:root {
    --bg-primary: #1e1e2e;
    --bg-secondary: #282838;
    --bg-tertiary: #313145;
    --bg-panel: #232334;
    --text-primary: #cdd6f4;
    --text-secondary: #a6adc8;
    --text-muted: #6c7086;
    --accent: #89b4fa;
    --accent-hover: #b4befe;
    --success: #a6e3a1;
    --warning: #f9e2af;
    --error: #f38ba8;
    --border: #45475a;
    
    /* Подсветка синтаксиса */
    --token-epistemic: #cba6f7;
    --token-tense: #89b4fa;
    --token-role: #a6e3a1;
    --token-modifier: #94e2d5;
    --token-quantifier: #f9e2af;
    --token-connective: #f38ba8;
    --token-pronoun: #fab387;
    --token-root: #cdd6f4;
    --token-name: #89dceb;
    --token-question: #f38ba8;
    --token-special: #f9e2af;
    --token-quote: #f5c2e7;
    --token-snippet: #fab387;
    
    /* Размеры панелей */
    --panel-width: 280px;
    --panel-collapsed: 0px;
    --header-height: 80px;
    --footer-height: 40px;
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

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

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-header {
    height: var(--header-height);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 1rem;
}

.main-header h1 {
    font-size: 1.8rem;
    color: var(--accent);
    margin-bottom: 0.25rem;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.main-content {
    flex: 1;
    display: flex;
    position: relative;
    overflow: hidden;
}

.main-footer {
    height: var(--footer-height);
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.main-footer a {
    color: var(--accent);
    text-decoration: none;
}

.main-footer a:hover {
    text-decoration: underline;
}

/* ========== БОКОВЫЕ ПАНЕЛИ ========== */

.side-panel {
    width: var(--panel-width);
    min-width: var(--panel-width);
    background: var(--bg-panel);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    transition: all 0.3s ease;
    overflow: hidden;
}

.side-panel.collapsed {
    width: 0;
    min-width: 0;
    border-width: 0;
}

.side-panel.expanded {
    position: fixed;
    top: var(--header-height);
    bottom: var(--footer-height);
    width: 100%;
    max-width: 100%;
    z-index: 100;
}

.left-panel {
    border-left: none;
}

.left-panel.expanded {
    left: 0;
}

.right-panel {
    border-right: none;
}

.right-panel.expanded {
    right: 0;
}

.panel-header {
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.panel-header h2 {
    font-size: 1rem;
    color: var(--text-primary);
}

.panel-controls {
    display: flex;
    gap: 0.5rem;
}

.panel-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    font-size: 1rem;
    border-radius: 4px;
    transition: all 0.2s;
}

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

.panel-content {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
}

/* Кнопки раскрытия свёрнутых панелей */
.panel-toggle {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 1rem 0.5rem;
    cursor: pointer;
    z-index: 50;
    transition: all 0.2s;
}

.panel-toggle:hover {
    background: var(--accent);
    color: var(--bg-primary);
}

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

.left-toggle {
    left: 0;
    border-left: none;
    border-radius: 0 4px 4px 0;
}

.right-toggle {
    right: 0;
    border-right: none;
    border-radius: 4px 0 0 4px;
}

/* ========== СПРАВКА ========== */

.help-content {
    font-size: 0.85rem;
}

.help-section {
    margin-bottom: 1.5rem;
}

.help-section h3 {
    color: var(--accent);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    padding-bottom: 0.25rem;
    border-bottom: 1px solid var(--border);
}

.help-list {
    list-style: none;
}

.help-list li {
    padding: 0.25rem 0;
    color: var(--text-secondary);
}

.particle {
    display: inline-block;
    padding: 0.1rem 0.4rem;
    border-radius: 3px;
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 0.8rem;
    margin-right: 0.25rem;
}

.particle.epistemic { background: var(--token-epistemic); color: var(--bg-primary); }
.particle.tense { background: var(--token-tense); color: var(--bg-primary); }
.particle.role { background: var(--token-role); color: var(--bg-primary); }
.particle.modifier { background: var(--token-modifier); color: var(--bg-primary); }
.particle.quantifier { background: var(--token-quantifier); color: var(--bg-primary); }
.particle.connective { background: var(--token-connective); color: var(--bg-primary); }
.particle.pronoun { background: var(--token-pronoun); color: var(--bg-primary); }
.particle.question { background: var(--token-question); color: var(--bg-primary); }
.particle.special { background: var(--token-special); color: var(--bg-primary); }

code.block {
    display: block;
    background: var(--bg-tertiary);
    padding: 0.5rem;
    border-radius: 4px;
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 0.8rem;
    margin-bottom: 0.5rem;
}

