* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'JetBrains Mono', monospace;
    background-color: var(--base);
    color: var(--text);
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
    padding: 0.5rem;
    gap: 0.5rem;
}

.header {
    border-radius: 0.75rem;
    background-color: var(--mantle);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem;
    gap: 0.5rem;
}

.tabs-container {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex: 1;
    overflow-x: auto;
}

.tab {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.4rem 0.75rem;
    border-radius: 0.5rem;
    cursor: pointer;
    user-select: none;
    background-color: transparent;
    transition: background-color 0.2s ease;
    position: relative;
}

.tab:hover {
    background-color: var(--surface0);
}

.tab.active {
    background-color: var(--surface0);
    font-weight: 700;
    color: var(--mauve);
}

.tab-name {
    font-size: 0.75rem;
}

.tab-close {
    font-size: 1rem;
    line-height: 1;
    opacity: 0.6;
    transition: opacity 0.2s ease;
    color: var(--red);
}

.tab-close:hover {
    opacity: 1;
}

.new-tab-btn {
    padding: 0.4rem 0.75rem;
    background: none;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    color: var(--green);
    transition: background-color 0.2s ease;
}

.new-tab-btn:hover {
    background-color: var(--surface0);
}

.hide-panel-btn {
    padding: 0.4rem 0.75rem;
    background-color: var(--surface0);
    color: var(--text);
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    transition: background-color 0.2s ease;
}

.hide-panel-btn:hover {
    background-color: var(--surface1);
}

.run-btn {
    padding: 0.4rem 0.75rem;
    background-color: var(--green);
    color: var(--base);
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    font-weight: 700;
    transition: background-color 0.2s ease;
}

.run-btn:hover {
    background-color: var(--teal);
}

/* Context Menu */
.context-menu {
    position: fixed;
    background-color: var(--surface0);
    border: 1px solid var(--surface1);
    border-radius: 0.75rem;
    padding: 0.35rem;
    min-width: 160px;
    z-index: 1000;
    display: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.context-menu.show {
    display: block;
}

.context-item {
    padding: 0.4rem 0.75rem;
    cursor: pointer;
    font-size: 0.75rem;
    color: var(--text);
    transition: background-color;
    border-radius: 0.5rem;
}

.context-item:hover {
    background-color: var(--surface1);
}

.context-item.danger {
    color: var(--red);
}

.context-divider {
    height: 1px;
    background-color: var(--surface1);
    margin: 0.25rem 0;
}

.container {
    display: flex;
    flex: 1;
    overflow: hidden;
    gap: 0.5rem;
}

.panel {
    height: 100%;
    overflow: auto;
    border-radius: 0.75rem;
}

.panel.left {
    background-color: var(--mantle);
    flex-shrink: 0;
    width: 17%;
    min-width: 16%;
    padding: 0;
}

.panel.middle {
    background-color: var(--mantle);
    padding: 0;
    flex: 1;
    min-width: 0;
}

.panel.right {
    background-color: var(--mantle);
    flex-shrink: 0;
    width: 25%;
    padding: 1.5rem;
}

.panel.right.hidden {
    width: 0 !important;
    padding: 0;
    opacity: 0;
    overflow: hidden;
}

.resizer {
    width: 5px;
    cursor: col-resize;
    background-color: var(--surface0);
    flex-shrink: 0;
    transition: background-color 0.2s ease;
}

.resizer:hover {
    background-color: var(--yellow);
}

.editor-container {
    display: flex;
    height: 100%;
    width: 100%;
    overflow: hidden;
    border-radius: 0.75rem;
}

.line-numbers {
    background-color: var(--base);
    color: var(--overlay0);
    padding: 1.5rem 0.5rem;
    text-align: right;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    line-height: 1.5;
    user-select: none;
    min-width: 2.5rem;
    overflow: hidden;
    white-space: pre;
}

.cursor {
    position: absolute;
    width: 2px;
    height: 1.3125rem;
    background-color: var(--text);
    pointer-events: none;
    z-index: 1;
    transition: all 0.15s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.cursor.blink {
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.subtitle {
    font-size: 0.75rem;
    color: var(--subtext0);
}

.info-text {
    font-size: 0.75rem;
    color: var(--subtext0);
    margin-top: 0.5rem;
}

.editor-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: 0 0.75rem 0.75rem 0;
    overflow: hidden;
}

.header-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    padding: 1.5rem;
    padding-bottom: 0;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    line-height: 1.5;
    white-space: pre;
    pointer-events: none;
    z-index: 2;
    color: var(--text);
    margin: 0;
    background: transparent;
    user-select: none;
    overflow: hidden;
}

.header-overlay .lock-icon {
    color: var(--overlay0);
    opacity: 0.6;
    font-size: 0.7rem;
    margin-right: 0.25rem;
}

.header-overlay .keyword {
    color: var(--mauve);
}

.header-overlay .keyword.locked {
    color: var(--overlay1);
    opacity: 0.7;
}

