/* ============================================================
   BACKPACK — hőstöredék-inventory (popup: js/ui/backpackUI.js,
   kártya-rács: js/ui/backpackGridUI.js — közös a User Profile oldal
   Backpack tabjával is)
   ============================================================ */

.backpack-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: var(--z-overlay);
    background: rgba(3, 5, 9, 0.72);
    backdrop-filter: blur(6px);
    align-items: center;
    justify-content: center;
    padding: 24px;
}
.backpack-overlay.active { display: flex; }

.backpack-panel {
    width: min(1400px, 96vw);
    max-height: 88vh;
    display: flex;
    flex-direction: column;
    background: linear-gradient(180deg, var(--c-panel-light) 0%, var(--c-panel) 100%);
    border: 1px solid var(--border-glow-cyan);
    border-radius: var(--radius-m);
    box-shadow: 0 0 40px rgba(76, 212, 255, 0.18), 0 20px 60px rgba(0, 0, 0, 0.6);
    overflow: hidden;
}

.backpack-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 22px;
    background: rgba(76, 212, 255, 0.1);
    border-bottom: 1px solid var(--border-glass);
    flex-shrink: 0;
}
.backpack-title { font-family: 'AOW', serif; font-size: 15px; color: var(--c-cyan); letter-spacing: 0.03em; }
.backpack-close {
    background: transparent;
    border: none;
    color: var(--c-text-dim);
    font-size: 16px;
    cursor: pointer;
    padding: 2px 8px;
    border-radius: var(--radius-s);
    transition: color var(--t-fast);
}
.backpack-close:hover { color: var(--c-text); }

.backpack-body {
    overflow-y: auto;
    flex: 1;
    padding: 18px 22px 22px;
}

.backpack-open-trigger {
    width: 100%;
    padding: 9px;
    background: rgba(76, 212, 255, 0.15);
    border: 1px solid rgba(76, 212, 255, 0.35);
    border-radius: var(--radius-s);
    color: var(--c-cyan);
    font-size: 11.5px;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--t-fast);
}
.backpack-open-trigger:hover { background: rgba(76, 212, 255, 0.28); }

/* ── Backpack al-tab csík (Hőstöredékek / Hőskinézet Töredékek) ── */

.bp-tabs-root { display: flex; flex-direction: column; height: 100%; }

.bp-magic-charm-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    margin-bottom: 10px;
    border-radius: 8px;
    background: linear-gradient(180deg, rgba(150,110,255,0.16), rgba(40,20,70,0.24));
    border: 1px solid rgba(190,150,255,0.5);
    width: fit-content;
    flex-shrink: 0;
}
.bp-magic-charm-icon { width: 22px; height: 22px; object-fit: contain; }
.bp-magic-charm-label { font-size: 13px; color: var(--text-secondary, #cbd5e1); letter-spacing: 0.02em; }
.bp-magic-charm-amount { font-size: 15px; font-weight: 700; color: #d9c4ff; }

.bp-subtabs {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border-glass);
    flex-shrink: 0;
}
.bp-subtab {
    padding: 10px 18px;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--c-text-dim);
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 12.5px;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    cursor: pointer;
    transition: color var(--t-fast), border-color var(--t-fast);
}
.bp-subtab:hover { color: var(--c-text); }
.bp-subtab.active {
    color: var(--c-cyan);
    border-bottom-color: var(--c-cyan);
}

.bp-subtab-panel.hidden { display: none; }

/* ── Header summary (distinct / total / combinable) ──────────── */

.bp-header {
    display: flex;
    gap: 28px;
    padding: 4px 4px 16px;
    border-bottom: 1px solid var(--border-glass);
    margin-bottom: 16px;
}
.bp-header-stat { text-align: left; }
.bp-header-num {
    font-family: 'AOW', serif;
    font-size: 1.9rem;
    color: var(--c-cyan);
    text-shadow: 0 0 12px rgba(76, 212, 255, 0.4);
    line-height: 1;
}
.bp-header-label {
    margin-top: 4px;
    font-size: 0.68rem;
    letter-spacing: 0.06em;
    color: var(--c-text-dim);
    text-transform: uppercase;
}

