:root {
    --bg-top: #244b2c;
    --bg-bottom: #0b1710;
    --panel-bg: rgba(5, 18, 11, 0.62);
    --panel-border: rgba(183, 228, 132, 0.22);
    --panel-shadow: 0 18px 38px rgba(2, 10, 5, 0.42);
    --text-main: #ffffff;
    --text-muted: rgba(237, 249, 231, 0.82);
    --gold: #f1d76a;
    --gold-deep: #d9902f;
    --green: #68c36f;
    --green-deep: #2f8d4c;
    --blue-soft: #9bd8be;
    --danger: #ff6b6b;
    --purple: #8e6d3b;
    --purple-soft: #c6a96a;
    --radius-xl: 18px;
    --radius-lg: 14px;
    --radius-md: 11px;
    --radius-sm: 8px;
    --transition: 180ms ease;
}

body[data-theme="midnight"] {
    --bg-top: #102918;
    --bg-bottom: #07110b;
    --panel-bg: rgba(3, 13, 8, 0.68);
    --panel-border: rgba(120, 186, 126, 0.2);
    --gold: #c9e78f;
    --gold-deep: #7fb06b;
    --green: #4fa867;
    --green-deep: #2d6f44;
    --text-muted: rgba(225, 244, 221, 0.82);
}

body[data-theme="sunset"] {
    --bg-top: #455f24;
    --bg-bottom: #2d2110;
    --panel-bg: rgba(25, 20, 8, 0.58);
    --panel-border: rgba(248, 203, 111, 0.22);
    --gold: #ffd27f;
    --gold-deep: #d47f35;
    --green: #88b957;
    --green-deep: #5e7f32;
    --text-muted: rgba(255, 242, 220, 0.84);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: Arial, sans-serif;
    color: var(--text-main);
    background:
        radial-gradient(ellipse at 50% -10%, rgba(241, 215, 106, 0.22), transparent 42%),
        radial-gradient(ellipse at 18% 18%, rgba(104, 195, 111, 0.26), transparent 34%),
        linear-gradient(145deg, var(--bg-top), #17351f 46%, var(--bg-bottom));
    overflow-x: hidden;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image:
        radial-gradient(circle at 10% 20%, rgba(241, 215, 106, 0.24) 0 1px, transparent 1px),
        radial-gradient(circle at 24% 68%, rgba(170, 226, 130, 0.2) 0 1px, transparent 1px),
        radial-gradient(circle at 78% 12%, rgba(219, 255, 194, 0.14) 0 1px, transparent 1px),
        radial-gradient(circle at 84% 72%, rgba(117, 216, 142, 0.2) 0 1px, transparent 1px);
    background-size: 170px 170px, 230px 230px, 210px 210px, 280px 280px;
    opacity: 0.82;
    animation: pollen-pan 34s linear infinite;
}

body::after {
    content: "";
    position: fixed;
    inset: -12vh -10vw auto;
    z-index: 0;
    height: 78vh;
    pointer-events: none;
    background:
        linear-gradient(120deg, rgba(215, 240, 142, 0.11), transparent 34%, rgba(86, 171, 96, 0.11)),
        repeating-linear-gradient(110deg, rgba(255, 255, 255, 0.05) 0 2px, transparent 2px 86px);
    filter: blur(16px);
    opacity: 0.72;
}

body.app-loading {
    overflow: hidden;
}

button,
input {
    font: inherit;
}

button {
    border: 0;
}

.loading-screen {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: grid;
    place-items: center;
    padding: 24px;
    background:
        linear-gradient(180deg, rgba(229, 211, 118, 0.12), transparent 28%),
        linear-gradient(135deg, rgba(9, 27, 14, 0.96), rgba(35, 76, 42, 0.96));
    backdrop-filter: blur(8px);
}

.loading-card {
    width: min(100%, 420px);
    padding: 28px;
    text-align: center;
    border-radius: 24px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 215, 0, 0.24);
    box-shadow: 0 16px 30px rgba(0, 0, 0, 0.34);
}

.loading-card h2 {
    margin: 0 0 10px;
    color: var(--gold);
}

.loading-card p {
    margin: 0;
    line-height: 1.6;
    color: var(--text-muted);
}

.loading-stars {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 18px;
}

.loading-stars span {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--gold);
    box-shadow: 0 0 12px rgba(255, 215, 0, 0.5);
    animation: bounce 1.1s infinite ease-in-out;
}

.loading-stars span:nth-child(2) {
    animation-delay: 0.15s;
}

.loading-stars span:nth-child(3) {
    animation-delay: 0.3s;
}

.page-glow {
    position: fixed;
    inset: auto;
    width: 32rem;
    height: 24rem;
    border-radius: 38% 62% 58% 42%;
    filter: blur(54px);
    opacity: 0.18;
    pointer-events: none;
    z-index: 0;
}

.page-glow-left {
    top: -10rem;
    left: -10rem;
    background: linear-gradient(135deg, rgba(241, 215, 106, 0.34), rgba(89, 162, 78, 0.24));
    transform: rotate(-18deg);
}

.page-glow-right {
    right: -10rem;
    bottom: -12rem;
    background: linear-gradient(145deg, rgba(57, 109, 54, 0.32), rgba(4, 13, 8, 0.22));
    transform: rotate(20deg);
}

.wildlife-atmosphere {
    position: fixed;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

