/* Cassilda Web App - Styles matching VS Code extension theme */

:root {
    /* Colors from VS Code dark theme + Cassilda extension */
    --bg-primary: #1e1e1e;
    --bg-secondary: #303136/*#252526*/;
    --bg-tertiary: #2d2d2d;
    --bg-hover: #3c3c3c;
    --bg-active: #094771;
    
    /* Text colors */
    --text-primary: #f0f8ff;      /* From settings: source.cassilda */
    --text-secondary: #9d9d9d;
    --text-muted: #6d6d6d;
    
    /* Accent colors from tmLanguage */
    --color-label: #4ec9b0;       /* entity.name.section.cassilda - teal */
    --color-keyword: #c586c0;     /* keyword.control - pink */
    --color-math: #dcdcaa;        /* markup.math.display.cassilda - yellow */
    --color-comment: #6a9955;     /* comment - green */
    --color-string: #ce9178;      /* string - orange */
    --color-reference: #9cdcfe;   /* entity.name.tag.reference - light blue */
    --color-function: #569cd6;    /* support.function - blue */
    --color-number: #b5cea8;      /* constant.numeric - light green */
    --color-operator: #d4d4d4;    /* operator */
    
    /* Output styling from settings.json */
    --output-bg: rgba(40, 50, 70, 0.4);
    --output-border: rgba(80, 100, 140, 0.6);
    --reference-bg: rgba(60, 80, 60, 0.3);
    
    /* UI colors */
    --border-color: #3c3c3c;
    --accent-color: #0e639c;
    --accent-hover: #1177bb;
    --success-color: #4ec9b0;
    --error-color: #f14c4c;
    --warning-color: #cca700;
    
    /* Spacing */
    --header-height: 40px;
    --toolbar-height: 36px;
    --statusbar-height: 22px;
    
    /* Typography - matching settings.json */
    --font-family: 'JuliaMono', 'Menlo', 'Monaco', 'Courier New', monospace;
    --font-size: 13px;
    --line-height: 18px;
    --font-weight: 300;
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size);
    font-weight: var(--font-weight);
    line-height: var(--line-height);
    background: var(--bg-primary);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* Enable OpenType features for proper combining mark rendering */
    font-feature-settings: "ccmp" 1, "mark" 1, "mkmk" 1;
    -webkit-font-feature-settings: "ccmp" 1, "mark" 1, "mkmk" 1;
    text-rendering: optimizeLegibility;
}

/* App Container */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Header */
.app-header {
    height: var(--header-height);
    background: linear-gradient(135deg, rgb(7,20,12), #000000) /* #000000 */;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px 0 0;  /* No left padding - gif goes to edge */
    flex-shrink: 0;
    user-select: none;
    -webkit-app-region: drag;
}

.header-left, .header-center, .header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-left {
    flex: 1;
}

.header-center {
    flex: 1;
    justify-content: center;
}

.header-right {
    flex: 1;
    justify-content: flex-end;
}

/* Logo banner with animated gif */
.logo-banner {
    position: relative;
    display: flex;
    align-items: center;
    height: var(--header-height);
}

.logo-gif {
    height: 100%;
    width: auto;
    display: block;
}

/* Logo banner with animated gif */
.logo-banner {
    position: relative;
    display: flex;
    align-items: center;
    height: var(--header-height);
}

.logo-gif {
    height: 100%;
    width: auto;
    display: block;
}

.logo {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    font-weight: 600;
    margin: 0;
    text-shadow: 0 0 10px rgba(0, 0, 0, 0.8), 0 0 20px rgba(0, 0, 0, 0.6);
}

.logo-icon {
    font-size: 18px;
    color: var(--color-math);
}

.logo-text {
    background: linear-gradient(135deg, var(--color-label), var(--color-math));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-subtitle {
    font-size: 12px;
    color: #fafafa;
    font-weight: 400;
    white-space: nowrap;
    margin-left: 12px;
}

.file-info {
    display: flex;
    align-items: center;
    gap: 8px;
}

.file-name {
    font-size: 13px;
    color: var(--text-primary);
}

.file-status {
    font-size: 11px;
    color: var(--text-secondary);
}

.file-status.modified::before {
    content: '●';
    color: var(--warning-color);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
    transition: all 0.3s ease;
}

.status-dot.ready {
    background: var(--success-color);
    box-shadow: 0 0 8px var(--success-color);
}

.status-dot.loading {
    background: var(--warning-color);
    animation: pulse 1s ease-in-out infinite;
}

