@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;700&display=swap');

:root {
    --bg-color: #f4f7fa;
    --sidebar-bg: #ffffff;
    --main-bg: #ffffff;
    --text-color: #333;
    --text-secondary: #666;
    --primary-color: #007bff;
    --primary-hover: #0056b3;
    --danger-color: #dc3545;
    --danger-hover: #c82333;
    --border-color: #dee2e6;
    --shadow-color: rgba(0, 0, 0, 0.05);
    --status-disconnected: #f03e3e;
    --status-connected: #37b24d;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 16px;
    line-height: 1.6;
}

.app-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    flex-shrink: 0;
}

.sidebar-header {
    margin-bottom: 2rem;
}

.sidebar-header h1 {
    font-size: 1.5rem;
    color: var(--text-color);
}

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

.main-nav {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    padding: 0.75rem 1rem;
    border-radius: 6px;
    font-weight: 500;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-link:hover {
    background-color: var(--bg-color);
}

.nav-link.active {
    background-color: var(--primary-color);
    color: #fff;
}

/* Sidebar Footer */
.sidebar-footer {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.connect-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 0.75rem;
}

.connect-status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--status-disconnected);
    margin-right: 0.75rem;
    transition: background-color 0.3s ease;
}

.connect-btn.connected .connect-status-dot {
    background-color: var(--status-connected);
}

.at-log-controls {
    display: flex;
}

#at-log {
    width: 100%;
    height: 150px;
    background-color: #2d3748;
    color: #e2e8f0;
    border: 1px solid #4a5568;
    border-radius: 6px;
    padding: 0.5rem;
    font-family: 'Menlo', 'Monaco', monospace;
    font-size: 0.8rem;
    resize: vertical;
}


/* Main Content */
.main-content {
    flex-grow: 1;
    overflow-y: auto;
    padding: 2rem;
}

.page {
    display: none;
}
.page.active {
    display: block;
}

.page-header h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

/* Controls Grid */
.controls-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

fieldset {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    background-color: var(--main-bg);
    box-shadow: 0 4px 6px var(--shadow-color);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

fieldset.full-width {
    grid-column: 1 / -1;
}

legend {
    font-weight: 500;
    padding: 0 0.5rem;
    color: var(--primary-color);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.inline {
    flex-direction: row;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}
.form-group.inline label {
    margin-bottom: 0;
}


.form-group label {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    font-weight: 500;
}

input[type="text"] {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    width: 100%;
}
.form-group.inline input[type="text"] {
    width: auto;
    flex-grow: 1;
}
input[type="text"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}

.button-group {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

button {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
    font-weight: 500;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    background-color: #e9ecef;
    color: #495057;
    transition: all 0.2s ease;
}
button:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 4px var(--shadow-color);
}
button:active {
    transform: translateY(0);
    box-shadow: none;
}

button:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

.connect-btn,
button[data-command*="write"],
button[data-command*="lock"] {
    background-color: var(--primary-color);
    color: white;
}
.connect-btn:hover,
button[data-command*="write"]:hover {
    background-color: var(--primary-hover);
}
.connect-btn:disabled,
button[data-command*="write"]:disabled {
    background-color: var(--primary-color) !important;
}


button.danger,
button[data-command*="delete"] {
    background-color: var(--danger-color);
    color: white;
}
button.danger:hover,
button[data-command*="delete"]:hover {
    background-color: var(--danger-hover);
}


/* Band List */
.band-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1rem;
}

.band-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

small {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

input[type="checkbox"] {
    cursor: pointer;
}
.large-checkbox {
    width: 1.2rem;
    height: 1.2rem;
}

/* Responsive */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 1rem;
    }
    .main-nav {
        flex-direction: row;
        justify-content: space-around;
        gap: 0.25rem;
    }
    .sidebar-footer {
        display: none; /* Hide log on small screens for simplicity */
    }
    .main-content {
        padding: 1rem;
    }
    .controls-grid {
        grid-template-columns: 1fr;
    }
}