/* ============================================
   BİLNET OYUN - Ana Stil Dosyası (hub kabuğu)
   Token'lar css/tokens.css'te (B1) — burada ham renk/yazı/yarıçap değeri YAZILMAZ,
   yalnız var(--…) okunur. Sözleşme: docs/tasarim-sozlesmesi.md.
   ============================================ */

/* Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html, body {
    overflow-x: hidden;
    max-width: 100vw;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: var(--font-body);
    background: var(--gok-ust);
    color: var(--metin);
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    user-select: none;
    touch-action: manipulation;
}

/* Tarayıcı yüzeyleri de paletten: metin seçimi ve imleç */
::selection { background: var(--gunes); color: var(--murekkep); }
input, textarea { caret-color: var(--mavi-800); }

/* Tipografi */
h1, h2, h3, .display-font {
    font-family: var(--font-display);
}

button {
    font-family: var(--font-display);
    cursor: pointer;
    border: none;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

/* Odak halkası: TEK kural — klavye/ekran okuyucu kullanıcısı için her odaklanabilir öğede aynı
   3 px mavi-800 halka + 3 px boşluk (WCAG 2.4.7; sözleşme §2). Fare/dokunmada :focus-visible
   tetiklenmez. Kendi halkasını çizen bileşen (.imza, özgüllük 0,2,0) ezer. */
:focus-visible {
    outline: 3px solid var(--mavi-800);
    outline-offset: 3px;
}

/* Utility Classes */
.hidden { display: none !important; }

/* Uygulama bildirimi (#app-toast — js/errors.js HubToast; app.js/auth.js kullanır).
   Durağan hâlde görünmez; .show ile belirir. */
#app-toast {
    position: fixed;
    left: 50%;
    bottom: var(--ara-5);
    transform: translateX(-50%);
    z-index: 99999;
    max-width: 90%;
    padding: var(--ara-3) var(--ara-5);
    border-radius: var(--r-hap);
    background: var(--murekkep);
    color: var(--beyaz);
    font-weight: 700;
    text-align: center;
    box-shadow: var(--golge-3);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--sure-gecis) var(--egri-out);
}
#app-toast.show { opacity: 1; }

/* ============================================
   SPLASH SCREEN
   ============================================ */
.splash-screen {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(180deg, var(--gok-ust) 0%, var(--gok-alt) 50%, var(--cim) 50%, var(--cim-koyu) 100%);
    overflow: hidden;
}

.splash-content {
    position: relative;
    z-index: 2;
    text-align: center;
    animation: fadeInUp 0.8s var(--egri-out) both;
}

.splash-sun {
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, var(--gunes) 70%, transparent 71%);
    border-radius: 50%;
    margin: 0 auto var(--ara-5);
    animation: sunPulse 3s ease-in-out infinite;
    box-shadow: 0 0 60px var(--gunes-isik);
}

.splash-title {
    font-family: var(--yazi-hub-aile);
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: var(--yazi-hub-kalinlik);
    line-height: var(--yazi-hub-satir);
    color: var(--murekkep);
    margin-bottom: var(--ara-2);
}

.splash-subtitle-brand {
    font-family: var(--font-display);
    font-size: clamp(1.2rem, 3.5vw, 1.8rem);
    font-weight: 600;
    color: var(--murekkep);
    margin-top: -0.3rem;
}
.splash-subtitle {
    font-family: var(--font-display);
    font-size: clamp(1rem, 2.5vw, 1.4rem);
    color: var(--murekkep);
    margin-bottom: var(--ara-6);
    font-weight: 500;
}

/* Birincil düğme: mavi-800 dolgu, beyaz metin (5.3:1), beyaz çıkartma konturu, hap */
.splash-btn {
    position: relative;
    font-size: clamp(1.4rem, 4vw, 1.9rem);
    font-weight: var(--yazi-dugme-kalinlik);
    padding: var(--ara-4) 56px;
    background: var(--dugme-dolgu);
    color: var(--dugme-metin);
    border: var(--kontur);
    border-radius: var(--r-hap);
    box-shadow: var(--golge-2);
    transition: transform var(--sure-bas) var(--egri-out), box-shadow var(--sure-bas) var(--egri-out);
    /* backwards (both değil): giriş bitince animasyon transform'u bırakır → :active basma çalışır */
    animation: bounceIn 0.6s var(--egri-out) backwards 0.4s,
               pulseGlow 2s ease-in-out 1.2s infinite;
    min-height: var(--ara-8);
}

