* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-background: #000814;
    --color-water: #001219;
    --color-grid-line: #0a9396;
    --color-ship: #94d2bd;
    --color-hit: #ee9b00;
    --color-miss: #005f73;
    --color-text: #e9d8a6;

    --color-accent: #bb3e03;
    --color-accent-alt: #9b2226;
    --color-current-turn: #f4a261;
    --color-hover: #0a9396;
    --color-active: #94d2bd;
    --color-pressed: #ee9b00;

    --shadow-neon: 0 0 10px #0a9396, 0 0 20px #0a9396;
    --shadow-hit: 0 0 10px #ee9b00, 0 0 20px #ee9b00;
    --shadow-text: 0 0 1px #e9d8a6;

    --color-btn-bot-bg: #0a9396;
    --color-btn-bot-text: #e9d8a6;
    --color-btn-bot-hover: #0b7c7f;
    --shadow-btn-bot: 0 0 10px #0a9396, 0 0 20px #0a9396;
    --shadow-btn-bot-hover: 0 0 8px #0a9396, 0 0 16px #0a9396;

    --color-btn-player-bg: #bb3e03;
    --color-btn-player-text: #e9d8a6;
    --color-btn-player-hover: #d25a0a;

    --shadow-btn-player: 0 0 8px #bb3e03, 0 0 12px #ee9b00;
    --shadow-btn-player-hover: 0 0 10px #ee9b00, 0 0 20px #bb3e03;

    --color-btn-reset-bg: #e63946;
    --color-btn-reset-text: #ffffff;
    --color-btn-reset-hover: #d62839;
    --shadow-btn-reset: 0 0 8px #e63946, 0 0 16px #e63946;
    --shadow-btn-reset-hover: 0 0 10px #d62839, 0 0 20px #d62839;

    --color-btn-save-bg: #2a9d8f;
    --color-btn-save-text: #ffffff;
    --color-btn-save-hover: #1f7f74;
    --shadow-btn-save: 0 0 8px #2a9d8f, 0 0 12px #2a9d8f;
    --shadow-btn-save-hover: 0 0 10px #1f7f74, 0 0 18px #1f7f74;

    --color-btn-random-bg: #f4a261;
    --color-btn-random-text: var(--color-background);
    --color-btn-random-hover: #e07b3b;
    --shadow-btn-random: 0 0 8px #f4a261, 0 0 16px #f4a261;
    --shadow-btn-random-hover: 0 0 10px #e07b3b, 0 0 20px #e07b3b;
}

body {
    background-color: var(--color-background);
    color: var(--color-text);
    text-shadow: var(--shadow-text);
    font-family: 'Orbitron', sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100vh;
}

.game {
    display: none;
    position: relative;
    justify-content: center;
    gap: var(--cell-size);
}

.ships {
    display: flex;
    flex-wrap: wrap;
    width: 30%;

    p {
        margin-top: 1rem;
    }
}

.title {
    margin: 1.5rem 0 2rem 0;
    font-size: 4rem;
}

.ship-unset {
    border: 1px solid var(--color-grid-line);
    height: var(--cell-size);
    margin: 1rem;
    background-color: var(--color-ship);
}

.ship-unset[draggable="true"] {
    cursor: grab;
}

.ship-unset.disabled {
    background-color: inherit;
    border: 1px dashed grey;
}

.board {
    background-color: var(--color-water);
    width: fit-content;
    aspect-ratio: 1 / 1;
    position: relative;

    display: grid;
    grid-template-columns: repeat(8, var(--cell-size));
    grid-auto-rows: var(--cell-size);
    padding: 4px;
}

.board.disabled {
    opacity: 0.5;
}

.board:not(.target) {
    & .cell {

        box-shadow: none;

        &:not(.hit, .miss, .ship) {
            cursor: not-allowed;
            background-color: inherit;
        }
    }
}

.board.target {
    opacity: 1;

    & .cell:not(.hit, .miss) {
        cursor: pointer;
    }
}

.cell {
    background-color: var(--color-water);
    border-top: 2px solid var(--color-grid-line);
    border-left: 2px solid var(--color-grid-line);
    width: var(--cell-size);
    height: var(--cell-size);
    transition: 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    transition: background-color 150ms ease, transform 120ms ease;
}

.cell.ship {
    background-color: var(--color-ship);
    box-shadow: inset 0 0 0 1px white;
}

.board .cell:nth-child(8n) {
    border-right: 2px solid var(--color-grid-line);
}

.board .cell:nth-child(n+57) {
    border-bottom: 2px solid var(--color-grid-line);
}

.cell:hover {
    box-shadow: var(--shadow-neon);
    background-color: var(--color-hover);
}

.cell.hit {
    background-color: var(--color-hit);
    cursor: not-allowed;
}

.cell.miss {
    background-color: var(--color-miss);
    opacity: 0.8;
    cursor: not-allowed;
}