/* ── Toolbar (filter / tier / sort / search) ──────────────────── */

.bp-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: 16px;
    margin-bottom: 18px;
}
.bp-toolbar-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}
.bp-toolbar-group label {
    font-size: 0.65rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--c-text-dim);
}
.bp-toolbar-group .settings-select { min-width: 150px; }

.bp-search-wrap {
    position: relative;
    flex: 1;
    min-width: 180px;
    max-width: 320px;
    margin-left: auto;
}
.bp-search-wrap input {
    width: 100%;
    box-sizing: border-box;
    padding: 9px 12px 9px 34px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-s);
    color: var(--c-text);
    font-size: 0.85rem;
    transition: border-color var(--t-mid) var(--ease-premium), box-shadow var(--t-mid) var(--ease-premium);
}
.bp-search-wrap input:focus {
    outline: none;
    border-color: var(--c-cyan);
    box-shadow: 0 0 10px rgba(76, 212, 255, 0.35);
}
.bp-search-icon {
    position: absolute;
    left: 10px;
    top: 10px;
    width: 15px;
    height: 15px;
    stroke: var(--c-text-dim);
    fill: none;
    stroke-width: 2;
    pointer-events: none;
}

/* ── Card grid ──────────────────────────────────────────────── */

.bp-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(165px, 1fr));
    gap: 16px;
}

.bp-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 56px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}
.bp-empty-title { font-size: 14px; color: var(--c-text); font-weight: 600; }
.bp-empty-sub { font-size: 12px; color: var(--c-text-dim); }
.bp-empty-cta {
    margin-top: 10px;
    padding: 9px 18px;
    background: rgba(76, 212, 255, 0.15);
    border: 1px solid rgba(76, 212, 255, 0.4);
    border-radius: var(--radius-s);
    color: var(--c-cyan);
    font-size: 11.5px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-decoration: none;
    transition: background var(--t-fast);
}
.bp-empty-cta:hover { background: rgba(76, 212, 255, 0.3); }

.bp-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-m);
    overflow: hidden;
    transition: transform var(--t-fast) var(--ease-premium), border-color var(--t-fast), box-shadow var(--t-fast);
}
.bp-card:hover {
    transform: translateY(-3px);
    border-color: var(--tc, var(--border-glow-cyan));
    box-shadow: 0 10px 26px rgba(0, 0, 0, 0.4);
}

.bp-card-media {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    background: #000;
}
.bp-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    transition: transform var(--t-slow) var(--ease-premium);
}
.bp-card:hover .bp-card-media img { transform: scale(1.06); }
.bp-card-media::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(3, 5, 9, 0.85) 100%);
    pointer-events: none;
}

.bp-card-tier-chip {
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 1;
    padding: 2px 7px;
    border-radius: 999px;
    background: rgba(3, 5, 9, 0.65);
    border: 1px solid var(--tc, var(--c-text-dim));
    color: var(--tc, var(--c-text-dim));
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    backdrop-filter: blur(3px);
}

.bp-card-body {
    padding: 10px 12px 12px;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.bp-card-name {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--c-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.bp-card-tier-label {
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--tc, var(--c-text-dim));
}

.bp-card-track {
    height: 6px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.07);
    overflow: hidden;
    margin-top: 2px;
}
.bp-card-fill {
    height: 100%;
    border-radius: 3px;
    background: var(--tc, var(--c-cyan));
    transition: width var(--t-mid);
}
.bp-card-count { font-size: 0.68rem; color: var(--c-text-dim); }

.bp-card-footer { margin-top: 6px; }

.bp-card-missing {
    font-size: 0.62rem;
    letter-spacing: 0.03em;
    color: var(--c-text-dim);
    opacity: 0.75;
}

