/* =====================================================
   โรงเรียนบ้านสองแพรก – โทนฟ้า-ขาว
   ===================================================== */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* ── สีหลัก ── */
  --blue:        #1A85C8;
  --blue-dark:   #1268A0;
  --blue-deeper: #0D4F7A;
  --blue-light:  #E8F4FD;
  --blue-mid:    #BAE0F7;
  --blue-soft:   #D0EBFA;

  /* ── ข้อความ ── */
  --text-1: #0D2D45;
  --text-2: #2E5A78;
  --text-3: #6B9BB8;
  --white:  #FFFFFF;

  /* ── พื้นหลัง ── */
  --bg:     #F0F8FF;
  --border: #C5DEF0;

  /* ── chip สี ── */
  --chip-academic-bg: #C8E6FA; --chip-academic-tx: #0D4F7A;
  --chip-sport-bg:    #C8F0E0; --chip-sport-tx:    #0A4D30;
  --chip-culture-bg:  #FAD4E8; --chip-culture-tx:  #6B1240;
  --chip-holiday-bg:  #FDE8C2; --chip-holiday-tx:  #7A4200;
  --chip-meeting-bg:  #D4E8FA; --chip-meeting-tx:  #0D3D6B;
  --chip-activity-bg:  #DDF4DC; --chip-activity-tx:  #1A5C1A;

  --radius: 10px;
}

body {
  font-family: 'Sarabun', 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text-1);
  font-size: 15px;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }

/* ─── Navbar ─────────────────────────────────────────── */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  height: 66px;
  background: linear-gradient(135deg, var(--blue-deeper) 0%, var(--blue-dark) 60%, var(--blue) 100%);
  box-shadow: 0 2px 12px rgba(13,79,122,0.25);
  position: sticky;
  top: 0;
  z-index: 100;
  overflow: hidden;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-logo {
  width: 48px;
  height: 48px;
  max-width: 48px;
  max-height: 48px;
  object-fit: contain;
  flex-shrink: 0;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  padding: 2px;
}
.nav-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  display: block;
  line-height: 1.25;
  letter-spacing: 0.01em;
}
.nav-sub {
  font-size: 11px;
  color: rgba(255,255,255,0.7);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-user {
  font-size: 13px;
  color: rgba(255,255,255,0.9);
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-back {
  font-size: 14px;
  color: rgba(255,255,255,0.85);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color 0.15s;
}
.nav-back:hover { color: var(--white); }

/* ─── Buttons ─────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 7px 16px;
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
  border: 1px solid transparent;
  font-family: inherit;
  font-weight: 500;
  transition: all 0.15s;
}
.btn-primary {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
  box-shadow: 0 1px 4px rgba(26,133,200,0.3);
}
.btn-primary:hover {
  background: var(--blue-dark);
  border-color: var(--blue-dark);
  box-shadow: 0 2px 8px rgba(26,133,200,0.4);
}
.btn-ghost {
  background: rgba(255,255,255,0.15);
  color: var(--white);
  border-color: rgba(255,255,255,0.35);
  backdrop-filter: blur(4px);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.25);
  border-color: rgba(255,255,255,0.6);
}
/* ghost ในหน้า content (พื้นขาว) */
.page-wrap .btn-ghost,
.form-card .btn-ghost,
.detail-card .btn-ghost {
  background: transparent;
  color: var(--text-2);
  border-color: var(--border);
}
.page-wrap .btn-ghost:hover,
.form-card .btn-ghost:hover {
  background: var(--blue-light);
  border-color: var(--blue);
  color: var(--blue-dark);
}
.btn-danger {
  background: transparent;
  color: #C0392B;
  border-color: #F0A090;
}
.btn-danger:hover { background: #FDF0EE; }
.btn-icon {
  background: var(--white);
  color: var(--blue-dark);
  border-color: var(--border);
  font-size: 20px;
  padding: 4px 13px;
  line-height: 1;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.btn-icon:hover {
  background: var(--blue-light);
  border-color: var(--blue);
  color: var(--blue);
}
.btn-sm  { padding: 5px 12px; font-size: 12px; }
.btn-block { width: 100%; justify-content: center; padding: 10px; font-size: 15px; }

/* ─── Admin badge ─────────────────────────────────────── */
.admin-badge {
  background: rgba(255,255,255,0.2);
  color: var(--white);
  font-size: 11px;
  padding: 2px 9px;
  border-radius: 20px;
  font-weight: 500;
  border: 1px solid rgba(255,255,255,0.35);
  margin-left: 4px;
}
.page-wrap .admin-badge,
.form-card .admin-badge {
  background: var(--blue-light);
  color: var(--blue-dark);
  border-color: var(--blue-mid);
}

