Modern WaniKani by FancyFurret

/* ==UserStyle==
@name         Modern WaniKani
@version      20250409.19.45
@namespace    ?
@description  A sleek redesign for WaniKani's review interface
@license      MIT
==/UserStyle== */

@-moz-document url-prefix("https://www.wanikani.com/subject-lessons"), url("https://www.wanikani.com/subjects/review") {

/* ===== CSS Variables ===== */
:root {
    /* Theme Colors */
    --color-primary: #5643cc;
    --color-primary-light: #7863e0;
    --color-primary-dark: #4432aa;
    --color-secondary: #ff6b6b;
    --color-success: #43cc9a;
    --color-danger: #ff6b6b;
    --color-warning: #ffb347;

    /* Neutral Colors */
    --color-text: #222639;
    --color-text-light: #f8f9fa;
    --color-text-muted: #6c757d;
    --color-text-muted-dark: #343a40;
    --color-text-muted-light: #e9ecef;

    /* Background Colors */
    --color-bg: #f5f7fa;
    --color-bg-card: #ffffff;
    --color-bg-card-hover: #eceef0;
    --color-bg-input: #ffffff;
    --color-bg-header: rgba(255, 255, 255, 0.8);

    /* Border Colors */
    --color-border: #e9ecef;
    --color-border-hover: #5643cc;

    /* Subject Type Colors */
    --color-radical: #00aaff;
    --color-kanji: #ff00aa;
    --color-vocabulary: #aa00ff;

    /* Spacing & Layout */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 100px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
    --shadow-primary: 0 0 15px rgba(86, 67, 204, 0.5);

    /* Transitions */
    --transition: all 0.3s ease;
}

/* Dark Theme Variables */
@media (prefers-color-scheme: dark) {
    :root {
        /* Theme Colors */
        --color-primary: #7863e0;
        --color-primary-light: #9683ff;
        --color-primary-dark: #5643cc;

        /* Neutral Colors */
        --color-text: #f8f9fa;
        --color-text-light: #222639;
        --color-text-muted: #adb5bd;
        --color-text-muted-dark: #ced4da;
        --color-text-muted-light: #343a40;

        /* Background Colors */
        --color-bg: #121320;
        --color-bg-card: #1a1c2c;
        --color-bg-card-hover: #22253a;
        --color-bg-input: #1a1c2c;
        --color-bg-header: rgba(26, 28, 44, 0.8);

        /* Border Colors */
        --color-border: #343a40;
        --color-border-hover: #7863e0;
    }
}

/* ===== Base Styles ===== */
* {
    text-shadow: none !important;
}

body {
    font-family: "SF Pro Display", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
}

.site-content {
    max-width: 100vw;
    overflow-x: hidden;
}

/* ===== Quiz Container ===== */
.quiz {
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg) 100%);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    margin: 0 auto;
}

.quiz__content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    max-width: 1000px;
    margin: auto;
}

/* ===== Quiz Progress ===== */
.quiz-progress {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    z-index: 1000;
    background: var(--color-bg);
}

.quiz-progress__bar {
    background: linear-gradient(90deg, var(--color-primary-light), var(--color-primary));
    height: 100%;
    transition: var(--transition);
    border-radius: 0 3px 3px 0;
    box-shadow: var(--shadow-primary);
}

/* ===== Other ====== */

#turbo-body {
    background: var(--color-bg);
}

.lesson-container {
    margin: 0 auto;
    max-width: 1200px;
}

.subject-slides__navigation {
    border-radius: var(--radius-md);
    background: var(--color-bg-card);
    color: var(--color-text);
}

.subject-slide {
    background-color: var(--color-bg-card);
    border-radius: var(--radius-md);
    margin-left: 0;
    margin-right: 0;
    border: none;
    box-shadow: none;
}

.subject-character__characters, .wk-button {
    box-shadow: none !important;
    border-radius: var(--radius-sm) !important;
}

.subject-slide__navigation-icon:hover {
    background: var(--color-bg-card-hover) !important;
}

.subject-collocations__pattern-name {
    background: none;
    color: var(--color-text) !important;
}

.subject-collocations__pattern-name[aria-selected=true] {
    background: var(--color-bg-card-hover);
    color: var(--color-text) !important;
}