.canopy-band {
    position: absolute;
    left: -8vw;
    right: -8vw;
    height: 26vh;
    background:
        radial-gradient(ellipse at 8% 50%, rgba(16, 52, 24, 0.72) 0 18%, transparent 19%),
        radial-gradient(ellipse at 20% 32%, rgba(45, 93, 34, 0.58) 0 16%, transparent 17%),
        radial-gradient(ellipse at 36% 56%, rgba(14, 61, 32, 0.68) 0 20%, transparent 21%),
        radial-gradient(ellipse at 54% 40%, rgba(66, 105, 42, 0.46) 0 17%, transparent 18%),
        radial-gradient(ellipse at 72% 62%, rgba(25, 78, 36, 0.68) 0 19%, transparent 20%),
        radial-gradient(ellipse at 90% 42%, rgba(79, 119, 44, 0.48) 0 16%, transparent 17%);
    filter: blur(1px);
    opacity: 0.66;
}

.canopy-band-top {
    top: -8vh;
}

.canopy-band-bottom {
    bottom: -13vh;
    transform: rotate(180deg) scaleX(1.08);
    opacity: 0.38;
}

.leaf-drift,
.firefly-field {
    position: absolute;
    inset: 0;
}

.leaf-drift span {
    --leaf-size: 18px;
    --leaf-delay: 0s;
    --leaf-duration: 17s;
    --leaf-left: 0%;
    position: absolute;
    top: -12vh;
    left: var(--leaf-left);
    width: var(--leaf-size);
    height: calc(var(--leaf-size) * 0.56);
    border-radius: 100% 0 100% 0;
    background: linear-gradient(135deg, rgba(182, 219, 105, 0.72), rgba(55, 132, 63, 0.7));
    box-shadow: inset -4px -2px 5px rgba(8, 32, 12, 0.28);
    transform-origin: 50% 50%;
    animation: leaf-fall var(--leaf-duration) linear infinite;
    animation-delay: var(--leaf-delay);
    opacity: 0.78;
}

.leaf-drift span:nth-child(1) {
    --leaf-left: 6%;
    --leaf-size: 16px;
    --leaf-delay: -2s;
    --leaf-duration: 19s;
}

.leaf-drift span:nth-child(2) {
    --leaf-left: 18%;
    --leaf-size: 22px;
    --leaf-delay: -11s;
    --leaf-duration: 23s;
}

.leaf-drift span:nth-child(3) {
    --leaf-left: 31%;
    --leaf-size: 14px;
    --leaf-delay: -5s;
    --leaf-duration: 16s;
}

.leaf-drift span:nth-child(4) {
    --leaf-left: 44%;
    --leaf-size: 20px;
    --leaf-delay: -14s;
    --leaf-duration: 22s;
}

.leaf-drift span:nth-child(5) {
    --leaf-left: 58%;
    --leaf-size: 15px;
    --leaf-delay: -8s;
    --leaf-duration: 18s;
}

.leaf-drift span:nth-child(6) {
    --leaf-left: 72%;
    --leaf-size: 24px;
    --leaf-delay: -16s;
    --leaf-duration: 25s;
}

.leaf-drift span:nth-child(7) {
    --leaf-left: 84%;
    --leaf-size: 17px;
    --leaf-delay: -4s;
    --leaf-duration: 20s;
}

.leaf-drift span:nth-child(8) {
    --leaf-left: 94%;
    --leaf-size: 21px;
    --leaf-delay: -12s;
    --leaf-duration: 24s;
}

.firefly-field span {
    --spark-left: 50%;
    --spark-top: 50%;
    --spark-delay: 0s;
    --spark-duration: 4s;
    position: absolute;
    left: var(--spark-left);
    top: var(--spark-top);
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: rgba(247, 239, 149, 0.96);
    box-shadow:
        0 0 10px rgba(247, 239, 149, 0.68),
        0 0 22px rgba(119, 214, 110, 0.28);
    animation: firefly-glow var(--spark-duration) ease-in-out infinite;
    animation-delay: var(--spark-delay);
}

.firefly-field span:nth-child(1) {
    --spark-left: 8%;
    --spark-top: 26%;
    --spark-delay: -1s;
}

.firefly-field span:nth-child(2) {
    --spark-left: 18%;
    --spark-top: 72%;
    --spark-delay: -3s;
    --spark-duration: 5.5s;
}

.firefly-field span:nth-child(3) {
    --spark-left: 28%;
    --spark-top: 42%;
    --spark-delay: -2.2s;
    --spark-duration: 4.8s;
}

.firefly-field span:nth-child(4) {
    --spark-left: 38%;
    --spark-top: 18%;
    --spark-delay: -4.5s;
    --spark-duration: 6s;
}

.firefly-field span:nth-child(5) {
    --spark-left: 49%;
    --spark-top: 81%;
    --spark-delay: -0.5s;
}

.firefly-field span:nth-child(6) {
    --spark-left: 57%;
    --spark-top: 34%;
    --spark-delay: -2.8s;
    --spark-duration: 5.2s;
}

.firefly-field span:nth-child(7) {
    --spark-left: 67%;
    --spark-top: 66%;
    --spark-delay: -5s;
}

.firefly-field span:nth-child(8) {
    --spark-left: 76%;
    --spark-top: 22%;
    --spark-delay: -1.8s;
    --spark-duration: 4.6s;
}

.firefly-field span:nth-child(9) {
    --spark-left: 84%;
    --spark-top: 55%;
    --spark-delay: -3.6s;
    --spark-duration: 5.8s;
}

