/* ============================================================
   БАЗОВЫЕ СТИЛИ
   ============================================================ */

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

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Tahoma, sans-serif;
    font-size: 14px;
    color: var(--text-primary);
    background: var(--bg-body);
    -webkit-font-smoothing: antialiased;
}

button {
    font-family: inherit;
    cursor: pointer;
}

/* ============================================================
   LAYOUT — HEADER / TOOLBAR / MAIN / FOOTER
   ============================================================ */

#app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 12px;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-primary);
    font-weight: 600;
    font-size: 15px;
}

.header-left i {
    font-size: 18px;
}

.header-center {
    flex: 1;
    display: flex;
    justify-content: center;
    padding: 0 16px;
}

#diagram-selector {
    min-width: 240px;
    max-width: 400px;
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 13px;
    outline: none;
    transition: border-color var(--transition-fast);
}

#diagram-selector:focus {
    border-color: var(--color-accent);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.user-info {
    font-size: 13px;
    color: var(--text-secondary);
    padding-right: 8px;
}

/* ============================================================
   КНОПКИ
   ============================================================ */

.icon-btn {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.icon-btn:hover {
    background: var(--bg-panel-secondary);
    color: var(--text-primary);
}

.icon-btn:active {
    transform: scale(0.95);
}

/* ============================================================
   TOOLBAR
   ============================================================ */

.toolbar {
    position: fixed;
    top: calc(var(--header-height) + 8px);
    left: 50%;
    transform: translateX(-50%);
    height: var(--toolbar-height);
    background: var(--bg-toolbar);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 0 8px;
    display: flex;
    align-items: center;
    gap: 2px;
    z-index: 90;
    box-shadow: var(--shadow-md);
}

.tool-btn {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.tool-btn:hover {
    background: var(--bg-panel-secondary);
    color: var(--color-primary);
}

.tool-btn:active {
    transform: scale(0.92);
}

.tool-separator {
    width: 1px;
    height: 20px;
    background: var(--border-light);
    margin: 0 4px;
}

.tool-btn {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.tool-btn:hover:not(:disabled) {
    background: var(--bg-panel-secondary);
    color: var(--color-primary);
}

.tool-btn:active:not(:disabled) {
    transform: scale(0.92);
}

.tool-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* ============================================================
   MAIN LAYOUT
   ============================================================ */

#app-main {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: var(--footer-height);
    display: flex;
}

/* ============================================================
   SIDEBAR
   ============================================================ */

.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.sidebar-header {
    padding: 12px;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sidebar-header h3 {
    margin: 0;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.diagram-list {
    flex: 1;
    overflow-y: auto;
    list-style: none;
    margin: 0;
    padding: 4px 0;
}

.diagram-list li {
    padding: 8px 12px;
    cursor: pointer;
    border-left: 3px solid transparent;
    transition: all var(--transition-fast);
    font-size: 13px;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.diagram-list li:hover {
    background: var(--bg-panel-secondary);
}

.diagram-list li.active {
    background: var(--bg-panel-secondary);
    border-left-color: var(--color-primary);
    color: var(--color-primary);
    font-weight: 500;
}

.sidebar-footer {
    padding: 8px 12px;
    border-top: 1px solid var(--border-light);
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
}

/* ============================================================
   MINDMAP CONTAINER
   ============================================================ */

#mindmap-container {
    flex: 1;
    overflow: auto;
    background: var(--bg-mindmap);
    position: relative;
}

#mindmap {
    position: relative;
    min-width: 100%;
    min-height: 100%;
    padding: 80px 80px 400px 80px;
    font-size: 14px;
    white-space: nowrap;
}

/* Сетка-фон (опционально, через CSS) */
#mindmap-container {
    background-image:
        radial-gradient(circle, var(--border-color) 1px, transparent 1px);
    background-size: 24px 24px;
}

/* ============================================================
   УЗЛЫ ДИАГРАММЫ
   ============================================================ */

#mindmap ul {
    display: inline-block;
    white-space: nowrap;
    vertical-align: middle;
    list-style: none;
    margin: 0;
    padding: 0 0 0 40px;
}

