/* ============================================
   ADMIN PANEL STYLES
   ============================================ */

.admin-shell { min-height: 100vh; padding: var(--sp-lg); }

.admin-topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--sp-lg);
    padding-bottom: var(--sp-sm);
    border-bottom: 1px solid var(--border-dim);
}

.admin-topbar h1 { font-family: var(--font-display); font-size: 1.4rem; }
.back-link { color: var(--text-gray); font-size: 0.85rem; }
.back-link:hover { color: var(--red); }

.admin-columns {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--sp-md);
}

.admin-col {
    background: var(--bg-panel);
    border: 1px solid var(--border-dim);
    border-radius: 6px;
    padding: var(--sp-sm);
    min-height: 400px;
}

.admin-col-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--sp-sm);
}

.admin-col-header h2 { font-size: 0.95rem; font-family: var(--font-display); color: var(--text-gray); }

.btn-add {
    background: var(--red);
    color: white;
    border: none;
    padding: 5px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
}

.btn-add:disabled { background: var(--border-dim); color: var(--text-gray-dim); cursor: not-allowed; }
.btn-add:hover:not(:disabled) { background: var(--red-dark); }

.admin-list { display: flex; flex-direction: column; gap: 4px; }

.admin-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    background: var(--bg-black);
    border: 1px solid var(--border-dim);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s ease;
}

.admin-item[draggable="true"] { gap: 8px; }

.drag-handle {
    cursor: grab;
    color: var(--text-gray-dim);
    font-size: 1rem;
    flex-shrink: 0;
    user-select: none;
}

.drag-handle:active { cursor: grabbing; }

.admin-item.dragging { opacity: 0.4; }

.admin-item.drag-over {
    border-top: 2px solid var(--red);
}

.admin-item:hover { border-color: var(--red); }
.admin-item.active { border-color: var(--red); background: rgba(184,38,44,0.1); }

.admin-item-title { color: var(--text-white); flex: 1; }
.admin-item-edit { color: var(--text-gray-dim); font-size: 0.75rem; }
.admin-item-edit:hover { color: var(--red); }

/* ---- Modal ---- */
.admin-modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.admin-modal.hidden { display: none; }

.admin-modal-box {
    background: var(--bg-panel);
    border: 1px solid var(--border-dim);
    border-radius: 8px;
    padding: var(--sp-lg);
    width: 420px;
    max-width: 90vw;
    max-height: 85vh;
    overflow-y: auto;
}

.admin-modal-wide { width: 700px; }

.admin-modal-box h3 { font-family: var(--font-display); margin-bottom: var(--sp-sm); }

.admin-modal-box label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-gray);
    margin: var(--sp-sm) 0 4px;
}

.admin-modal-box input,
.admin-modal-box textarea,
.admin-modal-box select {
    width: 100%;
    background: var(--bg-black);
    border: 1px solid var(--border-dim);
    color: var(--text-white);
    padding: 8px 10px;
    border-radius: 4px;
    font-family: var(--font-body);
    font-size: 0.9rem;
}

.form-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-sm); }

/* ---- Khu quản lý Timeline (dưới 3 cột) ---- */
.admin-timeline-col { margin-top: var(--sp-md); min-height: 0; }
.tl-admin-date { color: var(--text-gray-dim); margin-left: 4px; }
.tl-admin-link { display: block; font-size: 11px; color: #2e7d32; margin-top: 2px; }
.tl-admin-unlinked { color: #b8860b; }

.modal-actions {
    display: flex;
    gap: var(--sp-xs);
    margin-top: var(--sp-md);
}

.btn-save { background: var(--red); color: white; border: none; padding: 8px 18px; border-radius: 4px; cursor: pointer; }
.btn-save:hover { background: var(--red-dark); }

.btn-cancel { background: transparent; color: var(--text-gray); border: 1px solid var(--border-dim); padding: 8px 18px; border-radius: 4px; cursor: pointer; }

.btn-delete { background: transparent; color: #e07a7a; border: 1px solid #5a2020; padding: 8px 18px; border-radius: 4px; cursor: pointer; margin-left: auto; }
.btn-delete:hover { background: #5a2020; color: white; }
.hidden { display: none !important; }

/* ---- Rich Text Editor ---- */
.rte-toolbar { display: flex; gap: 4px; flex-wrap: wrap; margin-bottom: 6px; }

.rte-toolbar button {
    background: var(--bg-black);
    border: 1px solid var(--border-dim);
    color: var(--text-white);
    padding: 5px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
}

.rte-toolbar button:hover { border-color: var(--red); }

.rte-editor {
    min-height: 260px;
    max-height: 400px;
    overflow-y: auto;
    background: var(--bg-black);
    border: 1px solid var(--border-dim);
    border-radius: 4px;
    padding: var(--sp-sm);
    color: var(--text-white);
    font-size: 0.9rem;
    line-height: 1.6;
}

.rte-editor img { max-width: 100%; margin: 8px 0; }
.rte-editor:focus { outline: none; border-color: var(--red); }

@media (max-width: 900px) {
    .admin-columns { grid-template-columns: 1fr; }
}


/* ===== LOGIN ===== */
[hidden] { display: none !important; }

.login-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--sp-md);
    background: var(--bg-panel);
}
.login-box {
    width: 100%;
    max-width: 380px;
    background: #fff;
    border: 1px solid #d6d6d6;
    border-top: 4px solid var(--red);
    padding: var(--sp-lg) var(--sp-md);
    display: flex;
    flex-direction: column;
    gap: var(--sp-xs);
}
.login-box h1 { font-size: 1.2rem; margin-bottom: var(--sp-sm); }
.login-box label { font-size: 0.8rem; color: var(--text-gray-dim); margin-top: var(--sp-xs); }
.login-box input {
    padding: 10px;
    border: 1px solid #d6d6d6;
    border-radius: 4px;
    font: inherit;
}
.login-box input:focus { outline: none; border-color: var(--red); }
.login-box .btn-save { margin-top: var(--sp-sm); padding: 10px; }
.login-box .btn-save:disabled { opacity: 0.6; cursor: wait; }
.login-box .back-link { margin-top: var(--sp-sm); text-align: center; }
.login-error { color: var(--red); font-size: 0.85rem; min-height: 1.2em; }

.admin-topbar-right { display: flex; align-items: center; gap: var(--sp-sm); }
.admin-topbar-right .btn-cancel { color: #000; padding: 6px 14px; }


/* ===== MODAL CHÈN ẢNH (nằm trên modal bài viết) ===== */
#imageInsertModal { z-index: 110; }

.admin-modal-box label.toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sp-sm);
    margin-top: var(--sp-md);
    cursor: pointer;
}
.toggle-switch { position: relative; width: 44px; height: 24px; flex-shrink: 0; }
.admin-modal-box .toggle-switch input {
    position: absolute; inset: 0; width: 100%; height: 100%;
    opacity: 0; margin: 0; padding: 0; cursor: pointer; z-index: 1;
}
.toggle-slider {
    position: absolute; inset: 0;
    background: #9a9a9a; border-radius: 24px;
    transition: background 0.2s ease;
}
.toggle-slider::before {
    content: ""; position: absolute; top: 3px; left: 3px;
    width: 18px; height: 18px; border-radius: 50%;
    background: #fff; transition: transform 0.2s ease;
}
.toggle-switch input:checked + .toggle-slider { background: var(--red); }
.toggle-switch input:checked + .toggle-slider::before { transform: translateX(20px); }