/* ==========================================================================
   STERRA - CORE LAYOUT & WORKSPACE ARCHITECTURE (2D MATTE & FLAT EDITION)
   Clean Modern Developer Portal Style
   Author: Collin Lerche (zfzfg) | Projektgruppe STERRA
   ========================================================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scrollbar-width: thin;
    scrollbar-color: var(--border-medium) transparent;
}

/* Custom 2D Matte Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-medium);
    border-radius: var(--border-radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-chrome);
}

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

html,
body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--bg-app);
    color: var(--text-main);
    font-family: var(--font-ui);
    font-size: 14px;
    font-weight: 500;
    line-height: 1.55;
    user-select: none;
}

/* Base App Wrapper */
.vscode-app {
    display: flex;
    flex-direction: column;
    width: 100vw;
    height: 100vh;
    background-color: var(--bg-app);
    position: relative;
    overflow: hidden;
}

/* --------------------------------------------------------------------------
   1. STERRA TOPBAR (MATTE FLAT APP HEADER)
   -------------------------------------------------------------------------- */
.sterra-topbar {
    height: var(--topbar-height);
    background-color: var(--bg-titlebar);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 18px;
    font-size: 13px;
    color: var(--text-muted);
    z-index: 100;
    flex-shrink: 0;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 14px;
}

.topbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

.topbar-brand:hover {
    opacity: 0.9;
}

.topbar-logo {
    height: 28px;
    width: auto;
}

.topbar-brand-text {
    display: flex;
    flex-direction: column;
}

.brand-title {
    font-family: var(--font-heading);
    font-size: 17px;
    font-weight: 800;
    letter-spacing: 0.5px;
    color: var(--silver-100);
    line-height: 1.1;
}

.brand-sub {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 1px;
    color: var(--silver-400);
    font-weight: 700;
}

.topbar-center {
    flex: 1;
    max-width: 480px;
    display: flex;
    justify-content: center;
    padding: 0 16px;
}

.topbar-search {
    width: 100%;
    height: 32px;
    background-color: var(--bg-input);
    border: 1px solid var(--border-medium);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 14px;
    cursor: pointer;
    font-size: 12.5px;
    font-weight: 500;
    color: var(--silver-300);
    transition: border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.topbar-search:hover {
    border-color: var(--border-highlight);
    background-color: var(--bg-card);
    color: var(--text-main);
    box-shadow: var(--shadow-sm);
}

.topbar-search-kbd {
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 700;
    background: var(--border-subtle);
    border: 1px solid var(--border-medium);
    padding: 1px 5px;
    border-radius: var(--border-radius-sm);
    color: var(--silver-300);
}

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

.topbar-btn {
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    color: var(--text-main);
    padding: 6px 14px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 12.5px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.topbar-btn:hover {
    background-color: var(--bg-card-hover);
    border-color: var(--border-chrome);
    color: var(--silver-100);
    box-shadow: var(--shadow-sm);
    transform: translate(-1px, -1px);
}

.topbar-btn:active {
    transform: translate(0, 0);
    box-shadow: none;
}

.topbar-btn.discord {
    background: var(--bg-input);
    border-color: var(--border-medium);
    color: var(--silver-200);
}

.topbar-btn.discord:hover {
    background: var(--border-subtle);
    border-color: var(--border-chrome);
    color: #ffffff;
}

.topbar-btn.icon-only {
    padding: 6px 8px;
}

/* --------------------------------------------------------------------------
   2. MAIN WORKSPACE CONTAINER
   -------------------------------------------------------------------------- */
.vscode-main {
    display: flex;
    flex: 1;
    overflow: hidden;
    position: relative;
}

/* --------------------------------------------------------------------------
   3. ACTIVITY BAR (MATTE 2D STRIP)
   -------------------------------------------------------------------------- */
.vscode-activitybar {
    width: var(--activitybar-width);
    background-color: var(--bg-activity);
    border-right: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    flex-shrink: 0;
    z-index: 90;
}

.activity-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
    align-items: center;
    width: 100%;
}

.activity-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    position: relative;
    transition: color var(--transition-fast), background var(--transition-fast);
}