.status-dot.error {
    background: var(--error-color);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Toolbar */
.toolbar {
    height: var(--toolbar-height);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 8px;
    gap: 4px;
    flex-shrink: 0;
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: 2px;
}

.toolbar-separator {
    width: 1px;
    height: 20px;
    background: var(--border-color);
    margin: 0 6px;
}

.toolbar-spacer {
    flex: 1;
}

.toolbar-label {
    font-size: 11px;
    color: var(--text-secondary);
    margin-right: 4px;
}

.toolbar-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    border: none;
    border-radius: 3px;
    background: transparent;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 12px;
    cursor: pointer;
    transition: background 0.15s ease;
    -webkit-app-region: no-drag;
    font-weight: 1000;
}

.toolbar-btn:hover {
    background: var(--bg-hover);
}

.toolbar-btn:active {
    background: var(--bg-active);
}

.toolbar-btn.primary {
    background: var(--accent-color);
}

.toolbar-btn.primary:hover {
    background: var(--accent-hover);
}

/* Prominent Examples button */
.toolbar-btn.examples-btn {
    background: var(--accent-color);
    color: white;
    padding: 4px 12px;
    gap: 6px;
}

.toolbar-btn.examples-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(78, 201, 176, 0.3);
}

.toolbar-btn.examples-btn .btn-icon {
    font-size: 16px;
}

.toolbar-btn.examples-btn .btn-badge {
    font-size: 9px;
    opacity: 0.85;
    font-weight: 400;
}

.btn-icon {
    font-size: 14px;
}

.btn-label {
    font-size: 11px;
}

.toolbar-select {
    padding: 4px 8px;
    border: 1px solid var(--border-color);
    border-radius: 3px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 11px;
    cursor: pointer;
    -webkit-app-region: no-drag;
}

.toolbar-select:focus {
    outline: 1px solid var(--accent-color);
}

/* Editor Container */
.editor-container {
    flex: 1;
    overflow: hidden;
    position: relative;
    min-width: 0;
}

#editor {
    width: 100%;
    height: 100%;
}

/* Main Content (Editor + Side Panel) */
.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
    position: relative;
}

/* Side Panel */
.side-panel {
    width: 320px;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transform: translateX(100%);
    transition: transform 0.25s ease;
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    z-index: 100;
}

.side-panel.open {
    transform: translateX(0);
}

.side-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.side-panel-header h2 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.side-panel-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 20px;
    cursor: pointer;
    padding: 0;
    line-height: 1;
    transition: color 0.15s ease;
}

.side-panel-close:hover {
    color: var(--text-primary);
}

.side-panel-search {
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.side-panel-search input {
    width: 100%;
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 12px;
}

.side-panel-search input:focus {
    outline: none;
    border-color: var(--accent-color);
}

.side-panel-search input::placeholder {
    color: var(--text-muted);
}

.side-panel-content {
    flex: 1;
    overflow-y: auto;
    padding: 8px 0;
}

/* Side Panel Toggle Button */
.side-panel-toggle {
    position: absolute;
    right: 16px;
    bottom: 16px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent-color);
    border: none;
    color: white;
    font-size: 20px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transition: all 0.2s ease;
    z-index: 99;
    display: flex;
    align-items: center;
    justify-content: center;
}

.side-panel-toggle:hover {
    background: var(--accent-hover);
    transform: scale(1.05);
}

.side-panel-toggle.hidden {
    display: none;
}

/* Example Categories */
.example-category {
    margin-bottom: 4px;
}

.example-category-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    cursor: pointer;
    color: var(--color-label);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: background 0.15s ease;
}

.example-category-header:hover {
    background: var(--bg-hover);
}

.example-category-header .chevron {
    font-size: 10px;
    transition: transform 0.2s ease;
    color: var(--text-muted);
}

.example-category.collapsed .chevron {
    transform: rotate(-90deg);
}

.example-category-header .count {
    margin-left: auto;
    font-size: 10px;
    color: var(--text-muted);
    font-weight: 400;
}

.example-category-items {
    display: block;
}

.example-category.collapsed .example-category-items {
    display: none;
}

.example-item {
    display: block;
    width: 100%;
    padding: 8px 16px 8px 32px;
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    transition: background 0.15s ease;
}

.example-item:hover {
    background: var(--bg-hover);
}

.example-item-name {
    font-size: 12px;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.example-item-desc {
    font-size: 10px;
    color: var(--text-muted);
}

.example-item.highlighted {
    background: var(--bg-active);
}

.example-item.selected {
    background: var(--accent-color);
}

.example-item.selected .example-item-name {
    color: white;
}

.example-item.selected .example-item-desc {
    color: rgba(255, 255, 255, 0.7);
}

