/* ===== Темы: темная (по умолчанию) и пастельная светлая ===== */
:root, html[data-theme="dark"] {
    --bg: #0e1626;
    --bg-grad: radial-gradient(ellipse at top, #1b2a47 0%, #0e1626 60%);
    --panel: #1a2740;
    --panel-2: #223253;
    --text: #e9edf5;
    --text-dim: #93a1bd;
    --accent: #a8e6cf;       /* мятный */
    --accent-2: #ffb7b2;     /* розовый */
    --accent-3: #c7ceea;     /* лавандовый */
    --accent-4: #ffdac1;     /* персиковый */
    --cell: #16223a;
    --cell-border: #2b3d63;
    --ship: #7fb3d5;
    --hit: #ff8fa3;
    --miss: #5c6f92;
    --shadow: 0 8px 24px rgba(0, 0, 0, .35);
}

html[data-theme="light"] {
    --bg: #f6f1ea;
    --bg-grad: radial-gradient(ellipse at top, #fdeae4 0%, #f6f1ea 60%);
    --panel: #ffffff;
    --panel-2: #f3ece4;
    --text: #4a4e69;
    --text-dim: #8d87a8;
    --accent: #a8e6cf;
    --accent-2: #ffb7b2;
    --accent-3: #c7ceea;
    --accent-4: #ffdac1;
    --cell: #efe7dc;
    --cell-border: #d8cfc2;
    --ship: #8ecae6;
    --hit: #ef6f6c;
    --miss: #b7c0d8;
    --shadow: 0 8px 24px rgba(74, 78, 105, .15);
}

* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }

body {
    font-family: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    background-image: var(--bg-grad);
    background-attachment: fixed;
    color: var(--text);
    min-height: 100vh;
    transition: background .3s, color .3s;
}

#app {
    max-width: 480px;
    margin: 0 auto;
    padding: 12px 16px 32px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0 16px;
}

.app-header h1 {
    font-size: 22px;
    font-weight: 700;
    background: linear-gradient(90deg, var(--accent), var(--accent-3));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.icon-btn {
    background: var(--panel);
    border: 1px solid var(--cell-border);
    border-radius: 10px;
    font-size: 16px;
    padding: 6px 10px;
    cursor: pointer;
    color: var(--text);
}

main { flex: 1; display: flex; flex-direction: column; }

/* ===== Экраны ===== */
.screen {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    animation: fadeIn .25s ease;
    width: 100%;
}

.screen.active { display: flex; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: none; }
}

.status-text { font-size: 17px; font-weight: 600; text-align: center; }
.hint { color: var(--text-dim); font-size: 13px; text-align: center; line-height: 1.5; }

.row { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }

/* ===== Кнопки ===== */
.btn {
    display: block;
    width: 100%;
    max-width: 320px;
    padding: 14px 20px;
    border: none;
    border-radius: 14px;
    font-size: 16px;
    font-weight: 600;
    font-family: inherit;
    color: var(--text);
    background: var(--panel-2);
    cursor: pointer;
    transition: transform .12s, box-shadow .2s, opacity .2s;
    box-shadow: var(--shadow);
}

.btn:active { transform: scale(.96); }
.btn:disabled { opacity: .4; cursor: default; box-shadow: none; }
.btn-primary { background: linear-gradient(135deg, var(--accent), #7fd4b4); color: #123524; }
.btn-ghost { background: var(--panel); box-shadow: none; border: 1px solid var(--cell-border); }

.menu-buttons {
    display: flex;
    flex-direction: column;
    gap: 14px;
    width: 100%;
    align-items: center;
    margin-top: 32px;
}

/* ===== Спиннер ===== */
.spinner {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 4px solid var(--cell-border);
    border-top-color: var(--accent);
    animation: spin 1s linear infinite;
}
.spinner.small { width: 28px; height: 28px; border-width: 3px; }

@keyframes spin { to { transform: rotate(360deg); } }

/* ===== Ссылка-приглашение ===== */
.link-box {
    background: var(--panel);
    border: 1px dashed var(--cell-border);
    border-radius: 12px;
    padding: 12px 16px;
    max-width: 100%;
    overflow-wrap: anywhere;
    font-size: 13px;
    color: var(--accent-3);
    text-align: center;
}

/* ===== Карточки игроков ===== */
.players-bar {
    display: flex;
    gap: 12px;
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
}