.firefly-field span:nth-child(10) {
    --spark-left: 92%;
    --spark-top: 78%;
    --spark-delay: -2.4s;
}

.firefly-field span:nth-child(11) {
    --spark-left: 12%;
    --spark-top: 52%;
    --spark-delay: -4s;
    --spark-duration: 6.2s;
}

.firefly-field span:nth-child(12) {
    --spark-left: 88%;
    --spark-top: 35%;
    --spark-delay: -0.8s;
    --spark-duration: 5.1s;
}

.app-shell {
    position: relative;
    z-index: 2;
    width: min(1420px, calc(100% - 28px));
    margin: 18px auto 34px;
}

.app-shell::before {
    content: "";
    position: absolute;
    inset: 78px -20px -24px;
    pointer-events: none;
    border-radius: 28px;
    background:
        linear-gradient(125deg, rgba(184, 228, 132, 0.12), transparent 26%, rgba(241, 215, 106, 0.07) 70%, transparent 100%),
        repeating-linear-gradient(100deg, rgba(255, 255, 255, 0.04) 0 2px, transparent 2px 74px);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
    opacity: 0.8;
    z-index: 0;
}

.panel {
    position: relative;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--panel-shadow);
    backdrop-filter: blur(8px);
    isolation: isolate;
}

.panel::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    pointer-events: none;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.07), transparent 26%),
        linear-gradient(135deg, transparent 58%, rgba(183, 228, 132, 0.08));
    z-index: 0;
}

.panel > * {
    position: relative;
    z-index: 1;
}

.hero {
    display: flex;
    justify-content: space-between;
    gap: 28px;
    padding: 26px 30px;
    animation: rise-in 420ms ease;
}

.hero-copy {
    flex: 1;
}

.hero-copy h1 {
    margin: 0;
    font-size: clamp(2.4rem, 5vw, 4rem);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.45);
    background: linear-gradient(45deg, var(--gold), var(--gold-deep));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text {
    max-width: 52rem;
    margin: 14px 0 0;
    line-height: 1.65;
    color: var(--text-muted);
}

.hero-guide-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin-top: 20px;
}

.guide-card {
    padding: 14px 16px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 215, 0, 0.12);
}

.guide-card h3 {
    margin: 0 0 8px;
    color: var(--gold);
    font-size: 1rem;
}

.guide-card p {
    margin: 0;
    line-height: 1.55;
    color: var(--text-muted);
}

.hero-actions {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: center;
    gap: 12px;
    min-width: 200px;
}

.eyebrow {
    margin: 0 0 8px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-size: 0.72rem;
    color: rgba(255, 255, 255, 0.72);
}

.status-banner {
    margin: 18px 0 0;
    padding: 14px 18px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 215, 0, 0.24);
    background: rgba(255, 215, 0, 0.12);
    color: #fff4c6;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.7fr) minmax(330px, 0.95fr);
    grid-template-areas:
        "play hub"
        "ad hub";
    gap: 22px;
    margin-top: 22px;
    align-items: start;
    overflow: visible;
}

.play-panel {
    grid-area: play;
    position: relative;
    z-index: 20;
    padding: 22px 22px 20px;
}

.panel-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
}

.panel-heading h2 {
    margin: 0;
    font-size: 1.48rem;
}

.panel-chip-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.stat-chip {
    min-width: 84px;
    padding: 10px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    text-align: center;
}

.stat-chip strong {
    display: block;
    font-size: 1.03rem;
}

.stat-label {
    display: block;
    margin-bottom: 4px;
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.11em;
    color: rgba(255, 255, 255, 0.72);
}

.experience-toolbar {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: center;
    margin-bottom: 16px;
    position: relative;
    z-index: 40;
}

.welcome-inline {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    padding: 12px 14px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 215, 0, 0.12);
    color: var(--text-muted);
}

.welcome-inline strong {
    color: var(--gold);
}

.screen-controls {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: flex-end;
    position: relative;
}

.view-mode-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.display-menu-wrap {
    position: relative;
    z-index: 80;
}

.display-menu-button {
    min-width: 180px;
}

.display-menu-panel {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    z-index: 140;
    width: min(330px, calc(100vw - 30px));
    padding: 14px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.94);
    box-shadow: 0 18px 30px rgba(0, 0, 0, 0.34);
}

.display-menu-section + .display-menu-section {
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.display-menu-label {
    display: block;
    margin-bottom: 10px;
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: rgba(255, 255, 255, 0.72);
}

.game-stage {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    overflow: hidden;
    border: 3px solid var(--gold);
    border-radius: 12px;
    background: #000;
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.26);
}

#playPanel[data-view-mode="focus"] .game-stage {
    max-width: 1040px;
}

#playPanel[data-view-mode="wide"] .game-stage {
    max-width: none;
}

#gameCanvas {
    display: block;
    width: 100%;
    height: auto;
    background: #000;
}

.game-screen {
    position: absolute;
    inset: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    padding: 28px;
    text-align: center;
    border-radius: var(--radius-lg);
    background: rgba(0, 0, 0, 0.9);
    border: 2px solid rgba(255, 215, 0, 0.42);
    animation: rise-in 220ms ease;
}

.game-screen h3 {
    margin: 0;
    font-size: 2rem;
    color: var(--gold);
}

.game-screen p {
    margin: 0;
    max-width: 32rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.9);
}

.start-guide-list {
    margin: 0;
    padding-left: 18px;
    text-align: left;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.88);
}

