:root {
    --ink-950: #08100d;
    --ink-900: #0b1411;
    --ink-850: #101b17;
    --ink-800: #16231e;
    --ink-700: #26352e;
    --bone-100: #f1f0e8;
    --bone-300: #c9cbc0;
    --bone-500: #8f988e;
    --acid-400: #b7ef5b;
    --acid-500: #9fd748;
    --danger: #ff735c;
    --line: rgba(241, 240, 232, 0.12);
    --glass: rgba(8, 16, 13, 0.84);
    --shadow: 0 24px 70px rgba(2, 12, 8, 0.44);
    --display: 'Outfit', system-ui, sans-serif;
    --mono: 'IBM Plex Mono', monospace;
}

* {
    scrollbar-color: rgba(183, 239, 91, 0.28) transparent;
}

html {
    color-scheme: dark;
}

body {
    font-family: var(--display);
    color: var(--bone-100);
    background: var(--ink-950);
}

button,
input {
    font: inherit;
}

button:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
    outline: 2px solid var(--acid-400);
    outline-offset: 3px;
}

#menu-screen,
#lobby-screen {
    min-height: 0;
    height: 100dvh;
    overflow-y: auto;
    justify-content: flex-start;
    overscroll-behavior: contain;
    padding: 3rem 1.5rem;
    background:
        linear-gradient(rgba(8, 16, 13, 0.18), rgba(8, 16, 13, 0.34)),
        url('assets/minefield-atmosphere.webp') center / cover no-repeat,
        var(--ink-950);
}

#menu-screen::before,
#lobby-screen::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    opacity: 0.25;
    background-image:
        linear-gradient(var(--line) 1px, transparent 1px),
        linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 3.5rem 3.5rem;
    mask-image: radial-gradient(circle at center, black, transparent 82%);
}

.menu-container,
.lobby-container {
    position: relative;
    width: min(100%, 34rem);
    max-width: none;
    padding: 2.75rem 3rem 3rem;
    color: var(--bone-100);
    text-align: left;
    background: rgba(16, 27, 23, 0.88);
    border: 1px solid var(--line);
    border-radius: 1.5rem;
    box-shadow: var(--shadow), inset 0 1px rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(24px);
    animation: panel-enter 560ms cubic-bezier(.2, .8, .2, 1) both;
    margin-block: auto;
}

.menu-container::after,
.lobby-container::after {
    content: '';
    position: absolute;
    inset: 0.75rem;
    pointer-events: none;
    border: 1px solid rgba(183, 239, 91, 0.08);
    border-radius: 1rem;
}

.brand-lockup {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    margin-bottom: 3.6rem;
    font-family: var(--mono);
    font-size: 0.76rem;
    font-weight: 600;
    letter-spacing: 0.11em;
}

.brand-mark {
    width: 0.72rem;
    aspect-ratio: 1;
    background: var(--acid-400);
    border-radius: 0.15rem;
    box-shadow: 0 0 1.5rem rgba(183, 239, 91, 0.48);
    transform: rotate(45deg);
}

.brand-edition {
    margin-left: auto;
    color: var(--bone-500);
    font-size: 0.64rem;
}

.menu-kicker {
    margin: 0 0 0.75rem;
    color: var(--acid-400);
    font: 600 0.72rem/1 var(--mono);
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.menu-container h1 {
    margin: 0;
    color: var(--bone-100);
    font-size: clamp(2.75rem, 7vw, 4.4rem);
    font-weight: 600;
    line-height: 0.94;
    letter-spacing: -0.055em;
    text-shadow: none;
    text-wrap: balance;
}

.menu-container h1 em {
    color: var(--acid-400);
    font-style: normal;
}

.menu-container h1 span {
    display: block;
}

.menu-container h1 span:last-child {
    margin-left: clamp(1rem, 4vw, 2.75rem);
}

.menu-container h2,
.lobby-container > p {
    max-width: 30rem;
    margin: 1.3rem 0 2.25rem;
    color: var(--bone-500);
    font-size: 0.95rem;
    font-weight: 400;
    line-height: 1.65;
    text-wrap: pretty;
}

