/*
 * SPDX-FileCopyrightText: 2026 Brandon Temple Paul
 * SPDX-License-Identifier: GPL-3.0-or-later
 */ 
/* KanaBuddy centralized styles.
   Adjust the theme by editing the variables in :root below. */

:root {
    /* Theme colors */
    --color-primary: #81e4b4;
    --color-secondary: #9060e7;

    /* Derived / supporting colors */
    --color-primary-dark: #4fc98d;
    --color-secondary-dark: #6f42c9;
    --color-bg: #f6f5fb;
    --color-surface: #ffffff;
    --color-text: #241f31;
    --color-text-muted: #6c6786;
    --color-border: #e2def0;

    /* Feedback colors */
    --color-correct: #81e4b4;
    --color-correct-border: #35b57e;
    --color-wrong: #f2a5a5;
    --color-wrong-border: #d94f4f;

    /* Layout */
    --radius: 14px;
    --radius-sm: 8px;
    --shadow: 0 8px 30px rgba(144, 96, 231, 0.12);
    --max-width: 960px;

    /* Kana display font (overridden inline per-quiz font choice) */
    --kana-font: 'Hiragino Kaku Gothic Pro', 'Noto Sans JP', 'Yu Gothic', 'Meiryo', sans-serif;
    --ui-font: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--ui-font);
    background: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
    line-height: 1.5;
}

.page {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 24px 20px 64px;
}

/* Header / branding */
.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 20px;
    background: linear-gradient(120deg, var(--color-secondary), var(--color-primary));
    color: #fff;
}

.site-header .brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: 0.02em;
    text-decoration: none;
    color: #fff;
}

.site-header .brand .logo-slot {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    /* Pixel art: keep the hard edges crisp when scaled. */
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    object-fit: contain;
    display: block;
}

.site-header nav a {
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    opacity: 0.9;
}

.site-header nav a:hover {
    opacity: 1;
}

/* Hero (home page) */
.hero {
    text-align: center;
    padding: 64px 20px 40px;
}

.hero h1 {
    font-size: 2.6rem;
    margin: 0 0 12px;
    background: linear-gradient(120deg, var(--color-secondary), var(--color-primary-dark));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero .hero-logo {
    display: block;
    margin: 0 auto 24px;
    width: 128px;
    height: 128px;
    /* Pixel art: scale without blurring. */
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

.hero p {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    max-width: 560px;
    margin: 0 auto 32px;
}

.hero .kana-sample {
    font-family: var(--kana-font);
    font-size: 3rem;
    letter-spacing: 0.15em;
    color: var(--color-secondary);
    margin-bottom: 32px;
}

/* Buttons */
.btn {
    display: inline-block;
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    padding: 12px 26px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: transform 0.08s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn:active {
    transform: translateY(1px);
}

.btn-primary {
    background: var(--color-secondary);
    color: #fff;
    box-shadow: 0 6px 18px rgba(144, 96, 231, 0.35);
}

.btn-primary:hover {
    background: var(--color-secondary-dark);
}

.btn-accent {
    background: var(--color-primary);
    color: var(--color-text);
    box-shadow: 0 6px 18px rgba(129, 228, 180, 0.4);
}

.btn-accent:hover {
    background: var(--color-primary-dark);
}

.btn-lg {
    font-size: 1.2rem;
    padding: 16px 40px;
}

.btn-ghost {
    background: transparent;
    color: var(--color-secondary);
    border: 2px solid var(--color-secondary);
}

.btn-ghost:hover {
    background: var(--color-secondary);
    color: #fff;
}

/* Cards / panels */
.card {
    background: var(--color-surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 28px;
    margin-bottom: 24px;
}

.card h2 {
    margin-top: 0;
}

/* Setup form */
.setup-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.group-fieldset {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 16px 18px;
    margin: 0;
}

.group-fieldset legend {
    font-weight: 700;
    color: var(--color-secondary);
    padding: 0 8px;
}

.check-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 0;
    cursor: pointer;
}

.check-row input {
    width: 18px;
    height: 18px;
    accent-color: var(--color-secondary);
    cursor: pointer;
}

.font-dropdown {
    position: relative;
    max-width: 100%;
}

.font-dropdown-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 12px 14px;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-align: left;
}

.font-dropdown-toggle:hover,
.font-dropdown.open .font-dropdown-toggle {
    border-color: var(--color-secondary);
}

.font-toggle-label {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.font-toggle-caret {
    flex: 0 0 auto;
    color: var(--color-secondary);
    transition: transform 0.15s ease;
}

.font-dropdown.open .font-toggle-caret {
    transform: rotate(180deg);
}

.font-options {
    display: flex;
    flex-direction: column;
    gap: 4px;
    align-items: stretch;
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    z-index: 20;
    max-height: 340px;
    overflow-y: auto;
    padding: 6px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
}

.font-options[hidden] {
    display: none;
}

/* When there isn't room below, open the panel upward. */
.font-dropdown.drop-up .font-options {
    top: auto;
    bottom: calc(100% + 6px);
}

.font-options label {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    padding: 8px 12px;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    transition: border-color 0.15s ease, background 0.15s ease;
}

.font-options label:hover {
    border-color: var(--color-secondary);
    background: rgba(144, 96, 231, 0.04);
}

.font-options input {
    accent-color: var(--color-secondary);
    flex: 0 0 auto;
}

.font-info {
    display: flex;
    flex-direction: column;
    flex: 0 0 auto;
    min-width: 140px;
}

.font-name {
    font-weight: 600;
    color: var(--color-text);
}

.font-note {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.font-sample {
    flex: 1 1 auto;
    text-align: right;
    font-size: 1.6rem;
    line-height: 1.3;
    color: var(--color-secondary);
    /* Wrap long samples rather than overflow the panel. */
    white-space: normal;
    overflow-wrap: anywhere;
    word-break: break-word;
    min-width: 0;
}

/* On narrow screens, keep the radio + name on one row and wrap the
   kana sample to its own full-width line below so nothing runs off. */
@media (max-width: 480px) {
    .font-options label {
        flex-wrap: wrap;
        align-items: center;
    }

    .font-sample {
        flex: 1 0 100%;
        text-align: left;
        width: 100%;
    }
}

.setup-actions {
    margin-top: 8px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
}

.form-error {
    color: var(--color-wrong-border);
    font-weight: 600;
    margin: 12px 0 0;
    min-height: 1.2em;
}

/* Quiz grid */
.quiz-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
}

.quiz-toolbar-bottom {
    margin-top: 24px;
    margin-bottom: 0;
}

.toolbar-actions {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.quiz-progress {
    font-weight: 600;
    color: var(--color-text-muted);
}

.kana-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 16px;
}

.kana-cell {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 14px 10px;
    text-align: center;
    transition: border-color 0.15s ease, background 0.15s ease;
}

.kana-cell .kana-char {
    font-family: var(--kana-font);
    font-size: 2.4rem;
    line-height: 1.1;
    margin-bottom: 10px;
    user-select: none;
}

.kana-cell .kana-input {
    width: 100%;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 8px;
    font-size: 1rem;
    font-family: var(--ui-font);
    text-align: center;
    outline: none;
}

.kana-cell .kana-input:focus {
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 3px rgba(144, 96, 231, 0.2);
}

.kana-cell.correct {
    background: var(--color-correct);
    border-color: var(--color-correct-border);
}

.kana-cell.correct .kana-input {
    background: rgba(255, 255, 255, 0.6);
    border-color: var(--color-correct-border);
}

.kana-cell.wrong {
    background: var(--color-wrong);
    border-color: var(--color-wrong-border);
}

.kana-cell.wrong .kana-input {
    background: rgba(255, 255, 255, 0.7);
    border-color: var(--color-wrong-border);
}

/* Results modal */
.overlay {
    position: fixed;
    inset: 0;
    background: rgba(36, 31, 49, 0.55);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 50;
}

.overlay.open {
    display: flex;
}

.results-card {
    background: var(--color-surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px 28px;
    max-width: 560px;
    width: 100%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    text-align: center;
}

.results-card h2 {
    margin: 0 0 4px;
    color: var(--color-secondary);
}

.results-stat {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin: 0;
}

.results-detail {
    color: var(--color-text-muted);
    margin: 4px 0 12px;
}

.results-summary {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.summary-chip {
    font-size: 0.9rem;
    font-weight: 600;
    padding: 6px 12px;
    border-radius: 999px;
    border: 1px solid var(--color-border);
    color: var(--color-text);
}

.summary-chip .summary-count {
    font-weight: 700;
}

.summary-correct {
    background: rgba(129, 228, 180, 0.25);
    border-color: var(--color-correct-border);
}

.summary-wrong {
    background: rgba(217, 79, 79, 0.15);
    border-color: var(--color-wrong-border);
}

.summary-missing {
    background: rgba(108, 103, 134, 0.12);
}

.results-breakdown {
    text-align: left;
    margin-bottom: 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    /* Take remaining space and let only the list inside scroll, so the
       action buttons below always stay visible. */
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

.breakdown-head,
.breakdown-row {
    display: grid;
    grid-template-columns: 64px 1fr 1fr;
    gap: 10px;
    align-items: center;
    padding: 10px 14px;
}

.breakdown-head {
    background: var(--color-bg);
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-muted);
    flex: 0 0 auto;
}

.breakdown-list {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
}

.breakdown-row {
    border-top: 1px solid var(--color-border);
    font-size: 0.95rem;
}

.breakdown-row .bd-kana {
    font-family: var(--kana-font);
    font-size: 1.6rem;
    line-height: 1;
}

.breakdown-row .bd-given {
    font-weight: 600;
    overflow-wrap: anywhere;
}

.breakdown-row .bd-correct {
    color: var(--color-text-muted);
    overflow-wrap: anywhere;
}

.breakdown-row .bd-empty {
    color: var(--color-text-muted);
}

/* Correct rows: subtle green; given answer in green. */
.breakdown-row.correct {
    background: rgba(129, 228, 180, 0.15);
}

.breakdown-row.correct .bd-given {
    color: var(--color-correct-border);
}

/* Wrong and missing rows: red highlight, given answer in red. */
.breakdown-row.wrong,
.breakdown-row.missing {
    background: rgba(217, 79, 79, 0.1);
}

.breakdown-row.wrong .bd-given,
.breakdown-row.missing .bd-given {
    color: var(--color-wrong-border);
}

.breakdown-row.wrong .bd-correct,
.breakdown-row.missing .bd-correct {
    color: var(--color-text);
    font-weight: 600;
}

.results-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    flex: 0 0 auto;
}

.hidden {
    display: none !important;
}

@media (max-width: 520px) {
    .hero h1 {
        font-size: 2rem;
    }

    .kana-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }
}

.site-footer {
    text-align: center;
    padding: 20px;
    color: var(--color-text-muted);
    font-size: 0.85rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.site-footer .version-link,
.site-footer .footer-link {
    color: var(--color-text-muted);
    text-decoration: none;
    border-bottom: 1px dotted currentColor;
}

.site-footer .version-link:hover,
.site-footer .footer-link:hover {
    color: var(--color-secondary);
}

.site-footer .footer-sep {
    color: var(--color-border);
}

.site-footer .footer-copyright {
    color: var(--color-text-muted);
}