:root {
    --bg-color: #f0f2f5;
    --container-bg: #ffffff;
    --text-color: #333333;
    --shadow-color-1: rgba(0, 0, 0, 0.1);
    --shadow-color-2: rgba(0, 0, 0, 0.1);
    --toggle-bg: #ffffff;
    --toggle-color: #333333;
}

body[data-theme="dark"] {
    --bg-color: #0f0f10;
    --container-bg: #1e1e24;
    --text-color: #f5f6f7;
    --shadow-color-1: rgba(0, 0, 0, 0.4);
    --shadow-color-2: rgba(0, 0, 0, 0.3);
    --toggle-bg: #2d2d34;
    --toggle-color: #ffffff;
}

body {
    font-family: 'Arial', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: var(--bg-color);
    background-image: url("data:image/svg+xml,%3Csvg width='6' height='6' viewBox='0 0 6 6' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%239C92AC' fill-opacity='0.1'%3E%3Cpath d='M5 0h1L0 6V5zM6 5v1H5z'/%3E%3C/g%3E%3C/svg%3E");
    transition: background-color 0.3s ease, color 0.3s ease;
    position: relative;
}

.container {
    text-align: center;
    padding: 40px;
    border-radius: 15px;
    background-color: var(--container-bg);
    box-shadow: 0 10px 20px var(--shadow-color-1), 0 6px 6px var(--shadow-color-2);
    width: 90%;
    max-width: 500px;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

h1 {
    font-size: 2.5rem;
    color: var(--text-color);
    margin-bottom: 30px;
    transition: color 0.3s ease;
}

.theme-toggle-container {
    position: absolute;
    top: 20px;
    right: 20px;
}

#theme-toggle-btn {
    background-color: var(--toggle-bg);
    color: var(--toggle-color);
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    font-size: 1.4rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 10px var(--shadow-color-1);
}

#theme-toggle-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 15px var(--shadow-color-1);
}

#theme-toggle-btn:active {
    transform: scale(0.95);
}

body:not([data-theme="dark"]) .sun-icon {
    display: none;
}

body[data-theme="dark"] .moon-icon {
    display: none;
}

.partnership-section {
    margin-top: 20px;
    text-align: left;
}

.partnership-section h2 {
    color: var(--text-color);
    margin-bottom: 20px;
}

.partnership-section form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.partnership-section label {
    color: var(--text-color);
}

.partnership-section input,
.partnership-section textarea {
    padding: 10px;
    border-radius: 5px;
    border: 1px solid var(--shadow-color-1);
    background-color: var(--bg-color);
    color: var(--text-color);
}

.partnership-section button {
    background: linear-gradient(45deg, #6a11cb, #2575fc);
    color: white;
    border: none;
    padding: 10px;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}