:root {
    --bg-main: #0a0a0c;
    --bg-sidebar: #121217;
    --bg-terminal: #0d0d11;
    --border-color: #24242e;
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --accent: #00d2ff;
    --accent-hover: #00b4db;
    --danger: #ef4444;
    --success: #22c55e;
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-sans);
    height: 100vh;
    overflow: hidden;
}

.app-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    z-index: 10;
}

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

.logo {
    background: linear-gradient(135deg, var(--accent), #3a7bd5);
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.2rem;
    color: white;
    box-shadow: 0 4px 12px rgba(0, 210, 255, 0.3);
}

.brand span {
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: -0.025em;
}

.settings-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.settings-group label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

select, input[type="number"] {
    background-color: #1e1e26;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    padding: 0.6rem;
    font-size: 0.9rem;
    outline: none;
    cursor: pointer;
    transition: var(--transition);
}

select:focus, input[type="number"]:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(0, 210, 255, 0.1);
}

.actions-vertical {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: auto;
}

.btn {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-primary {
    background-color: var(--accent);
    color: #000;
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.btn-danger:hover:not(:disabled) {
    background-color: var(--danger);
    color: white;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.status-panel {
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    border: 1px solid var(--border-color);
}

.status-item {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
}

.status-item .label {
    color: var(--text-secondary);
}

.status-item .value {
    font-weight: 600;
}

.status-on { color: var(--success); }
.status-off { color: var(--danger); }

/* Main Content */
.main-content {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.main-header {
    height: 60px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 1.5rem;
    background-color: var(--bg-sidebar);
}

.toolbar {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.btn-icon {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    padding: 0.5rem;
    border-radius: 6px;
    transition: var(--transition);
}

.btn-icon:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.05);
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

input[type="checkbox"] {
    accent-color: var(--accent);
    cursor: pointer;
}

/* Terminal */
.terminal-container {
    flex: 1;
    background-color: var(--bg-terminal);
    margin: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    position: relative;
    box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.5);
}

.terminal-output {
    height: 100%;
    overflow-y: auto;
    padding: 1rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.6;
    color: #e2e8f0;
    white-space: pre-wrap;
    word-break: break-all;
}

.terminal-output::-webkit-scrollbar {
    width: 8px;
}

.terminal-output::-webkit-scrollbar-track {
    background: transparent;
}

.terminal-output::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.terminal-output::-webkit-scrollbar-thumb:hover {
    background: #3f3f4e;
}

.log-entry {
    display: block;
    margin-bottom: 0.25rem;
    animation: fadeIn 0.1s ease-out;
}

.timestamp {
    color: #475569;
    margin-right: 0.75rem;
    user-select: none;
}

.sent-data {
    color: var(--accent);
    font-weight: 500;
}

.log-meta {
    color: var(--accent);
    opacity: 0.7;
    font-size: 0.85em;
    font-weight: 500;
}

.status-on {
    color: var(--success);
    background: rgba(34, 197, 94, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
}

.status-off {
    color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateX(-5px); }
    to { opacity: 1; transform: translateX(0); }
}

/* Footer Input */
.input-footer {
    padding: 0 1.5rem 1.5rem 1.5rem;
}

.input-container {
    background-color: #1e1e26;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    padding: 0.5rem 0.5rem 0.5rem 1rem;
    transition: var(--transition);
}

.input-container:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(0, 210, 255, 0.1);
}

#commandInput {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.95rem;
    outline: none;
    padding: 0.5rem 0;
}

#commandInput::placeholder {
    color: #4b5563;
}