/* 作品の深掘り質問の練習（/practice）
   公開トップ・お知らせと同じヘッダー／フッター・読みものの枠（style-v2-news-portal.css の .news-page-main）の中に、
   アップロード → 質問の確認 → 練習（時間を測る） → 振り返り の4つの画面を置く。 */

/* hidden 属性で隠す部品（チップ・ボタンなど display を指定しているもの）も、確実に隠す */
body.practice-page [hidden] {
    display: none !important;
}

body.practice-page .news-page-back,
.practice-head,
.practice-steps,
.practice-panel {
    max-width: 760px;
    margin-left: auto;
    margin-right: auto;
}

.practice-head {
    margin-bottom: 20px;
}

.practice-kicker {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 10px;
    margin: 0 0 10px;
    font-size: 12.5px;
    color: var(--v2-muted);
}

.practice-chip {
    display: inline-block;
    padding: 2px 10px;
    border: 1px solid var(--v2-line);
    border-radius: 999px;
    background: var(--v2-surface);
    color: var(--v2-ink);
    font-size: 11.5px;
    font-weight: 700;
}

.practice-title {
    margin: 0 0 12px;
    font-family: "Zen Kaku Gothic New", "Noto Sans JP", sans-serif;
    font-size: clamp(22px, 3vw, 30px);
    font-weight: 900;
    line-height: 1.45;
    color: var(--v2-ink);
    text-wrap: balance;
}

.practice-lead {
    margin: 0;
    font-size: 15px;
    line-height: 1.9;
    color: var(--v2-ink);
}

/* 流れ（1〜4） */
.practice-steps {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 6px;
    margin-bottom: 22px;
    padding: 0;
    list-style: none;
    counter-reset: none;
}

.practice-steps li {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    border-radius: var(--v2-r-md);
    background: var(--v2-panel);
    color: var(--v2-muted);
    font-size: 13px;
    font-weight: 700;
}

.practice-steps li span {
    display: inline-grid;
    place-items: center;
    flex: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--v2-surface);
    font-size: 12px;
}

.practice-steps li[aria-current="step"] {
    background: var(--v2-ink);
    color: var(--v2-surface);
}

.practice-steps li[aria-current="step"] span {
    color: var(--v2-ink);
}

/* 画面ごとの枠 */
.practice-panel {
    padding: 22px 24px;
    border: 1px solid var(--v2-line);
    border-radius: var(--v2-r-lg);
    background: var(--v2-surface);
    color: var(--v2-ink);
    scroll-margin-top: 90px;
}

.practice-panel h2 {
    margin: 0 0 12px;
    font-family: "Zen Kaku Gothic New", "Noto Sans JP", sans-serif;
    font-size: 19px;
    font-weight: 900;
    line-height: 1.5;
    outline: none;
}

.practice-sub {
    margin: 0 0 16px;
    font-size: 14px;
    line-height: 1.85;
    color: var(--v2-muted);
}

/* 1. アップロード */
.practice-form {
    display: grid;
    gap: 12px;
}

.practice-drop {
    display: grid;
    gap: 4px;
    place-items: center;
    padding: 30px 16px;
    border: 2px dashed var(--v2-line);
    border-radius: var(--v2-r-lg);
    background: var(--v2-panel);
    text-align: center;
    cursor: pointer;
    transition: border-color 0.15s ease, background-color 0.15s ease;
}

.practice-drop:hover,
.practice-drop.is-over,
.practice-drop:focus-within {
    border-color: var(--v2-ink);
}

.practice-drop input {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
}

.practice-drop-main {
    font-size: 15px;
    font-weight: 700;
}

.practice-drop-sub {
    font-size: 12.5px;
    color: var(--v2-muted);
    overflow-wrap: anywhere;
}

.practice-primary {
    justify-self: start;
    border: none;
    cursor: pointer;
}

.practice-primary:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.practice-secondary {
    display: inline-flex;
    align-items: center;
    padding: 10px 16px;
    border: 1px solid var(--v2-ink);
    border-radius: var(--v2-r-md);
    background: var(--v2-surface);
    color: var(--v2-ink);
    font: inherit;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
}

.practice-secondary:hover {
    background: var(--v2-panel);
}

.practice-secondary:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.practice-status {
    min-height: 1.6em;
    margin: 0;
    font-size: 13.5px;
    color: var(--v2-muted);
}

.practice-status.is-error {
    color: var(--v2-negative);
    font-weight: 700;
}

.practice-status.is-busy::before {
    content: "";
    display: inline-block;
    width: 12px;
    height: 12px;
    margin-right: 8px;
    border: 2px solid var(--v2-line);
    border-top-color: var(--v2-ink);
    border-radius: 50%;
    vertical-align: -1px;
    animation: practice-spin 0.8s linear infinite;
}

@keyframes practice-spin {
    to { transform: rotate(360deg); }
}

.practice-notes {
    margin: 16px 0 0;
    padding-left: 1.2em;
    font-size: 13px;
    line-height: 1.85;
    color: var(--v2-muted);
}

.practice-notes b {
    color: var(--v2-ink);
}

/* 2. 質問の確認 */
.practice-works {
    display: grid;
    gap: 8px;
    margin: 0 0 18px;
    padding: 0;
    list-style: none;
}

.practice-work {
    padding: 12px 14px;
    border: 1px solid var(--v2-line);
    border-radius: var(--v2-r-md);
}

.practice-work-head {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 4px 12px;
    margin: 0 0 6px;
}

.practice-work-head b {
    font-size: 15px;
}

.practice-work-head span {
    font-size: 12px;
    color: var(--v2-muted);
}

.practice-facets {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.practice-facets li {
    padding: 1px 9px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
}

.practice-facets .is-found {
    background: var(--v2-positive-soft);
    color: var(--v2-positive);
}

