body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--bg-primary, #1a1510) 0%, var(--bg-secondary, #2a2218) 100%);
    margin: 0;
    padding: 20px;
    color: var(--text-primary, #d4cfc8);
    font-size: var(--font-size-base, 14px);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: var(--bg-secondary, #2b2520);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.login-container {
    background: var(--bg-secondary, #2b2520);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    max-width: 400px;
    width: 90%;
}

h1 {
    text-align: center;
    color: var(--accent, #c9a96e);
    margin-bottom: 30px;
    font-size: 2.5em;
}

h3 {
    color: var(--accent, #c9a96e);
    border-bottom: 2px solid var(--accent, #8b7355);
    padding-bottom: 5px;
    margin-bottom: 15px;
}

.error {
    background: #3d1a1a;
    border: 2px solid #f44;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    color: #ff6b6b;
}

.controls {
    text-align: center;
    margin-bottom: 20px;
}

.controls button {
    background: #6b5a3e;
    color: #f0e8d8;
    border: none;
    padding: 12px 24px;
    margin: 5px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: all 0.3s ease;
}

.controls button:hover {
    background: #7d6a4c;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
}

.controls button:active {
    transform: translateY(0);
}

.game-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.info-section {
    background: var(--bg-secondary, #352f28);
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid var(--accent, #8b7355);
}

.info-section p {
    margin: 8px 0;
    font-size: var(--font-size-base, 14px);
}

.policy-controls {
    background: #352f28;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.policy-section {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.policy-section label {
    font-weight: bold;
    min-width: 100px;
}

.policy-section select {
    flex: 1;
    padding: 8px;
    border: 1px solid #5a4e3c;
    border-radius: 4px;
    font-size: 14px;
    background: #2b2520;
    color: #d4cfc8;
}

.policy-section button {
    background: #5a7a3a;
    color: #f0e8d8;
    border: none;
    padding: 8px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    transition: background 0.3s ease;
}

.policy-section button:hover {
    background: #4a6a2e;
}

/* Game layout flex container — enables reorder on mobile */
.game-layout {
    display: flex;
    flex-direction: column;
}

/* Collapsible sections */
.collapsible-section {
    margin-bottom: 12px;
    border-radius: 8px;
    overflow: hidden;
}

.collapsible-section > summary {
    cursor: pointer;
    padding: 10px 16px;
    background: var(--bg-secondary, #352f28);
    color: var(--accent, #c9a96e);
    font-weight: bold;
    font-size: 1.1em;
    border-radius: 8px;
    border-left: 4px solid var(--accent, #8b7355);
    list-style: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.collapsible-section > summary::-webkit-details-marker {
    display: none;
}

.collapsible-section > summary::before {
    content: '▸';
    display: inline-block;
    transition: transform 0.2s ease;
}

.collapsible-section[open] > summary::before {
    transform: rotate(90deg);
}

.collapsible-section[open] > summary {
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
}

/* Remove extra margins from nested elements inside collapsible sections */
.collapsible-section .game-info {
    margin-bottom: 0;
}

.collapsible-section .policy-controls {
    margin-bottom: 0;
}

.collapsible-section .armies-list {
    margin-top: 0;
}

#gameCanvas {
    text-align: center;
    margin: 20px 0;
}

#mapCanvas {
    border: 3px solid #8b7355;
    border-radius: 8px;
    background: #1a1510;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.armies-list {
    background: #352f28;
    padding: 20px;
    border-radius: 8px;
    margin-top: 20px;
}

.army-item {
    background: #2b2520;
    padding: 10px;
    margin: 8px 0;
    border-radius: 4px;
    border-left: 4px solid #8b7355;
}

.army-item p {
    margin: 0 0 8px 0;
    font-size: 14px;
}

.army-info {
    margin-bottom: 8px;
}

.army-actions {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-top: 8px;
}

.split-input {
    width: 80px;
    padding: 6px 10px;
    border: 1px solid #5a4e3c;
    border-radius: 4px;
    font-size: 14px;
    background: #2b2520;
    color: #d4cfc8;
}

.split-button {
    background: #8b3a3a;
    color: #f0e8d8;
    border: none;
    padding: 6px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    font-size: 14px;
    transition: background 0.3s ease;
}

