/* APEX-EDA Dark IDE Theme */
:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --bg-hover: #30363d;
    --border-color: #30363d;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --accent-purple: #6f64ac;
    --accent-purple-light: #8b7fd6;
    --accent-green: #44b75e;
    --accent-red: #da3633;
    --accent-orange: #d29922;
    --accent-blue: #58a6ff;
    --font-mono: 'Cascadia Code', 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    --sidebar-width: 260px;
    --toolbar-height: 48px;
    --chat-height: 300px;
    --results-width: 320px;
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
}

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

html, body {
    height: 100%;
    overflow: hidden;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.5;
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--bg-hover); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ===================== Toolbar ===================== */
#toolbar {
    height: var(--toolbar-height);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 16px;
    z-index: 100;
}

.toolbar-left {
    display: flex;
    align-items: center;
    gap: 16px;
    min-width: 300px;
}

.toolbar-center {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    justify-content: center;
}

.toolbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 200px;
    justify-content: flex-end;
}

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

.logo-text {
    font-weight: 700;
    font-size: 16px;
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.design-selector {
    display: flex;
    align-items: center;
    gap: 4px;
}

.design-selector select {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 4px 8px;
    font-size: 13px;
    max-width: 180px;
    cursor: pointer;
}

/* ===================== Buttons ===================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.15s ease;
    white-space: nowrap;
}

.btn:hover { background: var(--bg-hover); border-color: var(--text-muted); }

.btn-sm { padding: 4px 8px; font-size: 12px; }

.btn-icon {
    padding: 4px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
}
.btn-icon:hover { background: var(--bg-hover); color: var(--text-primary); }

.btn-primary {
    background: var(--accent-green);
    color: #000;
    border-color: var(--accent-green);
    font-weight: 600;
}
.btn-primary:hover { background: #3da351; border-color: #3da351; }

.btn-secondary {
    background: var(--accent-blue);
    color: #000;
    border-color: var(--accent-blue);
    font-weight: 600;
}
.btn-secondary:hover { background: #4794e8; border-color: #4794e8; }

.btn-accent {
    background: var(--accent-purple);
    color: #fff;
    border-color: var(--accent-purple);
    font-weight: 600;
}
.btn-accent:hover { background: var(--accent-purple-light); border-color: var(--accent-purple-light); }

/* ===================== Badge ===================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-idle { background: var(--bg-tertiary); color: var(--text-muted); }
.badge-running { background: rgba(88, 166, 255, 0.2); color: var(--accent-blue); }
.badge-success { background: rgba(68, 183, 94, 0.2); color: var(--accent-green); }
.badge-error { background: rgba(218, 54, 51, 0.2); color: var(--accent-red); }

/* ===================== Progress Bar ===================== */
.progress-bar-container {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 120px;
}

.progress-bar {
    flex: 1;
    height: 4px;
    background: var(--bg-tertiary);
    border-radius: 2px;
    overflow: hidden;
    position: relative;
}

.progress-bar::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    background: var(--accent-green);
    border-radius: 2px;
    transition: width 0.3s ease;
    width: 0%;
}

.progress-bar.active::after {
    animation: progress-pulse 1.5s ease-in-out infinite;
}

@keyframes progress-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

#progress-text {
    font-size: 11px;
    color: var(--text-secondary);
    white-space: nowrap;
}

/* ===================== Main Layout ===================== */
#main-layout {
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr var(--results-width);
    height: calc(100vh - var(--toolbar-height));
    overflow: hidden;
}

/* ===================== Sidebar ===================== */
#sidebar {
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h3 {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
}

/* File Tree */
.file-tree {
    flex: 1;
    overflow-y: auto;
    padding: 4px 0;
}

.tree-node { user-select: none; }

.tree-folder > .folder-label {
    display: flex;
    align-items: center;
    padding: 3px 12px;
    cursor: pointer;
    font-size: 13px;
    color: var(--text-secondary);
}

.tree-folder > .folder-label:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.tree-folder > .tree-children { display: none; }
.tree-folder.expanded > .tree-children { display: block; }

.tree-file {
    display: flex;
    align-items: center;
    padding: 3px 12px 3px 28px;
    cursor: pointer;
    font-size: 13px;
    color: var(--text-secondary);
}

.tree-file:hover { background: var(--bg-hover); color: var(--text-primary); }
.tree-file.active { background: rgba(111, 100, 172, 0.2); color: var(--accent-purple-light); }

/* ===================== Editor Area ===================== */
#editor-area {
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

/* ===================== Results Panel ===================== */
#results-panel {
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.results-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
}

