,99,.20);
  --primary-bg-soft: rgba(255,59,99,.14);
  --primary-border: rgba(255,59,99,.40);

  /* Blue (neon on dark) */
  --secondary: #4F8CFF;
  --secondary-light: #7DA9FF;
  --secondary-hover: #7DA9FF;
  --secondary-soft: rgba(79,140,255,.20);
  --secondary-bg-soft: rgba(79,140,255,.14);
  --secondary-border: rgba(79,140,255,.40);

  /* Gradients — neon single-color (ไม่ผสมเป็นม่วง) */
  --gradient: linear-gradient(135deg, #FF3B63 0%, #D81E45 100%);
  --gradient-blue: linear-gradient(135deg, #4F8CFF 0%, #2563EB 100%);
  --gradient-soft: linear-gradient(135deg, rgba(255,59,99,.20) 0%, rgba(255,59,99,.06) 100%);
  --gradient-soft-blue: linear-gradient(135deg, rgba(79,140,255,.20) 0%, rgba(79,140,255,.06) 100%);

  --success: #4ADE80;
  --success-bg: rgba(74,222,128,.15);
  --warning: #FBBF24;
  --warning-bg: rgba(251,191,36,.15);
  --danger: #FF6B86;
  --danger-bg: rgba(255,59,99,.16);
  --info: #7DA9FF;
  --info-bg: rgba(79,140,255,.15);

  --shadow-sm: 0 1px 2px rgba(0,0,0,.4);
  --shadow-md: 0 16px 40px -22px rgba(0,0,0,.75);
  --shadow-lg: 0 0 70px -12px rgba(255,59,99,.18), 0 0 70px -12px rgba(79,140,255,.14);
  --btn-glow: 0 6px 26px -6px rgba(255,59,99,.6);
  --btn-glow-blue: 0 6px 26px -6px rgba(79,140,255,.6);

  --sidebar-bg: #0F0F18;
  --sidebar-active: rgba(255,59,99,.16);
  --topbar-bg: rgba(8,8,16,.85);
}

/* === Reset & base === */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  font-family: 'Prompt', 'Sarabun', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  transition: background-color .2s, color .2s;
  font-size: 14px;
  line-height: 1.6;
}
a { color: var(--secondary); text-decoration: none; }
a:hover { color: var(--secondary-hover); text-decoration: underline; }
button { font-family: inherit; cursor: pointer; }

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
[data-theme="dark"] .gradient-text { filter: drop-shadow(0 0 10px rgba(255,59,99,.45)); }

.gradient-text-blue {
  background: var(--gradient-blue);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
[data-theme="dark"] .gradient-text-blue { filter: drop-shadow(0 0 10px rgba(79,140,255,.45)); }

/* === App Layout === */
.app-layout { display: flex; min-height: 100vh; }
.sidebar {
  width: 260px; flex-shrink: 0;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  position: sticky; top: 0; height: 100vh;
  overflow-y: auto;
  z-index: 20;
  transition: width .2s;
}

.brand {
  padding: 18px 20px;
  display: flex; align-items: center; gap: 12px;
  border-bottom: 1px solid var(--border);
}
.brand-logo {
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--gradient);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 6px 16px -4px rgba(225,29,72,.32);
}
[data-theme="dark"] .brand-logo { box-shadow: 0 0 22px rgba(255,59,99,.5); }
.brand-text { display: flex; flex-direction: column; min-width: 0; }
.brand-name { font-weight: 600; font-size: 14px; }
.brand-name .gradient-text { font-weight: 700; }
.brand-sub { font-size: 10px; color: var(--text-muted); letter-spacing: .05em; }

.sidebar-nav { flex: 1; padding: 12px 8px; }
.sidebar-section-title {
  font-size: 10px; font-weight: 600; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: .08em;
  padding: 14px 12px 6px;
}
.sidebar-link {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px; margin: 2px 0;
  border-radius: var(--radius-md);
  color: var(--text-muted); font-size: 13px;
  text-decoration: none;
  transition: all .12s;
}
.sidebar-link:hover { background: var(--surface-2); color: var(--text); text-decoration: none; }
.sidebar-link i { font-size: 18px; flex-shrink: 0; }
.sidebar-link.active {
  background: var(--sidebar-active);
  color: var(--primary);
  font-weight: 500;
}
.sidebar-link .badge-sm {
  margin-left: auto; font-size: 10px; padding: 1px 6px;
  background: var(--gradient); color: white; border-radius: 8px;
}