/* ─── Page layout ──────────────────────────────────────── */
.page-wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 20px;
}
.page-narrow { max-width: 640px; }

/* ─── Toolbar ──────────────────────────────────────────── */
.cal-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  flex-wrap: wrap;
  gap: 10px;
}
.cal-nav-group { display: flex; align-items: center; gap: 12px; }
.cal-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--blue-deeper);
  min-width: 190px;
  text-align: center;
}
.cal-toolbar-right { display: flex; align-items: center; gap: 8px; }

/* ─── Legend ───────────────────────────────────────────── */
.legend-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 18px;
  padding: 10px 14px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.legend-item { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text-2); }
.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; flex-shrink: 0; }
.dot-academic { background: #1A85C8; }
.dot-sport    { background: #1A9E6A; }
.dot-culture  { background: #C8457A; }
.dot-holiday  { background: #E07A15; }
.dot-meeting  { background: #4A7DC8; }
.dot-activity { background: #2DA82D; }

/* ─── Calendar grid ────────────────────────────────────── */
.cal-grid-wrap {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(26,133,200,0.08);
}
.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); }
.cal-head {
  font-size: 12px;
  font-weight: 600;
  color: var(--white);
  text-align: center;
  padding: 10px 4px;
  background: linear-gradient(180deg, var(--blue) 0%, var(--blue-dark) 100%);
  border-right: 1px solid rgba(255,255,255,0.15);
  letter-spacing: 0.02em;
}
.cal-head:last-child { border-right: none; }
.cal-cell {
  min-height: 100px;
  padding: 6px 6px 4px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  transition: background 0.1s;
}
.cal-cell:nth-child(7n) { border-right: none; }
.cal-cell:hover { background: #F5FBFF; }
.cal-empty { background: #F7FBFF; }
.cal-today { background: #EAF5FD; }
.day-num { font-size: 12px; color: var(--text-3); margin-bottom: 4px; font-weight: 500; }
.today-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--blue);
  color: var(--white);
  border-radius: 50%;
  font-size: 12px;
  font-weight: 700;
  box-shadow: 0 1px 4px rgba(26,133,200,0.4);
}

/* ─── Chips ─────────────────────────────────────────────── */
.chip {
  display: block;
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
  transition: opacity 0.1s, transform 0.1s;
}
.chip:hover { opacity: 0.8; transform: translateX(1px); }
.chip-academic { background: var(--chip-academic-bg); color: var(--chip-academic-tx); }
.chip-sport    { background: var(--chip-sport-bg);    color: var(--chip-sport-tx); }
.chip-culture  { background: var(--chip-culture-bg);  color: var(--chip-culture-tx); }
.chip-holiday  { background: var(--chip-holiday-bg);  color: var(--chip-holiday-tx); }
.chip-meeting  { background: var(--chip-meeting-bg);  color: var(--chip-meeting-tx); }
.chip-activity { background: var(--chip-activity-bg); color: var(--chip-activity-tx); }
.chip-more { font-size: 11px; color: var(--text-3); padding: 1px 4px; cursor: pointer; }
.chip-more:hover { color: var(--blue); }

/* ─── Alerts ────────────────────────────────────────────── */
.alert { padding: 11px 16px; border-radius: 8px; font-size: 13px; margin-bottom: 18px; }
.alert-error   { background: #FEF0EE; color: #B53020; border: 1px solid #F5B0A0; }
.alert-success { background: #EAF7EE; color: #1A6E30; border: 1px solid #90D8A8; }

/* ─── Form card ─────────────────────────────────────────── */
.form-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: 0 2px 12px rgba(26,133,200,0.08);
}
.form-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--blue-deeper);
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--blue-light);
}
.form-title svg { color: var(--blue); }
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 13px;
  color: var(--text-2);
  margin-bottom: 6px;
  font-weight: 600;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text-1);
  background: var(--white);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(26,133,200,0.12);
}
.form-group textarea { resize: vertical; min-height: 90px; }
.form-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.required { color: #E02020; }
.hint { font-size: 11px; color: var(--text-3); font-weight: 400; }
.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

