/* Material Design 3 Color System */
:root {
    /* Primary colors */
    --md-sys-color-primary: #6750A4;
    --md-sys-color-on-primary: #FFFFFF;
    --md-sys-color-primary-container: #EADDFF;
    --md-sys-color-on-primary-container: #21005D;

    /* Surface colors */
    --md-sys-color-surface: #FFFBFE;
    --md-sys-color-on-surface: #1C1B1F;
    --md-sys-color-surface-variant: #E7E0EC;
    --md-sys-color-on-surface-variant: #49454F;

    /* Background */
    --md-sys-color-background: #FFFBFE;
    --md-sys-color-on-background: #1C1B1F;

    /* Secondary */
    --md-sys-color-secondary: #625B71;
    --md-sys-color-on-secondary: #FFFFFF;
    --md-sys-color-secondary-container: #E8DEF8;
    --md-sys-color-on-secondary-container: #1D192B;

    /* Tertiary */
    --md-sys-color-tertiary: #7D5260;
    --md-sys-color-on-tertiary: #FFFFFF;
    --md-sys-color-tertiary-container: #FFD8E4;
    --md-sys-color-on-tertiary-container: #31111D;

    /* Error */
    --md-sys-color-error: #B3261E;
    --md-sys-color-on-error: #FFFFFF;
    --md-sys-color-error-container: #F9DEDC;
    --md-sys-color-on-error-container: #410E0B;

    /* Outline */
    --md-sys-color-outline: #79747E;
    --md-sys-color-outline-variant: #CAC4D0;

    /* Success (custom) */
    --md-sys-color-success: #4CAF50;
    --md-sys-color-on-success: #FFFFFF;

    /* Material Design 3 Elevation Shadows */
    --md-sys-elevation-level0: none;
    --md-sys-elevation-level1: 0px 1px 2px rgba(0, 0, 0, 0.3), 0px 1px 3px 1px rgba(0, 0, 0, 0.15);
    --md-sys-elevation-level2: 0px 1px 2px rgba(0, 0, 0, 0.3), 0px 2px 6px 2px rgba(0, 0, 0, 0.15);
    --md-sys-elevation-level3: 0px 1px 3px rgba(0, 0, 0, 0.3), 0px 4px 8px 3px rgba(0, 0, 0, 0.15);
    --md-sys-elevation-level4: 0px 2px 3px rgba(0, 0, 0, 0.3), 0px 6px 10px 4px rgba(0, 0, 0, 0.15);
    --md-sys-elevation-level5: 0px 4px 4px rgba(0, 0, 0, 0.3), 0px 8px 12px 6px rgba(0, 0, 0, 0.15);

    /* Shape (corner radius) */
    --md-sys-shape-corner-none: 0px;
    --md-sys-shape-corner-extra-small: 4px;
    --md-sys-shape-corner-small: 8px;
    --md-sys-shape-corner-medium: 12px;
    --md-sys-shape-corner-large: 16px;
    --md-sys-shape-corner-extra-large: 28px;

    /* Typography scale */
    --md-sys-typescale-display-large-size: 57px;
    --md-sys-typescale-display-large-weight: 400;
    --md-sys-typescale-display-large-line-height: 64px;

    --md-sys-typescale-headline-large-size: 32px;
    --md-sys-typescale-headline-large-weight: 400;
    --md-sys-typescale-headline-large-line-height: 40px;

    --md-sys-typescale-title-large-size: 22px;
    --md-sys-typescale-title-large-weight: 400;
    --md-sys-typescale-title-large-line-height: 28px;

    --md-sys-typescale-body-large-size: 16px;
    --md-sys-typescale-body-large-weight: 400;
    --md-sys-typescale-body-large-line-height: 24px;

    --md-sys-typescale-body-medium-size: 14px;
    --md-sys-typescale-body-medium-weight: 400;
    --md-sys-typescale-body-medium-line-height: 20px;

    --md-sys-typescale-label-large-size: 14px;
    --md-sys-typescale-label-large-weight: 500;
    --md-sys-typescale-label-large-line-height: 20px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--md-sys-color-primary-container);
    min-height: 100vh;
    padding: 24px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--md-sys-color-on-background);
}

