:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --background-color-light: #f8f9fa;
    --text-color-light: #212529;
    --header-bg-light: #ffffff;
    --section-bg-light: #ffffff;
    --box-shadow-light: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);

    --background-color-dark: #121212;
    --text-color-dark: #e0e0e0;
    --header-bg-dark: #1e1e1e;
    --section-bg-dark: #2c2c2c;
    --box-shadow-dark: 0 0.5rem 1rem rgba(255, 255, 255, 0.05);
}

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background: var(--background-color-light);
    color: var(--text-color-light);
    transition: background-color 0.3s, color 0.3s;
}

body.dark-theme {
    background: var(--background-color-dark);
    color: var(--text-color-dark);
}

header {
    background: var(--header-bg-light);
    color: var(--text-color-light);
    padding: 1.5rem 2rem;
    text-align: center;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--box-shadow-light);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: background-color 0.3s, box-shadow 0.3s;
}

body.dark-theme header {
    background: var(--header-bg-dark);
    color: var(--text-color-dark);
    box-shadow: var(--box-shadow-dark);
}

header h1 {
    margin: 0;
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    font-size: 1.8rem;
}

nav ul {
    padding: 0;
    list-style: none;
    margin: 0;
}

nav ul li {
    display: inline;
    margin: 0 15px;
}

nav a {
    color: var(--text-color-light);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

body.dark-theme nav a {
    color: var(--text-color-dark);
}

nav a:hover {
    color: var(--primary-color);
}

main {
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

section {
    background: var(--section-bg-light);
    margin-bottom: 2rem;
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: var(--box-shadow-light);
    transition: transform 0.3s, box-shadow 0.3s;
}

body.dark-theme section {
    background: var(--section-bg-dark);
    box-shadow: var(--box-shadow-dark);
}

section h2 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    font-size: 2rem;
    display: flex;
    align-items: center;
    color: var(--primary-color);
}

section h2 i {
    margin-right: 15px;
    font-size: 1.8rem;
}

button, #partnership button {
    background: var(--primary-color);
    color: #fff;
    border: none;
    padding: 12px 20px;
    cursor: pointer;
    border-radius: 5px;
    font-weight: 600;
    transition: background-color 0.3s, transform 0.3s;
}

button:hover, #partnership button:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
}

#theme-toggle {
    background-color: var(--secondary-color);
    margin-right: 20px;
}

#theme-toggle:hover {
    background-color: #5a6268;
}

footer {
    text-align: center;
    padding: 2rem;
    background: var(--header-bg-light);
    color: var(--text-color-light);
    margin-top: 2rem;
    transition: background-color 0.3s, color 0.3s;
}

body.dark-theme footer {
    background: var(--header-bg-dark);
    color: var(--text-color-dark);
}

/* Form Styles */
#partnership form {
    display: flex;
    flex-direction: column;
}

#partnership label {
    margin-bottom: 8px;
    font-weight: 600;
}

#partnership input,
#partnership textarea {
    padding: 12px;
    margin-bottom: 1rem;
    border: 1px solid #ced4da;
    border-radius: 5px;
    background-color: #fff;
    color: #495057;
    transition: border-color 0.3s, box-shadow 0.3s;
}

#partnership input:focus,
#partnership textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

body.dark-theme #partnership input,
body.dark-theme #partnership textarea {
    background-color: #3b3b3b;
    color: #e0e0e0;
    border-color: #555;
}

#partnership button {
    width: 150px;
    align-self: flex-start;
}