.header-overlay .comment {
    color: var(--overlay0);
    font-style: italic;
}

.header-overlay .classname {
    color: var(--yellow);
}

.highlight-layer {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 1.5rem;
    padding-top: calc(1.5rem + 4 * 1.5 * 0.75rem);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    line-height: 1.5;
    white-space: pre;
    tab-size: 4;
    -moz-tab-size: 4;
    -o-tab-size: 4;
    pointer-events: none;
    z-index: 0;
    color: var(--text);
    overflow: hidden;
    font-variant-ligatures: none;
    font-feature-settings: normal;
}

/* Allow selection to show through on highlight layer */
.highlight-layer::selection {
    background-color: transparent;
}

.highlight-layer::-moz-selection {
    background-color: transparent;
}

@keyframes smooth-blink {
    0%, 49% { opacity: 1; }
    50%, 100% { opacity: 0; }
}

.editor {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding: 1.5rem;
    padding-top: calc(1.5rem + 4 * 1.5 * 0.75rem);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    line-height: 1.5;
    color: transparent;
    caret-color: var(--yellow);
    background: transparent;
    border: none;
    resize: none;
    z-index: 1;
    overflow: auto;
    outline: none;
    white-space: pre;
    tab-size: 4;
    -moz-tab-size: 4;
    -o-tab-size: 4;
    font-variant-ligatures: none;
    font-feature-settings: normal;
    scroll-behavior: smooth;
}

.editor:focus {
    outline: none;
}

.editor::selection {
    background-color: rgba(137, 180, 250, 0.3);
    color: transparent;
}

.editor::-moz-selection {
    background-color: rgba(137, 180, 250, 0.3);
    color: transparent;
}

.ai-chat-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    color: var(--text);
}

.chat-header {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid var(--surface0);
    background-color: var(--mantle);
    border-radius: 0.75rem 0.75rem 0 0;
}

.chat-header-text {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--subtext0);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem 0.75rem;
    background-color: var(--mantle);
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.chat-empty-state {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    font-size: 0.75rem;
    color: var(--subtext0);
    font-weight: 400;
}

.chat-input-wrapper {
    position: relative;
    padding: 0.75rem;
    background-color: var(--mantle);
    border-radius: 0 0 0.75rem 0.75rem;
}

.chat-input {
    width: 100%;
    min-height: 1.75rem;
    max-height: 10rem;
    padding: 0.4rem 2rem 0.4rem 0.4rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    background-color: var(--surface0);
    color: var(--text);
    border: 1px solid var(--surface1);
    border-radius: 0.5rem;
    resize: none;
    outline: none;
    overflow-y: auto;
    line-height: 1.4;
}

.chat-input:focus {
    border-color: var(--surface1);
}

.chat-submit-btn {
    position: absolute;
    right: 1rem;
    bottom: calc(0.75rem + 0.2rem);
    width: 1.35rem;
    height: 1.35rem;
    padding: 0.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: transparent;
    color: var(--subtext0);
    border: none;
    border-radius: 0.35rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.chat-submit-btn:hover {
    color: var(--text);
    background-color: var(--surface0);
}

.chat-submit-btn:disabled {
    color: var(--surface1);
    cursor: not-allowed;
}

/* Syntax highlighting classes */
.highlight-layer .keyword {
    color: var(--mauve);
}

.highlight-layer .function {
    color: var(--yellow);
}

.highlight-layer .classname {
    color: var(--blue);
}

.highlight-layer .string {
    color: var(--green);
}

.highlight-layer .comment {
    color: var(--overlay0);
    font-style: italic;
}

.highlight-layer .decorator {
    color: var(--yellow);
}

.highlight-layer .number {
    color: var(--peach);
}

/* Import error highlighting */
.highlight-layer .importError {
    color: var(--red) !important;
    background-color: rgba(243, 139, 168, 0.15);
    padding: 2px 4px;
    border-radius: 0.35rem;
    cursor: not-allowed;
    position: relative;
    font-weight: 700;
}

/* Autocomplete styling */
#autocomplete {
    position: fixed;
    background-color: var(--surface0);
    border: 1px solid var(--surface1);
    border-radius: 0.75rem;
    max-height: 200px;
    overflow-y: auto;
    z-index: 1000;
    display: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    min-width: 200px;
    padding: 0.35rem;
}

.autocomplete-item {
    padding: 0.4rem 0.75rem;
    cursor: pointer;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--text);
    transition: background-color 0.1s ease;
    border-radius: 0.5rem;
}

.autocomplete-item:hover {
    background-color: var(--surface1);
}

.autocomplete-item.selected {
    background-color: var(--surface1);
    color: var(--mauve);
}

.autocomplete-separator {
    padding: 0.35rem 0.75rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--blue);
    background-color: var(--mantle);
    border-radius: 0.5rem;
    margin: 0.25rem 0;
    user-select: none;
    pointer-events: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Scrollbar styling for autocomplete */
#autocomplete::-webkit-scrollbar {
    width: 6px;
}

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

#autocomplete::-webkit-scrollbar-thumb {
    background: var(--surface2);
    border-radius: 3px;
}

#autocomplete::-webkit-scrollbar-thumb:hover {
    background: var(--overlay0);
}