:root {
    --primary-color: #2c3e50;
    --secondary-color: #34495e;
    --accent-color: #3498db;
    --text-color: #333;
    --bg-color: #f4f4f9;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    margin: 0;
    padding: 0;
    color: var(--text-color);
}

.container {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Login Styles */
.login-container {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    width: 350px;
    text-align: center;
}

.tabs {
    display: flex;
    margin-bottom: 1rem;
    border-bottom: 1px solid #ddd;
}

.tab-btn {
    flex: 1;
    padding: 10px;
    border: none;
    background: none;
    cursor: pointer;
    font-weight: bold;
    color: #777;
}

.tab-btn.active {
    color: var(--accent-color);
    border-bottom: 2px solid var(--accent-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

form input {
    width: 100%;
    padding: 10px;
    margin: 8px 0;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
}

button {
    width: 100%;
    padding: 10px;
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    margin-top: 10px;
}

button:hover {
    background-color: #2980b9;
}

.message {
    margin-top: 1rem;
    font-size: 0.9rem;
}

/* App Layout Styles */
.app-layout {
    display: flex;
    width: 90%;
    height: 90%;
    background: white;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
    border-radius: 8px;
    overflow: hidden;
}

.sidebar {
    width: 250px;
    background-color: var(--primary-color);
    color: white;
    padding: 1rem;
    display: flex;
    flex-direction: column;
}

.user-info {
    margin-bottom: 2rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding-bottom: 1rem;
}

.logout-btn {
    background-color: #c0392b;
    font-size: 0.8rem;
    padding: 5px;
    margin-top: 5px;
}

.menu button {
    background-color: var(--secondary-color);
    margin-bottom: 10px;
    text-align: left;
    padding-left: 15px;
}

.menu button:hover {
    background-color: #46627f;
}

.auto-update-control {
    margin-top: 2rem;
    background: rgba(0,0,0,0.2);
    padding: 10px;
    border-radius: 4px;
}

.timer {
    font-size: 0.8rem;
    color: #ccc;
    margin-top: 5px;
}

.main-area {
    flex: 1;
    padding: 1rem;
    display: flex;
    flex-direction: column;
}

.log-area {
    flex: 1;
    background-color: #1e1e1e;
    color: #00ff00;
    font-family: 'Consolas', monospace;
    padding: 1rem;
    overflow-y: auto;
    border-radius: 4px;
}

.log-entry {
    margin-bottom: 5px;
    border-bottom: 1px solid #333;
    padding-bottom: 2px;
}

.timestamp {
    color: #888;
    margin-right: 10px;
}