.activity-icon svg {
    width: 20px;
    height: 20px;
    stroke-width: 1.8;
}

.activity-icon:hover {
    color: var(--text-main);
    background-color: var(--border-subtle);
}

.activity-icon.active {
    color: var(--silver-100);
    background-color: var(--border-subtle);
}

.activity-icon.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    bottom: 6px;
    width: 3px;
    background: var(--accent-primary);
    border-radius: 0 2px 2px 0;
}

.activity-badge {
    position: absolute;
    top: 3px;
    right: 3px;
    background: var(--silver-200);
    color: var(--text-inverse);
    font-size: 9.5px;
    font-weight: 800;
    min-width: 14px;
    height: 14px;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 3px;
    border: 1px solid var(--border-subtle);
}

/* --------------------------------------------------------------------------
   4. PRIMARY SIDEBAR (FLAT 2D EXPLORER)
   -------------------------------------------------------------------------- */
.vscode-sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    overflow: hidden;
    position: relative;
    z-index: 80;
}

.sidebar-header {
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 12px;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    color: var(--silver-300);
    border-bottom: 1px solid var(--border-subtle);
    flex-shrink: 0;
    background-color: var(--bg-sidebar);
}

.sidebar-title {
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    color: var(--silver-200);
    white-space: nowrap;
}

.sidebar-actions {
    display: flex;
    align-items: center;
    gap: 4px;
}

.sidebar-btn,
.sidebar-action-btn {
    background: transparent;
    border: 1px solid transparent;
    color: var(--silver-300);
    width: 24px;
    height: 24px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    outline: none;
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.sidebar-btn:hover,
.sidebar-action-btn:hover {
    background-color: var(--border-subtle);
    border-color: var(--border-medium);
    color: var(--text-main);
}

.sidebar-btn svg,
.sidebar-action-btn svg {
    width: 14px;
    height: 14px;
    stroke: currentColor;
    fill: none;
    display: block;
}

.sidebar-search-box {
    margin: 8px 10px 4px 10px;
    background: var(--bg-input);
    border: 1px solid var(--border-medium);
    border-radius: var(--border-radius-sm);
    padding: 6px 9px;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.sidebar-search-box:focus-within {
    border-color: var(--border-highlight);
    box-shadow: var(--shadow-sm);
}

.sidebar-search-box input {
    width: 100%;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-main);
    font-size: 12.5px;
    font-weight: 500;
    font-family: var(--font-ui);
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 6px 8px 20px 8px;
}

/* Tree Groups & Sections */
.tree-root-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
    margin-bottom: 12px;
}

.tree-section {
    margin-bottom: 10px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--border-radius-sm);
    background: var(--bg-app);
    overflow: hidden;
}

.tree-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 10px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 700;
    color: var(--silver-200);
    background: var(--bg-tabs);
    user-select: none;
    border-bottom: 1px solid var(--border-subtle);
    transition: background var(--transition-fast), color var(--transition-fast);
}

.tree-header:hover {
    background: var(--border-subtle);
    color: var(--text-main);
}

.tree-header-left {
    display: flex;
    align-items: center;
    gap: 6px;
}

.tree-arrow {
    width: 12px;
    height: 12px;
    transition: transform var(--transition-fast);
}

.tree-section.collapsed .tree-arrow {
    transform: rotate(-90deg);
}

.tree-section.collapsed .tree-items-list {
    display: none;
}

.tree-folder-count {
    font-size: 10px;
    background: var(--border-subtle);
    border: 1px solid var(--border-medium);
    color: var(--silver-300);
    padding: 0 5px;
    border-radius: var(--border-radius-sm);
    font-weight: 800;
}

.tree-items-list {
    padding: 5px;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

/* Rich File Card in Sidebar (Flat 2D) */
.tree-rich-card {
    padding: 8px 10px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 3px;
    transition: all var(--transition-fast);
}

.tree-rich-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-chrome);
    transform: translate(-1px, -1px);
    box-shadow: var(--shadow-sm);
}

.tree-rich-card.active {
    background: var(--bg-card-hover);
    border-color: var(--border-highlight);
    box-shadow: var(--shadow-sm);
}