.example {
    color: var(--text-muted);
    font-style: italic;
    font-size: 0.8rem;
}

.example-block {
    background: var(--bg-tertiary);
    padding: 0.5rem;
    border-radius: 4px;
    margin-bottom: 0.5rem;
}

.example-block code {
    display: block;
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 0.8rem;
    color: var(--accent);
    margin-bottom: 0.25rem;
}

.example-block p {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin: 0;
}

/* ========== СЛОВАРЬ ========== */

.lexicon-search {
    margin-bottom: 0.75rem;
}

.lexicon-search input {
    width: 100%;
    padding: 0.5rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 0.9rem;
}

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

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

.lexicon-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    margin-bottom: 0.75rem;
}

.filter-btn {
    padding: 0.25rem 0.5rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-secondary);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
}

.filter-btn:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}

.filter-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--bg-primary);
}

.lexicon-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.lexicon-item {
    background: var(--bg-tertiary);
    padding: 0.75rem;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
}

.lexicon-item:hover {
    background: var(--bg-secondary);
    border-left: 3px solid var(--accent);
}

.lexicon-item .word {
    font-family: 'Fira Code', 'Consolas', monospace;
    color: var(--accent);
    font-size: 0.95rem;
}

.lexicon-item .meaning {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

.lexicon-item .category {
    display: inline-block;
    background: var(--bg-panel);
    padding: 0.1rem 0.3rem;
    border-radius: 3px;
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.lexicon-item.expanded .details {
    display: block;
}

.lexicon-item .details {
    display: none;
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border);
    font-size: 0.8rem;
}

.lexicon-item .valency {
    color: var(--text-secondary);
}

.lexicon-item .valency-role {
    display: inline-block;
    padding: 0.1rem 0.3rem;
    background: var(--bg-panel);
    border-radius: 3px;
    margin: 0.1rem;
    font-family: 'Fira Code', monospace;
}

.valency-role.required {
    border: 1px solid var(--success);
}

/* ========== ЦЕНТРАЛЬНАЯ ПАНЕЛЬ ========== */

.center-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    overflow-y: auto;
    min-width: 0;
}

/* Редактор */
.editor-section {
    margin-bottom: 1.5rem;
}

.editor-section label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.editor-container {
    position: relative;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 2px solid var(--bg-tertiary);
    transition: border-color 0.2s;
}

.editor-container:focus-within {
    border-color: var(--accent);
}

#editor {
    width: 100%;
    min-height: 80px;
    padding: 1rem;
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 1.1rem;
    background: transparent;
    border: none;
    color: var(--text-primary);
    resize: vertical;
    position: relative;
    z-index: 2;
}

#editor:focus {
    outline: none;
}

#editor::placeholder {
    color: var(--text-muted);
}

.highlighted {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 1rem;
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 1.1rem;
    white-space: pre-wrap;
    word-wrap: break-word;
    pointer-events: none;
    z-index: 1;
    color: transparent;
}

.controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 0.75rem;
}

button {
    padding: 0.6rem 1.25rem;
    font-size: 0.9rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

#parse-btn {
    background: var(--accent);
    color: var(--bg-primary);
    font-weight: 600;
}

#parse-btn:hover {
    background: var(--accent-hover);
}

#parse-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

#clear-btn {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

#clear-btn:hover {
    background: var(--bg-secondary);
}

.hint {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* Результаты */
.results-section {
    background: var(--bg-secondary);
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 2rem;
}

.tabs {
    display: flex;
    background: var(--bg-tertiary);
}

.tab {
    flex: 1;
    padding: 0.75rem;
    background: transparent;
    color: var(--text-secondary);
    border: none;
    border-bottom: 3px solid transparent;
    border-radius: 0;
    font-size: 0.85rem;
}

.tab:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.03);
}

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

.tab-content {
    padding: 1rem;
    min-height: 150px;
    max-height: 300px;
    overflow-y: auto;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

/* Токены */
.tokens-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.token {
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-family: 'Fira Code', monospace;
    font-size: 0.85rem;
}

