:root {
    --bg: #0f172a;
    --panel: #111827;
    --panel-border: rgba(255,255,255,0.08);
    --text: #e5e7eb;
    --muted: #94a3b8;
    --primary: #22c55e;
    --primary-dark: #16a34a;
    --secondary: #334155;
    --danger: #dc2626;
    --danger-dark: #b91c1c;
    --card-back-top: #1e293b;
    --card-back-bottom: #0f172a;
    --shadow: 0 18px 45px rgba(15, 23, 42, 0.35);
    --radius: 22px;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
    font-family: Inter, Arial, Helvetica, sans-serif;
    background: linear-gradient(160deg, #020617 0%, #0f172a 45%, #111827 100%);
    color: var(--text);
}

body {
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input {
    font: inherit;
}

button {
    cursor: pointer;
}

.page-shell {
    max-width: 1320px;
    margin: 0 auto;
    padding: 24px;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 18px 22px;
    border: 1px solid var(--panel-border);
    background: rgba(15, 23, 42, 0.75);
    border-radius: 24px;
    backdrop-filter: blur(8px);
    box-shadow: var(--shadow);
}

.brand-title {
    font-size: 1.35rem;
    font-weight: 800;
}

.brand-subtitle {
    color: var(--muted);
    margin-top: 4px;
    font-size: 0.95rem;
}

.top-nav {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.top-nav a {
    padding: 10px 14px;
    border-radius: 999px;
    border: 1px solid var(--panel-border);
    background: rgba(30, 41, 59, 0.9);
    color: var(--text);
    font-weight: 700;
}

.top-nav a.active {
    background: rgba(34, 197, 94, 0.2);
    border-color: rgba(34, 197, 94, 0.55);
}

.content-shell {
    margin-top: 22px;
}

.hero-panel,
.panel {
    background: rgba(17, 24, 39, 0.88);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.hero-panel {
    padding: 24px;
    display: flex;
    justify-content: space-between;
    gap: 20px;
    align-items: flex-start;
    flex-wrap: wrap;
}

.hero-panel h1,
.panel h2,
.panel h3 {
    margin-top: 0;
}

.panel {
    padding: 24px;
}

.narrow-panel {
    max-width: 520px;
}

.muted {
    color: var(--muted);
}

.small-text {
    font-size: 0.92rem;
}

.hero-stats {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.stat-box {
    min-width: 120px;
    padding: 14px 16px;
    border-radius: 18px;
    background: rgba(2, 6, 23, 0.45);
    border: 1px solid var(--panel-border);
}

.stat-box span {
    display: block;
    color: var(--muted);
    font-size: 0.85rem;
    margin-bottom: 8px;
}

.stat-box strong {
    font-size: 1.15rem;
}

.feedback {
    margin-top: 18px;
    padding: 14px 18px;
    border-radius: 18px;
    font-weight: 600;
}

.feedback-success {
    background: rgba(34, 197, 94, 0.18);
    border: 1px solid rgba(34, 197, 94, 0.45);
}

.feedback-error {
    background: rgba(239, 68, 68, 0.16);
    border: 1px solid rgba(239, 68, 68, 0.45);
}

.layout-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 20px;
    margin-top: 20px;
}

.form-row {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 18px;
}

label {
    font-weight: 700;
}

input {
    border-radius: 14px;
    border: 1px solid rgba(148, 163, 184, 0.25);
    background: rgba(15, 23, 42, 0.88);
    color: var(--text);
    padding: 14px 16px;
}

.primary-button,
.secondary-button,
.danger-button {
    border: 0;
    border-radius: 14px;
    padding: 12px 16px;
    font-weight: 800;
    transition: transform 0.15s ease, opacity 0.15s ease, background 0.15s ease;
}

.primary-button:hover,
.secondary-button:hover,
.danger-button:hover,
.card-tile-clickable:hover {
    transform: translateY(-1px);
}

.primary-button {
    background: var(--primary);
    color: #06240f;
}

.primary-button:hover {
    background: var(--primary-dark);
}

.secondary-button {
    background: var(--secondary);
    color: var(--text);
}

.danger-button {
    background: var(--danger);
    color: #fff;
}

.danger-button:hover {
    background: var(--danger-dark);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 18px;
}

.button-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.player-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.player-chip {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 14px;
    border-radius: 16px;
    background: rgba(2, 6, 23, 0.42);
    border: 1px solid rgba(148, 163, 184, 0.12);
}

.player-chip-self {
    border-color: rgba(34, 197, 94, 0.55);
}

.my-card-panel {
    display: grid;
    grid-template-columns: 1fr minmax(220px, 280px);
    gap: 18px;
    align-items: center;
    margin-top: 18px;
    padding: 18px;
    border-radius: 20px;
    background: rgba(2, 6, 23, 0.4);
}

.revealed-card-image {
    width: 100%;
    max-height: 420px;
    object-fit: contain;
    border-radius: 18px;
    background: #000;
    padding: 8px;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 18px;
}

.card-tile {
    width: 100%;
    min-height: 320px;
    border: 1px solid rgba(148, 163, 184, 0.18);
    border-radius: 22px;
    background: rgba(2, 6, 23, 0.45);
    color: var(--text);
    padding: 10px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 10px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
}

.card-tile[disabled] {
    cursor: default;
    opacity: 1;
}

.card-tile-clickable {
    border-color: rgba(34, 197, 94, 0.35);
}

.card-tile-mine {
    outline: 2px solid rgba(34, 197, 94, 0.45);
}

.admin-card-tile {
    cursor: default;
}

.card-face {
    width: 100%;
    height: 100%;
    max-height: 320px;
    object-fit: contain;
    border-radius: 16px;
    background: #000;
}

.card-caption {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    align-items: center;
    padding: 6px 4px 0;
    font-size: 0.95rem;
}

.card-caption span {
    color: var(--muted);
    text-align: right;
}

.card-back {
    height: 100%;
    min-height: 300px;
    border-radius: 18px;
    border: 1px dashed rgba(148, 163, 184, 0.25);
    background: linear-gradient(180deg, var(--card-back-top), var(--card-back-bottom));
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 20px;
    gap: 14px;
}

.card-slot-number {
    font-size: 1.15rem;
    font-weight: 800;
}

.card-back-status {
    color: var(--muted);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 12px 10px;
    border-bottom: 1px solid rgba(148, 163, 184, 0.12);
    text-align: left;
}

.data-table th {
    color: var(--muted);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

code {
    padding: 2px 6px;
    border-radius: 8px;
    background: rgba(2, 6, 23, 0.65);
}

@media (max-width: 960px) {
    .layout-grid,
    .my-card-panel {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .page-shell {
        padding: 16px;
    }

    .top-bar,
    .hero-panel,
    .panel {
        padding: 18px;
    }

    .top-bar,
    .panel-header {
        flex-direction: column;
        align-items: stretch;
    }

    .card-grid {
        grid-template-columns: 1fr;
    }
}