/* =============================================================================
 * hls2hdl — Universal High-Level Synthesis Studio Stylesheet
 * Dark EDA Theme with Strict Form Baseline Alignment & Mobile Responsive Layout
 * ============================================================================= */

:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: #182234;
    --accent-blue: #38bdf8;
    --accent-indigo: #6366f1;
    --accent-green: #22c55e;
    --accent-amber: #f59e0b;
    --accent-red: #ef4444;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: #334155;
    --border-focus: #38bdf8;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', Menlo, Monaco, Consolas, monospace;
}

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

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

#app-container {
    display: flex;
    flex-direction: column;
    width: 100%;
    min-height: 100vh;
}

/* Header & Menu Bar */
.header-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 20px;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

@media (max-width: 768px) {
    .header-bar {
        flex-wrap: wrap;
        gap: 10px;
    }
}

.brand-section {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-blue));
    color: white;
    font-weight: 800;
    font-size: 16px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(56, 189, 248, 0.25);
}

.brand-title h1 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 14px;
    font-size: 13px;
    font-weight: 600;
    border-radius: 6px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.15s ease-in-out;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-blue));
    color: white;
}

.btn-primary:hover {
    filter: brightness(1.1);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
}

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

.btn-secondary:hover {
    background-color: #475569;
}

.btn-success {
    background-color: #15803d;
    color: white;
}

.btn-success:hover {
    background-color: var(--accent-green);
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
    border-color: #b91c1c;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
}

.btn-danger:hover {
    background: linear-gradient(135deg, #dc2626, #b91c1c);
    border-color: #991b1b;
}

.save-status-badge {
    padding: 3px 8px;
    font-size: 11px;
    font-weight: 600;
    font-family: var(--font-mono);
    color: var(--accent-green);
    background-color: rgba(34, 197, 94, 0.15);
    border: 1px solid rgba(34, 197, 94, 0.3);
    border-radius: 4px;
    transition: opacity 0.3s ease;
}

.btn-outline {
    background: transparent;
    border-color: var(--border-color);
    color: var(--text-secondary);
}

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

.lang-switch {
    display: flex;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
}

.lang-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 6px 10px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
}

.lang-btn.active {
    background-color: var(--accent-indigo);
    color: white;
}

/* Main Workspace */
.main-workspace {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 320px;
    background-color: var(--bg-card);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.project-files-pane {
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-card);
}

.files-pane-toggle {
    width: 100%;
    padding: 12px 16px;
    background: transparent;
    border: none;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: background 0.15s ease;
}

.files-pane-toggle:hover {
    background-color: rgba(56, 189, 248, 0.06);
}

.files-pane-toggle .toggle-icon {
    font-size: 14px;
}

.files-pane-toggle .pane-title {
    flex: 1;
    text-align: left;
    color: var(--accent-blue);
}

.files-pane-toggle .file-count-badge {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 2px 7px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
}

.files-pane-toggle .toggle-chevron {
    font-size: 11px;
    color: var(--text-muted);
    transition: transform 0.2s ease;
}

.files-pane-toggle.open .toggle-chevron {
    transform: rotate(90deg);
}

.files-pane-content {
    max-height: 220px;
    overflow-y: auto;
    background-color: #0b1120;
    border-top: 1px solid var(--border-color);
}

.files-tree-list {
    padding: 6px 8px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.empty-files-hint {
    padding: 10px;
    font-size: 11px;
    color: var(--text-muted);
    text-align: center;
    font-style: italic;
}

.file-tree-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 8px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s ease;
    user-select: none;
}

.file-tree-item:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.file-tree-item.active {
    background-color: rgba(56, 189, 248, 0.15);
    color: var(--accent-blue);
    font-weight: 600;
}

.file-tree-item .file-tree-icon {
    font-size: 13px;
    flex-shrink: 0;
}

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

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

.sidebar-header {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent-blue);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sidebar-content {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* Form Input Baseline Alignment Standards */
.form-group {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    margin-bottom: 4px;
}

.form-label-aligned {
    min-height: 28px;
    display: flex;
    align-items: flex-end;
    line-height: 1.25;
    margin-bottom: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-control {
    width: 100%;
    padding: 8px 12px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 13px;
    outline: none;
    transition: border-color 0.15s ease;
}

.form-control:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    cursor: pointer;
    color: var(--text-primary);
}

.form-checkbox input[type="checkbox"] {
    accent-color: var(--accent-blue);
    width: 16px;
    height: 16px;
}

/* Editor & Viewers Area */
.editor-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-primary);
    overflow: hidden;
}

.tab-bar {
    display: flex;
    align-items: center;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0 8px;
    overflow-x: auto;
}

.tab-btn {
    padding: 10px 16px;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.15s ease;
    white-space: nowrap;
}

