/* ============================================================
   DATABASE HUB  /assets/css/pages/database.css
   prefix: db-
   ============================================================ */

:root {
    --db-blue:      #4a9eff;
    --db-blue-line: rgba(74, 158, 255, 0.32);
    --db-blue-bg:   rgba(74, 158, 255, 0.08);
    --db-bg:        #0d0d0f;
    --db-card:      #101014;
    --db-card-hov:  #16161c;
    --db-border:    rgba(255, 255, 255, 0.07);
    --db-text:      #f0ece4;
    --db-text-sub:  rgba(240, 236, 228, 0.55);
    --db-text-dim:  rgba(240, 236, 228, 0.28);
    --db-pad:       clamp(80px, 14vw, 240px);
}

/* ============================================================
   HERO  bg: /assets/img/pages/database/hero-bg.jpg
   ============================================================ */
.db-hero {
    position: relative;
    width: 100%;
    height: 45vh;
    min-height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: #05080f;
}
.db-hero__bg {
    position: absolute;
    inset: 0;
    background-image: url('/assets/img/pages/database/hero-bg.jpg');
    background-size: cover;
    background-position: 60% center;
    background-color: #0a1020;
    opacity: .45;
    filter: blur(1px);
    z-index: 1;
}
.db-hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg,
        rgba(74, 158, 255, .20) 0%,
        rgba(0, 0, 0, .52) 50%,
        rgba(5, 10, 30, .35) 100%);
    z-index: 2;
}
.db-hero__text {
    position: relative;
    z-index: 3;
    text-align: center;
    padding: 0 20px;
}
.db-hero__eyebrow {
    display: block;
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .5em;
    color: var(--db-blue);
    text-transform: uppercase;
    margin-bottom: 12px;
}
.db-hero__title {
    font-size: clamp(2.8rem, 8vw, 5.5rem);
    font-weight: 900;
    font-family: 'Montserrat', sans-serif;
    letter-spacing: .12em;
    color: #fff;
    line-height: 1;
    text-transform: uppercase;
    margin: 0 0 14px;
}
.db-hero__sub {
    font-size: 1rem;
    color: rgba(255, 255, 255, .7);
    letter-spacing: .08em;
    margin: 0;
}
.db-scroll {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 4;
}

/* ============================================================
   DIVIDER
   ============================================================ */
.db-divider {
    display: flex;
    align-items: center;
    gap: 20px;
    height: 52px;
    padding: 0 40px;
    background: var(--db-bg);
    border-top:    1px solid var(--db-border);
    border-bottom: 1px solid var(--db-border);
    width: 100vw;
    margin-left:  calc(-50vw + 50%);
    margin-right: calc(-50vw + 50%);
    box-sizing: border-box;
}
.db-divider__line {
    flex: 1;
    height: 1px;
    background: var(--db-blue-line);
    opacity: .4;
}
.db-divider__label {
    font-size: .65rem;
    font-weight: 800;
    letter-spacing: .5em;
    color: var(--db-blue);
    text-transform: uppercase;
    white-space: nowrap;
}

