:root {
    --battleship-assets: "../images/games/battleship";
    --navy: #031a2c;
    --ocean: #087eaf;
    --blue-team: #38bdf8;
    --red-team: #fb7185;
}

/* Page and game layout */

body.game-app {
    background:
        linear-gradient(rgba(0, 18, 35, 0.25), rgba(0, 18, 35, 0.25)),
        url("../images/games/battleship/backgrounds/main_background.png")
        center / cover fixed;
}

#main-screen {
    min-height: calc(100vh - 48px);
    padding: 1.25rem clamp(1rem, 3vw, 3rem) 2rem;
}

#turn-panel {
    width: min(100%, 900px);
    margin: 0 auto 1rem;
    padding: 0.8rem 1.5rem;
    text-align: center;
    border: 2px solid rgba(125, 211, 252, 0.7);
    border-radius: 14px;
    background: rgba(3, 26, 44, 0.88);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.32);
}

#game-title {
    width: min(100%, 1000px);
    height: 150px;
    margin: 0 auto 0.25rem;
    overflow: hidden;
    text-indent: -9999px;
    background:
        url("../images/games/battleship/backgrounds/battleship_logo.png")
        center / contain no-repeat;
}

#turn-message {
    margin: 0;
    color: #f8fafc;
    font-size: clamp(1rem, 2vw, 1.3rem);
    font-weight: 700;
}

/* Boards */

#battlefield {
    display: grid;
    grid-template-columns: repeat(2, minmax(260px, 1fr));
    gap: clamp(1rem, 3vw, 3rem);
    width: min(100%, 1200px);
    margin: 0 auto 1.5rem;
}

.team-board {
    min-width: 0;
    padding: clamp(0.65rem, 1.5vw, 1rem);
    border: 3px solid rgba(255, 255, 255, 0.72);
    border-radius: 18px;
    background: rgba(3, 26, 44, 0.82);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
}

.team-board[data-team="0"] {
    border-color: var(--blue-team);
}

.team-board[data-team="1"] {
    border-color: var(--red-team);
}

.board-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0 0.25rem 0.65rem;
    background: transparent;
    border: 0;
    text-align: left;
}

.board-heading h2,
.board-heading span {
    margin: 0;
    color: #fff;
    font-size: clamp(0.9rem, 1.7vw, 1.2rem);
    font-weight: 800;
}

.team-board[data-team="0"] .board-heading h2 {
    color: var(--blue-team);
}

.team-board[data-team="1"] .board-heading h2 {
    color: var(--red-team);
}

.battleship-board {
    position: relative;
    display: grid;
    grid-template-columns: 2rem repeat(10, 1fr);
    grid-template-rows: 2rem repeat(10, 1fr);
    aspect-ratio: 1;
    overflow: hidden;
    border: 2px solid rgba(255, 255, 255, 0.75);
    border-radius: 8px;
    background:
        linear-gradient(rgba(4, 116, 170, 0.18), rgba(4, 116, 170, 0.18)),
        url("../images/games/battleship/backgrounds/board_background_2.png")
        center / cover;
}

.board-corner,
.column-label,
.row-label {
    display: grid;
    place-items: center;
    color: #fff;
    font-size: clamp(0.7rem, 1.5vw, 1rem);
    font-weight: 900;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.75);
    background: rgba(2, 24, 42, 0.7);
}

.column-label {
    border-bottom: 1px solid rgba(255, 255, 255, 0.45);
}

.row-label {
    border-right: 1px solid rgba(255, 255, 255, 0.45);
}

.board-cell::after {
    content: none;
    position: absolute;
    inset: 0;
    background-position: center;
    background-repeat: no-repeat;
    background-size: 78% auto;
}

.board-cell.attackable {
    cursor: crosshair;
    background-color: rgba(250, 204, 21, 0.18);
}

.board-cell.attackable:hover {
    background-color: rgba(250, 204, 21, 0.5);
    box-shadow: inset 0 0 0 2px #facc15;
}

