/* ============================================================
   BATLINGO HOME - RESPONSIVE ARENA (CLEAN REPLACEMENT)
   Compatible with current index.html and home.js.
   This file REPLACES old home.css; do not append older V2/V3/V4.
   ============================================================ */

.bat-home, .bat-home * { box-sizing: border-box; }
.bat-home.hidden, .bat-home .hidden { display: none !important; }

/* Home-only layout: never change the configuration screen's layout. */
#setupScreen:has(> #homeScreen:not(.hidden)) {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    width: 100%;
    min-height: 100dvh;
    height: auto;
    margin: 0;
    padding: 0;
    overflow-x: clip;
}

/* Global header, anchored to viewport's top-right, all sizes. */
#setupScreen:has(> #homeScreen:not(.hidden)) > .lobby-header {
    position: absolute !important;
    inset: 0 0 auto 0 !important;
    z-index: 100;
    display: flex !important;
    justify-content: flex-end !important;
    align-items: center !important;
    width: 100% !important;
    max-width: none !important;
    height: 56px;
    min-height: 56px;
    margin: 0 !important;
    padding: 8px max(14px, env(safe-area-inset-right)) 6px 14px !important;
    transform: none !important;
}
#setupScreen:has(> #homeScreen:not(.hidden)) > .lobby-header .mini-logo {
    display: none !important;
}
#setupScreen:has(> #homeScreen:not(.hidden)) > .lobby-header .home-actions {
    position: relative !important;
    inset: auto !important;
    display: flex !important;
    flex-flow: row nowrap !important;
    align-items: center !important;
    justify-content: flex-end !important;
    gap: 8px;
    width: max-content !important;
    max-width: 100% !important;
    margin: 0 0 0 auto !important;
    padding: 0 !important;
    transform: none !important;
}
#setupScreen:has(> #homeScreen:not(.hidden)) > .lobby-header .home-actions .hidden {
    display: none !important;
}
#setupScreen:has(> #homeScreen:not(.hidden)) > .lobby-header .top-language,
#setupScreen:has(> #homeScreen:not(.hidden)) > .lobby-header #homeUserBtn,
#setupScreen:has(> #homeScreen:not(.hidden)) > .lobby-header #homeLoginBtn {
    min-width: 0;
    margin: 0;
}
#setupScreen:has(> #homeScreen:not(.hidden)) > .lobby-header .home-user-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* The 5th mode is JLPT Exam; avoid accidental header duplicates. */
#setupScreen:has(> #homeScreen:not(.hidden)) > .lobby-header #jlptExamHeaderBtn {
    display: none !important;
}

/* -------- Full-height home: flex distributes leftover space to modes -------- */
#setupScreen:has(> #homeScreen:not(.hidden)) > #homeScreen.bat-home {
    --home-gap: clamp(9px, 1.4dvh, 16px);
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: var(--home-gap);
    width: min(900px, calc(100% - 40px));
    max-width: 900px;
    height: 100dvh;
    min-height: 680px;
    flex: 0 0 auto;
    margin: 0 auto;
    padding: max(65px, env(safe-area-inset-top)) 0 max(16px, env(safe-area-inset-bottom));
    color: #f8fafc;
    overflow: visible;
}
#homeScreen > section {
    width: 100%;
    min-width: 0;
    margin: 0;
}

/* -------- Logo -------- */
#homeScreen .bat-home-brand {
    flex: 0 0 auto;
    padding: 0;
    text-align: center;
}
#homeScreen .bat-home-logo {
    color: #fbbf24;
    font-size: clamp(30px, 3.7vw, 44px);
    line-height: 1.06;
    font-weight: 1000;
    letter-spacing: 2.5px;
    text-shadow: 0 3px 15px rgba(251,191,36,.2);
}
#homeScreen .bat-home-logo span { color: #f8fafc; }
#homeScreen .bat-home-brand p {
    margin: 3px 0 0;
    color: #aebcd0;
    font-size: 9px;
    font-weight: 800;
    letter-spacing: 2px;
}

