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

:root {
    --primary-color: #3498db;
    --secondary-color: #2ecc71;
    --background-color: #f0f2f5;
    --text-color: #333;
    --white: #fff;
    --light-gray: #f9f9f9;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --inset-shadow-color: rgba(0, 0, 0, 0.05);
    --glow-color: rgba(52, 152, 219, 0.4);
}

[data-theme="dark"] {
    --background-color: #1a1a2e;
    --text-color: #e0e0e0;
    --white: #16213e;
    --light-gray: #0f3460;
    --shadow-color: rgba(0, 0, 0, 0.4);
    --inset-shadow-color: rgba(0, 0, 0, 0.3);
    --glow-color: rgba(52, 152, 219, 0.6);
}

#theme-toggle {
    position: fixed;
    top: 1rem;
    right: 1rem;
    background: var(--white);
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    font-size: 1.4rem;
    cursor: pointer;
    box-shadow: 0 4px 10px var(--shadow-color);
    transition: background 0.3s, transform 0.2s;
    z-index: 100;
}

#theme-toggle:hover {
    transform: scale(1.1);
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 2rem 1rem;
}

.container {
    background-color: var(--white);
    padding: 2rem 3rem;
    border-radius: 15px;
    box-shadow: 0 15px 30px var(--shadow-color);
    text-align: center;
    width: 100%;
    max-width: 500px;
    transition: transform 0.3s ease;
}

h1 {
    color: var(--primary-color);
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.lotto-display {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 2.5rem 0;
    padding: 1.5rem;
    background-color: var(--light-gray);
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--inset-shadow-color) inset;
}

#generate-btn {
    background-color: var(--primary-color);
    color: #fff;
    border: none;
    padding: 1rem 2rem;
    font-size: 1.2rem;
    font-weight: 700;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s, box-shadow 0.3s;
    box-shadow: 0 4px 10px var(--shadow-color);
}

#generate-btn:hover {
    background-color: #2980b9;
    box-shadow: 0 0 20px var(--glow-color);
}

.history {
    margin-top: 2.5rem;
    text-align: left;
}

h2 {
    color: var(--secondary-color);
    border-bottom: 2px solid var(--light-gray);
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}

#history-list {
    list-style: none;
    padding: 0;
    max-height: 200px;
    overflow-y: auto;
}

#history-list li {
    background-color: var(--light-gray);
    padding: 0.75rem;
    border-radius: 5px;
    margin-bottom: 0.5rem;
    font-size: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

footer {
    margin-top: 2rem;
    font-size: 0.8rem;
    color: #aaa;
    text-align: center;
}

.disqus-container {
    background-color: var(--white);
    padding: 2rem 3rem;
    border-radius: 15px;
    box-shadow: 0 15px 30px var(--shadow-color);
    width: 100%;
    max-width: 500px;
    margin-top: 2rem;
}

.disqus-container h2 {
    color: var(--primary-color);
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    text-align: center;
    border-bottom: none;
}

.contact-container {
    background-color: var(--white);
    padding: 2rem 3rem;
    border-radius: 15px;
    box-shadow: 0 15px 30px var(--shadow-color);
    width: 100%;
    max-width: 500px;
    margin-top: 2rem;
}

.contact-container h2 {
    color: var(--primary-color);
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    text-align: center;
    border-bottom: none;
}

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 1rem;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 0.4rem;
}

.form-group input,
.form-group textarea {
    padding: 0.75rem;
    border: 1.5px solid var(--light-gray);
    border-radius: 8px;
    font-size: 1rem;
    font-family: 'Roboto', sans-serif;
    background-color: var(--light-gray);
    color: var(--text-color);
    transition: border-color 0.2s;
    resize: none;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.submit-btn {
    width: 100%;
    background-color: var(--primary-color);
    color: #fff;
    border: none;
    padding: 0.9rem;
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s, box-shadow 0.3s;
    box-shadow: 0 4px 10px var(--shadow-color);
    margin-top: 0.5rem;
}

.submit-btn:hover {
    background-color: #2980b9;
    box-shadow: 0 0 20px var(--glow-color);
}

.form-success {
    display: none;
    text-align: center;
    color: var(--secondary-color);
    font-weight: 700;
    margin-top: 1rem;
}