.split-button:hover {
    background: #a04040;
}

.user-info {
    text-align: center;
    margin-bottom: 20px;
    padding: 10px;
    background: #352f28;
    border-radius: 8px;
}

.user-info p {
    margin: 5px 0;
}

.user-info .logout-button {
    background: #8b3a3a;
    color: #f0e8d8;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
}

.user-info .logout-button:hover {
    background: #a04040;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary, #d4cfc8);
    font-weight: bold;
}

input[type="text"] {
    width: 100%;
    padding: 12px;
    border: 2px solid #5a4e3c;
    border-radius: 6px;
    font-size: 16px;
    box-sizing: border-box;
    transition: border-color 0.3s ease;
    background: var(--bg-primary, #352f28);
    color: var(--text-primary, #d4cfc8);
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--accent, #c9a96e);
}

.login-container button {
    width: 100%;
    background: #6b5a3e;
    color: #f0e8d8;
    border: none;
    padding: 14px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 18px;
    font-weight: bold;
    transition: all 0.3s ease;
}

.login-container button:hover {
    background: #7d6a4c;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
}

.login-container button:active {
    transform: translateY(0);
}

.info {
    text-align: center;
    color: #8a8278;
    margin-top: 20px;
    font-size: 14px;
}

#armiesList {
    max-height: 400px;
    overflow-y: auto;
}

#armiesList::-webkit-scrollbar {
    width: 8px;
}

#armiesList::-webkit-scrollbar-track {
    background: #352f28;
    border-radius: 4px;
}

#armiesList::-webkit-scrollbar-thumb {
    background: #8b7355;
    border-radius: 4px;
}

#armiesList::-webkit-scrollbar-thumb:hover {
    background: #a08868;
}

/* ========================
   Toast Notification System
   ======================== */
#toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column-reverse;
    gap: 8px;
    max-width: 360px;
}

.toast {
    padding: 12px 20px;
    border-radius: 6px;
    color: #f0e8d8;
    font-size: 14px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    animation: toast-slide-in 0.3s ease forwards;
    cursor: pointer;
    position: relative;
    border-left: 4px solid transparent;
}

.toast--info {
    background: #3a3832;
    border-left-color: #8a8278;
}

.toast--success {
    background: #2a3a2a;
    border-left-color: #5a9a5a;
}

.toast--warning {
    background: #3a3520;
    border-left-color: #c9a96e;
}

.toast--danger {
    background: #3d1a1a;
    border-left-color: #e05050;
    animation: toast-slide-in 0.3s ease forwards, toast-pulse 2s ease-in-out infinite;
}

@keyframes toast-slide-in {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes toast-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

@keyframes toast-fade-out {
    from {
        opacity: 1;
        transform: translateX(0);
    }
    to {
        opacity: 0;
        transform: translateX(100%);
    }
}

.toast.toast--dismissing {
    animation: toast-fade-out 0.3s ease forwards;
}

/* Respect reduced-motion preference */
@media (prefers-reduced-motion: reduce) {
    .toast {
        animation: none !important;
    }
    .toast.toast--dismissing {
        animation: none !important;
        opacity: 0;
    }
}

/* ========================
   Canvas Tooltip
   ======================== */
.canvas-tooltip {
    position: absolute;
    background: rgba(30, 25, 20, 0.95);
    color: #d4cfc8;
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 13px;
    pointer-events: none;
    z-index: 100;
    border: 1px solid #5a4e3c;
    max-width: 280px;
    line-height: 1.4;
    display: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

/* ========================
   Stat Color Coding
   ======================== */
.stat--good {
    color: #5a9a5a;
}

.stat--warn {
    color: #c9a96e;
}

.stat--danger {
    color: #e05050;
}

/* ========================
   Policy Cooldown Progress Bar
   ======================== */
.policy-progress {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 4px;
}

.policy-progress-bar {
    flex: 1;
    height: 8px;
    background: #2b2520;
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid #5a4e3c;
}

.policy-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #5a9a5a, #c9a96e);
    border-radius: 4px;
    transition: width 0.3s ease;
}

.policy-progress-label {
    font-size: 12px;
    color: #8a8278;
    white-space: nowrap;
}

/* ========================
   Game Over Banner
   ======================== */
.game-over-banner {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.7);
    z-index: 50;
    pointer-events: none;
}