.token-EPISTEMIC { background: var(--token-epistemic); color: var(--bg-primary); }
.token-TENSE { background: var(--token-tense); color: var(--bg-primary); }
.token-ROLE { background: var(--token-role); color: var(--bg-primary); }
.token-MODIFIER { background: var(--token-modifier); color: var(--bg-primary); }
.token-QUANTIFIER { background: var(--token-quantifier); color: var(--bg-primary); }
.token-CONNECTIVE { background: var(--token-connective); color: var(--bg-primary); }
.token-PRONOUN { background: var(--token-pronoun); color: var(--bg-primary); }
.token-ROOT { background: var(--bg-tertiary); color: var(--text-primary); border: 1px solid var(--text-secondary); }
.token-NAME { background: var(--token-name); color: var(--bg-primary); }
.token-QUESTION { background: var(--token-question); color: var(--bg-primary); }
.token-SPECIAL { background: var(--token-special); color: var(--bg-primary); }
.token-LQUOTE, .token-RQUOTE { background: var(--token-quote); color: var(--bg-primary); }
.token-LSNIPPET, .token-RSNIPPET { background: var(--token-snippet); color: var(--bg-primary); }
.token-QUOTE_CONTENT { background: var(--token-quote); color: var(--bg-primary); font-style: italic; }
.token-SNIPPET_CONTENT { background: var(--token-snippet); color: var(--bg-primary); font-style: italic; }

/* AST */
.ast-tree {
    font-family: 'Fira Code', monospace;
    font-size: 0.8rem;
    line-height: 1.4;
    overflow-x: auto;
    color: var(--text-primary);
    white-space: pre-wrap;
}

/* Логика */
.logic-formula {
    font-family: 'Fira Code', monospace;
    font-size: 0.95rem;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow-x: auto;
    line-height: 1.5;
}

/* Ошибки */
.errors-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.error-item {
    padding: 0.75rem;
    border-radius: 4px;
    font-size: 0.85rem;
}

.error-item.error {
    background: rgba(243, 139, 168, 0.15);
    border-left: 3px solid var(--error);
}

.error-item.warning {
    background: rgba(249, 226, 175, 0.15);
    border-left: 3px solid var(--warning);
}

.no-errors {
    color: var(--success);
    text-align: center;
    padding: 2rem;
}

/* ========== МАНИФЕСТ ========== */

.manifest-section {
    background: var(--bg-secondary);
    border-radius: 8px;
    padding: 1.5rem;
}

.manifest-section h2 {
    color: var(--accent);
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    text-align: center;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.manifest-content {
    display: grid;
    gap: 1.5rem;
}

.manifest-block {
    background: var(--bg-tertiary);
    padding: 1.25rem;
    border-radius: 8px;
}

.manifest-block h3 {
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: 0.75rem;
}

.manifest-block p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.manifest-block ul {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    padding-left: 1.25rem;
}

.manifest-block li {
    margin-bottom: 0.5rem;
}

.principles-list {
    list-style: none;
    padding-left: 0;
}

.principles-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.principles-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent);
}

.version-info {
    text-align: center;
    background: var(--bg-panel);
}

.version-info p {
    margin: 0.25rem 0;
    font-size: 0.85rem;
}

/* ========== АДАПТИВНОСТЬ ========== */

@media (max-width: 1200px) {
    :root {
        --panel-width: 240px;
    }
}

@media (max-width: 900px) {
    .side-panel {
        position: fixed;
        top: var(--header-height);
        bottom: var(--footer-height);
        z-index: 100;
    }
    
    .left-panel {
        left: 0;
        transform: translateX(-100%);
    }
    
    .left-panel:not(.collapsed) {
        transform: translateX(0);
    }
    
    .right-panel {
        right: 0;
        transform: translateX(100%);
    }
    
    .right-panel:not(.collapsed) {
        transform: translateX(0);
    }
    
    .panel-toggle {
        display: block;
    }
    
    .panel-toggle.hidden {
        display: block;
    }
}

@media (max-width: 600px) {
    .main-header h1 {
        font-size: 1.4rem;
    }
    
    .center-panel {
        padding: 1rem;
    }
    
    #editor {
        font-size: 1rem;
    }
    
    .controls {
        flex-wrap: wrap;
    }
    
    .hint {
        width: 100%;
        text-align: center;
    }
}