:root {
    --bg-color: #f0f0f0;
    --container-bg-color: white;
    --text-color: #000000;
    --box-shadow-color: rgba(0,0,0,0.1);
    --button-bg-color: #4CAF50;
    --button-text-color: white;
    --header-bg: #ffffff;
    --header-shadow: rgba(0, 0, 0, 0.1);
    --link-color: #007bff;
    --link-hover-color: #0056b3;
    --fail-color: #dc3545;
    --success-color: #28a745;
}

[data-theme="dark"] {
    --bg-color: #121212;
    --container-bg-color: #1e1e1e;
    --text-color: #ffffff;
    --box-shadow-color: rgba(255,255,255,0.1);
    --header-bg: #1e1e1e;
    --header-shadow: rgba(255, 255, 255, 0.1);
    --link-color: #61dafb;
    --link-hover-color: #21a1f2;
}

body {
    font-family: sans-serif;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

.container {
    width: 90%;
    max-width: 960px;
    margin: 0 auto;
    padding: 1rem 0;
}

main.container {
    flex-grow: 1;
    text-align: center;
    background-color: var(--container-bg-color);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 8px var(--box-shadow-color);
    transition: background-color 0.3s;
    margin-top: 2rem;
    margin-bottom: 2rem;
}

/* Header and Navigation */
.site-header {
    width: 100%;
    background-color: var(--header-bg);
    box-shadow: 0 2px 4px var(--header-shadow);
    padding: 1rem 0;
}

.main-nav {
    display: flex;
    justify-content: center;
    gap: 2rem;
}

.main-nav a {
    color: var(--link-color);
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: bold;
    transition: color 0.2s;
}

.main-nav a:hover {
    color: var(--link-hover-color);
}


#generate-btn, #theme-toggle-btn {
    margin-top: 1rem;
    padding: 0.5rem 1rem;
    font-size: 1rem;
    cursor: pointer;
    border: 1px solid var(--text-color);
    background-color: transparent;
    color: var(--text-color);
    border-radius: 5px;
}

/* Original Number Balls */
.numbers-container {
    display: flex;
    justify-content: center;
    margin-top: 2rem;
}

.number-ball {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--button-bg-color);
    color: var(--button-text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    margin: 0 0.5rem;
}

/* Formspree Form Styles */
#partnership-form {
    margin-top: 2rem;
    padding: 1.5rem;
    border: 1px solid var(--box-shadow-color);
    border-radius: 8px;
    text-align: left;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

#partnership-form h2, main.container h1, main.container h2 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
    color: var(--text-color);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
    width: 100%;
    padding: 8px;
    box-sizing: border-box;
    border: 1px solid var(--box-shadow-color);
    border-radius: 4px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 1rem;
}

.form-group textarea {
    resize: vertical;
}

#partnership-form button[type="submit"] {
    display: block;
    width: 100%;
    padding: 10px;
    background-color: var(--button-bg-color);
    color: var(--button-text-color);
    border: none;
    border-radius: 5px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

#partnership-form button[type="submit"]:hover {
    opacity: 0.9;
}

/* --- History Page Styles --- */
.table-container {
    overflow-x: auto;
}

#history-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 2rem;
}

#history-table th, #history-table td {
    border: 1px solid var(--box-shadow-color);
    padding: 0.75rem;
    text-align: center;
}

#history-table th {
    background-color: var(--container-bg-color);
    font-weight: bold;
}

/* Small Number Balls for History Table */
.numbers-container-small {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 4px;
}

.number-ball-small {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: var(--button-bg-color);
    color: var(--button-text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.9rem;
    font-weight: bold;
}

/* Number Checker Form */
#check-form {
    margin-top: 1rem;
}
.number-input-container {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 1rem;
}
.number-input-container input {
    width: 50px;
    height: 50px;
    text-align: center;
    font-size: 1.2rem;
    border: 1px solid var(--box-shadow-color);
    border-radius: 5px;
    background-color: var(--bg-color);
    color: var(--text-color);
}
#check-form button[type="submit"] {
    padding: 0.75rem 1.5rem;
    font-size: 1.1rem;
    cursor: pointer;
    border: none;
    border-radius: 5px;
    background-color: var(--link-color);
    color: var(--button-text-color);
}
#check-form button[type="submit"]:hover {
    opacity: 0.9;
}

#check-result {
    margin-top: 1.5rem;
    font-size: 1.2rem;
    font-weight: bold;
    padding: 1rem;
    border-radius: 5px;
}

.result-success {
    color: var(--success-color);
    background-color: rgba(40, 167, 69, 0.1);
}

.result-fail {
    color: var(--fail-color);
    background-color: rgba(220, 53, 69, 0.1);
}


/* --- Footer Styles --- */
.site-footer {
    width: 100%;
    text-align: center;
    padding: 2rem 0;
    margin-top: auto;
    background-color: var(--header-bg);
    box-shadow: 0 -2px 4px var(--header-shadow);
}