.key-hint {
    font-size: 0.92rem;
    color: rgba(255, 255, 255, 0.78);
}

.button,
.tab-button,
.view-mode-button,
.theme-option,
.snake-color-option,
.side-tab-button {
    border-radius: 999px;
    cursor: pointer;
    transition:
        transform var(--transition),
        background var(--transition),
        border-color var(--transition),
        box-shadow var(--transition),
        opacity var(--transition);
}

.button,
.tab-button,
.view-mode-button,
.theme-option,
.snake-color-option,
.side-tab-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
    isolation: isolate;
    box-shadow:
        0 8px 18px rgba(0, 0, 0, 0.24),
        inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.button,
.view-mode-button,
.theme-option,
.snake-color-option {
    display: inline-flex;
    min-height: 46px;
    padding: 0 18px;
    color: white;
    font-weight: 700;
}

.button:hover,
.tab-button:hover,
.view-mode-button:hover,
.theme-option:hover,
.snake-color-option:hover,
.side-tab-button:hover {
    transform: translateY(-1px);
}

.button::before,
.tab-button::before,
.view-mode-button::before,
.theme-option::before,
.snake-color-option::before,
.side-tab-button::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(120deg, rgba(255, 255, 255, 0.28), transparent 26%, transparent 72%, rgba(255, 255, 255, 0.1));
    transform: translateX(-120%);
    transition: transform 420ms ease;
    pointer-events: none;
}

.button::after,
.tab-button::after,
.view-mode-button::after,
.theme-option::after,
.snake-color-option::after,
.side-tab-button::after {
    content: "";
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    box-shadow: 0 0 0 0 var(--button-glow, rgba(255, 255, 255, 0.18));
    opacity: 0;
    transition: opacity var(--transition), box-shadow var(--transition);
    pointer-events: none;
}

.button:hover::before,
.button:focus-visible::before,
.tab-button:hover::before,
.tab-button:focus-visible::before,
.view-mode-button:hover::before,
.view-mode-button:focus-visible::before,
.theme-option:hover::before,
.theme-option:focus-visible::before,
.snake-color-option:hover::before,
.snake-color-option:focus-visible::before,
.side-tab-button:hover::before,
.side-tab-button:focus-visible::before {
    transform: translateX(120%);
}

.button:hover::after,
.button:focus-visible::after,
.tab-button:hover::after,
.tab-button:focus-visible::after,
.view-mode-button:hover::after,
.view-mode-button:focus-visible::after,
.theme-option:hover::after,
.theme-option:focus-visible::after,
.snake-color-option:hover::after,
.snake-color-option:focus-visible::after,
.side-tab-button:hover::after,
.side-tab-button:focus-visible::after {
    opacity: 1;
    box-shadow:
        0 0 0 1px var(--button-glow, rgba(255, 255, 255, 0.18)),
        0 0 26px 3px var(--button-glow, rgba(255, 255, 255, 0.18));
}

.button:focus-visible,
.tab-button:focus-visible,
.view-mode-button:focus-visible,
.theme-option:focus-visible,
.snake-color-option:focus-visible,
.side-tab-button:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.28);
    outline-offset: 2px;
}

.button:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
}

.button-primary {
    background: linear-gradient(45deg, var(--green), var(--green-deep));
    --button-glow: rgba(76, 175, 80, 0.42);
    box-shadow:
        0 10px 24px rgba(0, 0, 0, 0.26),
        0 0 16px rgba(76, 175, 80, 0.2);
}

.button-secondary,
.tab-button,
.side-tab-button,
.view-mode-button,
.theme-option,
.snake-color-option {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    --button-glow: rgba(255, 255, 255, 0.18);
}

.button-accent {
    background: linear-gradient(45deg, var(--gold), var(--gold-deep));
    color: #000;
    --button-glow: rgba(255, 215, 0, 0.42);
    box-shadow:
        0 10px 24px rgba(0, 0, 0, 0.24),
        0 0 16px rgba(255, 215, 0, 0.22);
}

.button-danger {
    background: linear-gradient(45deg, var(--danger), #d64545);
    --button-glow: rgba(255, 107, 107, 0.36);
    box-shadow:
        0 10px 24px rgba(0, 0, 0, 0.24),
        0 0 16px rgba(255, 107, 107, 0.18);
}

.view-mode-button.is-active {
    border-color: rgba(255, 215, 0, 0.34);
    background: rgba(255, 215, 0, 0.14);
    color: #fff1b5;
}

.tab-button.is-active,
.view-mode-button.is-active,
.theme-option.is-active,
.snake-color-option.is-active,
.side-tab-button.is-active {
    --button-glow: rgba(255, 215, 0, 0.36);
    box-shadow:
        0 12px 24px rgba(0, 0, 0, 0.24),
        0 0 18px rgba(255, 215, 0, 0.16),
        inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.theme-option-row,
.snake-color-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

.theme-option,
.snake-color-option {
    min-height: 40px;
    padding: 0 12px;
    justify-content: flex-start;
}

.theme-option.is-active,
.snake-color-option.is-active {
    border-color: rgba(255, 215, 0, 0.34);
    background: rgba(255, 215, 0, 0.14);
    color: #fff1b5;
}

.snake-color-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex: 0 0 auto;
}

.snake-color-dot-classic {
    background: linear-gradient(45deg, #90ee90, #228b22);
}