.player-card {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--panel);
    border: 1px solid var(--cell-border);
    border-radius: 14px;
    padding: 8px 14px 8px 8px;
    min-width: 140px;
    transition: box-shadow .2s, border-color .2s;
}

.player-card.turn {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent), var(--shadow);
}

.player-card .avatar, .avatar-fallback {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

.avatar-fallback {
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 15px;
    color: #123524;
    background: var(--accent);
}

.player-card .pname {
    font-size: 14px;
    font-weight: 600;
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ===== Палитра кораблей ===== */
#ship-palette {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
}

.ship-chip {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 8px 10px;
    border-radius: 12px;
    background: var(--panel);
    border: 2px solid var(--cell-border);
    cursor: pointer;
    transition: border-color .15s, transform .12s;
}

.ship-chip:active { transform: scale(.94); }
.ship-chip.selected { border-color: var(--accent); }
.ship-chip.depleted { opacity: .35; cursor: default; }

.ship-cells { display: flex; gap: 3px; }
.ship-cell {
    width: 14px;
    height: 14px;
    border-radius: 4px;
    background: var(--ship);
}
.ship-count { font-size: 11px; color: var(--text-dim); }

/* ===== Игровое поле ===== */
.board-wrap { display: flex; justify-content: center; width: 100%; }

.board {
    display: grid;
    grid-template-columns: 22px repeat(10, 1fr);
    grid-template-rows: 22px repeat(10, 1fr);
    gap: 2px;
    width: min(92vw, 380px);
    aspect-ratio: 1;
    user-select: none;
}

.coord {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    color: var(--text-dim);
}

.cell {
    background: var(--cell);
    border: 1px solid var(--cell-border);
    border-radius: 4px;
    cursor: pointer;
    position: relative;
    transition: background .15s;
}

.cell.ship-cell-placed { background: var(--ship); border-color: var(--ship); }
.cell.preview-ok { background: var(--accent); opacity: .7; }
.cell.preview-bad { background: var(--hit); opacity: .6; }

.cell.miss::after {
    content: "";
    position: absolute;
    inset: 35%;
    border-radius: 50%;
    background: var(--miss);
}

.cell.hit, .cell.sunk {
    background: color-mix(in srgb, var(--hit) 45%, var(--cell));
}

.cell.hit::before, .cell.sunk::before {
    content: "✕";
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--hit);
    font-size: 14px;
    font-weight: 700;
}

.cell.sunk { background: color-mix(in srgb, var(--hit) 70%, var(--cell)); }
.cell.sunk::before { color: #fff; }

#enemy-board .cell:not(.miss):not(.hit):not(.sunk):hover {
    background: var(--panel-2);
}

#enemy-board.locked .cell { cursor: default; }
#enemy-board:not(.locked) .cell:not(.miss):not(.hit):not(.sunk) { cursor: crosshair; }

/* ===== Бой ===== */
.battle-boards {
    display: flex;
    flex-direction: column;
    gap: 18px;
    width: 100%;
    align-items: center;
}

.board-block { width: 100%; display: flex; flex-direction: column; align-items: center; gap: 6px; }
.board-block h3 { font-size: 14px; color: var(--text-dim); font-weight: 600; }

.ships-left {
    background: var(--panel-2);
    border-radius: 8px;
    padding: 1px 8px;
    font-size: 12px;
    color: var(--text);
    margin-left: 4px;
}

#screen-battle .board { width: min(86vw, 340px); }

.place-controls .btn { width: auto; flex: 1; max-width: 150px; }

#over-title { font-size: 28px; text-align: center; }

/* ===== Статус соединения ===== */
#conn-status {
    display: none;
    background: color-mix(in srgb, var(--hit) 25%, var(--panel));
    border: 1px solid var(--hit);
    color: var(--text);
    border-radius: 10px;
    padding: 8px 12px;
    font-size: 13px;
    text-align: center;
    margin-bottom: 12px;
}

#conn-status.show { display: block; }

/* ===== Тост ===== */
#toast {
    position: fixed;
    left: 50%;
    bottom: 28px;
    transform: translateX(-50%) translateY(80px);
    background: var(--panel);
    border: 1px solid var(--cell-border);
    color: var(--text);
    padding: 10px 18px;
    border-radius: 12px;
    font-size: 14px;
    opacity: 0;
    transition: transform .25s, opacity .25s;
    pointer-events: none;
    max-width: 86vw;
    text-align: center;
    z-index: 50;
}

#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }