:root {
  --ink: #14313b;
  --muted: #5e737a;
  --line: #dce8ea;
  --brand: #0f8a8d;
  --brand-dark: #0b6469;
  --soft: #eef7f5;
  --surface: #ffffff;
}

* { box-sizing: border-box; }
body { margin: 0; color: var(--ink); font-family: Arial, Helvetica, sans-serif; background: #f5f8f8; }
a { color: inherit; text-decoration: none; }
button { min-height: 42px; padding: 0 18px; border: 0; border-radius: 6px; background: var(--brand); color: #fff; font-weight: 800; cursor: pointer; }
input, textarea, select { width: 100%; min-height: 42px; border: 1px solid var(--line); border-radius: 6px; padding: 10px 12px; color: var(--ink); font: inherit; background: #fff; }
textarea { min-height: 120px; resize: vertical; }
label { display: grid; gap: 8px; color: #35565e; font-weight: 700; }

.login-page { min-height: 100vh; display: grid; place-items: center; background: linear-gradient(135deg, #eef7f5, #fff); }
.login-card { width: min(420px, calc(100% - 32px)); display: grid; gap: 16px; padding: 32px; border: 1px solid var(--line); border-radius: 8px; background: #fff; box-shadow: 0 24px 56px rgba(20, 49, 59, .12); }
.login-card h1 { margin: 0; }
.login-card p { margin: 0; color: var(--muted); }
.alert, .notice { padding: 14px 16px; border-radius: 6px; background: #fff0ee; color: #943226; font-weight: 700; }
.notice { background: #e8f7ee; color: #27683f; }

aside { position: fixed; inset: 0 auto 0 0; width: 240px; display: grid; align-content: start; gap: 8px; padding: 24px; background: #102f38; color: #d7e8ea; }
aside strong { margin-bottom: 18px; color: #fff; font-size: 20px; }
aside a { padding: 10px 12px; border-radius: 6px; }
aside a:hover { background: rgba(255,255,255,.1); }
aside a.active { background: rgba(255,255,255,.16); color: #fff; font-weight: 800; }
.admin-main { margin-left: 240px; padding: 32px; }
.admin-main header { display: flex; justify-content: space-between; gap: 24px; align-items: end; margin-bottom: 24px; }
.admin-main header h1 { margin: 4px 0 0; font-size: 36px; }
.admin-main header span, .admin-main header p { color: var(--muted); margin: 0; }
.admin-card { margin-bottom: 24px; padding: 24px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); }
.admin-card h2 { margin: 0 0 18px; }
.admin-card h3 { margin: 0 0 14px; }
form { display: grid; gap: 16px; }
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.row { padding: 14px; border: 1px solid var(--line); border-radius: 8px; background: #fbfdfd; }
.grid-3 { display: grid; grid-template-columns: 110px 1fr 1.4fr; gap: 12px; }
.grid-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.subform, .post-editor { padding: 18px; border: 1px solid var(--line); border-radius: 8px; background: #fbfdfd; }
.dashboard-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 24px; }
.dash-card { min-height: 150px; display: grid; align-content: start; gap: 10px; padding: 22px; border: 1px solid var(--line); border-radius: 8px; background: #fff; box-shadow: 0 18px 40px rgba(20, 49, 59, .08); }
.dash-card strong { font-size: 22px; color: var(--brand-dark); }
.dash-card span, .muted { color: var(--muted); }
.status-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 18px; }
.status-grid span { padding: 14px; border: 1px solid var(--line); border-radius: 8px; background: #fbfdfd; font-weight: 700; }
.list-table { display: grid; gap: 10px; }
.list-table a { display: flex; justify-content: space-between; gap: 16px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 8px; background: #fbfdfd; }
.list-table span { color: var(--muted); }
.media-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.media-grid div { display: grid; gap: 8px; padding: 10px; border: 1px solid var(--line); border-radius: 8px; background: #fbfdfd; }
.media-grid img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 6px; background: var(--soft); }
.media-preview { margin: 10px 0 8px; padding: 12px; border: 1px solid var(--line); border-radius: 8px; background: #fbfdfd; }
.media-preview img { width: min(520px, 100%); max-height: 420px; object-fit: contain; border-radius: 6px; background: var(--soft); }
code { overflow-wrap: anywhere; color: #244951; }
.rich-editor { min-height: 260px; font-family: Arial, Helvetica, sans-serif; line-height: 1.6; }
.admin-tabs { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 22px; }
.admin-tabs a { min-width: 90px; min-height: 42px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--brand); border-radius: 6px; color: var(--brand-dark); font-weight: 900; }
.admin-tabs a.active { background: var(--brand); color: #fff; }

@media (max-width: 980px) {
  aside { position: static; width: auto; grid-template-columns: repeat(2, 1fr); }
  .admin-main { margin-left: 0; padding: 18px; }
  .admin-main header, .grid, .grid-3, .grid-5, .dashboard-grid, .status-grid, .media-grid { display: grid; grid-template-columns: 1fr; }
}