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

:root {
    --bg-primary: #f5f5f5;
    --bg-secondary: #ffffff;
    --text-primary: #333333;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    --accent-color: #2196F3;
    --success-color: #4CAF50;
    --danger-color: #f44336;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

body.dark-mode {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --border-color: #404040;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

header {
    background-color: var(--bg-secondary);
    padding: 20px;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

h1 {
    font-size: 24px;
    color: var(--accent-color);
}

.theme-toggle {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    transition: opacity 0.3s;
}

.theme-toggle:hover {
    opacity: 0.8;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.card {
    background-color: var(--bg-secondary);
    border-radius: 8px;
    padding: 20px;
    box-shadow: var(--shadow);
}

.card h2 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--accent-color);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
}

.info-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

.info-item:last-child {
    border-bottom: none;
}

.info-label {
    font-weight: 600;
    color: var(--text-secondary);
}

.info-value {
    color: var(--text-primary);
    text-align: right;
}

.status-indicator {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 5px;
}

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

.status-offline {
    background-color: var(--danger-color);
}

.button-group {
    display: flex;
    gap: 10px;
    margin-top: 15px;
    flex-wrap: wrap;
}

button {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    transition: opacity 0.3s;
}

button:hover {
    opacity: 0.8;
}

button.secondary {
    background-color: var(--text-secondary);
}

button.danger {
    background-color: var(--danger-color);
}

input[type="text"],
input[type="number"] {
    width: 100%;
    padding: 8px;
    margin: 5px 0;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
}

.storage-list {
    max-height: 200px;
    overflow-y: auto;
    margin-top: 10px;
}

.storage-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px;
    margin: 5px 0;
    background-color: var(--bg-primary);
    border-radius: 5px;
}

.storage-item-content {
    flex: 1;
    margin-right: 10px;
}

.storage-key {
    font-weight: 600;
    color: var(--accent-color);
}

.storage-value {
    color: var(--text-secondary);
    font-size: 12px;
    word-break: break-all;
}

.timer-display {
    font-size: 32px;
    text-align: center;
    margin: 20px 0;
    font-weight: bold;
    color: var(--accent-color);
}

.section-target {
    min-height: 300px;
    padding: 40px;
    margin: 20px 0;
    background-color: var(--bg-secondary);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.section-target h3 {
    color: var(--accent-color);
    margin-bottom: 10px;
}

.scroll-nav {
    position: fixed;
    top: 100px;
    right: 20px;
    background-color: var(--bg-secondary);
    padding: 15px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.scroll-nav button {
    display: block;
    width: 100%;
    margin: 5px 0;
}

.scroll-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.scroll-to-top.visible {
    display: flex;
}

.current-section {
    position: fixed;
    bottom: 80px;
    right: 20px;
    background-color: var(--bg-secondary);
    padding: 10px 15px;
    border-radius: 5px;
    box-shadow: var(--shadow);
    font-size: 12px;
    color: var(--text-secondary);
}

.alert-result {
    margin-top: 10px;
    padding: 10px;
    background-color: var(--bg-primary);
    border-radius: 5px;
    border-left: 4px solid var(--accent-color);
}

.url-parts {
    font-family: monospace;
    font-size: 12px;
    background-color: var(--bg-primary);
    padding: 10px;
    border-radius: 5px;
    margin-top: 10px;
}

@media (max-width: 768px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .scroll-nav {
        display: none;
    }

    h1 {
        font-size: 18px;
    }
}