/* -------- Player -------- */
#homeScreen .bat-home-player {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    gap: 14px;
    min-height: 90px;
    padding: 10px 14px;
    border: 1px solid rgba(148,163,184,.23);
    border-radius: 16px;
    background: linear-gradient(135deg,rgba(30,43,65,.98),rgba(16,25,43,.98));
}
#homeScreen .bat-home-mascot {
    position: relative;
    flex: 0 0 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    min-width: 70px;
    padding: 2px;
    border: 1px solid rgba(251,191,36,.4);
    border-radius: 13px;
    background: radial-gradient(circle at 50% 75%, #334155,#182438);
    overflow: hidden;
    cursor: pointer;
}
#homeScreen .bat-home-mascot img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
}
#homeScreen .bat-home-mascot img[hidden],
#homeScreen .bat-home-mascot-fallback.hidden { display: none !important; }
#homeScreen .bat-home-mascot-fallback { font-size: 37px; line-height: 1; }
#homeScreen .bat-home-player-info { flex: 1 1 auto; min-width: 0; }
#homeScreen .bat-home-player-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
}
#homeScreen .bat-home-player-name { min-width: 0; }
#homeScreen .bat-home-player-name strong {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 16px;
    font-weight: 900;
}
#homeScreen .bat-home-player-level {
    flex-shrink: 0;
    padding: 4px 9px;
    border-radius: 8px;
    background: rgba(251,191,36,.13);
    color: #fbbf24;
    font-size: 13px;
    font-weight: 900;
}
#homeScreen .bat-home-exp-track {
    height: 8px;
    width: 100%;
    overflow: hidden;
    border-radius: 99px;
    background: #334155;
}
#homeScreen .bat-home-exp-fill {
    width: 0;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg,#f59e0b,#fde047);
    transition: width .3s ease;
}
#homeScreen .bat-home-exp-bottom {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    margin-top: 5px;
    color: #94a3b8;
    font-size: 10px;
}

/* -------- Learning language: label and selector ONE row -------- */
#homeScreen .bat-home-language {
    position: relative;
    flex: 0 0 auto;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    min-height: 45px;
}
#homeScreen .bat-home-language-label {
    flex: 0 0 auto;
    white-space: nowrap;
    color: #d4e1f2;
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 1px;
}
#homeScreen .bat-home-language-btn {
    flex: 0 1 48%;
    display: flex;
    align-items: center;
    gap: 9px;
    width: 48%;
    max-width: 400px;
    min-width: 0;
    min-height: 45px;
    margin: 0;
    padding: 7px 14px;
    border: 1px solid rgba(148,163,184,.25);
    border-radius: 12px;
    background: #1d2a3d;
    color: #f8fafc;
    cursor: pointer;
}
#homeScreen .bat-home-flag { flex: 0 0 auto; font-size: 20px; }
#homeScreen .bat-home-language-btn strong {
    flex: 1 1 auto;
    min-width: 0;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    text-align: left;
    font-size: 13px;
    letter-spacing: .3px;
}
#homeScreen .bat-home-language-chevron { margin-left: auto; color: #94a3b8; font-size: 19px; }
#homeScreen .bat-home-language-options {
    position: absolute;
    z-index: 110;
    top: calc(100% + 5px);
    right: 0;
    width: min(400px, 100%);
    padding: 6px;
    border: 1px solid #475569;
    border-radius: 12px;
    background: #1d2a3d;
    box-shadow: 0 12px 24px rgba(0,0,0,.35);
}
#homeScreen .bat-home-language-option {
    display: flex;
    align-items: center;
    gap: 12px;
    min-height: 42px;
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 12px;
}
#homeScreen .bat-home-language-option strong { flex: 1; }
#homeScreen .bat-home-language-option small { font-size: 9px; }
#homeScreen .bat-home-language-option.selected { background: rgba(251,191,36,.12); color: #fbbf24; }
#homeScreen .bat-home-language-option.unavailable { opacity: .45; cursor: not-allowed; }

