/* Core Design System matching CCNA Tool Gen */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    
    /* Terminal Colors */
    --term-bg: #0f172a;
    --term-text: #e2e8f0;
    --term-prompt: #38bdf8;
    --term-comment: #64748b;
    
    /* Font Stacks */
    --font-ui: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'Fira Code', 'Courier New', Courier, monospace;
}

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

body {
    font-family: var(--font-ui);
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
.app-header {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 2rem;
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

@media (min-width: 768px) {
    .header-content {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

.back-link {
    display: inline-block;
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
    font-size: 0.9rem;
}

.back-link:hover {
    color: var(--primary-color);
}

.title-container h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 0.25rem;
}

.title-container p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.badge-container {
    display: flex;
    gap: 0.5rem;
}

.platform-badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.build-badge {
    background-color: #f1f5f9;
    color: #475569;
}

.hs-badge {
    background-color: #ecfdf5;
    color: #059669;
    border: 1px solid #a7f3d0;
}

/* Main Layout */
.app-container {
    display: flex;
    flex-direction: column;
    max-width: 1400px;
    margin: 2rem auto;
    width: 100%;
    padding: 0 2rem;
    gap: 2rem;
    flex: 1;
}

@media (min-width: 1024px) {
    .app-container {
        flex-direction: row;
        align-items: flex-start;
    }
}

/* Configuration Panel (Left) */
.configuration-panel {
    flex: 1;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.panel-header {
    background-color: #f8fafc;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.panel-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
}

/* Accordion Design */
.accordion-category {
    border-bottom: 1px solid var(--border-color);
}
.accordion-category:last-child {
    border-bottom: none;
}

.accordion-header {
    padding: 1rem 1.5rem;
    cursor: pointer;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--card-bg);
    transition: background-color 0.2s;
    user-select: none;
}
.accordion-header:hover {
    background-color: #f1f5f9;
}

.accordion-body {
    display: none;
    padding: 1rem 1.5rem;
    background: #fafafa;
    border-top: 1px solid #f1f5f9;
}
.accordion-body.open {
    display: block;
}

/* Configuration Items & Form Inputs */
.config-item {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
    box-shadow: 0 1px 2px rgba(0,0,0,0.02);
}
.config-item:last-child {
    margin-bottom: 0;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    color: var(--text-main);
}
.checkbox-label input[type="checkbox"] {
    width: 1.1rem;
    height: 1.1rem;
    accent-color: var(--primary-color);
    cursor: pointer;
}

.guide-text {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 0.5rem 0 0.75rem 1.85rem;
    line-height: 1.5;
}

/* Dynamic Input Styling */
.inputs-container-wrapper {
    margin-top: 1rem;
    margin-left: 1.85rem;
    padding-left: 1rem;
    border-left: 2px solid #e2e8f0;
}

.config-instance {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: flex-end;
    margin-bottom: 1rem;
    background: #f8fafc;
    padding: 1rem;
    border-radius: 6px;
    border: 1px dashed #cbd5e1;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    flex: 1;
    min-width: 140px;
}
.input-group label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.input-group input[type="text"] {
    padding: 0.5rem 0.75rem;
    border: 1px solid #cbd5e1;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    outline: none;
    transition: all 0.2s;
    background: #ffffff;
}
.input-group input[type="text"]:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(37,99,235,0.1);
}

/* Buttons */
.btn {
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}
.btn-primary {
    background-color: var(--primary-color);
    color: white;
}
.btn-primary:hover {
    background-color: var(--primary-hover);
}
.btn-secondary {
    background-color: #f1f5f9;
    color: #475569;
    border: 1px solid #cbd5e1;
}
.btn-secondary:hover {
    background-color: #e2e8f0;
    color: #1e293b;
}

.add-instance-btn {
    background: none;
    border: none;
    color: var(--primary-color);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    padding: 0.25rem 0;
    display: inline-block;
}
.add-instance-btn:hover {
    text-decoration: underline;
}

.remove-instance-btn {
    background: #fee2e2;
    color: #dc2626;
    border: 1px solid #fecaca;
    padding: 0.45rem 0.75rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}
.remove-instance-btn:hover {
    background: #fecaca;
}

/* Terminal Panel (Right) */
.terminal-panel {
    flex: 1;
    background: var(--term-bg);
    border-radius: 12px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    border: 1px solid #334155;
    position: sticky;
    top: 6rem;
    height: calc(100vh - 8rem);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.terminal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: #1e293b;
    border-bottom: 1px solid #334155;
}
.terminal-header h2 {
    color: #f8fafc;
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 0.025em;
}
.terminal-actions {
    display: flex;
    gap: 0.75rem;
}

.terminal-window {
    position: relative;
    padding: 1.5rem;
    flex: 1;
    overflow-y: auto;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--term-text);
}

.terminal-window pre {
    white-space: pre-wrap;
    word-break: break-all;
}

.prompt {
    color: var(--term-prompt);
    font-weight: 600;
    margin-right: 0.5rem;
}
.comment {
    color: var(--term-comment);
    display: block;
    margin-bottom: 0.25rem;
    user-select: none;
}

.terminal-scrollbar-fade {
    position: absolute;
    left: 0;
    right: 0;
    height: 1.5rem;
    pointer-events: none;
    z-index: 10;
}
.terminal-scrollbar-fade.top {
    top: 0;
    background: linear-gradient(to bottom, var(--term-bg), transparent);
}
.terminal-scrollbar-fade.bottom {
    bottom: 0;
    background: linear-gradient(to top, var(--term-bg), transparent);
}

/* Custom Scrollbar for Terminal */
.terminal-window::-webkit-scrollbar {
    width: 10px;
}
.terminal-window::-webkit-scrollbar-track {
    background: rgba(15, 23, 42, 0.5);
}
.terminal-window::-webkit-scrollbar-thumb {
    background: #475569;
    border-radius: 5px;
    border: 2px solid var(--term-bg);
}
.terminal-window::-webkit-scrollbar-thumb:hover {
    background: #64748b;
}