.splash-btn::after {
    content: '';
    position: absolute;
    bottom: -32px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 12px solid transparent;
    border-right: 12px solid transparent;
    border-top: 16px solid var(--beyaz);
    opacity: 0.7;
    animation: float 1.2s ease-in-out 2s infinite both;
    pointer-events: none;
}

.splash-btn:active {
    transform: scale(0.97);
    box-shadow: var(--golge-1);
}

/* ── Giriş Ekranı (Google / Misafir) ── */
.login-screen {
    position: fixed;
    inset: 0;
    z-index: 1100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--ara-5);
    background: linear-gradient(180deg, var(--gok-ust) 0%, var(--gok-alt) 50%, var(--cim) 50%, var(--cim-koyu) 100%);
    overflow: auto;
}
.login-card {
    position: relative;
    width: 100%;
    max-width: 420px;
    text-align: center;
    background: var(--yuzey);
    border: var(--kontur);
    border-radius: var(--r-kart);
    box-shadow: var(--golge-3);
    padding: var(--ara-6) var(--ara-5) var(--ara-5);
    animation: fadeInUp 0.6s var(--egri-out) both;
}
.login-sun {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--ara-4);
    background: radial-gradient(circle, var(--gunes) 70%, transparent 71%);
    border-radius: 50%;
    box-shadow: 0 0 50px var(--gunes-isik);
    animation: sunPulse 3s ease-in-out infinite;
}
.login-title {
    font-family: var(--yazi-hub-aile);
    font-size: clamp(1.6rem, 5vw, 2.2rem);
    font-weight: var(--yazi-hub-kalinlik);
    line-height: var(--yazi-hub-satir);
    color: var(--murekkep);
    margin: 0 0 var(--ara-1);
}
.login-sub {
    color: var(--murekkep-orta);
    font-size: 1.02rem;
    margin: 0 0 var(--ara-5);
}
.login-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--ara-3);
    width: 100%;
    min-height: var(--hedef-min);
    font-family: var(--yazi-dugme-aile);
    font-size: var(--yazi-dugme-boy);
    font-weight: var(--yazi-dugme-kalinlik);
    padding: 14px var(--ara-5);
    border: var(--kontur);
    border-radius: var(--r-hap);
    cursor: pointer;
    transition: transform var(--sure-bas) var(--egri-out), box-shadow var(--sure-bas) var(--egri-out), opacity var(--sure-bas) var(--egri-out);
    margin-bottom: var(--ara-4);
}
.login-btn:active { transform: scale(0.97); }
.login-btn:disabled { opacity: 0.6; cursor: default; }
/* İkincil: beyaz yüzey, mavi-800 metin ve iç halka (tuval "İkincil") */
.login-google {
    background: var(--yuzey);
    color: var(--mavi-800);
    box-shadow: 0 0 0 3px var(--mavi-800) inset, var(--golge-2);
}
/* Birincil: misafir yolu tek dokunuş (sözleşme §3.01) */
.login-guest {
    background: var(--dugme-dolgu);
    color: var(--dugme-metin);
    box-shadow: var(--golge-2);
}
.login-note {
    font-size: 0.82rem;
    color: var(--murekkep-orta);   /* beyazda 6.3:1 */
    line-height: 1.5;
    margin: var(--ara-2) 2px 0;
}
.login-error {
    background: var(--yanlis-zemin);
    color: var(--yanlis);
    border-radius: var(--r-giris);
    padding: 10px 14px;
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: var(--ara-4);
}