.game-over-banner-content {
    background: linear-gradient(135deg, #2b2520, #3a3228);
    border: 3px solid #c9a96e;
    border-radius: 12px;
    padding: 30px 50px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
}

.game-over-banner-content h2 {
    color: #c9a96e;
    font-size: 2em;
    margin: 0 0 10px 0;
}

.game-over-banner-content p {
    color: #d4cfc8;
    font-size: 1.2em;
    margin: 0;
}

/* ========================
   Auto Play Toggle
   ======================== */
#autoPlayToggle.auto-playing {
    background: #8a6d2f;
    box-shadow: 0 0 8px rgba(201, 169, 110, 0.4);
}

#autoPlayToggle.auto-playing:hover {
    background: #9a7d3f;
}

/* ========================
   Army Selection Ring (canvas helper)
   ======================== */
#gameCanvas {
    position: relative;
}

/* ========================
   Inline Split Validation
   ======================== */
.split-input:invalid {
    border-color: #e05050;
}

.split-validation-msg {
    color: #e05050;
    font-size: 12px;
    margin-top: 2px;
    display: none;
}

.split-input:invalid + .split-button + .split-validation-msg,
.split-input.invalid + .split-button + .split-validation-msg {
    display: block;
}

/* ========================
   Theme & Colorblind CSS Custom Properties
   ======================== */
:root {
    --player1-color: rgba(100, 150, 255, 0.3);
    --player2-color: rgba(255, 100, 100, 0.3);
    --player1-army: #0066FF;
    --player2-army: #FF0000;
    --font-size-base: 14px;
    --bg-primary: #1a1510;
    --bg-secondary: #2b2520;
    --text-primary: #d4cfc8;
    --text-secondary: #8a8278;
    --accent: #c9a96e;
}

:root[data-colorblind="deuteranopia"] {
    --player1-color: rgba(0, 114, 178, 0.3);
    --player2-color: rgba(230, 159, 0, 0.3);
    --player1-army: #0072B2;
    --player2-army: #E69F00;
}

:root[data-colorblind="protanopia"] {
    --player1-color: rgba(240, 228, 66, 0.3);
    --player2-color: rgba(213, 94, 0, 0.3);
    --player1-army: #F0E442;
    --player2-army: #D55E00;
}

:root[data-colorblind="tritanopia"] {
    --player1-color: rgba(204, 121, 167, 0.3);
    --player2-color: rgba(0, 158, 115, 0.3);
    --player1-army: #CC79A7;
    --player2-army: #009E73;
}

:root[data-theme="classic"] {
    --bg-primary: #f5f0e8;
    --bg-secondary: #e8e0d4;
    --text-primary: #2a2218;
    --text-secondary: #5a4e3c;
    --accent: #8b7355;
}

:root[data-theme="high-contrast"] {
    --bg-primary: #000000;
    --bg-secondary: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --accent: #ffff00;
}

:root[data-font-size="small"] {
    --font-size-base: 12px;
}

:root[data-font-size="large"] {
    --font-size-base: 16px;
}

/* ========================
   Settings Panel
   ======================== */
.settings-panel {
    background: var(--bg-secondary, #352f28);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    border-left: 4px solid var(--accent, #c9a96e);
    color: var(--text-primary, #d4cfc8);
}

.settings-panel h3 {
    margin-top: 0;
    color: var(--accent, #c9a96e);
}

.settings-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}

.settings-row label {
    min-width: 120px;
    font-weight: bold;
    color: var(--text-primary, #d4cfc8);
}

.settings-row select {
    padding: 6px 10px;
    border: 1px solid var(--text-secondary, #5a4e3c);
    border-radius: 4px;
    background: var(--bg-primary, #2b2520);
    color: var(--text-primary, #d4cfc8);
    font-size: var(--font-size-base, 14px);
}

.collapsible-section .settings-panel {
    margin-bottom: 0;
}

/* ========================
   Mobile / Responsive Layout
   ======================== */
@media (max-width: 768px) {
    /* Reduce body padding and container chrome */
    body {
        padding: 4px;
    }

    .container {
        padding: 8px;
        border-radius: 6px;
    }

    h1 {
        font-size: 1.4em;
        margin-bottom: 10px;
    }

    h3 {
        font-size: 1em;
        margin-bottom: 8px;
        padding-bottom: 4px;
    }

