.bso-wrapper {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1e3a5f 0%, #0d2137 100%);
    min-height: calc(100vh - 70px - 60px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    margin: -20px;
}

.bso-container {
    text-align: center;
    max-width: 960px;
    width: 100%;
}

.bso-room-container {
    max-width: 980px;
}

.bso-wrapper h1 {
    color: white;
    font-size: 2.4em;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.bso-subtitle {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.05em;
    margin-bottom: 20px;
}

.bso-landing-panel {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 25px 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}

.bso-primary-btn,
.bso-secondary-btn {
    padding: 12px 24px;
    font-size: 1em;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.bso-primary-btn {
    background: #2b6cb0;
    color: white;
}

.bso-primary-btn:hover:not(:disabled) {
    background: #2c5282;
    transform: translateY(-2px);
}

.bso-primary-btn:disabled,
.bso-secondary-btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
}

.bso-link-btn {
    display: inline-block;
    text-decoration: none;
    margin-top: 10px;
}

.bso-divider {
    margin: 18px 0;
    color: #888;
    font-size: 0.9em;
    text-transform: uppercase;
}

.bso-join-form {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.bso-join-form label {
    font-weight: 600;
    color: #333;
    font-size: 0.9em;
    text-align: left;
}

.bso-join-form input {
    padding: 10px;
    font-size: 1.1em;
    text-align: center;
    letter-spacing: 2px;
    text-transform: uppercase;
    border: 2px solid #ddd;
    border-radius: 8px;
}

.bso-secondary-btn {
    background: white;
    color: #2b6cb0;
    border: 2px solid #2b6cb0;
}

.bso-secondary-btn:hover:not(:disabled) {
    background: #ebf4ff;
}

.bso-error {
    color: #ffd43b;
    font-weight: 600;
    margin-top: 15px;
}

.bso-room-info {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    padding: 12px 15px;
    margin-bottom: 15px;
    text-align: left;
}

.bso-room-code-label {
    font-size: 0.95em;
    color: #333;
    margin-bottom: 8px;
}

.bso-share-row label,
.bso-name-row label {
    display: block;
    font-size: 0.85em;
    color: #555;
    margin-bottom: 4px;
}

.bso-share-input-row {
    display: flex;
    gap: 6px;
}

.bso-share-input-row input {
    flex: 1;
    min-width: 0;
    padding: 8px;
    font-size: 0.85em;
    border: 1px solid #ddd;
    border-radius: 6px;
    background: #f8f9fa;
}

.bso-copy-btn {
    padding: 8px 14px;
    font-size: 0.85em;
    white-space: nowrap;
}

.bso-spectator-badge {
    margin-top: 10px;
    display: inline-block;
    background: #fff3bf;
    color: #7d5a00;
    font-size: 0.85em;
    font-weight: 600;
    padding: 5px 10px;
    border-radius: 6px;
}

.bso-spectator-badge[hidden],
.bso-rematch-btn[hidden],
#bsoUnreadyBtn[hidden],
.bso-share-row[hidden],
.bso-name-row[hidden],
.bso-placement-actions[hidden],
.bso-player-boards[hidden],
.bso-spectator-boards[hidden],
.bso-opponent-label[hidden] {
    display: none !important;
}

.bso-name-row,
.bso-opponent-label {
    margin-top: 10px;
}

.bso-opponent-label {
    font-size: 0.9em;
    color: #444;
    font-weight: 600;
}

.bso-status-message {
    min-height: 32px;
    color: white;
    font-size: 1.2em;
    font-weight: 600;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
    margin-bottom: 12px;
}

.bso-status-message[hidden] {
    display: none !important;
}

.bso-status-message.bso-status-waiting,
.bso-status-message.bso-status-placement {
    animation: bsoPulse 1.6s ease-in-out infinite;
}

@keyframes bsoPulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.55;
    }
}

.bso-status-message.bso-status-won {
    color: #68d391;
}

.bso-placement-actions {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    padding: 14px;
    margin-bottom: 16px;
    text-align: left;
}

.bso-placement-toolbar {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
}

.bso-ship-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 180px;
}

.bso-ship-btn {
    padding: 8px 10px;
    border: 2px solid #cbd5e0;
    border-radius: 8px;
    background: white;
    color: #2d3748;
    font-size: 0.85em;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
}

.bso-ship-btn-selected {
    border-color: #2b6cb0;
    background: #ebf8ff;
}

.bso-ship-btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.bso-placement-controls {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: center;
}

.bso-arrow-pad {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.bso-arrow-pad-row {
    display: flex;
    gap: 4px;
}