/* ============================================================
   SECTION 1 — PRIMARY CARDS (3列)
   ============================================================ */
.db-primary {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    width: 100vw;
    margin-left:  calc(-50vw + 50%);
    margin-right: calc(-50vw + 50%);
    background: var(--db-bg);
    border-bottom: 1px solid var(--db-border);
    padding-left:  var(--db-pad);
    padding-right: var(--db-pad);
    box-sizing: border-box;
    align-items: stretch;
}
.db-card {
    position: relative;
    display: block;
    padding: 36px 32px;
    text-decoration: none;
    overflow: hidden;
    box-sizing: border-box;
    border-left:   1px solid var(--db-border);
    border-bottom: 1px solid var(--db-border);
    transition: background .3s;
}
.db-card:last-child { border-right: 1px solid var(--db-border); }
.db-card__bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-color: #0a1020;
    opacity: .14;
    transition: opacity .5s, transform .6s;
    z-index: 0;
}
.db-card--frame   .db-card__bg { background-image: url('/assets/img/pages/database/frame-data-bg.jpg'); }
.db-card--combos  .db-card__bg { background-image: url('/assets/img/pages/database/combos-bg.jpg'); }
.db-card--counter .db-card__bg { background-image: url('/assets/img/pages/database/counter-bg.jpg'); }
.db-card:hover .db-card__bg { opacity: .28; transform: scale(1.04); }
.db-card__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(10,12,18,.5) 0%, rgba(10,12,18,.92) 100%);
    z-index: 1;
}
.db-card__body {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    height: 100%;
}
.db-card__meta {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}
.db-card__num {
    font-size: .6rem;
    font-weight: 800;
    letter-spacing: .4em;
    color: var(--db-blue);
}
.db-card__tag {
    font-size: .6rem;
    font-weight: 800;
    letter-spacing: .3em;
    color: var(--db-blue);
    border: 1px solid var(--db-blue-line);
    background: var(--db-blue-bg);
    padding: 3px 10px;
    text-transform: uppercase;
}
.db-card__title {
    font-size: clamp(1.25rem, 1.8vw, 1.6rem);
    font-weight: 900;
    color: var(--db-text);
    margin: 0 0 10px;
    line-height: 1.2;
    position: relative;
    padding-bottom: 12px;
}
.db-card__title::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 24px; height: 2px;
    background: var(--db-blue);
    transition: width .4s cubic-bezier(.165,.84,.44,1);
}
.db-card:hover .db-card__title::after { width: 52px; }
.db-card__desc {
    font-size: .82rem;
    color: var(--db-text-sub);
    line-height: 1.75;
    margin: 0 0 auto;
    padding-bottom: 20px;
}
.db-card__cta {
    display: inline-block;
    font-size: .68rem;
    font-weight: 700;
    letter-spacing: .2em;
    color: var(--db-blue);
    text-transform: uppercase;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--db-blue-line);
    transition: color .2s, border-color .2s;
    align-self: flex-start;
}
.db-card:hover .db-card__cta { color: #fff; border-color: rgba(255,255,255,.3); }

/* ============================================================
   SECTION 2 — CHARACTER QUICK ACCESS
   ============================================================ */
.db-chara {
    background: var(--db-bg);
    border-bottom: 1px solid var(--db-border);
    width: 100vw;
    margin-left:  calc(-50vw + 50%);
    margin-right: calc(-50vw + 50%);
    padding: 48px 0 56px;
    box-sizing: border-box;
}
.db-chara__inner {
    padding-left:  var(--db-pad);
    padding-right: var(--db-pad);
    box-sizing: border-box;
}
.db-chara__lead {
    font-size: .82rem;
    color: var(--db-text-dim);
    letter-spacing: .08em;
    margin: 0 0 24px;
}
.db-chara__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(72px, 1fr));
    gap: 6px;
}

/* キャラアイテム（buttonタグ） */
.db-chara__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    padding: 8px 4px;
    border: 1px solid var(--db-border);
    background: var(--db-card);
    cursor: pointer;
    transition: background .25s, border-color .25s;
    position: relative;
    overflow: hidden;
}
.db-chara__item:hover {
    background: var(--db-card-hov);
    border-color: var(--db-blue-line);
}
.db-chara__item::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 0; height: 2px;
    background: var(--db-blue);
    transition: width .3s;
}
.db-chara__item:hover::after { width: 100%; }

.db-chara__img {
    width: 52px;
    height: 52px;
    overflow: hidden;
    background: #1a1a22;
    flex-shrink: 0;
}
.db-chara__img img {
    width: 100%; height: 100%;
    object-fit: cover;
    object-position: top center;
    opacity: .88;
    display: block;
    transition: opacity .3s, transform .4s;
}
.db-chara__item:hover .db-chara__img img { opacity: 1; transform: scale(1.08); }

.db-chara__name {
    font-size: .55rem;
    font-weight: 700;
    letter-spacing: .02em;
    color: var(--db-text-dim);
    text-align: center;
    line-height: 1.3;
    transition: color .25s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}
.db-chara__item:hover .db-chara__name { color: var(--db-blue); }