.bp-card-combine-btn {
    width: 100%;
    padding: 8px 0;
    background: linear-gradient(135deg, rgba(76, 212, 255, 0.32) 0%, rgba(0, 170, 255, 0.28) 100%);
    border: 1px solid var(--border-glow-cyan);
    border-radius: var(--radius-s);
    color: var(--c-cyan);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    cursor: pointer;
    transition: background var(--t-fast), box-shadow var(--t-fast);
}
.bp-card-combine-btn:hover {
    background: linear-gradient(135deg, rgba(76, 212, 255, 0.5) 0%, rgba(0, 170, 255, 0.42) 100%);
    box-shadow: 0 0 16px rgba(76, 212, 255, 0.4);
}

.bp-card-owned-badge {
    display: inline-block;
    padding: 4px 9px;
    border-radius: 999px;
    background: rgba(109, 247, 193, 0.12);
    border: 1px solid rgba(109, 247, 193, 0.35);
    color: var(--c-buff);
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.03em;
}
.bp-card-extra {
    margin-top: 4px;
    font-size: 0.62rem;
    color: var(--c-text-dim);
}

/* Combine-ready kártya — visszafogott, de jól látható kiemelés (nem
   erős neon minden kártyán, csak ennél az állapotnál). */
.bp-card--ready {
    border-color: var(--tc, var(--border-glow-cyan));
    box-shadow: 0 0 0 1px rgba(76, 212, 255, 0.12), 0 0 18px rgba(76, 212, 255, 0.15);
    animation: bpReadyPulse 2.6s ease-in-out infinite;
}
@keyframes bpReadyPulse {
    0%, 100% { box-shadow: 0 0 0 1px rgba(76, 212, 255, 0.12), 0 0 18px rgba(76, 212, 255, 0.15); }
    50% { box-shadow: 0 0 0 1px rgba(76, 212, 255, 0.22), 0 0 26px rgba(76, 212, 255, 0.3); }
}

.bp-card--owned { opacity: 0.82; }
.bp-card--owned .bp-card-media::after { background: linear-gradient(180deg, transparent 50%, rgba(3, 5, 9, 0.9) 100%); }

/* Már megszerzett hős, de a töredékek újra elérték a küszöböt — Mystic
   Essence-re váltható (nem újabb unlock, ld. bp-card-convert-btn). Arany
   tónus, hogy megkülönböztethető legyen a cyan "ready" (új hős) állapottól. */
.bp-card--convertible {
    opacity: 1;
    border-color: var(--border-glow-gold);
    box-shadow: 0 0 0 1px rgba(255, 210, 76, 0.12), 0 0 18px rgba(255, 210, 76, 0.15);
}
.bp-card--convertible .bp-card-media::after { background: linear-gradient(180deg, transparent 50%, rgba(3, 5, 9, 0.9) 100%); }
.bp-card-owned-badge + .bp-card-convert-btn { margin-top: 6px; }
.bp-card-convert-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 7px 0;
    background: linear-gradient(135deg, rgba(255, 210, 76, 0.28) 0%, rgba(166, 127, 44, 0.32) 100%);
    border: 1px solid var(--border-glow-gold);
    border-radius: var(--radius-s);
    color: var(--c-gold);
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    cursor: pointer;
    transition: background var(--t-fast), box-shadow var(--t-fast);
}
.bp-card-convert-btn img { width: 14px; height: 14px; object-fit: contain; }
.bp-card-convert-btn:hover {
    background: linear-gradient(135deg, rgba(255, 210, 76, 0.45) 0%, rgba(166, 127, 44, 0.48) 100%);
    box-shadow: 0 0 14px rgba(255, 210, 76, 0.35);
}