.bso-arrow-btn {
    width: 42px;
    height: 42px;
    border: 2px solid #2b6cb0;
    border-radius: 8px;
    background: white;
    color: #2b6cb0;
    font-size: 1.2em;
    cursor: pointer;
}

.bso-arrow-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.bso-placement-buttons {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-top: 14px;
    flex-wrap: wrap;
}

.bso-placement-hint {
    margin: 12px 0 0;
    font-size: 0.85em;
    color: #555;
    text-align: center;
}

.bso-sink-toast {
    background: #fef3c7;
    color: #92400e;
    border: 2px solid #f59e0b;
    border-radius: 10px;
    padding: 10px 14px;
    margin-bottom: 8px;
    font-weight: 700;
    font-size: 1em;
    text-align: center;
}

.bso-sink-toast[hidden] {
    display: none !important;
}

.bso-sink-toast-victim {
    background: #fed7d7;
    color: #9b2c2c;
    border-color: #fc8181;
}

.bso-play-bar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 300;
    background: rgba(10, 25, 41, 0.98);
    border-top: 3px solid #2b6cb0;
    padding: 12px 16px;
    padding-bottom: max(12px, env(safe-area-inset-bottom));
    box-shadow: 0 -6px 24px rgba(0, 0, 0, 0.35);
}

.bso-play-bar[hidden] {
    display: none !important;
}

.bso-wrapper.bso-play-active {
    padding-bottom: 110px;
}

.bso-wrapper.bso-play-active .bso-actions {
    margin-bottom: 24px;
}

.bso-turn-banner {
    text-align: center;
    color: white;
}

.bso-turn-main {
    font-size: 1.35em;
    font-weight: 800;
    letter-spacing: 0.03em;
    line-height: 1.2;
}

.bso-turn-sub {
    margin-top: 4px;
    font-size: 0.9em;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.82);
}

.bso-turn-yours .bso-turn-main {
    color: #68d391;
    text-transform: uppercase;
}

.bso-play-bar:has(.bso-turn-yours) {
    border-top-color: #68d391;
}

.bso-turn-opponent .bso-turn-main,
.bso-turn-waiting .bso-turn-main {
    color: #cbd5e0;
}

.bso-turn-spectate .bso-turn-main {
    color: #90cdf4;
}

.bso-board-panel.bso-panel-active-turn {
    box-shadow: 0 0 0 2px #68d391, 0 0 18px rgba(104, 211, 145, 0.35);
}

.bso-board-panel.bso-panel-active-turn .bso-board-title {
    color: #68d391;
}

.bso-board-tabs[hidden] {
    display: none !important;
}

.bso-board-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
}

.bso-board-tab {
    flex: 1;
    padding: 10px 12px;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.08);
    color: white;
    font-size: 0.95em;
    font-weight: 700;
    cursor: pointer;
}

.bso-board-tab-active {
    background: rgba(255, 255, 255, 0.95);
    color: #1e3a5f;
    border-color: white;
}

.bso-boards.bso-mobile-tabs .bso-board-panel-hidden {
    display: none !important;
}

.bso-boards,
.bso-spectator-boards {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 16px;
}

.bso-board-panel {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    padding: 12px;
}

.bso-board-title {
    color: white;
    font-size: 1em;
    margin: 0 0 10px;
    font-weight: 600;
}

.bso-grid {
    display: grid;
    gap: 2px;
    background: rgba(0, 0, 0, 0.25);
    border-radius: 8px;
    padding: 4px;
}

.bso-label {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65em;
    color: rgba(255, 255, 255, 0.75);
    font-weight: 600;
    min-height: 18px;
}

.bso-cell {
    aspect-ratio: 1;
    border: none;
    border-radius: 3px;
    padding: 0;
    cursor: default;
    transition: transform 0.1s ease;
}

.bso-cell:not(:disabled):hover {
    transform: scale(1.08);
    cursor: crosshair;
}

.bso-water {
    background: #bee3f8;
}

.bso-ship {
    background: #38a169;
}

.bso-ship-0 { background: #276749; }
.bso-ship-1 { background: #2b6cb0; }
.bso-ship-2 { background: #6b46c1; }
.bso-ship-3 { background: #805ad5; }
.bso-ship-4 { background: #0987a0; }

.bso-ship-selected {
    background: #ecc94b;
    box-shadow: inset 0 0 0 2px #744210;
}