.snake-color-dot-gold {
    background: linear-gradient(45deg, #ffe082, #ffb300);
}

.snake-color-dot-coral {
    background: linear-gradient(45deg, #ffb199, #ff6f61);
}

.snake-color-dot-ice {
    background: linear-gradient(45deg, #d9f0ff, #60a5fa);
}

.display-action-button {
    width: 100%;
}

.button-row,
.button-column,
.control-bar {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.button-column {
    flex-direction: column;
}

.control-bar {
    justify-content: center;
    margin-top: 18px;
}

.play-footer {
    display: grid;
    grid-template-columns: 1.05fr 1.35fr 1fr;
    gap: 16px;
    margin-top: 18px;
}

.play-footer h3,
.leaderboard-columns h3,
.profile-card h3 {
    margin: 0 0 8px;
}

.play-footer p,
.muted-text,
.field-help {
    color: var(--text-muted);
    line-height: 1.55;
}

.footer-card {
    min-height: 100%;
    padding: 16px 18px;
    border-radius: var(--radius-lg);
    background:
        linear-gradient(160deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03)),
        rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.footer-card-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
}

.speed-status-chip {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 0 10px;
    border-radius: 999px;
    background: rgba(255, 215, 0, 0.12);
    border: 1px solid rgba(255, 215, 0, 0.22);
    color: #fff1b5;
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.sync-meta {
    display: grid;
    gap: 8px;
}

.sync-meta span {
    display: block;
}

.speed-panel p {
    margin: 0 0 12px;
}

.speed-stat-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-bottom: 12px;
}

.speed-stat-chip {
    padding: 12px 14px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.speed-stat-chip strong {
    display: block;
    margin-top: 6px;
    font-size: 1rem;
}

#liveSpeedValue[data-pace-state="cruise"] {
    color: #dff4ff;
}

#liveSpeedValue[data-pace-state="classic"] {
    color: #fff1b5;
}

#liveSpeedValue[data-pace-state="swift"] {
    color: #9dffda;
}

#liveSpeedValue[data-pace-state="blaze"] {
    color: #ffbb8b;
}

.speed-option-row {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
}

.speed-option-button {
    min-height: 42px;
    padding: 0 12px;
}

.speed-option-button.is-active {
    border-color: rgba(255, 215, 0, 0.34);
    background: rgba(255, 215, 0, 0.14);
    color: #fff1b5;
    --button-glow: rgba(255, 215, 0, 0.34);
}

.side-hub {
    grid-area: hub;
    display: flex;
    flex-direction: column;
    padding: 22px;
    min-height: 0;
    height: 100%;
    align-self: stretch;
    position: relative;
    z-index: 5;
    overflow: hidden;
}

.side-tab-row {
    flex: 0 0 auto;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    margin-bottom: 18px;
}

.side-tab-button {
    min-height: 40px;
    padding: 0 14px;
    color: white;
    font-weight: 700;
    transition: transform var(--transition), background var(--transition), border-color var(--transition);
}

.side-tab-button:hover {
    transform: translateY(-1px);
}

.side-tab-button.is-active {
    background: rgba(255, 215, 0, 0.14);
    border-color: rgba(255, 215, 0, 0.28);
    color: #fff1b5;
}

.side-tab-panel {
    flex: 1 1 auto;
    min-height: 0;
    overflow: auto;
    overscroll-behavior: contain;
    scrollbar-gutter: stable;
    padding-right: 6px;
}

.side-tab-panel::-webkit-scrollbar {
    width: 10px;
}

.side-tab-panel::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.04);
    border-radius: 999px;
}

.side-tab-panel::-webkit-scrollbar-thumb {
    background: rgba(255, 215, 0, 0.24);
    border-radius: 999px;
}

.side-tab-panel::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 215, 0, 0.34);
}

.profile-panel,
.achievements-panel,
.leaderboard-panel {
    padding: 0;
}

.side-panel-heading {
    margin-bottom: 16px;
}

.mode-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-height: 34px;
    padding: 0 12px;
    border-radius: 999px;
    background: rgba(255, 215, 0, 0.12);
    border: 1px solid rgba(255, 215, 0, 0.22);
    color: #fff1b5;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.profile-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 18px;
    margin-bottom: 18px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.avatar-badge {
    display: grid;
    place-items: center;
    width: 62px;
    height: 62px;
    border-radius: 18px;
    background: linear-gradient(45deg, rgba(255, 215, 0, 0.26), rgba(255, 165, 0, 0.28));
    font-size: 1.6rem;
    font-weight: 800;
    color: #fff8de;
}

.profile-stats {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 18px;
}

.side-hub .achievement-grid,
.side-hub .leaderboard-columns {
    grid-template-columns: 1fr;
}

.metric-card,
.leaderboard-item,
.achievement-card,
.progress-card {
    background: rgba(255, 255, 255, 0.05);
}

.metric-card {
    padding: 14px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.metric-card strong {
    display: block;
    margin-top: 6px;
    font-size: 1.15rem;
}

.inline-form,
.auth-form {
    display: grid;
    gap: 10px;
}

.inline-form {
    margin-bottom: 18px;
}

.inline-form-row {
    display: flex;
    gap: 10px;
}

input {
    width: 100%;
    min-height: 46px;
    padding: 0 14px;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(0, 0, 0, 0.35);
    color: var(--text-main);
    outline: none;
}

input:focus {
    border-color: rgba(255, 215, 0, 0.62);
    box-shadow: 0 0 0 4px rgba(255, 215, 0, 0.12);
}