.subject-character-grid__items {
    gap: var(--spacing-sm);
}

.subject-character--grid:after {
    border: none;    
}

.subject-character {
    box-shadow: none !important;
    border: none;
    border-radius: var(--radius-lg);
}

/* ===== Character Header ===== */
.character-header {
    background: var(--color-bg-header);
    border-radius: var(--radius-md);
    padding: 0;
    margin-bottom: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.character-header:hover {
    box-shadow: var(--shadow-lg);
}

.character-header--radical {
    border-top: 5px solid var(--color-radical);
}

.character-header--kanji {
    border-top: 5px solid var(--color-kanji);
}

.character-header--vocabulary {
    border-top: 5px solid var(--color-vocabulary);
}

.character-header__content {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 0;
    padding: var(--spacing-sm);
}

.character-header__menu {
    display: flex;
    justify-content: space-between;
    width: 100%;
    margin-bottom: var(--spacing-sm);
}

.character-header__characters {
    font-size: 5rem;
    font-weight: 700;
    color: var(--color-text);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    margin: 0;
    transition: var(--transition);
}

.character-header__characters:hover {
    transform: scale(1.05);
}

.character-header__meaning {
    font-size: 1.5rem;
    color: var(--color-text-muted);
    margin-top: var(--spacing-xs);
}

.character-header__srs-container {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    display: inline-flex;
    align-items: start;
    justify-content: center;
    top: -0.5rem;
}

.character-header__srs-icon .wk-icon {
    color: var(--color-text-light) !important;
}

.character-header__srs-content {
    border-radius: var(--radius-full);
}

/* ===== Quiz Input ===== */
.quiz-input {
    background: var(--color-bg-input);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    transition: var(--transition);
}

.quiz-input__input-container[correct=false] .quiz-input__input {
    background: rgba(255, 0, 0, 0.17);
}

.quiz-input__input-container[correct=true] .quiz-input__input {
    background: rgba(122, 204, 122, 0.44);
}

.quiz-input__question-type-container {
    display: flex;
    align-items: center;
    justify-content: center;
    border: unset !important;
    padding-bottom: var(--spacing-xs);
    background: var(--color-bg-card) !important;
}

.quiz-input__question-category {
    background: var(--color-primary);
    color: var(--color-text-light);
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    margin-right: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.quiz-input__question-type {
    color: var(--color-text-muted);
    font-weight: 400;
    font-size: 1.2rem;
}

.quiz-input__input-wrapper {
    position: relative;
}

.quiz-input__input-container {
    display: flex;
    align-items: center;
    max-width: 70%;
    margin: auto;
}

.quiz-input__input-container form {
    flex-grow: 1;
    display: flex;
    align-items: center;
    gap: 20px;
}

.quiz-input__input {
    flex: 1;
    border: 1px solid var(--color-border) !important;
    border-radius: var(--radius-sm);
    padding: var(--spacing-xs);
    font-size: 1.2rem;
    transition: var(--transition);
    width: 100%;
    background: var(--color-bg-input);
    color: var(--color-text) !important;
    box-shadow: none;
}

.quiz-input__input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(86, 67, 204, 0.2);
}

.quiz-input__submit-button {
    position: absolute;
    background: var(--color-primary);
    color: var(--color-text-light);
    border: none;
    border-radius: var(--radius-full);
    height: 30px;
    margin: auto;
    right: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.quiz-input__submit-button svg {
    transform: scale(0.6);
}

.quiz-input__submit-button:hover {
    background: var(--color-primary-dark);
    transform: translateX(2px);
}

.quiz-input__submit-button .wk-icon {
    color: var(--color-text-light) !important;
}

/* ===== Answer Exception ===== */
.answer-exception {
    background: var(--color-bg-card);
    color: var(--color-text);
    box-shadow: none;
    border-radius: var(--radius-md);
}

.quiz-input__exception {
    background: var(--color-bg-card-hover);
    color: var(--color-text);
    box-shadow: none;
    border-radius: var(--radius-md);
}

/* ===== Additional Content ===== */
.additional-content {
    margin-top: 0;
    flex: none;
    margin-bottom: 0;
}

.additional-content__menu {
    display: flex;
    flex-wrap: nowrap;
    gap: 10px;
    list-style: none;
    padding: 0;
    width: 50%;
    margin: auto;
}

.additional-content__menu-item {
    flex: 1 0 auto !important;
}

.additional-content__item {
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--color-text-muted-dark);
    font-weight: 500;...