.lobby-container {
    text-align: center;
}

.lobby-container .menu-kicker {
    margin-bottom: 0.8rem;
}

.lobby-container h2 {
    margin: 0;
    font-size: clamp(2rem, 6vw, 3.5rem);
    font-weight: 600;
    letter-spacing: -0.045em;
}

.lobby-container > p {
    margin-inline: auto;
}

.input-group {
    margin-bottom: 1rem;
}

.input-group label {
    margin-bottom: 0.55rem;
    color: var(--bone-300);
    font: 500 0.76rem/1 var(--mono);
    letter-spacing: 0.05em;
}

.input-group input[type='text'] {
    padding: 0.95rem 1rem;
    color: var(--bone-100);
    background: var(--ink-950);
    border: 1px solid var(--line);
    border-radius: 0.65rem;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.025);
    caret-color: var(--acid-400);
}

.input-group input[type='text']::placeholder {
    color: #667067;
}

.input-group input[type='text']:focus {
    border-color: var(--acid-400);
}

.room-code-input {
    font-family: var(--mono) !important;
    letter-spacing: 0.22em;
    text-transform: uppercase;
}

.btn {
    min-height: 3.15rem;
    margin-bottom: 0.7rem;
    padding: 0.8rem 1.3rem;
    border-radius: 0.65rem;
    font-size: 0.92rem;
    font-weight: 600;
    transition: transform 180ms ease, background 180ms ease, border-color 180ms ease, color 180ms ease, box-shadow 180ms ease;
}

.btn-primary {
    color: var(--ink-950);
    background: var(--acid-400);
    box-shadow: 0 10px 30px rgba(183, 239, 91, 0.14);
}

.btn-primary:hover {
    background: #c5f576;
    box-shadow: 0 14px 34px rgba(183, 239, 91, 0.2);
    transform: translateY(-2px);
}

.btn-secondary,
.btn-share {
    color: var(--bone-100);
    background: transparent;
    border: 1px solid var(--line);
    box-shadow: none;
}

.btn-secondary:hover,
.btn-share:hover {
    color: var(--acid-400);
    background: rgba(183, 239, 91, 0.06);
    border-color: rgba(183, 239, 91, 0.42);
    box-shadow: none;
    transform: translateY(-2px);
}

.btn:active {
    transform: scale(0.98);
}

.advanced-settings-toggle {
    justify-content: space-between;
    margin: 0.3rem 0;
    padding: 0.75rem 0.2rem;
    color: var(--bone-500);
    font-size: 0.8rem;
}

.advanced-settings-toggle:hover {
    color: var(--acid-400);
}

.advanced-settings {
    padding: 1.1rem 0 0.25rem;
    border-top: 1px solid var(--line);
}

input[type='range'] {
    accent-color: var(--acid-400);
}

.divider {
    margin: 1.5rem 0 1.2rem;
}

.divider::before,
.divider::after {
    background: var(--line);
}

.divider span {
    color: var(--bone-500);
    font: 500 0.68rem/1 var(--mono);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.menu-footnote {
    margin: 1rem 0 0;
    color: #667067;
    text-align: center;
    font-size: 0.7rem;
    letter-spacing: 0.02em;
}

.room-code {
    margin: 1.5rem 0;
    padding: 1.25rem 1rem;
    color: var(--acid-400);
    background: var(--ink-950);
    border: 1px solid var(--line);
    border-radius: 0.8rem;
    font: 600 clamp(2rem, 10vw, 3.25rem)/1 var(--mono);
    letter-spacing: 0.18em;
}

.room-code:hover {
    background: rgba(183, 239, 91, 0.05);
    border-color: rgba(183, 239, 91, 0.35);
}

.room-code.copied {
    background: rgba(183, 239, 91, 0.1);
}

.waiting-status {
    color: var(--bone-300);
    font-size: 0.88rem;
}

.copy-hint {
    display: none;
    margin: 0.2rem 0 0;
    color: var(--acid-400);
    font-size: 0.78rem;
}