.db-chara__loading,
.db-chara__err {
    color: var(--db-text-dim);
    font-size: .8rem;
    letter-spacing: .1em;
    padding: 20px 0;
    grid-column: 1 / -1;
    text-align: center;
}

/* ============================================================
   CHARACTER SELECT MODAL
   ============================================================ */
.db-modal {
    position: fixed;
    inset: 0;
    z-index: 9000;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    opacity: 0;
    transition: opacity .25s ease;
}
.db-modal.is-open {
    pointer-events: auto;
    opacity: 1;
}

/* 背景幕 */
.db-modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, .72);
    backdrop-filter: blur(4px);
}

/* パネル本体 */
.db-modal__panel {
    position: relative;
    z-index: 1;
    background: #13131a;
    border: 1px solid var(--db-border);
    width: min(480px, calc(100vw - 40px));
    /* 開閉アニメーション */
    transform: translateY(16px) scale(.97);
    transition: transform .25s ease;
    box-shadow: 0 24px 64px rgba(0, 0, 0, .6);
}
.db-modal.is-open .db-modal__panel {
    transform: translateY(0) scale(1);
}

/* 閉じるボタン */
.db-modal__close {
    position: absolute;
    top: 14px; right: 16px;
    width: 28px; height: 28px;
    background: none;
    border: 1px solid var(--db-border);
    color: var(--db-text-dim);
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color .2s, border-color .2s;
    z-index: 2;
}
.db-modal__close:hover { color: var(--db-text); border-color: rgba(255,255,255,.3); }

/* ヘッダー（サムネ＋名前） */
.db-modal__head {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    border-bottom: 1px solid var(--db-border);
}
.db-modal__thumb {
    width: 56px;
    height: 56px;
    overflow: hidden;
    background: #1a1a22;
    border: 1px solid var(--db-border);
    flex-shrink: 0;
}
.db-modal__thumb img {
    width: 100%; height: 100%;
    object-fit: cover;
    object-position: top center;
    display: block;
}
.db-modal__info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.db-modal__label {
    font-size: .58rem;
    font-weight: 700;
    letter-spacing: .4em;
    color: var(--db-blue);
    text-transform: uppercase;
}
.db-modal__name {
    font-size: 1.1rem;
    font-weight: 900;
    color: var(--db-text);
    margin: 0;
    letter-spacing: .05em;
    text-transform: uppercase;
}

/* 3択リンク */
.db-modal__links {
    display: flex;
    flex-direction: column;
    gap: 1px;
    background: var(--db-border);
    padding: 1px;
}
.db-modal__btn {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 18px 24px;
    text-decoration: none;
    background: #13131a;
    position: relative;
    overflow: hidden;
    transition: background .2s;
}
.db-modal__btn:hover { background: var(--db-card-hov); }

/* 左アクセントライン */
.db-modal__btn::before {
    content: '';
    position: absolute;
    left: 0; top: 0;
    width: 3px; height: 0;
    transition: height .3s;
    z-index: 1;
}
.db-modal__btn--frame::before   { background: var(--db-blue); }
.db-modal__btn--combos::before  { background: #f0a500; }
.db-modal__btn--counter::before { background: #e05a5a; }
.db-modal__btn:hover::before    { height: 100%; }

/* アイコン */
.db-modal__btn-icon {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    opacity: .5;
    transition: opacity .2s;
}
.db-modal__btn--frame   .db-modal__btn-icon { color: var(--db-blue); }
.db-modal__btn--combos  .db-modal__btn-icon { color: #f0a500; }
.db-modal__btn--counter .db-modal__btn-icon { color: #e05a5a; }
.db-modal__btn:hover .db-modal__btn-icon { opacity: 1; }