.achievement-summary {
    margin-bottom: 18px;
}

.achievements-panel {
    display: flex;
    flex-direction: column;
    gap: 16px;
    min-height: 0;
    overflow: hidden;
}

.achievements-panel .achievement-summary {
    flex: 0 0 auto;
    margin-bottom: 0;
}

.progress-card {
    padding: 16px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 215, 0, 0.18);
}

.progress-card h3 {
    margin: 0 0 8px;
    color: var(--gold);
}

.progress-bar {
    width: 100%;
    height: 10px;
    margin-top: 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--gold), var(--gold-deep));
}

.achievement-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    flex: 1 1 auto;
    min-height: 0;
    overflow: auto;
    padding-right: 6px;
    align-content: start;
    overscroll-behavior: contain;
    scrollbar-gutter: stable;
}

.achievement-grid::-webkit-scrollbar {
    width: 10px;
}

.achievement-grid::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.04);
    border-radius: 999px;
}

.achievement-grid::-webkit-scrollbar-thumb {
    background: rgba(255, 215, 0, 0.24);
    border-radius: 999px;
}

.achievement-grid::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 215, 0, 0.34);
}

.achievement-card {
    --badge-halo: radial-gradient(circle, rgba(255, 215, 0, 0.42), rgba(255, 215, 0, 0.14) 48%, transparent 72%);
    --badge-ribbon: linear-gradient(180deg, rgba(255, 255, 255, 0.18), rgba(28, 31, 69, 0.92));
    --badge-medallion: linear-gradient(145deg, rgba(255, 255, 255, 0.34), rgba(255, 215, 0, 0.22) 45%, rgba(255, 255, 255, 0.1));
    --badge-core: radial-gradient(circle at 30% 28%, rgba(255, 255, 255, 0.22), rgba(0, 0, 0, 0.34) 68%);
    --badge-core-shape: circle(50% at 50% 50%);
    --badge-core-rotate: 0deg;
    --badge-pattern:
        radial-gradient(circle at 20% 26%, rgba(255, 255, 255, 0.95) 0 2px, transparent 2.5px),
        radial-gradient(circle at 78% 24%, rgba(255, 215, 0, 0.88) 0 2px, transparent 2.6px),
        radial-gradient(circle at 26% 74%, rgba(255, 255, 255, 0.72) 0 1.6px, transparent 2.1px),
        radial-gradient(circle at 76% 76%, rgba(255, 255, 255, 0.58) 0 1.4px, transparent 2px);
    position: relative;
    display: grid;
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 14px;
    align-items: center;
    min-height: 132px;
    padding: 16px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
    isolation: isolate;
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.06),
        0 10px 18px rgba(0, 0, 0, 0.16);
}

.achievement-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 18% 22%, rgba(255, 255, 255, 0.14) 0 2px, transparent 2.4px),
        radial-gradient(circle at 82% 18%, rgba(255, 215, 0, 0.18) 0 2px, transparent 2.5px),
        radial-gradient(circle at 78% 76%, rgba(255, 255, 255, 0.1) 0 1.8px, transparent 2.2px),
        linear-gradient(135deg, rgba(255, 255, 255, 0.04), transparent 42%);
    opacity: 0.8;
    pointer-events: none;
}

.achievement-card::after {
    content: "";
    position: absolute;
    inset: 1px;
    border-radius: inherit;
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.06), transparent 45%, rgba(255, 215, 0, 0.05));
    pointer-events: none;
}

.achievement-card.is-unlocked {
    border-color: rgba(255, 215, 0, 0.24);
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.14), rgba(255, 255, 255, 0.05));
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.08),
        0 14px 26px rgba(0, 0, 0, 0.22),
        0 0 20px rgba(255, 215, 0, 0.08);
}

.achievement-card.is-locked {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02));
}

.achievement-badge-art,
.achievement-copy {
    position: relative;
    z-index: 1;
}

.achievement-badge-art {
    position: relative;
    width: 96px;
    height: 96px;
    display: grid;
    place-items: center;
}

.achievement-badge-art::before {
    content: "";
    position: absolute;
    inset: 14px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.14);
    box-shadow:
        0 0 0 6px rgba(255, 255, 255, 0.03),
        inset 0 0 16px rgba(255, 255, 255, 0.06);
}

.achievement-badge-art::after {
    content: "";
    position: absolute;
    inset: 8px;
    border-radius: 50%;
    background: var(--badge-pattern);
    opacity: 0.9;
}

.badge-halo {
    position: absolute;
    inset: 6px;
    border-radius: 50%;
    background: var(--badge-halo);
    filter: blur(10px);
}

.badge-ribbon {
    position: absolute;
    bottom: 10px;
    width: 20px;
    height: 30px;
    border-radius: 6px 6px 10px 10px;
    background: var(--badge-ribbon);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.24);
}

.badge-ribbon-left {
    left: 18px;
    transform: rotate(-8deg);
}

.badge-ribbon-right {
    right: 18px;
    transform: rotate(8deg);
}

.badge-medallion {
    position: relative;
    width: 74px;
    height: 74px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    border: 3px solid rgba(255, 255, 255, 0.22);
    background: var(--badge-medallion);
    box-shadow:
        inset 0 1px 10px rgba(255, 255, 255, 0.18),
        0 10px 18px rgba(0, 0, 0, 0.24);
}

.badge-medallion::before {
    content: "";
    position: absolute;
    inset: 7px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.26);
    opacity: 0.9;
}