#mindmap li {
    display: block;
    position: relative;
    margin: 12px 0;
}

#mindmap .hide > ul {
    display: none;
}

.big_n_title {
    display: inline-flex;
    align-items: center;
    position: relative;
    padding: 6px 28px 6px 8px;
    margin: 8px 16px;
    border: 1px solid var(--border-node);
    border-radius: var(--radius-md);
    background: var(--bg-node);
    box-shadow: var(--shadow-sm);
    min-width: 120px;
    max-width: 320px;
    transition: all var(--transition-fast);
    vertical-align: middle;
}

.big_n_title:hover {
    background: var(--bg-node-hover);
    box-shadow: var(--shadow-md);
}

/* Корневой узел */
/* Корневой узел */
#node_1 > .big_n_title {
    border: 2px solid var(--border-node-root);
    border-radius: var(--radius-lg);
    background: var(--bg-node-root);
    padding: 8px 32px 8px 12px;
    font-weight: 600;
    font-size: 1.1em;
}

#node_1 > .big_n_title .collapse {
    display: none;
}

/* Заголовок узла */
.n_title {
    display: inline-block;
    outline: none;
    white-space: normal;
    word-break: break-word;
    line-height: 1.4;
    flex: 1;
    min-width: 40px;
    cursor: text;
}

.n_title:focus {
    background: rgba(74, 144, 226, 0.08);
    border-radius: var(--radius-sm);
    padding: 0 2px;
    margin: 0 -2px;
}

/* Иконка */
.type_icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    margin-right: 6px;
    color: var(--color-primary);
    font-size: 14px;
    flex-shrink: 0;
}

/* Чекбокс */
.node-checkbox {
    margin-right: 6px;
    cursor: pointer;
    accent-color: var(--color-primary);
}

/* Свёрнуть/развернуть */
.collapse {
    position: absolute;
    right: -6px;
    bottom: -6px;
    width: 14px;
    height: 14px;
    border: 1px solid var(--border-node);
    border-radius: 50%;
    background: var(--bg-panel);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    color: var(--text-secondary);
    z-index: 6;
    transition: all var(--transition-fast);
}

.collapse:hover {
    background: var(--color-primary);
    color: var(--text-on-primary);
    border-color: var(--color-primary);
}

.collapse::before {
    content: "−";
    line-height: 1;
}

.hide > .big_n_title .collapse::before {
    content: "+";
}

/* Контекстное меню (иконка-триггер) */
.contextmenu {
    position: absolute;
    right: 6px;
    bottom: 4px;
    width: 16px;
    height: 16px;
    opacity: 0;
    color: var(--text-muted);
    cursor: pointer;
    transition: opacity var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    border-radius: var(--radius-sm);
}

.big_n_title:hover .contextmenu {
    opacity: 1;
}

.contextmenu:hover {
    background: var(--bg-panel-secondary);
    color: var(--color-primary);
}

/* ============================================================
   DRAG-N-DROP
   ============================================================ */

.ui-draggable-dragging {
    opacity: 0.85;
    z-index: 9999 !important;
    box-shadow: var(--shadow-lg) !important;
}

.ui-can-hover {
    background: rgba(74, 144, 226, 0.15) !important;
    border-color: var(--color-accent) !important;
}

.ui-can-recieve {
    outline: 2px dashed var(--color-accent);
    outline-offset: 2px;
}

/* Режим cross-link (с Ctrl) */
.cross-link-mode .big_n_title {
    outline: 1px dashed var(--connector-cross);
}

/* ============================================================
   JSPLUMB — ЛИНИИ
   ============================================================ */

._jsPlumb_connector {
    z-index: 5;
}

._jsPlumb_endpoint,
._jsPlumb_connector {
    outline: none;
}

/* ============================================================
   FOOTER
   ============================================================ */

#app-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--footer-height);
    background: var(--bg-panel);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 12px;
    font-size: 12px;
    color: var(--text-muted);
    z-index: 100;
}

.autosave-status {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.autosave-status.dirty {
    color: var(--color-warning);
}

.autosave-status.saved {
    color: var(--color-success);
}

/* ============================================================
   ДИАЛОГИ (jQuery UI override)
   ============================================================ */