.cell.preview {
    background-color: rgba(148, 210, 189, 0.12);
}

.cell.invalid-preview {
    background-color: rgba(230, 155, 0, 0.06);
}

.preview-overlay {
    position: absolute;
    box-sizing: border-box;
    border-radius: 2px;
    transition: all 100ms ease;
    z-index: 50;
    display: none;
}

.preview-overlay.valid {
    border: 2px solid rgba(148, 210, 189, 0.95);
    background: rgba(148, 210, 189, 0.08);
}

.preview-overlay.invalid {
    border: 2px dashed rgba(230, 155, 0, 0.95);
    background: rgba(230, 155, 0, 0.06);
}

.home {
    display: flex;
}

.btn {
    width: clamp(150px, 200px, 250px);
    padding: 1rem 0;
    border: none;
    border-radius: 1rem;
    cursor: pointer;
    transition: background-color 0.2s ease-in;
    transition: box-shadow 0.2s ease-out;
}

.btn.choice {
    margin: 2rem;
    display: flex;
    gap: 1rem;
    justify-content: center;
    justify-content: space-evenly;
}

.bot {
    background-color: var(--color-btn-bot-bg);
    color: var(--color-btn-bot-text);
    box-shadow: var(--shadow-btn-bot);
}

.bot:hover {
    background-color: var(--color-btn-bot-hover);
    box-shadow: var(--shadow-btn-bot-hover);
}

.player {
    background-color: var(--color-btn-player-bg);
    color: var(--color-btn-player-text);
    box-shadow: var(--shadow-btn-player);
}

.player:hover {
    background-color: var(--color-btn-player-hover);
    box-shadow: var(--shadow-btn-player-hover);
}

.text {
    display: flex;
    flex-direction: column;
    align-items: start;
    justify-content: center;
}

.playvs {
    font-size: 1rem;
    opacity: 0.8;
}

.opponent {
    font-size: 1.5rem;
    font-weight: 800;
}

.buttons {
    display: flex;
    justify-content: space-between;
    margin-top: 2rem;
    gap: 2rem;
}

.deployment-info {
    margin: 1rem 0;
    padding: 0.75rem 1rem;
    line-height: 1.5;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-left: 4px solid var(--color-grid-line);
    border-radius: 6px;
}

.btn.reset {
    background-color: var(--color-btn-reset-bg);
    color: var(--color-btn-reset-text);
    box-shadow: var(--shadow-btn-reset);
}

.btn.reset:hover {
    background-color: var(--color-btn-reset-hover);
    box-shadow: var(--shadow-btn-reset-hover);
}

.btn.save {
    background-color: var(--color-btn-save-bg);
    color: var(--color-btn-save-text);
    box-shadow: var(--shadow-btn-save);
}

.btn.save:hover {
    background-color: var(--color-btn-save-hover);
    box-shadow: var(--shadow-btn-save-hover);
}

.btn.random {
    background-color: var(--color-btn-random-bg);
    color: var(--color-btn-random-text);
    box-shadow: var(--shadow-btn-random);
}

.btn.random:hover {
    background-color: var(--color-btn-random-hover);
    box-shadow: var(--shadow-btn-random-hover);
}

.hide-screen {
    position: fixed;
    top: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(10, 20, 40, 1);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    text-align: center;
}

.continue-btn {
    margin-top: 1.2rem;
    padding: 1rem 2.5rem;
    font-size: 1.2rem;
    background: var(--color-btn-save-bg, #2a9d8f);
    color: var(--color-btn-save-text, #fff);
    border: none;
    border-radius: 0.7rem;
    cursor: pointer;
    box-shadow: 0 0 12px #0a9396;
    transition: background 0.2s, box-shadow 0.2s;
}

.continue-btn:hover {
    background: var(--color-btn-save-hover, #1f7f74);
    box-shadow: 0 0 20px #2a9d8f;
}

.content {
    width: 50%;
}

.hidden {
    display: none;
}

.small-ships {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    width: 100px;
}

.ship-small {
    background-color: var(--color-ship);
}

.ship-small.sunk {
    background-color: var(--color-btn-reset-bg);
}

.turn {
    margin-top: 1rem;
    color: var(--color-current-turn);
    font-weight: bold;
    font-size: 1.2rem;
    text-shadow: 0 0 6px #f4a26188;
}

.winner {
    position: absolute;

    top: 105%;
    left: 70%;
    color: #ffd166;
    text-shadow: 0 0 12px #f4a261, 0 0 24px #bb3e03;
    font-size: 2.5rem;
    font-weight: bold;
    letter-spacing: 2px;
}

.play-again {
    display: none;
    margin-top: 5rem;
}

.play-again-btn {
    background: var(--color-btn-player-bg);
    color: var(--color-btn-player-text);
    border: none;
    font-size: 1rem;
    font-weight: 700;
}

.play-again-btn:hover {
    background: var(--color-btn-player-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-btn-bot-hover);
}

.play-again-btn:focus {
    outline: 3px solid rgba(233, 216, 166, 0.12);
    outline-offset: 3px;
}