/* -------- Game modes occupy all remaining height -------- */
#homeScreen .bat-home-label {
    flex: 0 0 auto;
    margin: 0;
    color: #b4c5dc;
    font-size: 11px;
    line-height: 1.3;
    font-weight: 900;
    letter-spacing: 1.4px;
}
#homeScreen .bat-home-modes {
    flex: 1 1 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-height: 350px;
}
#homeScreen .bat-home-mode-grid {
    flex: 1 1 auto;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: minmax(0, 1fr) minmax(0, 1fr) minmax(74px, .47fr);
    gap: 12px;
    min-height: 0;
    width: 100%;
}
#homeScreen .bat-home-mode-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 7px;
    width: 100%;
    min-width: 0;
    min-height: 0;
    height: 100%;
    margin: 0;
    padding: clamp(15px,2.1dvh,24px);
    overflow: hidden;
    border: 1px solid rgba(255,255,255,.16);
    border-radius: 16px;
    color: #fff;
    text-align: left;
    cursor: pointer;
    transition: transform .15s ease, filter .15s ease;
}
#homeScreen .bat-home-mode-card:hover { filter: brightness(1.1); transform: translateY(-2px); }
#homeScreen .bat-home-mode-card:active { transform: scale(.98); }
#homeScreen .bat-home-mode-icon { font-size: clamp(27px,3.3dvh,36px); line-height: 1.1; }
#homeScreen .bat-home-mode-card strong { font-size: clamp(18px,2.25dvh,24px); font-weight: 900; line-height: 1.2; letter-spacing: .2px; }
#homeScreen .bat-home-mode-card small { font-size: clamp(11px,1.45dvh,14px); line-height: 1.35; color: rgba(255,255,255,.86); }
#homeScreen .bat-home-mode-arrow { position: absolute; top: 12px; right: 14px; font-size: 19px; opacity: .7; }
#homeScreen .bat-mode-solo { background: linear-gradient(135deg,#874b12,#432511); }
#homeScreen .bat-mode-flashcard { background: linear-gradient(135deg,#155e75,#103447); }
#homeScreen .bat-mode-pvp { background: linear-gradient(135deg,#822b61,#431d40); }
#homeScreen .bat-mode-rank { background: linear-gradient(135deg,#52712b,#293e20); }

/* JLPT Exam fifth card spans both columns, but shares the grid's height. */
#homeScreen .bat-home-mode-card.bat-mode-exam {
    grid-column: 1 / -1;
    grid-row: 3;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    gap: 14px;
    min-height: 74px;
    padding: 12px 20px;
    border: 1px solid #b88635;
    background: linear-gradient(110deg,#78350f,#292037);
}
#homeScreen .bat-mode-exam .bat-home-mode-icon { font-size: clamp(26px,3.4dvh,34px); }
#homeScreen .bat-home-exam-text { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
#homeScreen .bat-mode-exam .bat-home-mode-arrow { top: 50%; right: 16px; transform: translateY(-50%); }

/* -------- Quick Access: last element, anchored to Home's bottom -------- */
#homeScreen .bat-home-quick {
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: auto;
}
#homeScreen .bat-home-quick-grid {
    display: grid;
    grid-template-columns: repeat(4,minmax(0,1fr));
    gap: 10px;
    width: 100%;
}
#homeScreen .bat-home-quick-item {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 100%;
    min-width: 0;
    min-height: 76px;
    padding: 10px 4px;
    border: 1px solid rgba(148,163,184,.2);
    border-radius: 12px;
    background: #1d2a3d;
    color: #f8fafc;
    cursor: pointer;
}
#homeScreen .bat-home-quick-item > span:first-child { font-size: 24px; line-height: 1; }
#homeScreen .bat-home-quick-item small { max-width: 100%; font-size: 10px; font-weight: 900; text-align: center; overflow-wrap: anywhere; }
#homeScreen .bat-home-quick-item:disabled { opacity: .55; cursor: not-allowed; }
#homeScreen .bat-home-quick-item em {
    position: absolute; top: 3px; right: 3px;
    padding: 2px 3px; border-radius: 4px;
    background: #475569; color: #fff;
    font-size: 7px; font-style: normal;
}
#homeScreen .bat-home-review-count {
    position: absolute; top: 4px; right: 5px;
    display: flex; align-items: center; justify-content: center;
    min-width: 17px; height: 17px; padding: 0 3px;
    border-radius: 20px; background: #ef4444;
    color: #fff; font-size: 9px; font-weight: 900;
}

/* -------- Tablet/mobile -------- */
@media (max-width: 767px) {
    #setupScreen:has(> #homeScreen:not(.hidden)) > .lobby-header {
        height: 52px;
        min-height: 52px;
        padding: max(7px,env(safe-area-inset-top)) max(10px,env(safe-area-inset-right)) 5px 10px !important;
    }
    #setupScreen:has(> #homeScreen:not(.hidden)) > .lobby-header .home-actions {
        gap: 5px;
    }
    #setupScreen:has(> #homeScreen:not(.hidden)) > .lobby-header #menuButton {
        flex: 0 0 37px;
        width: 37px;
        height: 37px;
        min-width: 37px;
        margin: 0;
    }
    #setupScreen:has(> #homeScreen:not(.hidden)) > .lobby-header .top-language-select { max-width: 110px; font-size: 12px; }
    #setupScreen:has(> #homeScreen:not(.hidden)) > .lobby-header #homeUserBtn,
    #setupScreen:has(> #homeScreen:not(.hidden)) > .lobby-header #homeLoginBtn { max-width: 126px; }

    #setupScreen:has(> #homeScreen:not(.hidden)) > #homeScreen.bat-home {
        --home-gap: 9px;
        width: min(100% - 20px, 560px);
        min-height: 690px;
        padding: max(56px,calc(env(safe-area-inset-top) + 48px)) 0 max(12px,env(safe-area-inset-bottom));
    }
    #homeScreen .bat-home-logo { font-size: clamp(27px,6.7vw,34px); }
    #homeScreen .bat-home-brand p { font-size: 8px; }
    #homeScreen .bat-home-player { min-height: 77px; padding: 8px 10px; gap: 10px; border-radius: 13px; }
    #homeScreen .bat-home-mascot { flex-basis: 59px; width: 59px; height: 59px; min-width: 59px; border-radius: 11px; }
    #homeScreen .bat-home-player-name strong { font-size: 13px; }
    #homeScreen .bat-home-player-level { font-size: 11px; }
    #homeScreen .bat-home-player-top { margin-bottom: 7px; }
    #homeScreen .bat-home-exp-track { height: 7px; }
    #homeScreen .bat-home-language-label { font-size: 10px; letter-spacing: .4px; }
    #homeScreen .bat-home-language-btn { flex-basis: 55%; width: 55%; min-height: 43px; padding: 7px 9px; gap: 6px; }
    #homeScreen .bat-home-language-btn strong { font-size: 12px; }
    #homeScreen .bat-home-flag { font-size: 17px; }
    #homeScreen .bat-home-modes { min-height: 328px; gap: 7px; }
    #homeScreen .bat-home-label { font-size: 10px; }
    #homeScreen .bat-home-mode-grid { gap: 8px; grid-template-rows: minmax(0,1fr) minmax(0,1fr) minmax(65px,.52fr); }
    #homeScreen .bat-home-mode-card { padding: 12px; border-radius: 13px; gap: 6px; }
    #homeScreen .bat-home-mode-icon { font-size: 25px; }
    #homeScreen .bat-home-mode-card strong { font-size: clamp(14px,3.7vw,18px); }
    #homeScreen .bat-home-mode-card small { font-size: 10px; }
    #homeScreen .bat-home-mode-arrow { top: 8px; right: 9px; font-size: 15px; }
    #homeScreen .bat-home-mode-card.bat-mode-exam { min-height: 65px; padding: 10px 13px; }
    #homeScreen .bat-home-quick-grid { gap: 6px; }
    #homeScreen .bat-home-quick-item { min-height: 66px; padding: 8px 2px; }
    #homeScreen .bat-home-quick-item > span:first-child { font-size: 20px; }
    #homeScreen .bat-home-quick-item small { font-size: clamp(8px,2vw,10px); }
}

@media (max-width: 380px) {
    #setupScreen:has(> #homeScreen:not(.hidden)) > .lobby-header .home-actions { gap: 4px; }
    #setupScreen:has(> #homeScreen:not(.hidden)) > .lobby-header .top-language-select { max-width: 92px; font-size: 11px; }
    #setupScreen:has(> #homeScreen:not(.hidden)) > .lobby-header #homeUserBtn { max-width: 92px; }
    #homeScreen .bat-home-language-label { font-size: 9px; }
    #homeScreen .bat-home-language-btn { flex-basis: 53%; width: 53%; }
    #homeScreen .bat-home-mode-card { padding: 9px; }
    #homeScreen .bat-home-mode-card strong { font-size: 13px; }
    #homeScreen .bat-home-mode-card small { font-size: 9px; }
}

/* Short devices: scroll rather than squashing buttons or hiding Quick Access. */
@media (max-height: 720px) {
    #setupScreen:has(> #homeScreen:not(.hidden)) > #homeScreen.bat-home {
        height: auto;
        min-height: 100dvh;
    }
    #homeScreen .bat-home-modes { flex: 0 0 auto; min-height: 0; }
    #homeScreen .bat-home-mode-grid { flex: 0 0 auto; grid-template-rows: 118px 118px 68px; }
    #homeScreen .bat-home-quick { margin-top: 12px; }
}
@media (max-width: 767px) and (max-height: 720px) {
    #homeScreen .bat-home-mode-grid { grid-template-rows: 112px 112px 66px; }
}

/* Existing functionality: focus, touch, and reduced motion. */
#homeScreen button { -webkit-tap-highlight-color: transparent; touch-action: manipulation; }
#homeScreen button:focus-visible { outline: 2px solid #fbbf24; outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
    #homeScreen *, #homeScreen *::before, #homeScreen *::after {
        transition: none !important;
        animation: none !important;
    }
}