.ui-dialog {
    background: var(--bg-dialog) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: var(--radius-xl) !important;
    box-shadow: var(--shadow-lg) !important;
    padding: 0 !important;
}

.ui-dialog .ui-dialog-titlebar {
    background: transparent !important;
    border: none !important;
    border-bottom: 1px solid var(--border-light) !important;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0 !important;
    padding: 12px 16px !important;
    color: var(--text-primary) !important;
}

.ui-dialog .ui-dialog-title {
    color: var(--text-primary) !important;
    font-weight: 600 !important;
}

.ui-dialog .ui-dialog-content {
    background: transparent !important;
    color: var(--text-primary) !important;
    padding: 16px !important;
}

.ui-dialog .ui-dialog-buttonpane {
    background: transparent !important;
    border-top: 1px solid var(--border-light) !important;
    padding: 12px 16px !important;
}

.ui-dialog .ui-button {
    background: var(--bg-panel-secondary) !important;
    color: var(--text-primary) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: var(--radius-md) !important;
    padding: 6px 14px !important;
    transition: all var(--transition-fast) !important;
}

.ui-dialog .ui-button:hover {
    background: var(--color-primary) !important;
    color: var(--text-on-primary) !important;
    border-color: var(--color-primary) !important;
}

.ui-dialog .ui-button.danger {
    background: var(--color-danger) !important;
    color: var(--text-on-primary) !important;
    border-color: var(--color-danger) !important;
}

.ui-widget-overlay {
    background: rgba(0, 0, 0, 0.4) !important;
    backdrop-filter: blur(2px);
}

/* ============================================================
   ФОРМЫ В ДИАЛОГАХ
   ============================================================ */

.auth-form,
.auth-form label,
.auth-form input,
form label,
form input,
form select,
form textarea {
    display: block;
    width: 100%;
    margin-bottom: 10px;
}

.auth-form label,
form label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.auth-form input,
form input,
form select,
form textarea {
    padding: 8px 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 13px;
    outline: none;
    transition: border-color var(--transition-fast);
}

.auth-form input:focus,
form input:focus,
form select:focus,
form textarea:focus {
    border-color: var(--color-accent);
}

form textarea {
    min-height: 180px;
    resize: vertical;
    font-family: "Consolas", "Monaco", monospace;
    font-size: 12px;
}

form button[type="submit"] {
    background: var(--color-primary);
    color: var(--text-on-primary);
    border: none;
    border-radius: var(--radius-md);
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: background var(--transition-fast);
}

form button[type="submit"]:hover {
    background: var(--color-primary-hover);
}

.warning {
    color: var(--color-danger);
    font-size: 12px;
    margin: 8px 0;
}

/* ============================================================
   ВКЛАДКИ В ДИАЛОГЕ АВТОРИЗАЦИИ
   ============================================================ */

.auth-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-light);
    margin-bottom: 16px;
}

.auth-tab {
    flex: 1;
    padding: 8px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
}

.auth-tab:hover {
    color: var(--text-primary);
}

.auth-tab.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

/* ============================================================
   СКРОЛЛБАРЫ
   ============================================================ */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ============================================================
   УТИЛИТЫ
   ============================================================ */

.hidden { display: none !important; }
.text-muted { color: var(--text-muted); }
.text-danger { color: var(--color-danger); }


/* Контекстное меню */
.context-menu {
    position: absolute;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    z-index: 10000;
    padding: 4px 0;
    display: none;
}
.menu-item {
    padding: 6px 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    position: relative;
}
.menu-item:hover { background: var(--bg-panel-secondary); }
.menu-item.danger { color: var(--color-danger); }
.menu-separator { height: 1px; background: var(--border-light); margin: 4px 0; }
.shortcut { margin-left: auto; color: var(--text-muted); font-size: 11px; }
.has-submenu > .submenu {
    display: none;
    position: absolute;
    left: 100%;
    top: 0;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    min-width: 180px;
    box-shadow: var(--shadow-md);
}
.has-submenu.open > .submenu { display: block; }
.submenu-item { padding: 6px 12px; cursor: pointer; }
.submenu-item:hover { background: var(--bg-panel-secondary); }
.submenu-item.active { color: var(--color-primary); font-weight: 500; }