.sidebar-footer {
  padding: 12px; border-top: 1px solid var(--border);
}

/* === Main area === */
.main-area { flex: 1; display: flex; flex-direction: column; min-width: 0; background: var(--bg); }
.topbar {
  height: 60px; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
  background: var(--topbar-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
.topbar-left { display: flex; align-items: center; gap: 14px; }
.topbar-title { font-size: 16px; font-weight: 600; }
.topbar-actions { display: flex; align-items: center; gap: 8px; }

.btn-icon {
  width: 38px; height: 38px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-md);
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--text); font-size: 18px;
  transition: all .12s; cursor: pointer;
}
.btn-icon:hover { border-color: var(--secondary); color: var(--secondary); }

.user-pill {
  display: flex; align-items: center; gap: 10px;
  padding: 5px 14px 5px 5px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 999px; font-size: 13px;
}
.user-avatar {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--gradient); color: white;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 500;
  flex-shrink: 0;
}
.user-name { font-weight: 500; }
.user-role { color: var(--text-muted); font-size: 11px; }

.content { flex: 1; padding: 28px; max-width: 100%; }
.content-narrow { max-width: 880px; margin: 0 auto; }
.content-header { margin-bottom: 24px; }
.content-title { font-size: 22px; font-weight: 600; margin: 0; }
.content-subtitle { color: var(--text-muted); margin: 4px 0 0; font-size: 14px; }

/* === Cards === */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-md);
}
[data-theme="dark"] .card { box-shadow: 0 16px 40px -24px rgba(0,0,0,.8), inset 0 1px 0 rgba(255,255,255,.04); }
.card-title { font-size: 16px; font-weight: 600; margin: 0 0 12px; }
.card-header {
  display: flex; align-items: center; justify-content: space-between;
  margin: -20px -20px 16px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
}
.card-header h3 { margin: 0; font-size: 15px; font-weight: 600; }

/* Stat card — neutral surface, red icon */
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
}
.stat-icon-wrap {
  width: 44px; height: 44px; border-radius: 12px;
  background: var(--primary-bg-soft);
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 12px;
}
.stat-icon-wrap i { font-size: 22px; color: var(--primary); }

/* Blue variant for info-related stats */
.stat-icon-wrap.blue { background: var(--secondary-bg-soft); }
.stat-icon-wrap.blue i { color: var(--secondary); }

.stat-value { font-size: 28px; font-weight: 700; margin: 0; }
.stat-label { color: var(--text-muted); font-size: 13px; margin: 2px 0 0; }
.stat-delta { font-size: 11px; margin-top: 6px; }
.stat-delta.up { color: var(--success); }
.stat-delta.down { color: var(--danger); }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}

/* === Buttons === */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 9px 18px; border: 1px solid transparent; border-radius: var(--radius-md);
  font-size: 13px; font-weight: 500;
  cursor: pointer; transition: all .12s;
  text-decoration: none;
}
.btn:hover { text-decoration: none; }

/* Primary = red gradient */
.btn-primary {
  background: var(--gradient); color: white; border: none;
  box-shadow: var(--btn-glow);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px -4px rgba(225,29,72,.45);
  color: white;
}
[data-theme="dark"] .btn-primary:hover { box-shadow: 0 0 42px -2px rgba(255,59,99,.65); }

/* Blue = secondary / info */
.btn-info {
  background: var(--gradient-blue); color: white; border: none;
  box-shadow: var(--btn-glow-blue);
}
.btn-info:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px -4px rgba(37,99,235,.45);
  color: white;
}
[data-theme="dark"] .btn-info:hover { box-shadow: 0 0 42px -2px rgba(79,140,255,.65); }

.btn-ghost {
  background: var(--surface); color: var(--text); border-color: var(--border);
}
.btn-ghost:hover { border-color: var(--text-muted); color: var(--text); }