/* ─── Detail card ───────────────────────────────────────── */
.detail-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: 0 2px 12px rgba(26,133,200,0.08);
}
.detail-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 14px;
}
.detail-actions-top { display: flex; gap: 8px; }
.detail-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--blue-deeper);
  margin-bottom: 20px;
  line-height: 1.3;
}
.detail-meta {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
  padding: 14px 16px;
  background: var(--blue-light);
  border-radius: 8px;
  border: 1px solid var(--blue-soft);
}
.meta-row { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-2); }
.meta-row svg { flex-shrink: 0; color: var(--blue); }
.detail-desc {
  font-size: 14px;
  color: var(--text-1);
  line-height: 1.7;
  padding: 16px;
  background: var(--bg);
  border-radius: 8px;
  margin-bottom: 20px;
  border: 1px solid var(--border);
}
.detail-footer {
  font-size: 12px;
  color: var(--text-3);
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* ─── Badges ────────────────────────────────────────────── */
.badge {
  display: inline-block;
  font-size: 12px;
  padding: 4px 14px;
  border-radius: 20px;
  font-weight: 600;
}
.badge-academic { background: var(--chip-academic-bg); color: var(--chip-academic-tx); }
.badge-sport    { background: var(--chip-sport-bg);    color: var(--chip-sport-tx); }
.badge-culture  { background: var(--chip-culture-bg);  color: var(--chip-culture-tx); }
.badge-holiday  { background: var(--chip-holiday-bg);  color: var(--chip-holiday-tx); }
.badge-meeting  { background: var(--chip-meeting-bg);  color: var(--chip-meeting-tx); }
.badge-activity { background: var(--chip-activity-bg); color: var(--chip-activity-tx); }

/* ─── Login page ─────────────────────────────────────────── */
.login-page {
  background: linear-gradient(160deg, var(--blue-deeper) 0%, var(--blue) 50%, var(--blue-mid) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}
.login-wrapper { width: 100%; max-width: 420px; padding: 20px; }
.login-card {
  background: var(--white);
  border-radius: 16px;
  padding: 40px 36px;
  text-align: center;
  box-shadow: 0 12px 48px rgba(13,79,122,0.35);
}
.login-logo { margin-bottom: 14px; }
.login-logo img {
  width: 110px;
  height: 110px;
  object-fit: contain;
}
.login-card h1 {
  font-size: 18px;
  font-weight: 700;
  color: var(--blue-deeper);
  margin-bottom: 3px;
}
.login-sub { font-size: 13px; color: var(--text-3); margin-bottom: 28px; }
.login-card .form-group { text-align: left; }
.login-divider {
  height: 1px;
  background: var(--border);
  margin: 20px 0;
}
.login-back { margin-top: 20px; text-align: center; font-size: 13px; }
.login-back a { color: var(--blue); font-weight: 500; }
.login-back a:hover { text-decoration: underline; }

/* ─── Import page ───────────────────────────────────────── */
.import-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 0 2px 12px rgba(26,133,200,0.08);
}
.import-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--blue-deeper);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}
.import-title svg { color: var(--blue); }
.import-desc  { font-size: 13px; color: var(--text-3); margin-bottom: 24px; }
.year-form    { display: flex; align-items: center; gap: 10px; margin-bottom: 24px; }
.year-form select {
  width: 190px;
  padding: 8px 12px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  outline: none;
}
.year-form select:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(26,133,200,0.12); }
.holiday-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.holiday-table th {
  text-align: left;
  padding: 10px 12px;
  background: linear-gradient(180deg, var(--blue) 0%, var(--blue-dark) 100%);
  font-size: 12px;
  color: var(--white);
  font-weight: 600;
}
.holiday-table td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.holiday-table tr:last-child td { border-bottom: none; }
.holiday-table tr:hover td { background: var(--blue-light); }
.row-exists td { opacity: .42; }
.name-th   { font-weight: 600; color: var(--text-1); }
.tag-new   { display:inline-block; font-size:11px; padding:3px 10px; border-radius:20px; background:var(--chip-holiday-bg); color:var(--chip-holiday-tx); font-weight:600; }
.tag-exist { display:inline-block; font-size:11px; padding:3px 10px; border-radius:20px; background:var(--bg); color:var(--text-3); border:1px solid var(--border); }
.import-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 10px;
}
.count-note { font-size: 13px; color: var(--text-3); }
.info-box {
  margin-top: 16px;
  padding: 14px 16px;
  background: var(--blue-light);
  border: 1px solid var(--blue-soft);
  border-radius: 8px;
  font-size: 13px;
  color: var(--text-2);
}

/* ─── Responsive ─────────────────────────────────────────── */
@media (max-width: 700px) {
  .navbar { padding: 0 16px; height: 58px; }
  .nav-logo { width: 36px; height: 36px; }
  .nav-title { font-size: 14px; }
  .cal-cell { min-height: 64px; }
  .cal-title { font-size: 17px; min-width: auto; }
  .form-row-2 { grid-template-columns: 1fr; }
  .page-wrap { padding: 16px 12px; }
  .cal-head { font-size: 10px; padding: 7px 2px; }
  .detail-title { font-size: 18px; }
  .login-card { padding: 30px 22px; }
}