:root {
    --color-bg: #F5F0E8;
    --color-surface: #FFFFFF;
    --color-border: #8B7355;
    --color-text: #1A1A1A;
    --color-text-dim: #6B5B4F;
    --color-accent: #2C2C2C;
    --color-highlight: #000000;
    --font-body: 'Georgia', 'Times New Roman', serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1.125rem;
    --font-size-lg: 1.375rem;
    --font-size-xl: 1.75rem;
    --font-size-2xl: 2.25rem;
    --radius-sm: 4px;
    --shadow-card: 0 2px 8px rgba(44, 44, 44, 0.08);
    --chat-width: 320px;
}

body.dark {
    --color-bg: #1A1A1A;
    --color-surface: #2C2C2C;
    --color-border: #4A4A4A;
    --color-text: #E8E0D5;
    --color-text-dim: #9B8B7A;
    --color-accent: #D4C5B2;
    --color-highlight: #FFFFFF;
}

body.dark .btn:hover {
    background: #3a3a3a;
    color: #fff;
    border-color: #fff;
}

body.dark .btn--outline:hover {
    background: #fff;
    color: #1a1a1a;
}

:root,
body,
body * {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

@media (prefers-color-scheme: dark) {
    body:not(.light):not(.dark) {
        --color-bg: #1A1A1A;
        --color-surface: #2C2C2C;
        --color-border: #4A4A4A;
        --color-text: #E8E0D5;
        --color-text-dim: #9B8B7A;
        --color-accent: #D4C5B2;
        --color-highlight: #FFFFFF;
    }
}

body.a11y-contrast {
    --color-bg: #000000;
    --color-surface: #000000;
    --color-border: #FFFFFF;
    --color-text: #FFFFFF;
    --color-text-dim: #CCCCCC;
    --color-accent: #FFFF00;
    --color-highlight: #FFFFFF;
}

body.a11y-large {
    --font-size-base: 1.5rem;
    --font-size-lg: 1.75rem;
    --font-size-xl: 2rem;
    --font-size-2xl: 2.5rem;
}

body.a11y-outline .btn {
    border: 3px solid currentColor;
}

body.a11y-outline .sidebar__item {
    border: 1px solid currentColor;
    margin-bottom: 2px;
}

body.a11y-outline .header__nav a {
    border-bottom: 2px solid currentColor;
}

body.a11y-outline a {
    text-decoration: underline;
    text-underline-offset: 4px;
}

body.a11y-no-anim * {
    animation: none !important;
    transition: none !important;
}

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

html {
    font-size: 16px;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    line-height: 1.5;
    overflow-y: scroll;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--color-bg);
    overflow-y: auto;
}

h1,
h2,
h3 {
    font-family: var(--font-body);
    font-weight: 700;
    color: var(--color-highlight);
    line-height: 1.3;
}

h1 {
    font-size: var(--font-size-2xl);
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--color-border);
    padding-bottom: 0.5rem;
}

h2 {
    font-size: var(--font-size-xl);
    margin-bottom: 1rem;
}

h3 {
    font-size: var(--font-size-lg);
    margin-bottom: 0.75rem;
}

a {
    color: var(--color-accent);
    text-decoration: underline;
    text-underline-offset: 3px;
}

a:hover {
    color: var(--color-highlight);
}

p {
    margin-bottom: 1rem;
}

.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem clamp(1rem, 3vw, 3rem);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.5rem;
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    color: var(--color-bg);
    background: var(--color-accent);
    border: 2px solid var(--color-accent);
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
    text-decoration: none;
    border-radius: var(--radius-sm);
}

.btn:hover {
    background: var(--color-bg);
    color: var(--color-accent);
}

.btn--outline {
    background: transparent;
    color: var(--color-accent);
}

.btn--outline:hover {
    background: var(--color-accent);
    color: var(--color-bg);
}

.btn--small {
    padding: 0.35rem 1rem;
    font-size: var(--font-size-sm);
}

.header {
    background: var(--color-surface);
    border-bottom: 2px solid var(--color-border);
    padding: 0.75rem clamp(1rem, 3vw, 3rem);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-card);
    flex-wrap: wrap;
    gap: 0.5rem;
}

