:root {
  --primary: #2E7D4F;
  --primary-dark: #1F5A38;
  --ink: #1A1D1F;
  --ink-soft: #6B7177;
  --surface: #FFFFFF;
  --surface-sunken: #F3F5F4;
  --line: #E3E6E4;
  --danger: #C0392B;
  --radius: 10px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; font-family: var(--font); color: var(--ink); background: var(--surface-sunken); }
a { color: var(--primary); }

.btn { display: inline-flex; align-items: center; gap: 6px; padding: 9px 16px; border-radius: var(--radius); border: 1px solid transparent; font: inherit; font-weight: 600; font-size: 0.88rem; cursor: pointer; text-decoration: none; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-ghost { background: var(--surface); border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { background: var(--surface-sunken); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 6px 12px; font-size: 0.8rem; }

/* Login */
.login-html, .login-body { height: 100%; }
.login-body { margin: 0; display: flex; align-items: center; justify-content: center; position: relative; background: var(--primary-dark); }
.login-bg { position: absolute; inset: 0; background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%); }
.login-card { position: relative; z-index: 1; width: min(360px, calc(100vw - 48px)); background: var(--surface); border-radius: 16px; padding: 36px 32px; box-shadow: 0 30px 60px rgba(0,0,0,0.25); }
.login-mark { font-size: 1.3rem; font-weight: 700; color: var(--primary); margin-bottom: 4px; }
.login-mark-img { max-height: 40px; }
.login-sub { color: var(--ink-soft); font-size: 0.86rem; margin: 0 0 22px; }
.login-form { display: flex; flex-direction: column; gap: 6px; }
.login-form label { font-size: 0.8rem; font-weight: 600; color: var(--ink-soft); margin-top: 10px; }
.login-field { display: flex; align-items: center; border: 1px solid var(--line); border-radius: var(--radius); padding: 2px 10px; }
.login-field input { border: none; outline: none; padding: 9px 4px; font: inherit; width: 100%; background: none; }
.login-remember { display: flex; align-items: center; gap: 8px; font-size: 0.84rem; font-weight: 400; color: var(--ink); margin-top: 14px; }
.login-error { color: var(--danger); font-size: 0.84rem; margin: 10px 0 0; }
.login-submit { margin-top: 20px; justify-content: center; width: 100%; }

/* Admin shell */
.app-shell { max-width: 1040px; margin: 0 auto; padding: 24px 20px 60px; }
.app-topbar { background: var(--ink); color: #fff; padding: 14px 20px; display: flex; align-items: center; justify-content: space-between; }
.app-topbar a { color: #fff; text-decoration: none; margin-right: 18px; font-size: 0.86rem; }
.app-topbar a.is-active { font-weight: 700; }
.app-topbar-brand { font-weight: 700; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; margin-bottom: 20px; }
table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }
th { color: var(--ink-soft); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.02em; }
.form-row { display: flex; flex-direction: column; gap: 4px; margin-bottom: 14px; }
.form-row label { font-size: 0.8rem; font-weight: 600; color: var(--ink-soft); }
.form-row input, .form-row select, .form-row textarea { padding: 9px 10px; border: 1px solid var(--line); border-radius: var(--radius); font: inherit; }
.form-actions { display: flex; gap: 8px; margin-top: 18px; }
.pill { display: inline-block; padding: 2px 9px; border-radius: 999px; background: var(--surface-sunken); font-size: 0.74rem; font-weight: 600; color: var(--ink-soft); }
.flash { padding: 10px 14px; border-radius: var(--radius); margin-bottom: 16px; font-size: 0.86rem; }
.flash-error { background: #FBEAE8; color: var(--danger); }
.flash-success { background: #E8F5EC; color: var(--primary-dark); }