/* Language Switcher - Material Design Floating Action Button Style */
.language-switcher {
    position: fixed;
    top: 24px;
    right: 24px;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: var(--md-sys-color-secondary-container);
    color: var(--md-sys-color-on-secondary-container);
    border: none;
    border-radius: var(--md-sys-shape-corner-large);
    font-size: var(--md-sys-typescale-label-large-size);
    font-weight: var(--md-sys-typescale-label-large-weight);
    letter-spacing: 0.1px;
    cursor: pointer;
    box-shadow: var(--md-sys-elevation-level2);
    transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    overflow: hidden;
}

.language-switcher::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--md-sys-color-on-secondary-container);
    opacity: 0;
    transition: opacity 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

.language-switcher:hover {
    box-shadow: var(--md-sys-elevation-level3);
}

.language-switcher:hover::before {
    opacity: 0.08;
}

.language-switcher:active {
    box-shadow: var(--md-sys-elevation-level1);
}

.language-switcher .material-symbols-outlined {
    font-size: 20px;
    position: relative;
    z-index: 1;
}

.language-switcher #currentLang {
    font-weight: 600;
    position: relative;
    z-index: 1;
    min-width: 24px;
    text-align: center;
}

.container {
    background: var(--md-sys-color-surface);
    border-radius: var(--md-sys-shape-corner-extra-large);
    box-shadow: var(--md-sys-elevation-level3);
    max-width: 840px;
    width: 100%;
    padding: 32px;
    transition: box-shadow 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

.container:hover {
    box-shadow: var(--md-sys-elevation-level4);
}

/* Material Design Typography */
h1 {
    font-size: var(--md-sys-typescale-headline-large-size);
    font-weight: var(--md-sys-typescale-headline-large-weight);
    line-height: var(--md-sys-typescale-headline-large-line-height);
    color: var(--md-sys-color-on-surface);
    margin-bottom: 8px;
    letter-spacing: 0;
}

.subtitle {
    font-size: var(--md-sys-typescale-body-medium-size);
    font-weight: var(--md-sys-typescale-body-medium-weight);
    line-height: var(--md-sys-typescale-body-medium-line-height);
    color: var(--md-sys-color-on-surface-variant);
    margin-bottom: 32px;
    letter-spacing: 0.25px;
}

.form-group {
    margin-bottom: 24px;
}

/* Material Design 3 Filled Text Field */
label {
    display: block;
    margin-bottom: 8px;
    color: var(--md-sys-color-on-surface-variant);
    font-size: var(--md-sys-typescale-body-medium-size);
    font-weight: var(--md-sys-typescale-label-large-weight);
    letter-spacing: 0.5px;
}

select {
    width: 100%;
    padding: 16px;
    background: var(--md-sys-color-surface-variant);
    border: none;
    border-bottom: 1px solid var(--md-sys-color-outline);
    border-radius: var(--md-sys-shape-corner-extra-small) var(--md-sys-shape-corner-extra-small) 0 0;
    font-size: var(--md-sys-typescale-body-large-size);
    font-family: 'Roboto', sans-serif;
    color: var(--md-sys-color-on-surface);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

select:hover {
    background: color-mix(in srgb, var(--md-sys-color-on-surface) 8%, var(--md-sys-color-surface-variant));
}

select:focus {
    outline: none;
    border-bottom: 2px solid var(--md-sys-color-primary);
    background: color-mix(in srgb, var(--md-sys-color-primary) 12%, var(--md-sys-color-surface-variant));
}

