:root {
    --bg-top: #10253a;
    --bg-bottom: #050b12;
    --panel: rgba(9, 22, 34, 0.86);
    --panel-strong: rgba(12, 29, 45, 0.94);
    --line: rgba(255, 255, 255, 0.1);
    --text: #eef6ff;
    --muted: #9cb4ca;
    --accent: #78f5c1;
    --accent-strong: #2bb0ff;
    --danger: #ff6a76;
    --warning: #ffd36b;
    --gold: #ffd977;
    --shadow: 0 22px 44px rgba(0, 0, 0, 0.35);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--text);
    font-family: "Segoe UI", Tahoma, sans-serif;
    background:
        radial-gradient(circle at top left, rgba(63, 132, 198, 0.26), transparent 34%),
        radial-gradient(circle at top right, rgba(120, 245, 193, 0.16), transparent 28%),
        linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
}

.game-container {
    width: min(1220px, calc(100% - 24px));
    margin: 0 auto;
    padding: 24px 0 40px;
}

.page-header,
.panel-head,
.status-row,
#scoreboard,
.collection-summary,
.action-group,
.level-row,
.objective-head {
    display: flex;
    align-items: center;
}

.page-header,
.panel-head,
.status-row,
.collection-summary,
.level-row,
.objective-head {
    justify-content: space-between;
}

.page-header {
    gap: 16px;
    margin-bottom: 18px;
}

.eyebrow,
.small-label {
    margin: 0;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-size: 0.72rem;
    color: var(--muted);
}

.page-header h1,
.panel h2,
.hand-header h2,
.game-info h3 {
    margin: 0;
}

.page-header h1 {
    font-size: clamp(2rem, 4vw, 3.2rem);
}

.subtitle,
.hand-header p,
.game-info p,
.panel-note,
.result-text {
    margin: 0;
    color: var(--muted);
}

.subtitle {
    margin-top: 8px;
    max-width: 700px;
}

.header-badge {
    min-width: 180px;
    padding: 14px 18px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.04);
    box-shadow: var(--shadow);
}

.duelo-layout {
    display: grid;
    gap: 18px;
}

.panel {
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02));
    box-shadow: var(--shadow);
    backdrop-filter: blur(12px);
}

.battlefield-panel {
    background:
        radial-gradient(circle at center top, rgba(120, 245, 193, 0.07), transparent 42%),
        linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
}

.status-row {
    gap: 14px;
    flex-direction: column;
    align-items: stretch;
}

.status-card {
    width: 100%;
    padding: 14px 16px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: var(--panel);
}

.level-row {
    gap: 12px;
    margin: 10px 0 12px;
    font-size: 1.2rem;
}

.xp-bar {
    height: 12px;
    border-radius: 999px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.08);
}

#xpFill {
    width: 0;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--accent), var(--accent-strong));
    transition: width 0.35s ease;
}

#scoreboard {
    gap: 12px;
    justify-content: space-between;
}

.score {
    flex: 1;
    text-align: center;
}

.score-value {
    display: block;
    margin-top: 8px;
    font-size: clamp(1.7rem, 5vw, 2.5rem);
}

.vs-center {
    font-size: 1rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.6);
}

.arena {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin: 22px 0;
    align-items: start;
}

.card-slot {
    position: relative;
    width: 100%;
    aspect-ratio: 7 / 10;
    min-height: 0;
    padding: 0;
    border-radius: 22px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: var(--panel-strong);
    overflow: hidden;
    transition: transform 0.25s ease, opacity 0.25s ease, box-shadow 0.25s ease;
}

.player-slot {
    grid-column: 1;
}

.ai-slot {
    grid-column: 2;
}

.slot-placeholder {
    display: grid;
    place-items: center;
    width: 100%;
    height: 100%;
    min-height: 0;
    padding: 18px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.78rem;
    text-align: center;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.85);
}

.arena-center {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    text-align: center;
}

.round-chip,
.deck-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 14px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text);
}

.primary-btn,
.ghost-btn,
.card {
    transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease, opacity 0.18s ease;
}

.primary-btn,
.ghost-btn {
    min-height: 46px;
    padding: 0 18px;
    border-radius: 14px;
    border: 1px solid transparent;
    color: var(--text);
    cursor: pointer;
    font: inherit;
}

.primary-btn {
    background: linear-gradient(135deg, #1cb4ff, #6ce9c0);
    color: #03141f;
    font-weight: 700;
}

.ghost-btn {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.12);
}

.primary-btn:hover,
.ghost-btn:hover,
.card:hover {
    transform: translateY(-2px) scale(1.01);
    box-shadow: 0 14px 26px rgba(0, 0, 0, 0.22);
}