.badge-medallion::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.28), transparent 42%, rgba(255, 255, 255, 0.04));
    mix-blend-mode: screen;
}

.badge-medallion-inner {
    position: relative;
    z-index: 1;
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--badge-core);
    border: 1px solid rgba(255, 255, 255, 0.12);
    clip-path: var(--badge-core-shape);
    color: #fff8dc;
    font-size: 0.84rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.35);
    transform: rotate(var(--badge-core-rotate));
    box-shadow:
        inset 0 1px 8px rgba(255, 255, 255, 0.1),
        0 4px 10px rgba(0, 0, 0, 0.16);
}

.achievement-copy {
    min-width: 0;
}

.achievement-tier {
    display: inline-flex;
    margin-bottom: 6px;
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--badge-ribbon);
    border: 1px solid transparent;
    font-size: 0.74rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(12, 22, 38, 0.88);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.achievement-target {
    display: block;
    margin-bottom: 6px;
    font-size: 1.06rem;
    font-weight: 800;
}

.achievement-progress-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-top: 10px;
}

.achievement-status {
    display: inline-flex;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.achievement-card.is-unlocked .achievement-status {
    background: rgba(255, 215, 0, 0.18);
    color: #fff1b5;
}

.achievement-progress-value {
    font-size: 0.82rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.8);
}

.mini-progress {
    width: 100%;
    height: 8px;
    margin-top: 10px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    overflow: hidden;
}

.mini-progress-fill {
    height: 100%;
    border-radius: inherit;
    background: var(--badge-ribbon);
    box-shadow: 0 0 12px rgba(255, 215, 0, 0.28);
}

.achievement-card.is-unlocked .badge-halo {
    animation: badge-pulse 2.8s ease-in-out infinite;
}

.achievement-card.is-unlocked .badge-medallion {
    animation: badge-float 3.2s ease-in-out infinite;
}

.achievement-card.is-locked .achievement-badge-art {
    filter: saturate(0.72) brightness(0.92);
}

.achievement-card.is-locked .badge-halo {
    opacity: 0.48;
}

.achievement-card.tier-spark {
    border-color: rgba(139, 196, 255, 0.16);
}

.achievement-card.tier-orbit {
    border-color: rgba(125, 236, 186, 0.16);
}

.achievement-card.tier-stellar {
    border-color: rgba(255, 221, 124, 0.18);
}

.achievement-card.tier-cosmic {
    border-color: rgba(214, 170, 255, 0.18);
}

.achievement-card.tier-cosmic .badge-halo {
    filter: blur(12px);
}

.leaderboard-columns {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-top: 18px;
}

.leaderboard-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 10px;
}

.leaderboard-item {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 12px;
    align-items: center;
    padding: 12px 14px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.leaderboard-item.is-self {
    border-color: rgba(255, 215, 0, 0.22);
    background: rgba(255, 215, 0, 0.08);
}

.leaderboard-rank {
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    border-radius: 12px;
    background: rgba(255, 215, 0, 0.16);
    color: #ffe5aa;
    font-weight: 800;
}

.ad-panel {
    grid-area: ad;
    display: flex;
    flex-direction: column;
    padding: 18px;
    align-self: stretch;
    min-height: 100%;
}

.ad-copy {
    margin: 0 0 14px;
}

.ad-frame {
    flex: 1 1 auto;
    display: flex;
    align-items: stretch;
    min-height: 140px;
    padding: 10px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.ad-panel iframe {
    flex: 1 1 auto;
    width: 100%;
    min-height: 90px;
    border: 0;
    border-radius: var(--radius-lg);
    background: transparent;
}

.orientation-warning {
    position: fixed;
    inset: 0;
    z-index: 80;
    display: grid;
    place-items: center;
    padding: 24px;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(12px);
}

.orientation-card,
.modal-card {
    width: min(100%, 460px);
    padding: 28px;
    border-radius: var(--radius-xl);
    background: rgba(0, 0, 0, 0.92);
    border: 1px solid rgba(255, 215, 0, 0.22);
    box-shadow: var(--panel-shadow);
}

.orientation-card h2,
.modal-card h2 {
    margin: 0 0 10px;
    color: var(--gold);
}

.modal {
    position: fixed;
    inset: 0;
    z-index: 90;
    display: grid;
    place-items: center;
    padding: 24px;
}

.modal-scrim {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.62);
    backdrop-filter: blur(10px);
}

.modal-card {
    position: relative;
    width: min(100%, 520px);
}

.modal-close {
    position: absolute;
    top: 14px;
    right: 16px;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    color: white;
    font-size: 1.4rem;
}

.tab-row {
    display: flex;
    gap: 10px;
    margin: 18px 0 14px;
    flex-wrap: wrap;
}

.tab-button {
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.06);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.tab-button.is-active {
    background: rgba(255, 215, 0, 0.14);
    border-color: rgba(255, 215, 0, 0.28);
}

.auth-feedback {
    margin-top: 0;
}

.auth-feedback.is-warning {
    color: #ffd0c4;
}

.auth-feedback.is-success {
    color: #dcffe0;
}

.toast-region {
    position: fixed;
    right: 16px;
    bottom: 16px;
    z-index: 95;
    display: grid;
    gap: 10px;
    width: min(320px, calc(100% - 32px));
}

.toast {
    padding: 14px 16px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 215, 0, 0.18);
    background: rgba(0, 0, 0, 0.92);
    box-shadow: var(--panel-shadow);
}