.initial-hidden {
    display: none;
}

#game-screen {
    height: 100dvh;
    background: var(--ink-950);
}

#top-bar,
.player-card,
#turn-panel,
#chat-sidebar,
#help-panel {
    background: var(--glass);
    border: 1px solid var(--line);
    box-shadow: 0 14px 40px rgba(2, 12, 8, 0.22), inset 0 1px rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(18px) saturate(120%);
}

#top-bar {
    top: 1rem;
    right: 1rem;
    left: 1rem;
    width: auto;
    max-width: 88rem;
    margin-inline: auto;
    padding: 0.7rem 0.8rem 0.7rem 0.9rem;
    border-radius: 0.85rem;
}

#top-bar .room-info,
#top-bar .game-status {
    gap: 0.7rem;
}

#top-bar .room-badge,
#top-bar .match-stats {
    padding: 0.42rem 0.6rem;
    color: var(--ink-950);
    background: var(--acid-400);
    border-radius: 0.35rem;
    font: 600 0.62rem/1 var(--mono);
    letter-spacing: 0.06em;
}

#top-bar .room-code-display,
#top-bar .spectator-count {
    color: var(--bone-300);
    font: 500 0.72rem/1 var(--mono);
    letter-spacing: 0.06em;
}

#top-bar .btn-copy-link {
    padding: 0.48rem 0.7rem;
    color: var(--bone-300);
    background: transparent;
    border: 1px solid var(--line);
    border-radius: 0.4rem;
    font: 500 0.65rem/1 var(--mono);
}

#top-bar .btn-copy-link:hover {
    color: var(--acid-400);
    border-color: rgba(183, 239, 91, 0.4);
    transform: none;
}

#players-panel {
    top: 5.7rem;
    left: 1rem;
    gap: 0.6rem;
}

.player-card {
    min-width: 11rem;
    padding: 1rem 1.1rem;
    border-radius: 0.8rem;
    border-color: var(--line);
    text-align: left;
}

.player-card.me,
.player-card.opponent {
    border-color: var(--line);
}

.player-card.active {
    border-color: var(--acid-400);
    box-shadow: 0 0 0 1px rgba(183, 239, 91, 0.12), 0 16px 45px rgba(2, 12, 8, 0.34);
    transform: translateX(0.35rem);
}

.player-card .player-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.45rem;
    color: var(--bone-500);
    font: 500 0.62rem/1 var(--mono);
    letter-spacing: 0.09em;
}

.edit-hint {
    color: #59645b;
    font-size: 0.56rem;
    letter-spacing: 0;
}

.player-card .player-name {
    margin-bottom: 0.8rem;
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.player-card .player-stats {
    justify-content: flex-start;
    gap: 1.8rem;
}

.player-card .stat-item {
    align-items: flex-start;
}

.player-card .stat-value {
    color: var(--acid-400);
    font: 600 1rem/1 var(--mono);
}

.player-card .stat-label {
    margin-top: 0.3rem;
    color: var(--bone-500);
    font-size: 0.62rem;
}

.vs-badge {
    color: var(--bone-500);
    background: transparent;
    font: 600 0.62rem/1 var(--mono);
    letter-spacing: 0.12em;
}

#turn-panel {
    top: auto;
    bottom: 1rem;
    left: 1rem;
    min-width: 11rem;
    padding: 0.9rem 1rem;
    border-radius: 0.8rem;
}

.turn-indicator {
    margin-bottom: 0.65rem;
    padding: 0;
    background: transparent !important;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.04em;
}

.turn-indicator.my-turn {
    color: var(--acid-400);
}

.turn-indicator.opponent-turn {
    color: var(--bone-300);
}

.timer-container {
    justify-content: flex-start;
    margin-bottom: 0.65rem;
}

.timer-label {
    color: var(--bone-500);
}

#timer-display {
    color: var(--bone-100);
    font: 600 2.25rem/1 var(--mono);
    font-variant-numeric: tabular-nums;
}

