/* ===== Trang admin ===== */
.admin-body { background: var(--blue-50); min-height: 100vh; }
.muted { color: var(--ink-soft); }

/* Đăng nhập */
.login-screen { min-height: 100vh; display: grid; place-items: center; padding: 1.5rem;
  background: linear-gradient(180deg, var(--blue-100), var(--blue-50)); }
.login-card {
  background: #fff; border-radius: var(--radius); padding: 2.4rem; width: min(420px, 100%);
  box-shadow: var(--shadow); border: 1px solid var(--blue-100); text-align: center; display: grid; gap: .9rem;
}
.login-card h1 { font-size: 1.5rem; }
.login-card input {
  width: 100%; padding: .85rem 1rem; border-radius: 12px; border: 1.5px solid var(--blue-200);
  font-family: var(--font-body); font-size: 1rem; outline: none; transition: border .15s;
}
.login-card input:focus { border-color: var(--blue-400); }
.login-error { color: #dc2626; font-size: .9rem; min-height: 1.2em; }
.back-link { font-size: .9rem; }
.brand { display: inline-flex; align-items: baseline; gap: .4rem; justify-content: center; margin: 0 auto; }

/* Nav admin */
.admin-nav { background: #fff; border-bottom: 1px solid var(--blue-100); position: sticky; top: 0; z-index: 30; }
.admin-nav__inner { display: flex; align-items: center; justify-content: space-between; padding: .8rem 0; gap: 1rem; flex-wrap: wrap; }
.admin-nav__actions { display: flex; gap: .6rem; flex-wrap: wrap; }

.admin-main { padding: 2rem 0 4rem; }
.admin-head { margin-bottom: 1.6rem; }
.admin-head h1 { font-size: 1.8rem; }

/* Danh sách thành viên */
.admin-list { display: grid; gap: 1rem; }
.admin-card {
  background: #fff; border-radius: 18px; border: 1px solid var(--blue-100); box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.admin-card__head {
  display: flex; align-items: center; gap: 1rem; padding: 1rem 1.3rem; cursor: pointer;
  transition: background .15s;
}
.admin-card__head:hover { background: var(--blue-50); }
.admin-avatar {
  width: 56px; height: 56px; border-radius: 14px; object-fit: cover; flex-shrink: 0;
  display: grid; place-items: center; color: #fff; font-family: var(--font-head); font-weight: 800; font-size: 1.3rem;
  background: linear-gradient(135deg, var(--blue-300), var(--blue-500));
}
.admin-card__meta { flex: 1; min-width: 0; }
.admin-card__meta h3 { font-size: 1.1rem; }
.admin-card__meta span { color: var(--blue-600); font-weight: 600; font-size: .85rem; }
.admin-card__chev { color: var(--blue-400); font-size: 1.4rem; transition: transform .2s; }
.admin-card.open .admin-card__chev { transform: rotate(180deg); }

.admin-card__body { display: none; padding: 0 1.3rem 1.4rem; border-top: 1px solid var(--blue-100); }
.admin-card.open .admin-card__body { display: block; }

.field { display: grid; gap: .35rem; margin-top: 1rem; }
.field label { font-weight: 600; font-size: .88rem; color: var(--ink); }
.field input, .field textarea {
  width: 100%; padding: .7rem .9rem; border-radius: 12px; border: 1.5px solid var(--blue-200);
  font-family: var(--font-body); font-size: .96rem; outline: none; transition: border .15s; resize: vertical;
}
.field input:focus, .field textarea:focus { border-color: var(--blue-400); }
.field .hint { color: var(--ink-soft); font-size: .8rem; }

/* Bộ chọn icon */
.icon-picker { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: .5rem; }
.icon-chip {
  width: 42px; height: 42px; border-radius: 12px; border: 1.5px solid var(--blue-200);
  background: #fff; color: var(--ink-soft); font-size: 1.05rem; cursor: pointer;
  display: grid; place-items: center; transition: all .15s;
}
.icon-chip:hover { border-color: var(--blue-400); color: var(--blue-600); transform: translateY(-2px); }
.icon-chip.active { background: var(--blue-500); border-color: var(--blue-500); color: #fff; }

.upload-row { display: flex; align-items: center; gap: 1rem; margin-top: 1rem; flex-wrap: wrap; }
.upload-preview {
  width: 84px; height: 84px; border-radius: 14px; object-fit: cover; border: 1.5px solid var(--blue-200);
  display: grid; place-items: center; color: var(--blue-400); font-size: .8rem; text-align: center; background: var(--blue-50);
}
.file-btn { position: relative; overflow: hidden; }
.file-btn input[type=file] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }

.admin-card__actions { display: flex; gap: .7rem; margin-top: 1.4rem; flex-wrap: wrap; }
.btn--danger { background: #fee2e2; color: #dc2626; }
.btn--danger:hover { background: #fecaca; }
.btn--save { background: linear-gradient(120deg, #16a34a, #22c55e); color: #fff; box-shadow: var(--shadow-sm); }

/* Toast */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translate(-50%, 120%);
  background: var(--ink); color: #fff; padding: .8rem 1.4rem; border-radius: 999px;
  font-weight: 600; box-shadow: var(--shadow); transition: transform .3s ease; z-index: 100; font-size: .95rem;
}
.toast.show { transform: translate(-50%, 0); }
.toast.error { background: #dc2626; }