.primary-btn:active,
.ghost-btn:active,
.card:active {
    transform: scale(0.98);
}

.primary-btn:disabled,
.ghost-btn:disabled {
    cursor: not-allowed;
    opacity: 0.5;
    box-shadow: none;
    transform: none;
}

.result-text {
    min-height: 24px;
    font-weight: 600;
}

.result-text.tone-win {
    color: var(--accent);
}

.result-text.tone-loss {
    color: #ff98a2;
}

.result-text.tone-draw {
    color: var(--warning);
}

.hand-header {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 12px;
}

.hand-grid,
.collection-grid,
.ranking-list,
.pack-result {
    display: grid;
    gap: 10px;
}

.hand-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.card {
    appearance: none;
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.04);
    color: var(--text);
    cursor: pointer;
    aspect-ratio: 7 / 10;
    min-height: 0;
    padding: 0;
    text-align: center;
    overflow: hidden;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.card.A,
.card-slot.A {
    background: linear-gradient(160deg, rgba(38, 112, 244, 0.94), rgba(12, 47, 120, 0.98));
}

.card.D,
.card-slot.D {
    background: linear-gradient(160deg, rgba(229, 72, 88, 0.94), rgba(110, 19, 37, 0.98));
}

.card.E,
.card-slot.E {
    background: linear-gradient(160deg, rgba(51, 176, 125, 0.95), rgba(18, 87, 60, 0.98));
}

.card.rare-card,
.card-slot.rare-card {
    border-color: rgba(255, 217, 119, 0.5);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.08),
        0 0 0 1px rgba(255, 217, 119, 0.18);
}

.card.locked {
    cursor: not-allowed;
    opacity: 0.42;
    filter: grayscale(0.35);
}

.card.in-deck,
.card.selected {
    transform: translateY(-4px) scale(1.02);
    border-color: rgba(120, 245, 193, 0.9);
    box-shadow:
        0 0 0 2px rgba(120, 245, 193, 0.25),
        0 18px 30px rgba(0, 0, 0, 0.28);
}

.card-media {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.25);
    z-index: 0;
}

.card-media img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-media::after {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(5, 8, 14, 0.1) 0%, rgba(5, 8, 14, 0.45) 48%, rgba(5, 8, 14, 0.82) 100%),
        radial-gradient(circle at center, rgba(5, 8, 14, 0.06), rgba(5, 8, 14, 0.42));
}

.card-inner {
    position: relative;
    height: 100%;
    min-height: 0;
}

.card-scrim {
    position: absolute;
    inset: 0;
    z-index: 1;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(3, 9, 18, 0.16)),
        radial-gradient(circle at center, rgba(0, 0, 0, 0.05), rgba(0, 0, 0, 0.24));
}

.card-content {
    position: relative;
    z-index: 2;
    height: 100%;
    display: grid;
    grid-template-rows: auto 1fr auto;
    align-items: center;
    justify-items: center;
    gap: 12px;
    padding: 14px 12px 16px;
    text-align: center;
}

.card-badges,
.card-footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
}

.card-main {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
}

.card-tag,
.card-flag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    padding: 4px 8px;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.card-tag {
    background: rgba(3, 10, 18, 0.48);
    border: 1px solid rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(6px);
}

.card-flag {
    background: rgba(3, 10, 18, 0.58);
    border: 1px solid rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(6px);
}

.card-code {
    font-size: clamp(1.35rem, 4.4vw, 1.95rem);
    font-weight: 800;
    line-height: 1;
}

.card-name {
    color: rgba(255, 255, 255, 0.9);
    font-size: clamp(0.82rem, 3vw, 1rem);
    max-width: 88%;
}

.card-value {
    font-size: clamp(2.1rem, 7vw, 3rem);
    font-weight: 800;
    line-height: 1;
}

.card-rarity {
    color: rgba(255, 255, 255, 0.95);
    font-size: 0.84rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.card-goal {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.82);
    max-width: 92%;
}

.card-code,
.card-name,
.card-value,
.card-rarity,
.card-goal,
.card-tag,
.card-flag {
    text-shadow:
        0 2px 10px rgba(0, 0, 0, 0.92),
        0 0 2px rgba(0, 0, 0, 0.85);
    -webkit-text-stroke: 0.35px rgba(0, 0, 0, 0.45);
    paint-order: stroke fill;
}