.bso-own-grid .bso-ship,
.bso-own-grid .bso-ship-0,
.bso-own-grid .bso-ship-1,
.bso-own-grid .bso-ship-2,
.bso-own-grid .bso-ship-3,
.bso-own-grid .bso-ship-4 {
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.25);
}

.bso-unknown {
    background: #2c5282;
}

.bso-target-grid .bso-revealed-ship,
.bso-spectator-grid .bso-revealed-ship {
    background: #d6bcfa;
    box-shadow: inset 0 0 0 2px #6b46c1;
    position: relative;
}

.bso-target-grid .bso-revealed-ship::after,
.bso-spectator-grid .bso-revealed-ship::after {
    content: "";
    position: absolute;
    inset: 22%;
    border-radius: 2px;
    background: #553c9a;
}

.bso-miss {
    position: relative;
}

.bso-target-grid .bso-miss,
.bso-spectator-grid .bso-miss {
    background: #bee3f8;
    box-shadow: inset 0 0 0 2px white;
}

.bso-own-grid .bso-miss {
    background: #edf2f7;
    box-shadow: inset 0 0 0 2px #a0aec0;
}

.bso-miss::after {
    content: "";
    position: absolute;
    inset: 35%;
    border-radius: 50%;
}

.bso-target-grid .bso-miss::after,
.bso-spectator-grid .bso-miss::after {
    background: #4a5568;
}

.bso-own-grid .bso-miss::after {
    background: #718096;
}

.bso-own-grid .bso-recent-opponent-shot {
    position: relative;
    z-index: 1;
    animation: bsoRecentShotPulse 1.4s ease-in-out 4;
}

.bso-own-grid .bso-recent-opponent-shot::before {
    content: "";
    position: absolute;
    inset: -3px;
    border-radius: 5px;
    border: 3px solid #f6ad55;
    box-shadow:
        0 0 0 1px rgba(0, 0, 0, 0.35),
        0 0 10px rgba(246, 173, 85, 0.95),
        0 0 20px rgba(237, 137, 54, 0.55);
    pointer-events: none;
    z-index: 2;
    animation: bsoRecentShotRing 1.4s ease-in-out 4;
}

@keyframes bsoRecentShotPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.08);
    }
}

@keyframes bsoRecentShotRing {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.55;
    }
}

.bso-hit {
    background: #fc8181;
    position: relative;
}

.bso-hit::after {
    content: "✕";
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #742a2a;
    font-size: 0.85em;
    font-weight: 700;
}

.bso-sunk {
    background: #9b2c2c;
    box-shadow: inset 0 0 0 2px #feb2b2;
    position: relative;
}

.bso-sunk::after {
    content: "☠";
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff5f5;
    font-size: 0.75em;
}

.bso-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 10px;
}

.bso-home-btn {
    display: inline-block;
    text-decoration: none;
    text-align: center;
}

#bsoTargetPanel[hidden] {
    display: none !important;
}

@media (max-width: 820px) {
    .bso-boards,
    .bso-spectator-boards {
        grid-template-columns: 1fr;
    }

    .bso-wrapper.bso-in-battle h1 {
        font-size: 1.35em;
        margin-bottom: 6px;
    }

    .bso-wrapper.bso-in-battle .bso-room-info {
        padding: 8px 10px;
        margin-bottom: 8px;
    }

    .bso-wrapper.bso-in-battle .bso-share-row,
    .bso-wrapper.bso-in-battle .bso-name-row {
        display: none !important;
    }

    .bso-wrapper.bso-in-battle .bso-opponent-label {
        margin-top: 0;
        font-size: 0.85em;
    }

    .bso-wrapper.bso-in-battle .bso-board-panel {
        padding: 8px;
        margin-bottom: 0;
    }

    .bso-wrapper.bso-in-battle .bso-board-title {
        font-size: 0.9em;
        margin-bottom: 6px;
    }

    .bso-play-bar {
        padding: 10px 12px;
        padding-bottom: max(10px, env(safe-area-inset-bottom));
    }

    .bso-turn-main {
        font-size: 1.15em;
    }

    .bso-turn-sub {
        font-size: 0.82em;
    }

    .bso-wrapper h1 {
        font-size: 2em;
    }

    .bso-wrapper.bso-play-active {
        padding-bottom: 105px;
    }
}

@media (max-width: 480px) {
    .bso-grid {
        gap: 1px;
        padding: 2px;
    }

    .bso-label {
        font-size: 0.5em;
        min-height: 12px;
    }

    .bso-wrapper.bso-in-battle {
        padding-top: 8px;
    }

    .bso-wrapper.bso-play-active {
        padding-bottom: 96px;
    }
}