/* テキスト */
.db-modal__btn-text {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.db-modal__btn-en {
    font-size: .6rem;
    font-weight: 800;
    letter-spacing: .3em;
    text-transform: uppercase;
    opacity: .5;
    transition: opacity .2s;
}
.db-modal__btn--frame   .db-modal__btn-en { color: var(--db-blue); }
.db-modal__btn--combos  .db-modal__btn-en { color: #f0a500; }
.db-modal__btn--counter .db-modal__btn-en { color: #e05a5a; }
.db-modal__btn:hover .db-modal__btn-en { opacity: 1; }

.db-modal__btn-jp {
    font-size: .9rem;
    font-weight: 700;
    color: var(--db-text);
    letter-spacing: .03em;
}

/* 矢印 */
.db-modal__btn-arrow {
    font-size: .9rem;
    color: var(--db-text-dim);
    flex-shrink: 0;
    transition: color .2s, transform .2s;
}
.db-modal__btn:hover .db-modal__btn-arrow {
    color: var(--db-text);
    transform: translateX(4px);
}

/* ============================================================
   SECTION 3 — HOW TO USE
   ============================================================ */
.db-guide {
    background: var(--db-bg);
    border-bottom: 1px solid var(--db-border);
    width: 100vw;
    margin-left:  calc(-50vw + 50%);
    margin-right: calc(-50vw + 50%);
    padding: 56px 0 64px;
    box-sizing: border-box;
}
.db-guide__inner {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--db-border);
    padding-left:  var(--db-pad);
    padding-right: var(--db-pad);
    box-sizing: border-box;
}
.db-guide__card {
    display: flex;
    flex-direction: row;
    align-items: stretch;
    gap: 18px;
    padding: 32px 28px;
    background: var(--db-card);
    position: relative;
    overflow: hidden;
    box-sizing: border-box;
}
.db-guide__card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 3px; height: 0;
    background: var(--db-blue);
    transition: height .4s;
    z-index: 1;
}
.db-guide__card:hover::before { height: 100%; }
.db-guide__card:hover { background: var(--db-card-hov); }
.db-guide__icon {
    width: 32px; height: 32px;
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--db-blue);
    opacity: .6;
    transition: opacity .3s;
}
.db-guide__card:hover .db-guide__icon { opacity: 1; }
.db-guide__body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}
.db-guide__en {
    font-size: .58rem;
    font-weight: 800;
    letter-spacing: .4em;
    color: var(--db-blue);
    margin-bottom: 5px;
}
.db-guide__title {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--db-text);
    margin: 0 0 6px;
    line-height: 1.3;
}
.db-guide__desc {
    font-size: .78rem;
    color: var(--db-text-sub);
    line-height: 1.65;
    margin: 0 0 14px;
}
.db-guide__link {
    display: inline-block;
    font-size: .62rem;
    font-weight: 700;
    letter-spacing: .2em;
    color: var(--db-blue);
    text-decoration: none;
    text-transform: uppercase;
    padding-bottom: 3px;
    border-bottom: 1px solid var(--db-blue-line);
    align-self: flex-start;
    margin-top: auto;
    transition: color .25s, border-color .25s;
}
.db-guide__link:hover { color: #fff; border-color: rgba(255,255,255,.3); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .db-primary {
        grid-template-columns: 1fr 1fr;
        padding-left: 40px; padding-right: 40px;
    }
    .db-card:nth-child(3) { grid-column: 1 / -1; border-right: 1px solid var(--db-border); }
    .db-guide__inner { grid-template-columns: 1fr 1fr; padding-left: 40px; padding-right: 40px; }
}

@media (max-width: 768px) {
    .db-hero { height: 38vh; min-height: 260px; }
    .db-primary { grid-template-columns: 1fr; padding-left: 20px; padding-right: 20px; }
    .db-card:nth-child(3) { grid-column: auto; border-right: 1px solid var(--db-border); }
    .db-chara__inner { padding-left: 20px; padding-right: 20px; }
    .db-guide__inner { grid-template-columns: 1fr; padding-left: 20px; padding-right: 20px; }
    .db-divider { padding: 0 20px; }
    .db-modal__panel { width: calc(100vw - 24px); }
}