.button-group {
    display: flex;
    gap: 16px;
    margin-top: 32px;
}

/* Material Design 3 Filled Button */
button {
    position: relative;
    flex: 1;
    padding: 16px 24px;
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    border: none;
    border-radius: var(--md-sys-shape-corner-large);
    font-size: var(--md-sys-typescale-label-large-size);
    font-weight: var(--md-sys-typescale-label-large-weight);
    font-family: 'Roboto', sans-serif;
    letter-spacing: 0.1px;
    cursor: pointer;
    transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--md-sys-elevation-level0);
    overflow: hidden;
}

button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--md-sys-color-on-primary);
    opacity: 0;
    transition: opacity 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

button:hover::before {
    opacity: 0.08;
}

button:focus::before {
    opacity: 0.12;
}

button:active::before {
    opacity: 0.12;
}

button:hover {
    box-shadow: var(--md-sys-elevation-level1);
}

button:active {
    box-shadow: var(--md-sys-elevation-level0);
}

.results {
    margin-top: 32px;
    display: none;
    animation: fadeIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.results.show {
    display: block;
}

/* Material Design 3 Card - Elevated */
.result-section {
    background: var(--md-sys-color-surface);
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--md-sys-shape-corner-medium);
    padding: 24px;
    margin-bottom: 16px;
    box-shadow: var(--md-sys-elevation-level1);
    transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

.result-section:hover {
    box-shadow: var(--md-sys-elevation-level2);
}

.result-section h3 {
    color: var(--md-sys-color-on-surface);
    margin-bottom: 16px;
    font-size: var(--md-sys-typescale-title-large-size);
    font-weight: var(--md-sys-typescale-title-large-weight);
    line-height: var(--md-sys-typescale-title-large-line-height);
    display: flex;
    align-items: center;
    gap: 8px;
}

.result-section h3::before {
    content: '';
    width: 4px;
    height: 24px;
    background: var(--md-sys-color-primary);
    border-radius: var(--md-sys-shape-corner-small);
}

.drag-instruction {
    color: var(--md-sys-color-on-surface-variant);
    font-size: var(--md-sys-typescale-body-small-size);
    font-weight: 500;
    margin-bottom: 8px;
    letter-spacing: 0.1px;
}

/* Material Design 3 Filled Tonal Button (for bookmarklet links) */
.bookmarklet-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--md-sys-color-secondary-container);
    color: var(--md-sys-color-on-secondary-container) !important;
    text-decoration: none;
    border-radius: var(--md-sys-shape-corner-large);
    margin: 8px 8px 8px 0;
    font-weight: var(--md-sys-typescale-label-large-weight);
    font-size: var(--md-sys-typescale-label-large-size);
    letter-spacing: 0.1px;
    transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: move;
    overflow: hidden;
    box-shadow: var(--md-sys-elevation-level0);
}

.bookmarklet-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--md-sys-color-on-secondary-container);
    opacity: 0;
    transition: opacity 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

.bookmarklet-link:hover::before {
    opacity: 0.08;
}

.bookmarklet-link:hover {
    box-shadow: var(--md-sys-elevation-level1);
}

.code-box {
    background: color-mix(in srgb, var(--md-sys-color-on-surface) 95%, transparent);
    color: var(--md-sys-color-surface);
    padding: 16px;
    border-radius: var(--md-sys-shape-corner-medium);
    overflow-x: auto;
    margin-top: 12px;
    font-family: 'Roboto Mono', 'Monaco', 'Menlo', monospace;
    font-size: 13px;
    line-height: 1.6;
    position: relative;
    border: 1px solid var(--md-sys-color-outline-variant);
}

/* Material Design 3 Outlined Button (for copy button) */
.copy-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 8px 12px;
    background: transparent;
    color: var(--md-sys-color-surface);
    border: 1px solid var(--md-sys-color-outline);
    border-radius: var(--md-sys-shape-corner-large);
    font-size: 12px;
    font-weight: var(--md-sys-typescale-label-large-weight);
    letter-spacing: 0.1px;
    cursor: pointer;
    transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: none;
    overflow: hidden;
}

.copy-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--md-sys-color-primary);
    opacity: 0;
    transition: opacity 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

.copy-btn:hover::before {
    opacity: 0.08;
}

.copy-btn:hover {
    background: color-mix(in srgb, var(--md-sys-color-primary) 8%, transparent);
    border-color: var(--md-sys-color-primary);
}

.copy-btn.copied {
    background: var(--md-sys-color-success);
    color: var(--md-sys-color-on-success);
    border-color: var(--md-sys-color-success);
    animation: copySuccess 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.copy-btn.copied::before {
    opacity: 0;
}

