/* © 2026 PassQuest Team (https://passquest.jp). All rights reserved. 無断複製・転載・改変を禁じます。 */
/* =============================================
   Magic Scroll Flashcard System CSS
   ============================================= */

:root {
    --card-width: min(300px, 88vw);
    --card-height: min(320px, 50vh);
    --magic-gold: var(--sp-gold-pure);
    --magic-silver: var(--sp-silver);
    --paper-dark: #2d1b10;
    --paper-light: #f4e4bc;
}

#flashcard-screen {
    /* .app-overlay の暗い背景を完全に上書き */
    background: radial-gradient(circle at center, rgba(30, 10, 50, 0.97), rgba(10, 5, 20, 0.99)) !important;
    background-color: #0a0514 !important;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    overflow-y: auto !important;
    padding: 20px 15px 40px 15px !important;
    z-index: 30000 !important;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
}

.flashcard-header {
    width: 100%;
    max-width: 500px;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    /* absolute → relative に変更。上部に固定配置ではなく通常フローに乗せる */
    position: relative;
    top: auto;
    margin-bottom: 10px;
    flex-shrink: 0;
}

.flashcard-stats {
    background: rgba(0, 0, 0, 0.6);
    padding: 8px 15px;
    border-radius: 20px;
    border: 1px solid var(--magic-gold);
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 0 10px rgba(212, 175, 55, 0.3);
}

.stat-label {
    font-size: 0.7rem;
    color: var(--magic-silver);
    font-weight: bold;
}

.stat-value {
    font-family: var(--font-pixel);
    font-size: 1.2rem;
    color: var(--magic-gold);
}

/* Badge Display Location */
.flashcard-badge-slot {
    width: 60px;
    height: 60px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    border: 3px solid var(--magic-gold);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    position: absolute;
    top: -25px;
    right: -25px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.8), inset 0 0 10px var(--magic-gold);
    z-index: 100;
    animation: badgeFloat 3s ease-in-out infinite;
}

@keyframes badgeFloat {

    0%,
    100% {
        transform: translateY(0) rotate(0deg);
    }

    50% {
        transform: translateY(-10px) rotate(5deg);
    }
}

/* --- The Card Container --- */
.flashcard-container {
    width: var(--card-width);
    height: var(--card-height);
    perspective: 1500px;
    position: relative;
    flex-shrink: 0;
    /* カード自体が縮まないようにする */
}

/* --- The Inner Flipper --- */
.flashcard-inner {
    width: 100%;
    height: 100%;
    position: relative;
    transition: transform 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
    transform-style: preserve-3d;
    cursor: pointer;
}

.flashcard-inner.is-flipped {
    transform: rotateY(180deg);
}

/* --- Front & Back Shared Styles --- */
.flashcard-front,
.flashcard-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 20px;
    border: 8px solid #432b1d;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8), inset 0 0 40px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    text-align: center;
    box-sizing: border-box;
    overflow: hidden;
}

.card-ornament {
    position: absolute;
    font-size: 1.5rem;
    color: var(--magic-gold);
    opacity: 0.6;
}

.top-left {
    top: 15px;
    left: 15px;
}

.top-right {
    top: 15px;
    right: 15px;
}

.bottom-left {
    bottom: 15px;
    left: 15px;
}

.bottom-right {
    bottom: 15px;
    right: 15px;
}

.card-hint-text {
    position: absolute;
    bottom: 50px;
    font-size: 0.65rem;
    color: var(--magic-silver);
    letter-spacing: 2px;
    font-weight: bold;
    opacity: 0.5;
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 0.3;
    }

    50% {
        opacity: 0.8;
    }
}

/* Front Side: Magic Book Cover */
.flashcard-front {
    background: linear-gradient(135deg, #1a0f0a, #432b1d);
    color: #fff;
}

.flashcard-front .term-reading {
    font-size: 1.1rem;
    color: var(--magic-gold);
    font-family: var(--font-main);
    margin-bottom: 5px;
    min-height: 1.2em;
}

.flashcard-front .term-jp {
    font-family: var(--font-heading);
    font-weight: 950;
    line-height: 1.2;
    margin-bottom: 25px;
    text-shadow: 0 0 15px rgba(212, 175, 55, 0.4);
}

.flashcard-front .term-foreign {
    font-family: var(--font-main);
    font-size: 1.3rem;
    background: rgba(0, 0, 0, 0.4);
    padding: 10px 20px;
    border-radius: 12px;
    border: 1px solid var(--magic-gold);
    color: var(--magic-silver);
    max-width: 90%;
    word-wrap: break-word;
}

/* Back Side: Ancient Parchment */
.flashcard-back {
    background: #f4e4bc;
    color: #2d1b10;
    transform: rotateY(180deg);
    border-color: #d4a76a;
    background-image: radial-gradient(circle at top left, transparent 96%, rgba(0, 0, 0, 0.1) 100%);
}

.flashcard-back .meaning-text {
    font-family: var(--font-main);
    font-size: 1.25rem;
    line-height: 1.7;
    font-weight: 700;
}
/* キャラクターコメントの白色を黒に上書き（羊皮紙背景用） */
.flashcard-back .meaning-text span {
    color: #333 !important;
}
.flashcard-back .meaning-text span rt {
    color: #555 !important;
}

.flashcard-back .card-hint-text {
    color: #8b4513;
}

/* --- Controls --- */
.flashcard-controls {
    margin-top: 20px;
    display: flex;
    gap: 40px;
    flex-shrink: 0;
    padding-bottom: 20px;
}

.card-action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: none;
    border: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.card-action-btn:hover {
    transform: translateY(-10px);
}

.btn-orb {
    width: 65px;
    height: 65px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid var(--magic-silver);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
    transition: all 0.3s;
}

.btn-orb.highlight {
    background: radial-gradient(circle, var(--magic-gold), #b8860b);
    border-color: #fff;
    color: #000;
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.6);
}

.btn-label {
    font-family: var(--font-pixel);
    font-size: 0.8rem;
    color: var(--magic-silver);
    letter-spacing: 1px;
}

.btn-got-it .btn-label {
    color: var(--magic-gold);
}

/* Custom Ruby on Parchment */
.flashcard-back rt {
    color: #b22222 !important;
    font-weight: 900;
}