.tab {
    padding: 8px 12px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    white-space: nowrap;
    border-bottom: 2px solid transparent;
    transition: all 0.15s;
}

.tab:hover { color: var(--text-primary); background: var(--bg-hover); }
.tab.active {
    color: var(--accent-purple-light);
    border-bottom-color: var(--accent-purple);
}

.results-content {
    flex: 1;
    overflow-y: auto;
    padding: 12px;
}

.tab-content { display: none; }
.tab-content.active { display: block; }

/* Metric Cards */
.metric-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px;
    margin-bottom: 8px;
    transition: border-color 0.2s;
}

.metric-card:hover { border-color: var(--text-muted); }

.metric-label {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.metric-value {
    font-size: 20px;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--text-primary);
}

/* Placeholder */
.placeholder-text {
    color: var(--text-muted);
    font-style: italic;
    text-align: center;
    padding: 40px 20px;
    font-size: 13px;
}

/* ===================== Log Container ===================== */
#log-container {
    font-family: var(--font-mono);
    font-size: 12px;
    line-height: 1.6;
    color: var(--text-secondary);
    max-height: 100%;
    overflow-y: auto;
}

.log-entry {
    padding: 2px 0;
    border-bottom: 1px solid rgba(48, 54, 61, 0.5);
}

.log-info { color: var(--text-secondary); }
.log-success { color: var(--accent-green); }
.log-error { color: var(--accent-red); }
.log-warning { color: var(--accent-orange); }
.log-debug { color: var(--text-muted); font-style: italic; }

/* ===================== Chat Panel ===================== */
.chat-panel {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--chat-height);
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    z-index: 1000;
    transition: height 0.3s ease;
    display: flex;
    flex-direction: column;
}

.chat-panel.minimized {
    height: auto;
}

.chat-panel.minimized .chat-body {
    display: none;
}

.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 16px;
    cursor: pointer;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    font-size: 13px;
    font-weight: 600;
    color: var(--accent-purple-light);
}

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

.chat-controls {
    display: flex;
    align-items: center;
    gap: 8px;
}

.chat-toggle {
    font-size: 16px;
    color: var(--text-secondary);
    transition: transform 0.2s;
}

.chat-panel.minimized .chat-toggle { transform: rotate(-90deg); }

.chat-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 12px 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.message {
    padding: 8px 12px;
    border-radius: var(--radius-md);
    font-size: 13px;
    line-height: 1.5;
    max-width: 85%;
}

.ai-message {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    align-self: flex-start;
    color: var(--text-primary);
}

.user-message {
    background: rgba(111, 100, 172, 0.2);
    border: 1px solid rgba(111, 100, 172, 0.3);
    align-self: flex-end;
    color: var(--text-primary);
}

.chat-message-verilog {
    background: #1e1e2e;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    margin-top: 4px;
    font-family: var(--font-mono);
    font-size: 11px;
    overflow-x: auto;
    white-space: pre-wrap;
    color: var(--accent-green);
    max-height: 200px;
    overflow-y: auto;
}

.chat-input-area {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    padding: 8px 16px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-tertiary);
}

.chat-input-area textarea {
    flex: 1;
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    font-family: var(--font-sans);
    font-size: 13px;
    resize: none;
    outline: none;
}

.chat-input-area textarea:focus {
    border-color: var(--accent-purple);
}

.send-btn {
    padding: 8px 12px;
    min-width: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===================== Modal ===================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    width: 400px;
    max-width: 90vw;
}

.modal h2 {
    margin-bottom: 16px;
    font-size: 18px;
    color: var(--text-primary);
}

.form-group {
    margin-bottom: 12px;
}

.form-group label {
    display: block;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 4px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    font-size: 14px;
    outline: none;
}

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

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 16px;
}

/* ===================== Responsive ===================== */
@media (max-width: 1200px) {
    #main-layout {
        grid-template-columns: var(--sidebar-width) 1fr 0px;
    }
    #results-panel {
        position: fixed;
        right: 0;
        top: var(--toolbar-height);
        height: calc(100vh - var(--toolbar-height) - var(--chat-height));
        width: var(--results-width);
        transform: translateX(100%);
        transition: transform 0.3s;
    }
    #results-panel.open {
        transform: translateX(0);
    }
}

@media (max-width: 768px) {
    :root {
        --sidebar-width: 0px;
    }
    #sidebar { display: none; }
    .toolbar-center .btn span { display: none; }
    #main-layout {
        grid-template-columns: 0px 1fr 0px;
    }
}

/* ===================== Loading Spinner ===================== */
.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--text-muted);
    border-top-color: var(--accent-purple);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}