.header__logo {
    font-family: var(--font-body);
    font-size: clamp(1rem, 2.5vw, var(--font-size-xl));
    font-weight: 700;
    color: var(--color-highlight);
}

.header__nav {
    display: flex;
    gap: clamp(0.5rem, 2vw, 2rem);
    flex-wrap: wrap;
}

.header__nav a {
    font-family: var(--font-body);
    font-size: clamp(0.8rem, 1.5vw, var(--font-size-base));
    color: var(--color-text);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    padding-bottom: 2px;
    transition: border-color 0.2s;
}

.header__nav a.active,
.header__nav a:hover {
    border-color: var(--color-accent);
    color: var(--color-highlight);
}

.header__user {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: clamp(0.8rem, 1.5vw, var(--font-size-base));
}

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: clamp(1rem, 2vw, 1.5rem);
    margin-bottom: 1rem;
    box-shadow: var(--shadow-card);
    border-radius: var(--radius-sm);
}

.card__header {
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 0.75rem;
    margin-bottom: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card__title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-highlight);
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: var(--font-size-base);
    color: var(--color-text-dim);
    margin-bottom: 0.35rem;
}

.form-input {
    width: 100%;
    padding: 0.65rem;
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    outline: none;
    transition: border-color 0.2s;
    border-radius: var(--radius-sm);
}

.form-input:focus {
    border-color: var(--color-accent);
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 26, 26, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    padding: clamp(1rem, 3vw, 2rem);
    width: clamp(320px, 90vw, 520px);
    box-shadow: var(--shadow-card);
    border-radius: var(--radius-sm);
}

.modal__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 0.75rem;
    margin-bottom: 1.25rem;
}

.modal__title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-highlight);
}

.modal__close {
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    cursor: pointer;
    color: var(--color-text-dim);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: clamp(0.75rem, 1.5vw, var(--font-size-base));
}

.table th {
    text-align: left;
    color: var(--color-text-dim);
    font-weight: 700;
    padding: 0.75rem;
    border-bottom: 2px solid var(--color-border);
}

.table td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--color-border);
}

.game-layout {
    display: flex;
    gap: 0;
    flex: 1;
    min-height: 0;
}

.game-layout__main {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: clamp(0.5rem, 2vw, 2rem);
    min-width: 0;
}

.game-layout__chat {
    width: var(--chat-width);
    background: var(--color-surface);
    border-left: 2px solid var(--color-border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.game-layout__chat-header {
    background: var(--color-accent);
    color: var(--color-bg);
    padding: 0.5rem 0.75rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 700;
    font-size: var(--font-size-sm);
    cursor: pointer;
}

.game-layout__chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 0.75rem;
    font-size: var(--font-size-sm);
    background: var(--color-bg);
}

.game-layout__chat-input {
    display: flex;
    border-top: 1px solid var(--color-border);
}

.game-layout__chat-input input {
    flex: 1;
    padding: 0.65rem;
    border: none;
    background: var(--color-surface);
    font-family: var(--font-body);
    font-size: var(--font-size-sm);
    outline: none;
}

.game-layout__chat-input button {
    padding: 0.65rem 1rem;
    background: var(--color-accent);
    color: var(--color-bg);
    border: none;
    cursor: pointer;
}

.chat-mobile-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-surface);
    z-index: 1500;
    flex-direction: column;
}

.chat-mobile-overlay.open {
    display: flex;
}

.chat-mobile-overlay__header {
    background: var(--color-accent);
    color: var(--color-bg);
    padding: 0.75rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 700;
}

.chat-mobile-overlay__close {
    background: none;
    border: none;
    color: var(--color-bg);
    font-size: 1.5rem;
    cursor: pointer;
}

.chat-mobile-overlay__messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    font-size: var(--font-size-base);
    background: var(--color-bg);
}

.chat-mobile-overlay__input {
    display: flex;
    border-top: 2px solid var(--color-border);
    padding: 0.5rem;
}

.chat-mobile-overlay__input input {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid var(--color-border);
    background: var(--color-surface);
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    outline: none;
    border-radius: var(--radius-sm);
}

.chat-mobile-overlay__input button {
    padding: 0.75rem 1.25rem;
    background: var(--color-accent);
    color: var(--color-bg);
    border: none;
    margin-left: 0.5rem;
    cursor: pointer;
    border-radius: var(--radius-sm);
}