    /* Reorder game layout so canvas + controls are first on mobile */
    .game-layout {
        display: flex;
        flex-direction: column;
    }

    .game-layout > .controls {
        order: 1;
    }

    .game-layout > #gameCanvas {
        order: 2;
    }

    .game-layout > .section-status {
        order: 3;
    }

    .game-layout > .section-armies {
        order: 4;
    }

    .game-layout > .section-policy {
        order: 5;
    }

    .game-layout > .section-settings {
        order: 6;
    }

    /* Collapse panels by default on mobile — only Game Status & Armies stay open */
    .collapsible-section > summary {
        padding: 8px 12px;
        font-size: 1em;
        min-height: 44px;
    }

    .collapsible-section {
        margin-bottom: 6px;
    }

    /* Stack the HUD grid into a single column */
    .game-info {
        grid-template-columns: 1fr;
        gap: 8px;
        margin-bottom: 10px;
    }

    .info-section {
        padding: 8px 10px;
    }

    .info-section p {
        margin: 4px 0;
        font-size: var(--font-size-base, 14px);
    }

    /* Canvas: center and fill width */
    #gameCanvas {
        overflow: hidden;
        margin: 8px auto;
        display: flex;
        justify-content: center;
    }

    #mapCanvas {
        display: block;
        max-width: 100%;
    }

    /* Compact policy controls */
    .policy-controls {
        padding: 10px;
        margin-bottom: 0;
    }

    .policy-section {
        flex-wrap: wrap;
        margin-bottom: 8px;
        gap: 6px;
    }

    .policy-section label {
        min-width: unset;
        width: 100%;
        margin-bottom: 0;
        font-size: var(--font-size-base, 14px);
    }

    .policy-section select {
        width: 100%;
        flex: unset;
        font-size: var(--font-size-base, 14px);
    }

    .policy-section button {
        width: 100%;
    }

    /* Compact user info */
    .user-info {
        padding: 6px 8px;
        margin-bottom: 10px;
    }

    /* Minimum 44×44px tap targets for buttons and selects */
    .controls button,
    .policy-section button,
    .split-button,
    .user-info .logout-button {
        min-height: 44px;
        min-width: 44px;
        padding: 10px 16px;
        font-size: var(--font-size-base, 14px);
    }

    .controls {
        margin-bottom: 10px;
    }

    .controls button {
        padding: 10px 14px;
        font-size: var(--font-size-base, 14px);
    }

    .policy-section select,
    .settings-row select {
        min-height: 44px;
    }

    /* Settings panel: scrollable and wrappable */
    .settings-panel {
        max-height: 50vh;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .settings-row {
        flex-wrap: wrap;
    }

    .settings-row label {
        min-width: unset;
        width: 100%;
    }

    .settings-row select {
        width: 100%;
    }

    /* Toast notifications: full-width at bottom, no clipping */
    #toast-container {
        left: 8px;
        right: 8px;
        bottom: 8px;
        max-width: none;
    }

    .toast {
        font-size: var(--font-size-base, 14px);
    }

    /* Game over banner: smaller padding for narrow screens */
    .game-over-banner-content {
        padding: 16px 20px;
    }

    .game-over-banner-content h2 {
        font-size: 1.3em;
    }

    .game-over-banner-content p {
        font-size: 0.95em;
    }

    /* Army list: smaller padding */
    .armies-list {
        padding: 10px;
        margin-top: 0;
    }

    #armiesList {
        max-height: 250px;
    }

    .army-item {
        padding: 8px;
        margin: 4px 0;
    }

    .army-actions {
        flex-wrap: wrap;
    }

    .split-input {
        width: 100%;
    }

    /* Reposition tooltip for small screens — show below touch point */
    .canvas-tooltip {
        max-width: 240px;
        font-size: 12px;
    }

    /* Login page: mobile-friendly sizing */
    .login-container {
        padding: 24px 16px;
        width: 95%;
        max-width: none;
        border-radius: 10px;
    }

    .login-container h1 {
        font-size: 2em;
        margin-bottom: 20px;
    }

    .login-container button {
        min-height: 44px;
        font-size: 16px;
        padding: 12px;
    }

    .form-group input[type="text"] {
        min-height: 44px;
        font-size: 16px;
        padding: 10px;
    }

    .info {
        font-size: var(--font-size-base, 13px);
    }
}