.toast.is-warning {
    border-color: rgba(255, 107, 107, 0.26);
}

.toast.is-success {
    border-color: rgba(76, 175, 80, 0.26);
}

.hidden {
    display: none !important;
}

#playPanel:fullscreen {
    padding: 18px;
    overflow: auto;
    background: rgba(0, 0, 0, 0.94);
}

#playPanel:fullscreen .game-stage {
    max-width: none;
}

@keyframes rise-in {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 80%, 100% {
        transform: translateY(0);
        opacity: 0.7;
    }
    40% {
        transform: translateY(-8px);
        opacity: 1;
    }
}

@keyframes badge-float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-4px);
    }
}

@keyframes badge-pulse {
    0%, 100% {
        transform: scale(0.96);
        opacity: 0.7;
    }
    50% {
        transform: scale(1.05);
        opacity: 1;
    }
}

@keyframes pollen-pan {
    from {
        background-position: 0 0, 0 0, 0 0, 0 0;
    }
    to {
        background-position: 170px 120px, -230px 150px, 210px -140px, -280px -170px;
    }
}

@keyframes leaf-fall {
    0% {
        transform: translate3d(-3vw, -8vh, 0) rotate(0deg);
        opacity: 0;
    }
    12% {
        opacity: 0.78;
    }
    50% {
        transform: translate3d(5vw, 48vh, 0) rotate(220deg);
    }
    100% {
        transform: translate3d(-2vw, 112vh, 0) rotate(520deg);
        opacity: 0;
    }
}

@keyframes firefly-glow {
    0%, 100% {
        opacity: 0.2;
        transform: translate3d(0, 0, 0) scale(0.72);
    }
    38% {
        opacity: 0.95;
        transform: translate3d(14px, -10px, 0) scale(1.25);
    }
    64% {
        opacity: 0.42;
        transform: translate3d(-10px, 12px, 0) scale(0.9);
    }
}

@media (prefers-reduced-motion: reduce) {
    .button,
    .tab-button,
    .view-mode-button,
    .theme-option,
    .snake-color-option,
    .side-tab-button,
    .achievement-card,
    .badge-halo,
    .badge-medallion,
    body::before,
    .leaf-drift span,
    .firefly-field span {
        transition: none;
        animation: none;
    }

    .button::before,
    .tab-button::before,
    .view-mode-button::before,
    .theme-option::before,
    .snake-color-option::before,
    .side-tab-button::before {
        transition: none;
    }
}

@media (min-width: 1161px) {
    .side-hub {
        position: sticky;
        top: 18px;
        height: calc(100vh - 36px);
        max-height: calc(100vh - 36px);
    }
}

@media (max-width: 1160px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
        grid-template-areas:
            "play"
            "hub"
            "ad";
    }

    .hero,
    .experience-toolbar,
    .panel-heading {
        flex-direction: column;
        align-items: flex-start;
    }

    .play-footer {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .sync-meta {
        grid-column: 1 / -1;
    }

    .panel-chip-row,
    .screen-controls {
        justify-content: flex-start;
    }

    .leaderboard-columns {
        grid-template-columns: 1fr;
    }

    .sync-meta {
        text-align: left;
    }

    .side-hub {
        height: auto;
        align-self: auto;
        max-height: none;
        overflow: visible;
    }

    .side-tab-panel {
        overflow: visible;
        padding-right: 0;
    }

    .achievements-panel.side-tab-panel {
        max-height: min(72vh, 780px);
        overflow: hidden;
    }

    .achievements-panel .achievement-grid {
        padding-right: 0;
    }
}

@media (max-width: 860px) {
    .app-shell {
        width: min(100%, calc(100% - 18px));
        margin: 10px auto 24px;
    }

    .hero,
    .play-panel,
    .profile-panel,
    .achievements-panel,
    .leaderboard-panel {
        padding: 18px;
    }

    .hero-guide-grid,
    .achievement-grid,
    .profile-stats {
        grid-template-columns: 1fr;
    }

    .inline-form-row,
    .control-bar,
    .button-row,
    .view-mode-row,
    .screen-controls,
    .side-tab-row,
    .theme-option-row,
    .snake-color-row,
    .speed-option-row {
        width: 100%;
    }

    .view-mode-row,
    .screen-controls {
        flex-direction: column;
    }

    .side-tab-row,
    .theme-option-row,
    .snake-color-row,
    .speed-option-row {
        grid-template-columns: 1fr;
    }

    .button,
    .tab-button,
    .side-tab-button,
    .view-mode-button,
    .theme-option,
    .snake-color-option,
    .display-menu-button {
        width: 100%;
    }

    .display-menu-wrap,
    .display-menu-panel {
        width: 100%;
    }

    .display-menu-panel {
        position: static;
        margin-top: 10px;
    }

    .achievements-panel.side-tab-panel {
        max-height: min(66vh, 620px);
    }

    .profile-stats {
        grid-template-columns: 1fr;
    }

    .achievement-card {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .achievement-badge-art {
        margin: 0 auto;
    }

    .achievement-progress-row {
        flex-direction: column;
        align-items: center;
    }

    .play-footer,
    .speed-stat-row {
        grid-template-columns: 1fr;
    }

    .footer-card-heading {
        flex-direction: column;
        align-items: flex-start;
    }

    .game-screen {
        inset: 14px;
        padding: 20px 16px;
    }
}