:root {
    --bg-color: #f5f7fa;
    --card-bg: #ffffff;
    --glass-border: #e2e8f0;
    --glass-shadow: rgba(0, 0, 0, 0.06);
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --primary-light: #eff6ff;
    --primary-glow: rgba(59, 130, 246, 0.15);
    --secondary-color: #64748b;
    --text-color: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --success-color: #10b981;
    --success-light: #ecfdf5;
    --danger-color: #ef4444;
    --danger-light: #fef2f2;
    --purple-color: #8b5cf6;
    --purple-light: #f5f3ff;
    --border-radius: 12px;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    min-height: 100vh;
    padding: 24px;
    overflow-x: hidden;
}

.glass-container {
    width: 100%;
    max-width: 960px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

header {
    margin-bottom: 4px;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

h1 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-color);
}

.app-id {
    font-size: 12px;
    font-weight: 500;
    color: var(--primary-color);
    background: var(--primary-light);
    padding: 3px 8px;
    border-radius: 6px;
    margin-left: 8px;
    vertical-align: middle;
}

.actions {
    display: flex;
    gap: 8px;
}

button {
    padding: 8px 16px;
    border-radius: 8px;
    font-family: inherit;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.2s ease;
    cursor: pointer;
    border: 1px solid transparent;
}

.primary-btn {
    background: var(--primary-color);
    color: white;
    border: none;
}

.primary-btn:hover {
    background: var(--primary-hover);
    box-shadow: 0 2px 8px var(--primary-glow);
}

.secondary-btn {
    background: white;
    color: var(--text-secondary);
    border: 1px solid var(--glass-border);
}

.secondary-btn:hover {
    background: var(--bg-color);
    border-color: #cbd5e1;
}

.device-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 12px;
}

.device-card {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 16px;
    transition: all 0.2s ease;
    position: relative;
}

.device-card:hover {
    box-shadow: 0 4px 12px var(--glass-shadow);
    border-color: #cbd5e1;
}

.device-info h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-color);
}

.device-info p {
    font-size: 12px;
    color: var(--text-muted);
    margin: 3px 0;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 6px;
}

.status-online {
    background: var(--success-color);
}

.status-offline {
    background: #cbd5e1;
}

.wake-btn {
    margin-top: 12px;
    width: 100%;
    background: var(--primary-light);
    color: var(--primary-color);
    border: 1px solid #dbeafe;
    font-size: 13px;
    padding: 8px;
}

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

.wake-btn:disabled {
    opacity: 0.4;
    cursor: default;
}

.tag {
    font-size: 11px;
    background: var(--purple-light);
    color: var(--purple-color);
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 500;
}

.edit-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 4px;
    background: none;
    border: none;
    font-size: 15px;
    color: var(--text-muted);
    opacity: 0;
    transition: all 0.2s;
}

.device-card:hover .edit-btn {
    opacity: 1;
}

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

.delete-btn {
    position: absolute;
    top: 12px;
    right: 36px;
    padding: 4px;
    background: none;
    border: none;
    font-size: 15px;
    color: var(--text-muted);
    opacity: 0;
    transition: all 0.2s;
}

.device-card:hover .delete-btn {
    opacity: 1;
}

.delete-btn:hover {
    color: var(--danger-color);
}

.group-actions {
    grid-column: 1 / -1;
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
    flex-wrap: wrap;
}

.group-btn {
    background: var(--purple-light);
    color: var(--purple-color);
    border: 1px solid #e9d5ff;
    font-size: 12px;
    padding: 6px 12px;
}

.group-btn:hover {
    background: var(--purple-color);
    color: white;
}

.shutdown-btn {
    margin-top: 6px;
    width: 100%;
    background: var(--danger-light);
    color: var(--danger-color);
    border: 1px solid #fecaca;
    font-size: 13px;
    padding: 8px;
}

.shutdown-btn:hover {
    background: var(--danger-color);
    color: white;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(4px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.hidden {
    display: none;
}

.glass-modal {
    background: white;
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 24px;
    width: 90%;
    max-width: 600px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.glass-modal h2 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-color);
}

/* Scan Table */
.scan-table-container {
    max-height: 350px;
    overflow-y: auto;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    margin-bottom: 10px;
}

.scan-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 13px;
}

.scan-table th {
    background: var(--bg-color);
    padding: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
}

.scan-table td {
    padding: 12px;
    border-bottom: 1px solid var(--glass-border);
    vertical-align: middle;
}

.scan-table tr:last-child td {
    border-bottom: none;
}

.scan-table tr:hover {
    background: var(--primary-light);
}

.scan-table input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.text-muted {
    color: var(--text-muted);
    font-size: 11px;
}

/* Spinner */
.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--glass-border);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 16px auto;
}

/* Toast */
.toast {
    position: fixed;
    bottom: -50px;
    left: 50%;
    transform: translateX(-50%);
    background: white;
    border: 1px solid var(--glass-border);
    padding: 10px 20px;
    border-radius: 10px;
    color: var(--text-color);
    font-size: 13px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 2000;
}

.toast.show {
    bottom: 30px;
}

.toast-success { border-left: 3px solid var(--success-color); }
.toast-error { border-left: 3px solid var(--danger-color); }
.toast-info { border-left: 3px solid var(--primary-color); }

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Modal Form Styles */
.form-group {
    margin-bottom: 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.form-group label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input {
    background: var(--bg-color);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 10px 12px;
    color: var(--text-color);
    font-size: 13px;
    font-family: inherit;
    transition: all 0.2s ease;
}

.form-group input:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 20px;
}

.loading-state {
    text-align: center;
    padding: 40px;
    color: var(--text-muted);
    font-size: 13px;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
    font-size: 14px;
    grid-column: 1 / -1;
}

.error {
    text-align: center;
    padding: 40px;
    color: var(--danger-color);
    font-size: 13px;
    grid-column: 1 / -1;
}

.status-bar {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-muted);
    padding-top: 8px;
}

footer {
    border-top: 1px solid var(--glass-border);
    padding-top: 12px;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: all 0.2s;
}

.icon-btn:hover {
    background: var(--glass-bg);
    color: var(--text-color);
}

.help-content h3 {
    font-size: 14px;
    font-weight: 600;
    margin-top: 16px;
    margin-bottom: 8px;
    color: var(--text-color);
}

.help-content h3:first-child {
    margin-top: 0;
}

.help-content p, .help-content ul {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 12px;
}

.help-content ul {
    padding-left: 20px;
}

.help-content li {
    margin-bottom: 6px;
}

.help-content code {
    background: var(--bg-color);
    padding: 2px 4px;
    border-radius: 4px;
    font-family: monospace;
    color: var(--text-color);
}

/* Mobile Optimization */
@media (max-width: 600px) {
    body {
        padding: 16px;
    }

    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .actions {
        width: 100%;
        justify-content: space-between;
    }

    .actions button {
        flex: 1;
        padding: 8px 12px;
        font-size: 13px;
        white-space: nowrap;
    }

    .actions .icon-btn {
        flex: 0 0 auto;
    }
    
    .device-grid {
        grid-template-columns: 1fr;
    }
    
    .glass-modal {
        width: 92%;
        padding: 20px 16px;
    }

    .scan-table-container {
        overflow-x: auto;
    }
}