#flag-counter {
    padding: 0.45rem 0.6rem;
    color: var(--bone-300);
    background: rgba(241, 240, 232, 0.06);
    border-radius: 0.35rem;
    font: 500 0.66rem/1 var(--mono);
}

#action-panel {
    bottom: 1rem;
}

#pass-turn-btn {
    min-width: 12rem;
    padding: 0.85rem 1.5rem;
    color: var(--ink-950);
    background: var(--acid-400);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 0.7rem;
    box-shadow: 0 12px 35px rgba(2, 12, 8, 0.38);
    font-size: 0.88rem;
    font-weight: 600;
}

#pass-turn-btn:hover:not(:disabled) {
    background: #c5f576;
    box-shadow: 0 16px 42px rgba(2, 12, 8, 0.45);
}

#pass-turn-btn:disabled {
    color: #727b74;
    background: var(--ink-800);
    border-color: var(--line);
}

#help-panel {
    right: 1rem;
    bottom: 1rem;
    left: auto;
    display: grid;
    grid-template-columns: repeat(2, auto);
    gap: 0.55rem 1rem;
    padding: 0.75rem 0.85rem;
    border-radius: 0.7rem;
    color: var(--bone-500);
    font-size: 0.66rem;
}

#help-panel kbd {
    color: var(--bone-300);
    font-family: var(--mono);
}

#chat-sidebar {
    top: 5.7rem;
    right: 1rem;
    width: min(21rem, calc(100vw - 2rem));
    height: calc(100% - 6.7rem);
    border-radius: 0.9rem;
}

.chat-header {
    padding: 0.9rem 1rem;
    border-color: var(--line);
}

.chat-header h3 {
    color: var(--bone-300);
    font: 600 0.68rem/1 var(--mono);
    letter-spacing: 0.08em;
}

.chat-message {
    padding: 0.7rem 0.8rem;
    color: var(--bone-100);
    background: rgba(241, 240, 232, 0.055);
    border-radius: 0.5rem;
}

.chat-message.player-host,
.chat-message.player-guest,
.chat-message.player-message {
    background: rgba(183, 239, 91, 0.07);
    border-left-color: var(--acid-400);
}

.chat-message .nickname,
.chat-message.player-host .nickname,
.chat-message.player-guest .nickname,
.chat-message.player-message .nickname {
    color: var(--acid-400);
    font-family: var(--mono);
}

.chat-input-container {
    border-color: var(--line);
}

#chat-input {
    color: var(--bone-100);
    background: var(--ink-950);
    border-color: var(--line);
    border-radius: 0.5rem;
}

#chat-input:focus {
    border-color: var(--acid-400);
}

.btn-send-chat {
    color: var(--ink-950);
    background: var(--acid-400);
    border-radius: 0.5rem;
}

.btn-floating-chat {
    top: 5.7rem;
    right: 1rem;
    padding: 0.65rem 0.8rem;
    color: var(--bone-300);
    background: var(--glass);
    border-color: var(--line);
    border-radius: 0.55rem;
    font: 600 0.66rem/1 var(--mono);
}

.unread-badge {
    display: none;
    color: var(--ink-950);
    background: var(--acid-400);
}

#game-over,
.modal-content {
    color: var(--bone-100);
    background: var(--ink-850);
    border: 1px solid var(--line);
    border-radius: 1rem;
    box-shadow: var(--shadow);
}

#game-over .drag-handle {
    color: var(--bone-500);
    background: var(--ink-800);
    border-bottom: 1px solid var(--line);
    border-radius: 1rem 1rem 0 0;
    font: 500 0.64rem/1 var(--mono);
}

#game-result,
.modal-content h2 {
    color: var(--bone-100);
    letter-spacing: -0.035em;
}

.modal-overlay {
    background: rgba(3, 9, 7, 0.76);
    backdrop-filter: blur(8px);
}