.btn-danger {
  background: var(--danger); color: white; border: none;
}
.btn-danger:hover { background: var(--primary-hover); color: white; }

.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-lg { padding: 12px 24px; font-size: 15px; }

/* === Forms === */
.form-group { margin-bottom: 16px; }
.form-label {
  display: block; font-size: 13px; font-weight: 500; color: var(--text);
  margin-bottom: 6px;
}
.form-label .required { color: var(--danger); }
.form-input, .form-select, .form-textarea {
  width: 100%; padding: 10px 14px;
  background: var(--surface); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius-md);
  font-size: 13px; font-family: inherit; transition: all .12s;
}
/* Focus = blue ring (cool, calming) */
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none; border-color: var(--secondary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.20);
}
.form-textarea { min-height: 90px; resize: vertical; }
.form-hint { font-size: 11px; color: var(--text-muted); margin-top: 4px; }
.form-error { font-size: 12px; color: var(--danger); margin-top: 4px; }

/* ช่องที่ validate ไม่ผ่าน — ไฮไลต์ขอบแดง + สั่นเรียกความสนใจ */
.field-invalid,
.form-input.field-invalid, .form-select.field-invalid, .form-textarea.field-invalid {
  border-color: var(--danger) !important;
  box-shadow: 0 0 0 3px rgba(225,29,72,.20) !important;
  animation: fieldShake .3s ease;
}
@keyframes fieldShake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* Template picker — slider การ์ด preview (เลือกแล้ว glow เขียว) */
.tpl-slider { display: flex; gap: 14px; overflow-x: auto; padding: 6px 2px 12px; scroll-snap-type: x proximity; }
.tpl-card {
  flex: 0 0 210px; scroll-snap-align: start;
  border: 2px solid var(--border); border-radius: 12px; overflow: hidden;
  cursor: pointer; background: var(--surface); transition: border-color .15s, box-shadow .15s, transform .12s;
}
.tpl-card:hover { border-color: var(--text-muted); transform: translateY(-2px); }
.tpl-card.selected { border-color: #22C55E; box-shadow: 0 0 0 2px #22C55E, 0 0 18px rgba(34,197,94,.55); }
.tpl-card-thumb { aspect-ratio: 1.414/1; background: #F4F4F5; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.tpl-card-thumb img { width: 100%; height: 100%; object-fit: contain; }
.tpl-card-default { color: var(--text-muted); font-size: 32px; background: repeating-conic-gradient(#f4f4f5 0% 25%, #fff 0% 50%) 50% / 16px 16px; }
.tpl-card-noimg { color: var(--text-subtle); font-size: 28px; }
.tpl-card-name { padding: 8px 10px; font-size: 12px; font-weight: 500; text-align: center; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tpl-card.selected .tpl-card-name { color: #16A34A; }

/* Confirm-delete modal (template / signature) */
.del-modal { display: none; position: fixed; inset: 0; z-index: 9999; background: rgba(9,9,11,.7); backdrop-filter: blur(3px); align-items: center; justify-content: center; padding: 16px; }
.del-modal.open { display: flex; }
.del-box { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 28px; max-width: 460px; width: 100%; text-align: center; box-shadow: 0 24px 60px -16px rgba(0,0,0,.5); }
.del-icon { width: 56px; height: 56px; border-radius: 50%; background: var(--danger-bg); color: var(--danger); display: inline-flex; align-items: center; justify-content: center; font-size: 30px; margin-bottom: 12px; }
.del-box h3 { margin: 0 0 8px; font-size: 18px; }
.del-box p { color: var(--text-muted); font-size: 14px; line-height: 1.7; margin: 0 0 16px; }
.del-check { display: flex; align-items: center; gap: 8px; justify-content: center; padding: 12px; background: var(--danger-bg); border: 1px solid var(--danger); border-radius: 10px; margin-bottom: 16px; cursor: pointer; font-size: 13px; color: var(--danger); font-weight: 500; }
.del-check input { width: 18px; height: 18px; accent-color: var(--danger); flex-shrink: 0; }
.del-actions { display: flex; gap: 10px; justify-content: center; }
.del-actions .btn:disabled { opacity: .5; cursor: not-allowed; }