.chat-fab {
    display: none;
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--color-accent);
    color: var(--color-bg);
    font-size: 1.5rem;
    border: none;
    cursor: pointer;
    z-index: 400;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.grid {
    display: grid;
    gap: clamp(1rem, 2vw, 1.5rem);
}

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

.grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
    .grid--4 {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .grid--2,
    .grid--3,
    .grid--4 {
        grid-template-columns: repeat(2, 1fr);
    }
    :root {
        --chat-width: 0px;
    }
    .game-layout__chat {
        display: none;
    }
    .chat-fab {
        display: flex;
        align-items: center;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .grid--2,
    .grid--3,
    .grid--4 {
        grid-template-columns: 1fr;
    }
    html {
        font-size: 14px;
    }
    .header {
        flex-direction: column;
        text-align: center;
    }
}

@media (min-width: 2560px) {
    html {
        font-size: 20px;
    }
    .container {
        max-width: 2000px;
    }
    :root {
        --chat-width: 400px;
    }
}

:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.friends-subtab {
    text-decoration: none;
    color: var(--color-text-dim);
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    border-bottom: 2px solid transparent;
    transition: color 0.2s;
}

.friends-subtab:hover {
    color: var(--color-text);
}

.friends-subtab.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
    font-weight: 700;
}

.friend-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    transition: background 0.15s;
}

.friend-row:hover {
    background: var(--color-bg);
}

.friend-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-bg);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.status-online {
    background: #4caf50;
}

.status-ingame {
    background: #ff9800;
}

.status-offline {
    background: #9e9e9e;
}

.btn--icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--color-text-dim);
    font-size: 1rem;
    transition: all 0.15s;
}

.btn--icon:hover {
    background: var(--color-bg);
    color: var(--color-accent);
}

.pinned-section {
    background: var(--color-bg);
    border-radius: 10px;
    padding: 0.5rem;
    margin-bottom: 1rem;
}

.privacy-option {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 1rem 0;
    border-bottom: 1px solid var(--color-border);
    gap: 1rem;
}

.privacy-option:last-child {
    border-bottom: none;
}

.privacy-option .form-input,
.privacy-option select {
    flex-shrink: 0;
}

#incoming-requests .friend-row {
    display: flex !important;
    min-height: 40px;
}

.profile-header {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.profile-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    overflow: hidden;
    flex-shrink: 0;
    border: 2px solid var(--color-border);
}

.profile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-info h1 {
    margin-bottom: 0.25rem;
}

.profile-info .status {
    font-size: 0.9rem;
    color: var(--color-text-dim);
}

.profile-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
}

.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: 1.25rem 1rem;
    border-radius: 8px;
    text-align: center;
}

.stat-card .value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-accent);
}

.stat-card .label {
    font-size: 0.85rem;
    color: var(--color-text-dim);
}

.hidden-message {
    text-align: center;
    padding: 3rem;
    color: var(--color-text-dim);
}

.status-away {
    background: #ffc107;
}

.status-dnd {
    background: #f44336;
}

.gcm-emoji-panel {
    position: absolute;
    bottom: 40px;
    left: 0;
    z-index: 9999;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    max-height: 250px;
    overflow-y: auto;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    width: 300px;
}

@media (max-width: 768px) {
    #game-canvas {
        max-width: 100vw !important;
        max-height: 60vh !important;
        width: auto !important;
        height: auto !important;
    }
    #game-wrapper {
        max-width: 100vw;
        overflow: hidden;
    }
    .table-wrapper {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    .table {
        min-width: 600px;
    }
    .container {
        padding: 1rem;
    }
    .card {
        padding: 0.75rem;
    }
    .btn {
        padding: 0.75rem 1.25rem;
        font-size: 1rem;
    }
    .btn--small {
        padding: 0.5rem 1rem;
    }
    .modal {
        width: 95vw;
        max-height: 90vh;
        overflow-y: auto;
    }
    .form-input {
        font-size: 1rem;
        padding: 0.75rem;
    }
}

@media (max-width: 480px) {
    #game-canvas {
        max-height: 50vh !important;
    }
    h1 {
        font-size: 1.5rem;
    }
    .header__nav {
        gap: 0.5rem;
    }
}