.modal-content p,
.waiting-for-opponent {
    color: var(--bone-500);
}

.waiting-for-opponent {
    display: none;
    margin-bottom: 1rem;
}

@keyframes panel-enter {
    from {
        opacity: 0;
        transform: translateY(1rem) scale(0.985);
    }
    to {
        opacity: 1;
        transform: none;
    }
}

@media (max-width: 760px) {
    #menu-screen,
    #lobby-screen {
        justify-content: flex-start;
        padding: 1rem;
    }

    .menu-container,
    .lobby-container {
        margin-block: auto;
        padding: 2rem 1.3rem 2.2rem;
        border-radius: 1.1rem;
    }

    .brand-lockup {
        margin-bottom: 2.75rem;
    }

    .menu-container h1 {
        font-size: clamp(2.25rem, 11.8vw, 3rem);
    }

    .menu-container h1 span:last-child {
        margin-left: clamp(0.65rem, 3vw, 1rem);
        white-space: nowrap;
    }

    #top-bar {
        top: 0.5rem;
        right: 0.5rem;
        left: 0.5rem;
        flex-wrap: wrap;
        row-gap: 0.55rem;
    }

    #top-bar .btn-copy-link {
        display: none;
    }

    #players-panel {
        top: 5.2rem;
        right: 0.5rem;
        left: 0.5rem;
        flex-direction: row;
        justify-content: center;
        transform: none;
    }

    .player-card {
        min-width: 0;
        width: min(42vw, 10rem);
        padding: 0.72rem 0.75rem;
    }

    .player-card.active {
        transform: translateY(0.2rem);
    }

    .player-card .player-stats {
        gap: 1rem;
    }

    #turn-panel {
        bottom: 0.5rem;
        left: 0.5rem;
        min-width: 8.4rem;
        padding: 0.7rem;
        transform: none;
    }

    #timer-display {
        font-size: 1.7rem;
    }

    #action-panel {
        bottom: 0.5rem;
    }

    #pass-turn-btn {
        min-width: 9.5rem;
        padding: 0.72rem 1rem;
        font-size: 0.76rem;
    }

    #help-panel {
        display: none;
    }

    #chat-sidebar {
        top: auto;
        right: 0.5rem;
        bottom: 0.5rem;
        left: 0.5rem;
        width: auto;
        height: min(54dvh, 30rem);
        transform: translateY(0);
    }

    #chat-sidebar.chat-collapsed {
        transform: translateY(calc(100% + 0.75rem));
    }

    .btn-floating-chat {
        top: auto;
        right: 0.5rem;
        bottom: 0.5rem;
    }
}

@media (max-height: 880px) {
    #menu-screen,
    #lobby-screen {
        padding-block: 1rem;
    }

    .menu-container,
    .lobby-container {
        padding: 1.5rem 2rem 1.65rem;
    }

    .brand-lockup {
        margin-bottom: 1.5rem;
    }

    .menu-container h1 {
        font-size: clamp(2.7rem, 7.5vh, 3.8rem);
        line-height: 0.94;
    }

    .menu-container h2,
    .lobby-container > p {
        margin-block: 0.85rem 1rem;
        line-height: 1.45;
    }

    .input-group {
        margin-bottom: 0.65rem;
    }

    .input-group input[type='text'] {
        padding-block: 0.72rem;
    }

    .btn {
        min-height: 2.65rem;
        padding-block: 0.62rem;
    }

    .advanced-settings-toggle {
        padding-block: 0.45rem;
    }

    .divider {
        margin-block: 0.85rem 0.7rem;
    }

    .menu-footnote {
        margin-top: 0.45rem;
    }

    .room-code {
        margin-block: 1rem;
        padding-block: 0.9rem;
    }
}

@media (max-width: 760px) and (max-height: 760px) {
    .menu-container,
    .lobby-container {
        padding: 1.35rem 1.2rem 1.5rem;
    }

    .brand-lockup {
        margin-bottom: 1.35rem;
    }

    .menu-container h1 {
        font-size: clamp(2.15rem, 7vh, 2.75rem);
    }

    .menu-container h2 {
        font-size: 0.86rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}