.practice-facets .is-missing {
    background: var(--v2-negative-soft);
    color: var(--v2-negative);
}

.practice-settings {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin: 0 0 14px;
}

.practice-settings fieldset {
    margin: 0;
    padding: 12px 14px;
    border: 1px solid var(--v2-line);
    border-radius: var(--v2-r-md);
}

.practice-settings legend {
    padding: 0 4px;
    font-size: 13px;
    font-weight: 700;
}

.practice-settings label {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin: 4px 12px 0 0;
    font-size: 14px;
}

.practice-all {
    margin: 0 0 18px;
    font-size: 14px;
}

.practice-all summary {
    cursor: pointer;
    font-weight: 700;
}

.practice-all ol {
    margin: 10px 0 0;
    padding-left: 1.5em;
    line-height: 1.85;
}

.practice-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

/* 3. 練習 */
.practice-run-head {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}

.practice-progress {
    margin: 0;
    font-size: 13px;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

.practice-progress-bar,
.practice-timer-bar {
    flex: 1;
    height: 6px;
    border-radius: 3px;
    background: var(--v2-panel);
    overflow: hidden;
}

.practice-progress-bar i,
.practice-timer-bar i {
    display: block;
    height: 100%;
    background: var(--v2-ink);
    transition: width 0.2s linear;
}

.practice-q-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin: 0 0 10px;
}

.practice-chip.is-topic {
    border-color: var(--v2-ink);
}

.practice-panel .practice-q-text {
    margin: 0 0 10px;
    font-size: clamp(18px, 2.4vw, 22px);
    line-height: 1.6;
}

.practice-q-note {
    margin: 0 0 14px;
    padding: 8px 12px;
    border-radius: var(--v2-r-md);
    background: var(--v2-negative-soft);
    color: var(--v2-negative);
    font-size: 13px;
    font-weight: 700;
}

.practice-timer {
    display: grid;
    gap: 8px;
    margin: 0 0 16px;
    padding: 16px;
    border-radius: var(--v2-r-lg);
    background: var(--v2-panel);
}

.practice-timer-num {
    margin: 0;
    font-size: 40px;
    font-weight: 900;
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.practice-timer.is-running .practice-timer-bar i {
    background: var(--v2-accent);
}

.practice-timer.is-over .practice-timer-num {
    color: var(--v2-negative);
}

.practice-timer-status {
    margin: 0;
    font-size: 13.5px;
    color: var(--v2-muted);
}

.practice-memo-label {
    display: block;
    margin: 0 0 6px;
    font-size: 12.5px;
    font-weight: 700;
    color: var(--v2-muted);
}

.practice-memo {
    box-sizing: border-box;
    width: 100%;
    margin: 0 0 14px;
    padding: 10px 12px;
    border: 1px solid var(--v2-line);
    border-radius: var(--v2-r-md);
    font: inherit;
    font-size: 14px;
    line-height: 1.7;
    resize: vertical;
}

.practice-points {
    margin: 0 0 16px;
    padding: 14px 16px;
    border: 2px solid var(--v2-positive);
    border-radius: var(--v2-r-lg);
}

.practice-points-why {
    display: grid;
    gap: 2px;
    margin: 0 0 10px;
    font-size: 14px;
}

.practice-points-why b,
.practice-points-title {
    font-size: 12.5px;
    font-weight: 700;
    color: var(--v2-positive);
}

.practice-points-title {
    margin: 0 0 6px;
}

.practice-points ul {
    display: grid;
    gap: 6px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.practice-points label {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 14.5px;
    line-height: 1.7;
    cursor: pointer;
}

.practice-points input {
    flex: none;
    width: 18px;
    height: 18px;
    margin-top: 3px;
    accent-color: var(--v2-positive);
}

/* 4. 振り返り */
.practice-result {
    display: grid;
    gap: 8px;
    margin: 0 0 18px;
    padding: 0;
    list-style: none;
}

.practice-result li {
    padding: 10px 14px;
    border-left: 3px solid var(--v2-warn);
    border-radius: 0 var(--v2-r-md) var(--v2-r-md) 0;
    background: var(--v2-panel);
}

.practice-result li.is-complete {
    border-left-color: var(--v2-positive);
}

.practice-result-head {
    display: grid;
    grid-template-columns: 3.4em minmax(0, 1fr);
    gap: 10px;
    margin: 0;
    font-size: 14px;
    line-height: 1.7;
}

.practice-result-score {
    font-weight: 900;
    font-variant-numeric: tabular-nums;
}

.practice-result-memo {
    margin: 4px 0 0 calc(3.4em + 10px);
    font-size: 13px;
    color: var(--v2-muted);
    white-space: pre-wrap;
}

.practice-next {
    margin-top: 22px;
    padding-top: 16px;
    border-top: 1px solid var(--v2-line);
}

.practice-next h3 {
    margin: 0 0 8px;
    font-size: 15px;
}

.practice-next ul {
    margin: 0;
    padding-left: 1.2em;
    font-size: 14px;
    line-height: 1.9;
}

.practice-next a {
    color: var(--v2-ink);
    text-underline-offset: 3px;
}

@media (max-width: 600px) {
    .practice-panel {
        padding: 18px 16px;
    }

    .practice-steps li {
        flex-direction: column;
        gap: 2px;
        padding: 6px 4px;
        font-size: 11px;
        text-align: center;
    }

    .practice-settings {
        grid-template-columns: minmax(0, 1fr);
    }
}

@media print {
    .practice-steps,
    .practice-actions,
    .practice-next,
    .news-page-back {
        display: none !important;
    }
}

@media (prefers-reduced-motion: reduce) {
    .practice-status.is-busy::before {
        animation: none;
    }
}