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

.tab-btn.active {
    color: var(--accent-blue);
    border-bottom-color: var(--accent-blue);
    background-color: rgba(56, 189, 248, 0.05);
}

.tab-content {
    flex: 1;
    display: none;
    position: relative;
    overflow: hidden;
}

.tab-content.active {
    display: flex;
    flex-direction: column;
}

.code-editor {
    flex: 1;
    width: 100%;
    height: 100%;
    padding: 16px;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.6;
    background-color: #0b1120;
    color: #e2e8f0;
    border: none;
    resize: none;
    outline: none;
    white-space: pre;
    overflow: auto;
}

/* CDFG / FSM Graph Toolbar & Viewport */
.graph-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 16px;
    background-color: #0f172a;
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 8px;
    z-index: 5;
    flex-shrink: 0;
}

.graph-toolbar-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.graph-toolbar-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.graph-zoom-badge {
    display: inline-block;
    padding: 2px 8px;
    background: #1e293b;
    color: var(--accent-blue);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 600;
}

.graph-toolbar-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.graph-toolbar-actions .btn {
    padding: 6px 12px;
    font-size: 12px;
    border-radius: 6px;
    min-height: 36px;
}

.graph-viewport-wrapper {
    flex: 1;
    overflow: auto;
    background-color: #0b1120;
    display: flex;
    position: relative;
    -webkit-overflow-scrolling: touch;
}

.graph-viewport {
    margin: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 100%;
    min-height: 100%;
    box-sizing: border-box;
}

.graph-viewport svg {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 4px 12px rgba(0,0,0,0.6));
    transition: width 0.15s ease-out, height 0.15s ease-out;
}

/* Clock Inputs Row (Period ns & Frequency Hz) */
.clock-settings-group {
    margin-bottom: 14px;
}

.clock-inputs-row {
    display: flex;
    gap: 8px;
    align-items: flex-start;
}

.clock-input-col {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.clock-sublabel {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.clock-freq-preview {
    font-size: 11px;
    color: var(--accent-blue);
    font-family: var(--font-mono);
    margin-top: 4px;
    text-align: right;
}

/* Waveform Toolbar & Canvas */
.waveform-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 16px;
    background-color: #0f172a;
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 8px;
    z-index: 5;
    flex-shrink: 0;
}

.waveform-toolbar-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.waveform-toolbar-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.waveform-zoom-badge {
    display: inline-block;
    padding: 2px 8px;
    background: #1e293b;
    color: var(--accent-blue);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 600;
}

.waveform-toolbar-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.waveform-toolbar-actions .btn {
    padding: 6px 12px;
    font-size: 12px;
    border-radius: 6px;
    min-height: 36px;
}

.waveform-container {
    flex: 1;
    background-color: #050811;
    display: flex;
    flex-direction: column;
    padding: 12px 16px;
    overflow: hidden !important;
    position: relative;
}

.waveform-scroll-wrapper {
    display: block;
    width: 100%;
    overflow-x: auto !important;
    overflow-y: hidden !important;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 6px;
}

.waveform-scroll-wrapper::-webkit-scrollbar {
    height: 12px;
}

.waveform-scroll-wrapper::-webkit-scrollbar-track {
    background: #0f172a;
    border-radius: 6px;
}

.waveform-scroll-wrapper::-webkit-scrollbar-thumb {
    background: #38bdf8;
    border-radius: 6px;
}

.waveform-scroll-wrapper::-webkit-scrollbar-thumb:hover {
    background: #0284c7;
}

.waveform-canvas {
    background-color: #080d1a;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    display: block;
}

/* Waveform Fullscreen Mode (100% viewport) */
#tabWaveform.waveform-fullscreen {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    z-index: 99999 !important;
    background-color: #050811 !important;
    margin: 0 !important;
    padding: 0 !important;
    display: flex !important;
    flex-direction: column !important;
}

#tabWaveform.waveform-fullscreen .waveform-toolbar {
    padding: 12px 24px;
    background-color: #0b1120;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

#tabWaveform.waveform-fullscreen .waveform-container {
    flex: 1;
    overflow: hidden !important;
    padding: 16px 24px;
    display: flex;
    flex-direction: column;
}

#tabWaveform.waveform-fullscreen .waveform-scroll-wrapper {
    flex: 1;
    overflow-x: auto !important;
    overflow-y: auto !important;
    display: flex;
    flex-direction: column;
}

/* CodeMirror Dark EDA Theme integration */
.CodeMirror {
    height: 100% !important;
    max-width: 100% !important;
    font-family: var(--font-mono) !important;
    font-size: 13px !important;
    line-height: 1.6 !important;
    background-color: #0b1120 !important;
    color: #e2e8f0 !important;
}

.CodeMirror-scroll {
    margin-right: 0 !important;
    padding-right: 0 !important;
}

.CodeMirror-sizer {
    margin-right: 0 !important;
    padding-right: 0 !important;
}

