/* Global reset-ish */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

/* THEME CLASSES */
body.theme-light {
    background-color: #f7f2ff; /* very light purple */
    color: #2a103c;            /* deep purple text */
}

body.theme-dark {
    background-color: #1b0626; /* dark purple */
    color: #f8f2ff;            /* light text */
}

/* HEADER + NAV */
header {
    background-color: #6a1fb0;
    color: white;
    padding: 15px 0;
}

body.theme-dark header {
    background-color: #3b0a63;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    gap: 25px;
}

nav li {
    display: inline-block;
}

nav a {
    color: #ffffff;
    text-decoration: none;
    font-weight: 600;
}

nav a:hover {
    text-decoration: underline;
}

/* MAIN CONTENT */
main {
    max-width: 900px;
    margin: 30px auto;
    background-color: #ffffff;
    border-radius: 10px;
    padding: 20px 25px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

body.theme-dark main {
    background-color: #2a103c;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.50);
}

h1, h2 {
    text-align: center;
    color: #4b147a;
}

body.theme-dark h1,
body.theme-dark h2 {
    color: #e6d7ff;
}

p {
    line-height: 1.6;
}

/* FORM ELEMENTS */
.form-group {
    margin-bottom: 15px;
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 5px;
    font-weight: 600;
}

.form-group input[type="text"],
.form-group input[type="email"] {
    padding: 8px 10px;
    border-radius: 6px;
    border: 1px solid #c7a7ff;
    font-size: 0.95rem;
}

body.theme-dark .form-group input[type="text"],
body.theme-dark .form-group input[type="email"] {
    background-color: #3b184f;
    border-color: #e0c4ff;
    color: #ffffff;
}

/* RADIO GROUPS */
.radio-group {
    margin-bottom: 15px;
}

.radio-group legend,
.radio-group span {
    font-weight: 600;
    margin-bottom: 8px;
    display: block;
}

.radio-group label {
    margin-right: 15px;
}

/* BUTTONS */
button,
input[type="submit"],
input[type="reset"] {
    padding: 8px 20px;
    border-radius: 6px;
    border: none;
    background: linear-gradient(90deg, #7b2fb8, #4a147a);
    color: #ffffff;
    font-weight: 600;
    cursor: pointer;
    font-size: 0.95rem;
}

button:hover,
input[type="submit"]:hover,
input[type="reset"]:hover {
    background: linear-gradient(90deg, #5c228a, #300b53);
}

/* FORM ACTIONS */
.form-actions {
    margin-top: 10px;
    display: flex;
    gap: 10px;
}

/* OUTPUT AREA */
#output {
    margin-top: 20px;
    padding: 15px;
    border-radius: 8px;
    background-color: #f0e6ff;
    min-height: 40px;
}

body.theme-dark #output {
    background-color: #3b184f;
}

/* FOOTER */
footer {
    text-align: center;
    padding: 15px 10px 25px;
    font-size: 0.9rem;
    color: #4d2f69;
}

body.theme-dark footer {
    color: #f2e7ff;
}

.theme-switcher {
    margin: 10px 0;
    display: flex;
    justify-content: center;
    gap: 10px;
}

.theme-switcher button {
    font-size: 0.8rem;
    padding: 6px 14px;
}