/* Material Design Ripple Effect */
.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    transform: scale(0);
    animation: rippleEffect 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

@keyframes rippleEffect {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

@keyframes copySuccess {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }

    100% {
        transform: scale(1);
    }
}


/* Material Design 3 Info Banner */
.instruction {
    background: var(--md-sys-color-tertiary-container);
    border-left: 4px solid var(--md-sys-color-tertiary);
    padding: 16px;
    margin-top: 16px;
    border-radius: var(--md-sys-shape-corner-medium);
    color: var(--md-sys-color-on-tertiary-container);
}

.instruction strong {
    display: block;
    margin-bottom: 8px;
    font-weight: var(--md-sys-typescale-label-large-weight);
    font-size: var(--md-sys-typescale-body-large-size);
}

.instruction p {
    font-size: var(--md-sys-typescale-body-medium-size);
    line-height: var(--md-sys-typescale-body-medium-line-height);
    letter-spacing: 0.25px;
}

/* Advanced Options Section */
.advanced-options {
    background: var(--md-sys-color-surface-variant);
    border-radius: var(--md-sys-shape-corner-medium);
    padding: 20px;
    margin: 24px 0;
    border: 1px solid var(--md-sys-color-outline-variant);
    transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

.advanced-options:hover {
    background: color-mix(in srgb, var(--md-sys-color-primary) 4%, var(--md-sys-color-surface-variant));
}

.advanced-options summary {
    cursor: pointer;
    font-size: var(--md-sys-typescale-title-large-size);
    font-weight: var(--md-sys-typescale-title-large-weight);
    color: var(--md-sys-color-on-surface);
    list-style: none;
    user-select: none;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 0;
    transition: color 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.advanced-options summary::-webkit-details-marker {
    display: none;
}

.advanced-options summary::before {
    content: '▶';
    display: inline-block;
    transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--md-sys-color-primary);
    font-size: 14px;
}

.advanced-options[open] summary::before {
    transform: rotate(90deg);
}

.advanced-options summary:hover {
    color: var(--md-sys-color-primary);
}

.options-container {
    margin-top: 20px;
    display: grid;
    gap: 24px;
}

.option-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.option-label {
    font-size: var(--md-sys-typescale-body-large-size);
    font-weight: var(--md-sys-typescale-label-large-weight);
    color: var(--md-sys-color-on-surface);
    margin-bottom: 0;
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* Material Design 3 Radio Button */
.radio-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--md-sys-color-surface);
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--md-sys-shape-corner-medium);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.radio-option::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--md-sys-color-primary);
    opacity: 0;
    transition: opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.radio-option:hover::before {
    opacity: 0.04;
}

.radio-option:hover {
    border-color: var(--md-sys-color-primary);
}

.radio-option input[type="radio"] {
    appearance: none;
    width: 20px;
    height: 20px;
    border: 2px solid var(--md-sys-color-outline);
    border-radius: 50%;
    cursor: pointer;
    position: relative;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
    margin: 0;
}

.radio-option input[type="radio"]::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--md-sys-color-primary);
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.radio-option input[type="radio"]:checked {
    border-color: var(--md-sys-color-primary);
}

.radio-option input[type="radio"]:checked::before {
    transform: translate(-50%, -50%) scale(1);
}

.radio-option:has(input[type="radio"]:checked) {
    background: var(--md-sys-color-primary-container);
    border-color: var(--md-sys-color-primary);
}

.radio-label {
    font-size: var(--md-sys-typescale-body-large-size);
    color: var(--md-sys-color-on-surface);
    cursor: pointer;
    position: relative;
    z-index: 1;
}

.radio-option:has(input[type="radio"]:checked) .radio-label {
    color: var(--md-sys-color-on-primary-container);
    font-weight: 500;
}

/* Responsive Design */
@media (max-width: 600px) {
    body {
        padding: 16px;
    }

    .container {
        padding: 24px;
    }

    h1 {
        font-size: 28px;
        line-height: 36px;
    }

    .button-group {
        flex-direction: column;
    }
}