:root {
    --background-color: #f5f5f7;
    --text-color: #1d1d1f;
    --header-bg: #000;
    --header-text: #fff;
    --button-bg: #0071e3;
    --button-text: #fff;
    --input-bg: #fff;
    --input-border: #d2d2d7;
    --select-bg: #fff;
    --select-border: #d2d2d7;
    --preview-border: #d2d2d7;
    --select-arrow-color: #1d1d1f;

    --dark-background-color: #000;
    --dark-text-color: #fff;
    --dark-header-bg: #1d1d1f;
    --dark-header-text: #fff;
    --dark-button-bg: #2997ff;
    --dark-button-text: #fff;
    --dark-input-bg: #1e1e1e;
    --dark-input-border: #444;
    --dark-select-bg: #1e1e1e;
    --dark-select-border: #444;
    --dark-preview-border: #444;
    --dark-select-arrow-color: #fff;
}

body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "San Francisco", "Helvetica Neue", Helvetica, Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    transition: all 0.3s ease;
    line-height: 1.5;
}

body.light-mode {
    --background-color: #f5f5f7;
    --text-color: #1d1d1f;
    --header-bg: #000;
    --header-text: #fff;
    --button-bg: #0071e3;
    --button-text: #fff;
    --input-bg: #fff;
    --input-border: #d2d2d7;
    --select-bg: #fff;
    --select-border: #d2d2d7;
    --preview-border: #d2d2d7;
    --select-arrow-color: #1d1d1f;
}

body.dark-mode {
    --background-color: #000;
    --text-color: #fff;
    --header-bg: #1d1d1f;
    --header-text: #fff;
    --button-bg: #2997ff;
    --button-text: #fff;
    --input-bg: #1e1e1e;
    --input-border: #444;
    --select-bg: #1e1e1e;
    --select-border: #444;
    --preview-border: #444;
    --select-arrow-color: #fff;
}

header {
    position: fixed;
    top: 0;
    right: 0;
    padding: 10px 20px;
    background-color: var(--header-bg);
    color: var(--header-text);
    z-index: 1000;
}

.mode-toggle {
    cursor: pointer;
    font-size: 20px;
}

.mode-toggle:hover {
    opacity: 0.8;
}

main {
    max-width: 1200px;
    margin: 80px auto 20px;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

h1 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-color);
    text-align: center;
}

.container {
    display: flex;
    width: 100%;
}

.controls {
    background-color: var(--input-bg);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    display: grid;
    gap: 15px;
    width: 100%;
    max-width: 600px;
    flex: 1;
}

label {
    font-size: 14px;
    font-weight: 500;
    margin-right: 0;
}

.options {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
}

select, input[type="number"], input[type="color"] {
    padding: 8px;
    border: 1px solid var(--input-border);
    border-radius: 5px;
    background-color: var(--input-bg);
    color: var(--text-color);
    font-size: 14px;
    width: 100%;
    max-width: 200px;
}

input[type="range"] {
    padding: 0;
    border: none;
    width: 100%;
    margin: 0 10px;
}

button {
    padding: 10px 20px;
    background-color: var(--button-bg);
    color: var(--button-text);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    width: 100%;
}

button:hover {
    opacity: 0.9;
}

.button-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
}

.button-group label {
    margin-bottom: 5px;
}

.button-group select {
    margin-bottom: 10px;
}

.button-group button {
    width: 100%;
}

/* Responsive Design */
@media (max-width: 768px) {
    main {
        margin-top: 60px;
    }

    h1 {
        font-size: 1.5rem;
    }

    .container {
        flex-direction: column;
    }

    .controls {
        padding: 15px;
        grid-template-columns: 1fr;
        max-width: 100%;
        width: 100%;
    }

    #preview {
        width: 100%;
        max-width: 100%;
        margin-top: 20px;
    }
}

#preview {
    border: 1px solid var(--preview-border);
    border-radius: 5px;
    padding: 10px;
    margin-top: 0;
    width: 100%;
    max-width: 600px;
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

#preview svg {
    width: 100%;
    height: auto;
}

select {
    background-color: var(--select-bg);
    border: 1px solid var(--select-border);
    appearance: none;
    padding-right: 20px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23[COLOR]' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    max-width: 200px;
}

body.light-mode select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%231d1d1f' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
}

body.dark-mode select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23ffffff' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
}

@media (prefers-color-scheme: dark) {
    body {
        --background-color: var(--dark-background-color);
        --text-color: var(--dark-text-color);
        --header-bg: var(--dark-header-bg);
        --header-text: var(--dark-header-text);
        --button-bg: var(--dark-button-bg);
        --button-text: var(--dark-button-text);
        --input-bg: var(--dark-input-bg);
        --input-border: var(--dark-input-border);
        --select-bg: var(--dark-select-bg);
        --select-border: var(--dark-select-border);
        --preview-border: var(--dark-preview-border);
        --select-arrow-color: var(--dark-select-arrow-color);
    }
}

@media (min-width: 769px) {
    .container {
        flex-direction: row;
        align-items: flex-start;
    }

    .controls {
        margin-right: 20px;
    }

    #preview {
        margin-top: 0;
    }
}