.tree-rich-card.active .tree-name {
    color: var(--silver-100);
    font-weight: 800;
}

.tree-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
}

.tree-card-title-wrap {
    display: flex;
    align-items: center;
    gap: 7px;
    min-width: 0;
}

.tree-icon {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.tree-name {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 700;
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tree-card-desc {
    font-size: 11.5px;
    font-weight: 500;
    color: var(--silver-400);
    line-height: 1.4;
    padding-left: 21px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Status Tags (Crisp Flat 2D Badges) */
.tree-tag {
    font-size: 9px;
    font-weight: 800;
    padding: 1px 5px;
    border-radius: var(--border-radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    flex-shrink: 0;
}

.tree-tag.live {
    background: rgba(52, 211, 153, 0.15);
    color: #34d399;
    border: 1px solid rgba(52, 211, 153, 0.4);
}

.tree-tag.in-dev {
    background: rgba(250, 204, 21, 0.15);
    color: #facc15;
    border: 1px solid rgba(250, 204, 21, 0.4);
}

.tree-tag.paused {
    background: rgba(251, 146, 60, 0.15);
    color: #fb923c;
    border: 1px solid rgba(251, 146, 60, 0.4);
}

.tree-tag.hub {
    background: var(--border-subtle);
    color: var(--silver-200);
    border: 1px solid var(--border-medium);
}

/* --------------------------------------------------------------------------
   5. MAIN EDITOR CONTAINER (TABS + VIEWPORT)
   -------------------------------------------------------------------------- */
.vscode-editor-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background-color: var(--bg-editor);
    position: relative;
}

/* Tabs Bar */
.editor-tabs-bar {
    height: var(--tab-height);
    background-color: var(--bg-tabs);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    overflow-x: auto;
    overflow-y: hidden;
}

.tabs-scroll-wrapper {
    display: flex;
    height: 100%;
    align-items: center;
}

.editor-tab {
    height: 100%;
    padding: 0 16px;
    background-color: var(--bg-tab-inactive);
    border-right: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--silver-300);
    cursor: pointer;
    position: relative;
    white-space: nowrap;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.editor-tab:hover {
    background-color: var(--border-subtle);
    color: var(--text-main);
}

.editor-tab.active {
    background-color: var(--bg-tab-active);
    color: var(--text-main);
    font-weight: 700;
}

.editor-tab.active::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-primary);
}

.tab-icon {
    display: flex;
    align-items: center;
}

.tab-title {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 600;
}

.tab-close {
    font-size: 14px;
    color: var(--text-muted);
    padding: 2px 4px;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.6;
    transition: all var(--transition-fast);
}

.tab-close:hover {
    opacity: 1;
    background-color: var(--border-subtle);
    color: var(--text-main);
}

/* Breadcrumbs */
.editor-breadcrumbs {
    height: 28px;
    background-color: var(--bg-editor);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0 20px;
    font-size: 12px;
    font-weight: 600;
    color: var(--silver-400);
    flex-shrink: 0;
}

.breadcrumb-item {
    cursor: pointer;
    transition: color var(--transition-fast);
}

.breadcrumb-item:hover {
    color: var(--text-main);
}

.breadcrumb-item.current {
    color: var(--silver-200);
    font-weight: 700;
    cursor: default;
}

.breadcrumb-sep {
    color: var(--text-dim);
    font-size: 10px;
}

/* Editor Viewport */
.editor-viewport {
    flex: 1;
    overflow-y: auto;
    position: relative;
    background-color: var(--bg-editor);
}

/* --------------------------------------------------------------------------
   6. STATUS BAR (FLAT 2D)
   -------------------------------------------------------------------------- */
.vscode-statusbar {
    height: var(--statusbar-height);
    background-color: var(--bg-statusbar);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 14px;
    font-size: 11.5px;
    font-weight: 600;
    color: var(--silver-300);
    flex-shrink: 0;
    z-index: 100;
}

.statusbar-left,
.statusbar-right {
    display: flex;
    align-items: center;
    gap: 14px;
}