/* Ships are never styled or shown on untouched squares. */

.board-cell.is-hit {
    background-color: rgba(239, 68, 68, 0.52);
}

.board-cell.is-miss {
    background-color: rgba(66, 68, 70, 0.26);
}

.board-cell:disabled {
    cursor: default;
}

/* Question-card grid */

#questions-section {
    width: min(100%, 1040px);
    margin: 0 auto;
    padding: 1rem;
    text-align: center;
    border-radius: 18px;
    background: rgba(3, 26, 44, 0.84);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
}

#questions-section h2 {
    margin: 0 0 0.8rem;
    color: #fff;
    font-size: clamp(1.15rem, 2vw, 1.5rem);
    font-weight: 800;
}

#question-grid {
    display: grid;
    grid-template-columns: repeat(6, minmax(70px, 1fr));
    gap: 0.7rem;
}

.question-card {
    display: grid;
    place-items: center;
    aspect-ratio: 0.7;
    min-height: 90px;
    border: 2px solid rgba(255, 255, 255, 0.85);
    border-radius: 10px;
    color: #fff;
    font-size: clamp(4.2rem, 8vw, 8.8rem);
    font-weight: 900;
    text-shadow: 2px 2px 2px rgba(0, 0, 0, 0.65);
    cursor: pointer;
    background:
        url("../images/games/battleship/cards/battleship_card_background.png")
        center / cover;
    transition: transform 160ms ease, filter 160ms ease;
}

.question-card:hover {
    filter: brightness(1.15);
    transform: translateY(-5px);
}

.question-card.used-card {
    filter: grayscale(1) brightness(0.5);
    cursor: default;
    transform: none;
}

/* Shared question overlay */

#question-overlay,
#reward-overlay,
#winner-overlay,
#continue-overlay {
    position: fixed;
    z-index: 20;
    inset: 0;
    display: grid;
    place-items: center;
    padding: 1rem;
    background: rgba(0, 9, 20, 0.8);
}

#question-overlay {
    visibility: hidden;
    opacity: 0;
    transition: opacity 180ms ease, visibility 180ms ease;
}

#question-overlay.show {
    visibility: visible;
    opacity: 1;
}

#question-card,
#reward-window,
#winner-window,
#continue-window {
    width: min(100%, 740px);
    padding: clamp(1rem, 4vw, 2rem);
    color: #fff;
    text-align: center;
    border: 3px solid rgba(255, 255, 255, 0.85);
    border-radius: 20px;
    background:
        linear-gradient(rgba(0, 17, 35, 0.78), rgba(0, 17, 35, 0.78)),
        url("../images/games/battleship/backgrounds/question_background.png")
        center / cover;
    box-shadow: 0 18px 55px rgba(0, 0, 0, 0.55);
}

#instruction {
    margin: 0 0 1rem;
    font-size: clamp(1.25rem, 3vw, 2rem);
}

#question-box {
    display: grid;
    place-items: center;
    min-height: 180px;
    padding: 1rem;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.91);
    color: var(--navy);
    font-size: clamp(1.2rem, 3vw, 2rem);
    font-weight: 800;
}

#question-image {
    max-width: 100%;
    max-height: 280px;
    object-fit: contain;
}

#answer-box {
    min-height: 48px;
    margin-top: 0.8rem;
    padding: 0.7rem 1rem;
    border-radius: 10px;
    background:
        url("../images/games/battleship/backgrounds/answer_background.png")
        center / cover;
    color: #fff;
    font-size: clamp(1rem, 2vw, 1.35rem);
    font-weight: 800;
}

#question-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1rem;
}

#correct-btn,
#incorrect-btn {
    width: 62px;
    height: 62px;
    border: 0;
    background-position: center;
    background-repeat: no-repeat;
    background-size: contain;
}

#correct-btn {
    background-image:
        url("../images/games/battleship/buttons/right_btn.png");
}

#incorrect-btn {
    background-image:
        url("../images/games/battleship/buttons/wrong_btn.png");
}

/* Attack and winner overlays */

#reward-window {
    background:
        linear-gradient(rgba(0, 17, 35, 0.68), rgba(0, 17, 35, 0.68)),
        url("../images/games/battleship/backgrounds/main_background.png")
        center / cover;
}

#winner-window {
    background:
        linear-gradient(rgba(0, 17, 35, 0.64), rgba(0, 17, 35, 0.64)),
        url("../images/games/battleship/backgrounds/battleship_background.png")
        center / cover;
}