/* ── Toast (Mystic Essence váltás visszajelzés) ──────────────── */
.bp-toast {
    position: fixed;
    left: 50%;
    bottom: 36px;
    transform: translate(-50%, 12px);
    z-index: 960;
    padding: 11px 20px;
    background: linear-gradient(135deg, var(--c-panel-light) 0%, var(--c-panel) 100%);
    border: 1px solid var(--border-glow-gold);
    border-radius: var(--radius-s);
    color: var(--c-gold);
    font-size: 0.8rem;
    font-weight: 600;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 16px rgba(255, 210, 76, 0.25);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--t-mid) var(--ease-premium), transform var(--t-mid) var(--ease-premium);
}
.bp-toast.visible { opacity: 1; transform: translate(-50%, 0); }

/* ── Assembly animation overlay (particles converge into hero reveal) ── */
.assemble-overlay {
    position: fixed;
    inset: 0;
    z-index: 951;
    background: rgba(0, 0, 0, 0.92);
    display: flex;
    align-items: center;
    justify-content: center;
}
.assemble-overlay.hidden { display: none; }

.assemble-stage {
    position: relative;
    width: 340px;
    height: 460px;
}

.assemble-pieces {
    position: absolute;
    inset: 0;
}

.assemble-piece {
    position: absolute;
    width: 52px;
    height: 52px;
    object-fit: contain;
    filter: drop-shadow(0 0 10px rgba(255, 210, 76, 0.8));
    will-change: transform, opacity, left, top;
}

.assemble-reveal {
    position: absolute;
    inset: 0;
    border-radius: var(--radius-m);
    overflow: hidden;
    opacity: 0;
    transform: scale(0.88);
    transition: opacity 0.5s ease, transform 0.5s ease;
    border: 1px solid var(--border-glow-gold);
    box-shadow: 0 0 50px rgba(255, 210, 76, 0.25);
}
.assemble-reveal.visible { opacity: 1; transform: scale(1); }
.assemble-reveal.hidden { display: none; }

.assemble-banner-img {
    width: 100%; height: 100%;
    object-fit: cover;
    object-position: top center;
    display: block;
}

.assemble-banner-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(4, 1, 12, 0.98) 0%, rgba(4, 1, 12, 0.55) 50%, transparent 100%);
}

.assemble-content {
    position: absolute;
    bottom: 72px;
    left: 20px; right: 20px;
}

.assemble-success-badge {
    font-size: 8px;
    letter-spacing: 3.5px;
    text-transform: uppercase;
    color: var(--c-gold);
    text-shadow: 0 0 12px rgba(255, 180, 40, 0.6);
    margin-bottom: 8px;
}

.assemble-hero-name {
    font-family: 'AOW', serif;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: rgba(248, 235, 200, 0.97);
    text-shadow: 0 2px 30px rgba(0, 0, 0, 1);
    line-height: 1.1;
}

.assemble-hero-tags {
    display: flex;
    gap: 6px;
    margin-top: 8px;
    flex-wrap: wrap;
}
.assemble-tag {
    padding: 3px 10px;
    border-radius: var(--radius-s);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--tc, #9fb3c2);
    background: color-mix(in srgb, var(--tc, #9fb3c2) 18%, transparent);
    border: 1px solid color-mix(in srgb, var(--tc, #9fb3c2) 45%, transparent);
}

.assemble-close-btn {
    position: absolute;
    bottom: 16px;
    left: 16px; right: 16px;
    padding: 10px;
    background: linear-gradient(135deg, rgba(255, 210, 76, 0.35) 0%, rgba(166, 127, 44, 0.5) 100%);
    border: 1px solid var(--border-glow-gold);
    border-radius: var(--radius-s);
    color: var(--c-gold);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1.5px;
    cursor: pointer;
    transition: filter 0.2s;
}
.assemble-close-btn:hover { filter: brightness(1.2); }

@keyframes assembleFlash {
    0%   { background: rgba(0, 0, 0, 0.92); }
    30%  { background: rgba(255, 210, 76, 0.3); }
    100% { background: rgba(0, 0, 0, 0.92); }
}
.assemble-overlay.flash { animation: assembleFlash 0.4s ease; }

@media (max-width: 640px) {
    .bp-grid { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 10px; }
    .bp-search-wrap { max-width: none; margin-left: 0; }
}