.statusbar-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 2px 6px;
    border-radius: var(--border-radius-sm);
    transition: background var(--transition-fast), color var(--transition-fast);
}

.statusbar-item:hover {
    background-color: var(--border-subtle);
    color: var(--text-main);
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: var(--border-radius-sm);
    background-color: #34d399;
}

/* --------------------------------------------------------------------------
   7. COMMAND PALETTE & MODALS (HARD 2D SHADOWS)
   -------------------------------------------------------------------------- */
.command-palette-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: 60px;
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
}

.command-palette-overlay.visible {
    opacity: 1;
    pointer-events: auto;
}

.command-palette {
    width: 100%;
    max-width: 620px;
    background-color: var(--bg-modal);
    border: 1px solid var(--border-chrome);
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transform: translateY(-8px);
    transition: transform var(--transition-fast);
}

.command-palette-overlay.visible .command-palette {
    transform: translateY(0);
}

.palette-input-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-medium);
    background: var(--bg-input);
}

.palette-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-main);
    font-size: 14px;
    font-weight: 500;
    font-family: var(--font-ui);
}

.palette-results {
    max-height: 380px;
    overflow-y: auto;
    padding: 4px 0;
}

.palette-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 9px 16px;
    cursor: pointer;
    font-size: 13px;
    color: var(--silver-300);
    border-left: 2px solid transparent;
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.palette-item:hover,
.palette-item.selected {
    background-color: var(--border-subtle);
    border-left-color: var(--border-highlight);
    color: var(--text-main);
}

.palette-item-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.palette-item-shortcut {
    font-size: 10.5px;
    font-weight: 700;
    color: var(--silver-400);
    background: var(--border-subtle);
    border: 1px solid var(--border-medium);
    padding: 1px 5px;
    border-radius: var(--border-radius-sm);
}

/* Toast Notifications (Hard 2D Shadow) */
.vscode-notification-container {
    position: fixed;
    bottom: 36px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 9998;
}

.vscode-toast {
    background: var(--bg-modal);
    border: 1px solid var(--border-chrome);
    border-radius: var(--border-radius-sm);
    padding: 11px 16px;
    color: var(--text-main);
    font-size: 13px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: var(--shadow-lg);
    animation: toastSlideIn 0.25s ease-out;
}

@keyframes toastSlideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ==========================================================================
   OLED PURE BLACK SHELL REFINEMENTS
   100% pitch-black surfaces for Topbar, Activity Bar, Sidebar, Tabs & Modals
   ========================================================================== */
[data-theme="oled-black"] .sterra-topbar,
[data-theme="oled-black"] .vscode-activitybar,
[data-theme="oled-black"] .vscode-sidebar,
[data-theme="oled-black"] .sidebar-header,
[data-theme="oled-black"] .sidebar-search-box,
[data-theme="oled-black"] .sterra-tabs-bar,
[data-theme="oled-black"] .sterra-tab,
[data-theme="oled-black"] .sterra-breadcrumbs,
[data-theme="oled-black"] .sterra-statusbar,
[data-theme="oled-black"] .tree-rich-card,
[data-theme="oled-black"] .command-palette,
[data-theme="oled-black"] .palette-input-wrap,
[data-theme="oled-black"] .vscode-toast {
    background-color: #000000 !important;
}

[data-theme="oled-black"] .sterra-tab.active {
    background-color: #000000 !important;
    border-top: 2px solid #ffffff;
}

[data-theme="oled-black"] .tree-rich-card:hover {
    background-color: #060606 !important;
    border-color: #383838;
}

[data-theme="oled-black"] .tree-rich-card.active {
    background-color: #080808 !important;
    border-color: #ffffff;
}

[data-theme="oled-black"] .topbar-search {
    background-color: #000000;
    border-color: #2a2a2a;
}

[data-theme="oled-black"] .topbar-search:hover {
    background-color: #080808;
    border-color: #ffffff;
}

[data-theme="oled-black"] .topbar-btn {
    background-color: #000000;
    border-color: #2a2a2a;
}

[data-theme="oled-black"] .topbar-btn:hover {
    background-color: #0c0c0c;
    border-color: #ffffff;
}