#reward-title,
#winner-title {
    margin-bottom: 0.8rem;
    font-size: clamp(1.7rem, 4vw, 2.7rem);
    font-weight: 900;
}

#reward-message,
#winner-message {
    font-size: clamp(1rem, 2.3vw, 1.35rem);
    font-weight: 700;
}

#shots-remaining {
    display: inline-block;
    margin: 0.5rem 0 1.25rem;
    padding: 0.6rem 1rem;
    border: 2px solid #facc15;
    border-radius: 999px;
    background: rgba(0, 0, 0, 0.5);
    color: #fef08a;
    font-size: 1.15rem;
    font-weight: 800;
}

/* Mobile */

@media (max-width: 700px) {
    #battlefield {
        grid-template-columns: 1fr;
    }

    .board-heading {
        padding-bottom: 0.45rem;
    }

    .team-board {
        max-width: 500px;
        width: 100%;
        margin: 0 auto;
    }

    #question-grid {
        grid-template-columns: repeat(4, minmax(56px, 1fr));
    }

    .question-card {
        min-height: 72px;
    }
}

@media (max-width: 440px) {
    #question-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

.team-name-and-missiles {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.45rem;
}

.missile-rack {
    display: flex;
    align-items: center;
    gap: 0.15rem;
    min-height: 40px;
}

.missile-icon {
    width: auto;
    height: 34px;
    object-fit: contain;
    transition: filter 180ms ease, transform 180ms ease;
}

.missile-icon.is-loaded {
    filter: drop-shadow(0 0 5px rgba(250, 204, 21, 0.95));
    transform: translateY(-2px);
}

#missile-layer {
    position: fixed;
    z-index: 30;
    inset: 0;
    pointer-events: none;
}

.flying-missile {
    position: fixed;
    z-index: 31;
    width: auto;
    height: clamp(62px, 10vw, 105px);
    pointer-events: none;
    filter: drop-shadow(0 5px 6px rgba(0, 0, 0, 0.55));
    transform: translate(-50%, -50%) rotate(var(--missile-angle));
    transition:
        left 720ms cubic-bezier(0.22, 0.8, 0.25, 1),
        top 720ms cubic-bezier(0.22, 0.8, 0.25, 1);
}

#question-card {
    position: relative;
    padding:
        clamp(1rem, 3vw, 2rem)
        clamp(5rem, 11vw, 8rem);
}

#question-buttons {
    position: static;
    display: block;
    margin: 0;
}

#correct-btn,
#incorrect-btn {
    position: absolute;
    top: 50%;
    width: clamp(44px, 6vw, 76px);
    height: clamp(150px, 34vw, 300px);
    transform: translateY(-50%);
    border: 0 !important;
    background-color: transparent !important;
    box-shadow: none !important;
    background-size: contain;
    background-position: center;
}

#correct-btn {
    right: clamp(0.6rem, 2vw, 1.5rem);
}

#incorrect-btn {
    left: clamp(0.6rem, 2vw, 1.5rem);
}

#show-answer-btn {
    margin-top: 1rem;
}

.reward-missile-reveal {
    display: flex;
    justify-content: center;
    align-items: end;
    gap: clamp(0.15rem, 1vw, 0.5rem);
    min-height: 130px;
    margin: 1rem 0;
}

.reward-missile {
    width: auto;
    height: clamp(65px, 10vw, 110px);
    object-fit: contain;
    opacity: 0.65;
    transition: opacity 180ms ease, filter 180ms ease;
}

.reward-missile.is-revealed {
    opacity: 1;
    filter: drop-shadow(0 0 8px rgba(250, 204, 21, 1));
    animation: missile-reveal 420ms ease-out;
}

@keyframes missile-reveal {
    0% {
        transform: translateY(24px) scale(0.8);
    }

    60% {
        transform: translateY(-10px) scale(1.1);
    }

    100% {
        transform: translateY(0) scale(1);
    }
}

.sunk-ship {
    position: absolute;
    z-index: 5;
    pointer-events: none;
}

.sunk-ship img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: fill;
}

.sunk-ship.is-vertical img {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(90deg);
}