/* No results message */
.no-results {
    padding: 24px 16px;
    text-align: center;
    color: var(--text-muted);
    font-size: 12px;
}

/* Tab Bar */
.tab-bar {
    display: flex;
    align-items: center;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    height: 32px;
    padding: 0 4px;
    flex-shrink: 0;
    overflow-x: auto;
    overflow-y: hidden;
}

.tab-bar::-webkit-scrollbar {
    height: 4px;
}

.tab-list {
    display: flex;
    align-items: center;
    gap: 2px;
    flex: 1;
    min-width: 0;
}

.tab {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px 4px 12px;
    background: var(--bg-tertiary);
    border: 1px solid transparent;
    border-radius: 4px 4px 0 0;
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    max-width: 180px;
    min-width: 80px;
    transition: all 0.15s ease;
    user-select: none;
    position: relative;
}

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

.tab.active {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    border-bottom-color: var(--bg-secondary);
    color: var(--text-primary);
    margin-bottom: -1px;
    padding-bottom: 5px;
}

.tab.modified .tab-name::after {
    content: ' •';
    color: var(--warning-color);
}

/* Preview tabs (italic, like VS Code) */
.tab.preview .tab-name {
    font-style: italic;
}

.tab.preview {
    opacity: 0.85;
}

.tab-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tab-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    border: none;
    border-radius: 3px;
    background: transparent;
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1;
    cursor: pointer;
    opacity: 0;
    transition: all 0.15s ease;
}

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

.tab-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.tab-add-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border: none;
    border-radius: 4px;
    background: transparent;
    color: var(--text-secondary);
    font-size: 18px;
    cursor: pointer;
    transition: all 0.15s ease;
    flex-shrink: 0;
    margin-left: 4px;
}

.tab-add-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* Status Bar */
.status-bar {
    height: var(--statusbar-height);
    background: var(--accent-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 10px;
    font-size: 11px;
    flex-shrink: 0;
}

.status-left, .status-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.status-item {
    color: white;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.open {
    display: flex;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
}

.modal-content {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    max-width: 500px;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-content.wide {
    max-width: 700px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 14px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 20px;
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 16px;
    overflow-y: auto;
}

/* Examples Grid */
.examples-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.example-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 12px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.example-card:hover {
    border-color: var(--accent-color);
    background: var(--bg-hover);
}

.example-card h4 {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-label);
    margin-bottom: 4px;
}

.example-card p {
    font-size: 11px;
    color: var(--text-secondary);
}

/* Help Content */
.help-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.help-columns section:last-child {
    grid-column: 1 / -1;
}

.help-columns h3 {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-label);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.shortcuts-table {
    width: 100%;
    font-size: 11px;
}

.shortcuts-table td {
    padding: 4px 0;
}

.shortcuts-table td:first-child {
    width: 140px;
}

kbd {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 3px;
    padding: 2px 5px;
    font-size: 10px;
    font-family: inherit;
}

.help-code {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 12px;
    font-size: 11px;
    line-height: 1.5;
    overflow-x: auto;
    white-space: pre;
}

.command-list {
    font-size: 11px;
    line-height: 1.8;
}

.command-list code {
    background: var(--bg-tertiary);
    padding: 1px 4px;
    border-radius: 2px;
    color: var(--color-function);
}

/* Monaco Editor Custom Styles */
.monaco-editor {
    font-family: var(--font-family) !important;
    font-feature-settings: "ccmp" 1, "mark" 1, "mkmk" 1;  /* Enable combining marks */
    text-rendering: optimizeLegibility;
    -webkit-font-feature-settings: "ccmp" 1, "mark" 1, "mkmk" 1;
}

/* Firefox fix for combining diacritical marks */
@-moz-document url-prefix() {
    .monaco-editor .view-line span,
    .monaco-editor .view-line {
        letter-spacing: 0 !important;
    }
}

/* Output line decorations - styled to match VS Code extension */
.output-line-decoration {
    background-color: var(--output-bg) !important;
    border-left: 3px solid var(--output-border) !important;
}

.reference-line-decoration {
    background-color: var(--reference-bg) !important;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-hover);
    border-radius: 5px;
}

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

/* Responsive */
@media (max-width: 600px) {
    .btn-label {
        display: none;
    }
    
    .logo-subtitle {
        display: none;
    }
    
    .examples-grid {
        grid-template-columns: 1fr;
    }
    
    .help-columns {
        grid-template-columns: 1fr;
    }
}