.card-slot .card-content {
    padding: 18px 16px 20px;
}

.card-slot .card-code {
    font-size: clamp(1.6rem, 5.2vw, 2.35rem);
}

.card-slot .card-name {
    font-size: clamp(0.95rem, 3.3vw, 1.1rem);
}

.card-slot .card-value {
    font-size: clamp(2.4rem, 8vw, 3.4rem);
}

.card-slot.show {
    animation: slotReveal 0.24s ease;
}

.card-slot.attack-right {
    z-index: 2;
    animation: attackRight 0.55s ease forwards;
}

.card-slot.attack-left {
    z-index: 2;
    animation: attackLeft 0.55s ease forwards;
}

.card-slot.hit::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.42), transparent 58%);
    animation: hitFlash 0.38s ease;
}

.card-slot.win {
    box-shadow:
        0 0 0 1px rgba(120, 245, 193, 0.4),
        0 0 28px rgba(120, 245, 193, 0.36);
}

.card-slot.lose {
    opacity: 0.68;
    filter: saturate(0.72);
    animation: loserFade 0.35s ease;
}

.game-info {
    margin-top: 20px;
    padding: 14px 16px;
    border-radius: 18px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.03);
}

.side-panel {
    display: grid;
    gap: 18px;
}

.action-group {
    gap: 8px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.collection-summary {
    gap: 10px;
    flex-wrap: wrap;
    margin: 14px 0 10px;
    color: var(--muted);
}

.objective-box {
    margin-bottom: 14px;
    padding: 14px 16px;
    border-radius: 18px;
    border: 1px solid rgba(255, 217, 119, 0.16);
    background: linear-gradient(180deg, rgba(255, 217, 119, 0.08), rgba(255, 255, 255, 0.03));
}

.objective-head {
    gap: 12px;
    margin-bottom: 8px;
}

.panel-note {
    min-height: 22px;
    margin-bottom: 12px;
}

.panel-note.tone-success {
    color: var(--accent);
}

.panel-note.tone-warning {
    color: var(--warning);
}

.panel-note.tone-danger {
    color: #ff98a2;
}

.unlock-card {
    border: 1px solid rgba(255, 217, 119, 0.28);
    border-radius: 16px;
    padding: 12px;
    background: rgba(255, 217, 119, 0.08);
}

.unlock-card strong {
    display: block;
}

.ranking-item {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 10px;
    align-items: center;
    padding: 12px 14px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.04);
}

.ranking-pos {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: rgba(120, 245, 193, 0.16);
    font-weight: 700;
}

.ranking-meta strong,
.ranking-extra strong {
    display: block;
}

.ranking-meta span,
.ranking-extra span {
    color: var(--muted);
    font-size: 0.8rem;
}

.panel-empty {
    padding: 16px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.04);
    color: var(--muted);
    text-align: center;
}

@keyframes slotReveal {
    0% {
        opacity: 0;
        transform: translateY(14px) scale(0.94);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes attackRight {
    0% {
        transform: translateX(0) scale(1);
    }
    35% {
        transform: translateX(18px) scale(1.04);
    }
    70% {
        transform: translateX(30px) scale(1.08);
    }
    100% {
        transform: translateX(14px) scale(1.02);
    }
}

@keyframes attackLeft {
    0% {
        transform: translateX(0) scale(1);
    }
    35% {
        transform: translateX(-18px) scale(1.04);
    }
    70% {
        transform: translateX(-30px) scale(1.08);
    }
    100% {
        transform: translateX(-14px) scale(1.02);
    }
}

@keyframes hitFlash {
    0% {
        opacity: 0;
    }
    40% {
        opacity: 1;
    }
    100% {
        opacity: 0;
    }
}

@keyframes loserFade {
    0% {
        opacity: 1;
    }
    100% {
        opacity: 0.68;
    }
}

@media (min-width: 760px) {
    .hand-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .collection-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 980px) {
    .duelo-layout {
        grid-template-columns: minmax(0, 2fr) minmax(370px, 1fr);
        align-items: start;
    }

    .status-row {
        flex-direction: row;
        align-items: stretch;
    }

    .hand-header {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }

    .hand-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .collection-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 640px) {
    .game-container {
        width: min(100%, calc(100% - 16px));
        padding-top: 16px;
    }

    .panel {
        padding: 16px;
        border-radius: 20px;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .header-badge,
    .action-group,
    .primary-btn,
    .ghost-btn {
        width: 100%;
    }

    .action-group {
        justify-content: stretch;
    }

    .panel-head {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .arena {
        gap: 10px;
    }

    .card-content {
        padding: 12px 10px 14px;
    }

    .card-slot .card-content {
        padding: 14px 10px 16px;
    }

    .ranking-item {
        grid-template-columns: auto 1fr;
    }

    .ranking-extra {
        grid-column: 2;
    }
}