/* === Tables === */
.table-wrap { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; }
.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table thead { background: var(--surface-2); }
.table th { text-align: left; padding: 12px 16px; font-weight: 500; color: var(--text-muted); font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
.table td { padding: 12px 16px; border-top: 1px solid var(--border); }
.table tbody tr:hover { background: var(--surface-2); }

/* === Alerts === */
.alert {
  padding: 12px 16px; border-radius: var(--radius-md);
  display: flex; align-items: flex-start; gap: 10px;
  margin-bottom: 16px; font-size: 13px;
  border: 1px solid;
}
.alert i { font-size: 18px; flex-shrink: 0; margin-top: 1px; }
.alert-success { background: var(--success-bg); color: var(--success); border-color: var(--success); }
.alert-danger { background: var(--danger-bg); color: var(--danger); border-color: var(--danger); }
.alert-warning { background: var(--warning-bg); color: var(--warning); border-color: var(--warning); }
.alert-info { background: var(--info-bg); color: var(--info); border-color: var(--info); }

/* === Badges === */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 10px; border-radius: 999px;
  font-size: 11px; font-weight: 500;
}
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.badge-info { background: var(--info-bg); color: var(--info); }
.badge-neutral { background: var(--surface-2); color: var(--text-muted); }

/* === Empty state === */
.empty-state {
  text-align: center; padding: 48px 24px;
  border: 1px dashed var(--border); border-radius: var(--radius-lg);
  color: var(--text-muted);
}
.empty-state i { font-size: 56px; color: var(--primary); margin-bottom: 12px; }
.empty-state h3 { color: var(--text); margin: 0 0 6px; font-size: 17px; }

/* === Responsive helpers (ใช้แทน inline grid ที่ fixed) === */
.filter-bar { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 12px; align-items: end; }
.split-side { display: grid; grid-template-columns: 240px 1fr; gap: 20px; align-items: start; }

/* === Mobile === */
.menu-toggle { display: none; }
.sidebar-overlay { display: none; }

@media (max-width: 1024px) {
  .sidebar { width: 72px; }
  .sidebar .sidebar-link span,
  .sidebar .sidebar-section-title,
  .sidebar .brand-text { display: none; }
  .sidebar .sidebar-link { justify-content: center; padding: 12px; }
  .sidebar .brand { justify-content: center; padding: 18px 12px; }
}

@media (max-width: 768px) {
  .sidebar {
    position: fixed; left: -260px; width: 260px;
    transition: left .25s;
  }
  .sidebar.open { left: 0; }
  .sidebar .sidebar-link span,
  .sidebar .sidebar-section-title,
  .sidebar .brand-text { display: inline; }
  .sidebar .sidebar-link { justify-content: flex-start; padding: 10px 12px; }
  .sidebar .brand { justify-content: flex-start; padding: 18px 20px; }
  .sidebar-overlay {
    display: block; position: fixed; inset: 0;
    background: rgba(0,0,0,.4); z-index: 15;
    opacity: 0; visibility: hidden; transition: all .2s;
  }
  .sidebar-overlay.open { opacity: 1; visibility: visible; }
  .menu-toggle { display: inline-flex; }
  .content { padding: 16px; }
  .user-name, .user-role { display: none; }
  .user-pill { padding: 5px; }

  /* ตารางเลื่อนแนวนอนได้แทนล้นจอ */
  .table { display: block; overflow-x: auto; white-space: nowrap; -webkit-overflow-scrolling: touch; }
  /* ฟอร์ม 2 คอลัมน์ → เรียงตั้ง */
  .form-row { grid-template-columns: 1fr; }
  /* layout แบบ side + content → เรียงตั้ง */
  .split-side { grid-template-columns: 1fr; }
  /* แถวห้องเรียนใน wizard (inline grid) */
  .room-row { grid-template-columns: 1fr !important; }
  /* หัวข้อหน้า + ปุ่ม ให้เว้นระยะเมื่อ wrap */
  .content-header { gap: 12px; }
}