.CodeMirror-gutters {
    background-color: #080d1a !important;
    border-right: 1px solid var(--border-color) !important;
}

.CodeMirror-linenumber {
    color: #475569 !important;
}

.CodeMirror-cursor {
    border-left: 2px solid var(--accent-blue) !important;
}

.CodeMirror-selected {
    background-color: rgba(56, 189, 248, 0.2) !important;
}

.cm-s-default .cm-keyword { color: #f43f5e !important; font-weight: bold; }
.cm-s-default .cm-def { color: #38bdf8 !important; }
.cm-s-default .cm-variable { color: #f8fafc !important; }
.cm-s-default .cm-variable-2 { color: #818cf8 !important; }
.cm-s-default .cm-variable-3 { color: #34d399 !important; }
.cm-s-default .cm-type { color: #a78bfa !important; }
.cm-s-default .cm-string { color: #34d399 !important; }
.cm-s-default .cm-number { color: #fbbf24 !important; }
.cm-s-default .cm-comment { color: #64748b !important; font-style: italic; }
.cm-s-default .cm-operator { color: #38bdf8 !important; }
.cm-s-default .cm-builtin { color: #c084fc !important; }

/* Bottom Console Drawer */
.console-drawer {
    height: 240px;
    background-color: #090e1a;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.console-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 16px;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    font-size: 12px;
    font-weight: 600;
}

.stepper-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
}

.step-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
}

.step-item.active {
    color: var(--accent-blue);
}

.step-item.completed {
    color: var(--accent-green);
}

.step-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--text-muted);
}

.step-item.active .step-dot {
    background-color: var(--accent-blue);
    box-shadow: 0 0 8px var(--accent-blue);
}

.step-item.completed .step-dot {
    background-color: var(--accent-green);
}

.console-logs {
    flex: 1;
    padding: 12px 16px;
    font-family: var(--font-mono);
    font-size: 12px;
    line-height: 1.5;
    color: #cbd5e1;
    overflow-y: auto;
    white-space: pre-wrap;
}

.metrics-ribbon {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 6px 16px;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    font-size: 12px;
}

.metric-pill {
    display: flex;
    align-items: center;
    gap: 6px;
}

.metric-pill span.val {
    color: var(--accent-blue);
    font-weight: 700;
    font-family: var(--font-mono);
}

/* Badges */
.badge {
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
}

.badge-ready { background-color: var(--bg-tertiary); color: var(--text-secondary); }
.badge-running { background-color: rgba(56, 189, 248, 0.2); color: var(--accent-blue); border: 1px solid var(--accent-blue); }
.badge-completed { background-color: rgba(34, 197, 94, 0.2); color: var(--accent-green); border: 1px solid var(--accent-green); }
.badge-failed { background-color: rgba(239, 68, 68, 0.2); color: var(--accent-red); border: 1px solid var(--accent-red); }

/* Responsive Mobile & Tablet Rules */
@media (max-width: 900px) {
    .header-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        padding: 12px;
    }

    .brand-section {
        width: 100%;
    }

    .header-actions {
        width: 100%;
        flex-wrap: wrap;
        gap: 8px;
    }

    .header-actions .btn {
        min-height: 44px;
        flex: 1 1 calc(50% - 8px);
        font-size: 12px;
        padding: 8px 10px;
    }

    .header-actions .lang-switch {
        min-height: 44px;
    }

    .main-workspace {
        flex-direction: column;
        overflow: visible;
    }

    .sidebar {
        width: 100% !important;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        max-height: none;
    }

    .editor-container {
        min-height: 420px;
        width: 100%;
        max-width: 100%;
        min-width: 0;
        overflow: hidden;
    }

    .tab-bar {
        flex-wrap: wrap;
        overflow-x: hidden;
    }

    .tab-btn {
        min-height: 44px;
        flex: 1 1 auto;
    }

    .stepper-bar {
        flex-wrap: wrap;
        overflow-x: hidden;
    }

    .metrics-ribbon {
        flex-wrap: wrap;
        gap: 8px;
    }

    .graph-toolbar {
        padding: 8px 10px;
        gap: 8px;
    }

    .graph-toolbar-info {
        width: 100%;
        justify-content: space-between;
    }

    .graph-toolbar-actions {
        width: 100%;
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 6px;
    }

    .graph-toolbar-actions .btn {
        min-height: 44px;
        font-size: 11px;
        padding: 6px 4px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .waveform-toolbar {
        padding: 8px 10px;
        gap: 8px;
    }

    .waveform-toolbar-info {
        width: 100%;
        justify-content: space-between;
    }

    .waveform-toolbar-actions {
        width: 100%;
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 6px;
    }

    .waveform-toolbar-actions .btn {
        min-height: 44px;
        font-size: 11px;
        padding: 6px 4px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
}