/* Global Styles */
body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f8f9fa;
    color: #333;
}

h1, h2 {
    font-weight: 600;
}

h1 {
    font-size: 28px;
    color: #333;
}

h2 {
    font-size: 24px;
    margin-top: 30px;
    color: #333;
}

/* Page and Container */
.page {
    text-align: center;
    padding: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

#login-page {
    margin-top: 50px;
}

#app-page {
    display: none;
}

/* Form Inputs and Buttons */
input {
    padding: 12px;
    margin: 15px 0;
    border-radius: 8px;
    border: 1px solid #ccc;
    width: 100%;
    max-width: 300px;
    box-sizing: border-box;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

input:focus {
    border-color: #4CAF50;
    outline: none;
}

button {
    padding: 12px 20px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #45a049;
}

button:active {
    background-color: #388e3c;
}

/* Timer Section */
.timer-btn {
    background-color: #f39c12;
    padding: 12px 30px;
    margin: 10px;
    border: none;
    border-radius: 8px;
    font-size: 18px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.timer-btn:hover {
    background-color: #e67e22;
}

#timer-display {
    font-size: 40px;
    margin: 30px 0;
    font-weight: bold;
}

#reset-timer {
    padding: 12px 20px;
    background-color: #e74c3c;
    margin: 10px;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

#reset-timer:hover {
    background-color: #c0392b;
}

#reset-timer:active {
    background-color: #e74c3c;
}

/* Navbar for Sections */
#navbar {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
}

#navbar button {
    padding: 12px 30px;
    background-color: #2c3e50;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.3s ease;
}

#navbar button:hover {
    background-color: #34495e;
}

#navbar button:active {
    background-color: #2c3e50;
}

/* Section Styling */
.section {
    display: none;
    margin-top: 40px;
}

#leaderboard, #daily-streaks {
    list-style-type: none;
    padding: 0;
    text-align: left;
    max-width: 600px;
    margin: 0 auto;
}

#leaderboard li, #daily-streaks li {
    padding: 15px;
    margin: 10px 0;
    background-color: #ecf0f1;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    font-size: 18px;
}

#leaderboard li {
    font-weight: 500;
}

#daily-streaks li {
    font-weight: 400;
}

/* Login Page Styling */
#login-page h1 {
    font-size: 32px;
    margin-bottom: 30px;
}

#login-error {
    color: #e74c3c;
    font-size: 16px;
    margin-top: 10px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .page {
        padding: 20px;
    }

    .timer-btn, #reset-timer, #navbar button {
        width: 100%;
        margin: 5px 0;
    }

    #leaderboard li, #daily-streaks li {
        font-size: 16px;
    }

    #timer-display {
        font-size: 35px;
    }
}