:root {
    --primary-color: #5B48D9;
    --primary-light: #7C6AE6;
    --background-color: #0F0F13;
    --card-background: #1A1B23;
    --text-color: #FFFFFF;
    --text-secondary: #9CA3AF;
    --border-color: #2D2E3D;
    --input-background: #13141B;
    --success-color: #10B981;
    --error-color: #EF4444;
    --transition: all 0.3s ease;
    --checkbox-hover-bg: #2A2D3D;
}

body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 2rem 0;
    min-height: 100vh;
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1.5;
    box-sizing: border-box;
    overflow-y: auto;
}

#addon {
    background: var(--card-background);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    padding: 2.5rem;
    width: min(90%, 480px);
    margin: auto;
    animation: fadeIn 0.5s ease-out;
    position: relative;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.logo {
    display: flex;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.logo img {
    width: 80px;
    height: 80px;
    border-radius: 12px;
    transition: var(--transition);
}

.logo img:hover {
    transform: scale(1.05);
}

h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-color);
    margin: 0;
    text-align: center;
}

h2 {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin: 0.5rem 0;
    font-weight: 400;
    text-align: center;
}

.separator {
    height: 1px;
    background: var(--border-color);
    margin: 1.5rem 0;
}

.form-element {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

input[type="text"], select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--input-background);
    color: var(--text-color);
    font-size: 0.95rem;
    transition: var(--transition);
    box-sizing: border-box;
}

input[type="text"]:focus, select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(91, 72, 217, 0.1);
}

select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%239CA3AF'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1.25rem;
    padding-right: 3rem;
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
}

select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(91, 72, 217, 0.1);
}

select option {
    padding: 0.5rem;
    background: var(--input-background);
    color: var(--text-color);
}

@-moz-document url-prefix() {
    select {
        padding-right: 2rem;
        background-position: right 0.5rem center;
    }
}

select::-ms-expand {
    display: none;
}

.form-element select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--input-background);
    color: var(--text-color);
    font-size: 0.95rem;
    line-height: 1.5;
    cursor: pointer;
    transition: all 0.2s ease;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%239CA3AF' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1rem;
    padding-right: 3rem;
}

.form-element select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(91, 72, 217, 0.1);
    outline: none;
}

.form-element select:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.form-element select option {
    padding: 0.75rem;
    background-color: var(--input-background);
    color: var(--text-color);
}

.form-element select option[value=""] {
    color: var(--text-secondary);
}

@-moz-document url-prefix() {
    .form-element select {
        color: var(--text-color);
        background-color: var(--input-background);
    }
    
    .form-element select option {
        background-color: var(--input-background);
    }
}

.form-element select::-ms-expand {
    display: none;
}

.form-element select:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    color: var(--text-color);
    opacity: 0.9;
}

.checkbox-wrapper:hover {
    opacity: 1;
}

input[type="checkbox"] {
    appearance: none;
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    background: var(--input-background);
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

input[type="checkbox"]:hover {
    border-color: var(--primary-light);
    background: var(--card-background);
}

input[type="checkbox"]:checked {
    background: var(--primary-light);
    border-color: var(--primary-light);
}

input[type="checkbox"]:checked::after {
    content: '';
    position: absolute;
    left: 6px;
    top: 2px;
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.button-container {
    display: grid;
    gap: 0.75rem;
    margin-top: 2rem;
}

button {
    width: 100%;
    padding: 0.875rem;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.install-link button {
    background: var(--primary-color);
    color: white;
}

.install-link button:hover {
    background: var(--primary-light);
    transform: none;
}

.copy-link button {
    background: var(--input-background);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.copy-link button:hover {
    background: var(--card-background);
    border-color: var(--primary-color);
}

.popup {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 1000;
    display: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.popup.success {
    background: var(--success-color);
    color: white;
}

.popup.error {
    background: var(--error-color);
    color: white;
}

a {
    color: var(--primary-light);
    text-decoration: none;
    transition: var(--transition);
}

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

.hint {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin: 0.5rem 0 0;
}

@media (max-width: 480px) {
    #addon {
        padding: 1.5rem;
        width: calc(100% - 2rem);
        margin: 1rem;
    }

    .logo img {
        width: 64px;
        height: 64px;
    }

    h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 0.875rem;
    }

    input[type="text"], select {
        padding: 0.625rem 0.875rem;
        font-size: 0.875rem;
    }

    button {
        padding: 0.75rem;
        font-size: 0.875rem;
    }

    .form-element {
        margin-bottom: 1.25rem;
    }

    .checkbox-wrapper {
        font-size: 0.875rem;
    }
}

@media (max-width: 360px) {
    #addon {
        padding: 1.25rem;
    }

    .logo img {
        width: 56px;
        height: 56px;
    }

    h1 {
        font-size: 1.25rem;
    }

    h2 {
        font-size: 0.8125rem;
    }

    .button-container {
        gap: 0.5rem;
    }
}

@media (min-width: 1200px) {
    #addon {
        width: 480px;
        transform: scale(1.1);
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        --primary-color: #6B5AE8;
        --primary-light: #8C7CF6;
    }
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.install-link button:disabled:hover,
.copy-link button:disabled:hover {
    background: var(--primary-color);
    transform: none;
    border-color: var(--border-color);
}

@media (max-height: 800px) {
    body {
        padding: 1rem 0;
    }

    #addon {
        padding: 1.5rem;
    }

    .logo img {
        width: 60px;
        height: 60px;
    }

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

@media (min-height: 1000px) {
    body {
        padding: 3rem 0;
    }
}