/* ── Üst bar hesap çipi (avatar/ikon → açılır menü) ── */
.user-chip {
    position: relative;
    display: flex;
    align-items: center;
}
.user-chip:empty { display: none; }
.user-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    background: var(--mavi-050);
    color: var(--mavi-800);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: transform var(--sure-bas) var(--egri-out), background-color var(--sure-gecis) var(--egri-out);
}
.user-toggle:hover { background: var(--cizgi); }
.user-toggle:active { transform: scale(0.94); }
.user-toggle svg { width: 22px; height: 22px; display: block; }
.user-toggle .user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--beyaz);
}
/* Hesap menüsü: modal OLMAYAN <dialog> (js/auth.js → Dialog.open(menu, { modal: false })) — perde yok,
   arka plan inert değil; Escape, dışarı tık ve odak kaçışı kapatır. UA dialog stilleri (inset-inline 0,
   fit-content, kenar, dolgu, Canvas zemin) burada sıfırlanır; popover tetikleyiciden açılır (sağ üst). */
.user-menu {
    position: absolute;
    top: calc(100% + var(--ara-2));
    right: 0;
    left: auto;
    margin: 0;
    border: 0;
    height: auto;
    max-height: none;
    overflow: visible;
    min-width: 180px;
    max-width: 240px;
    background: var(--yuzey);
    color: var(--metin);
    border-radius: var(--r-giris);
    box-shadow: var(--golge-3);
    padding: var(--ara-3);
    z-index: 200;
    flex-direction: column;
    gap: var(--ara-1);
    transform-origin: top right;
    animation: fadeInUp 0.18s var(--egri-out) both;
}
.user-menu[open] { display: flex; }
.user-menu:not([open]) { display: none; }
.user-menu-name {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--murekkep);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.user-menu-email {
    font-size: 0.78rem;
    color: var(--murekkep-orta);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.user-menu-signout {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--ara-2);
    margin-top: var(--ara-2);
    min-height: 44px;
    background: var(--dugme-dolgu);
    color: var(--dugme-metin);
    border: none;
    border-radius: var(--r-hap);
    padding: 10px;
    cursor: pointer;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.9rem;
    transition: transform var(--sure-bas) var(--egri-out);
}
.user-menu-signout svg { width: 18px; height: 18px; }
.user-menu-signout:active { transform: scale(0.97); }
@media (max-width: 640px) {
    /* üst barda yer aç → hesap çipi her zaman görünür kalır.
       .top-bar öneki: temel .top-title{display:flex} kuralını özgüllükle yener */
    .top-bar .top-title { display: none; }
}

.splash-clouds {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.cloud {
    position: absolute;
    background: var(--beyaz);
    border-radius: 100px;
    opacity: 0.9;
}

.cloud::before, .cloud::after {
    content: '';
    position: absolute;
    background: var(--beyaz);
    border-radius: 50%;
}

.cloud-1 {
    width: 120px; height: 40px;
    top: 10%; left: -120px;
    animation: cloudFloat 18s linear infinite;
}
.cloud-1::before { width: 50px; height: 50px; top: -25px; left: 20px; }
.cloud-1::after { width: 70px; height: 60px; top: -30px; left: 50px; }

.cloud-2 {
    width: 150px; height: 45px;
    top: 20%; left: -150px;
    animation: cloudFloat 24s linear infinite 6s;
}
.cloud-2::before { width: 60px; height: 55px; top: -28px; left: 25px; }
.cloud-2::after { width: 80px; height: 65px; top: -32px; left: 60px; }

.cloud-3 {
    width: 100px; height: 35px;
    top: 8%; left: -100px;
    animation: cloudFloat 20s linear infinite 12s;
}
.cloud-3::before { width: 45px; height: 45px; top: -22px; left: 15px; }
.cloud-3::after { width: 55px; height: 50px; top: -25px; left: 40px; }

.cloud-4 {
    width: 130px; height: 38px;
    top: 15%; left: -130px;
    animation: cloudFloat 22s linear infinite 3s;
}
.cloud-4::before { width: 55px; height: 50px; top: -25px; left: 22px; }
.cloud-4::after { width: 65px; height: 55px; top: -28px; left: 55px; }

.splash-ground {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 30%;
    background: linear-gradient(180deg, var(--cim), var(--cim-koyu));
    z-index: 0;
}

/* ============================================
   TOP BAR
   ============================================ */
.top-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: 64px;
    display: flex;
    align-items: center;
    gap: var(--ara-2);
    padding: 0 var(--ara-4);
    background: var(--yuzey-cam);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--golge-1);
}

.top-btn {
    width: var(--hedef-min);
    height: var(--hedef-min);
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    color: var(--murekkep);
    border-radius: var(--r-giris);
    transition: transform var(--sure-gecis) var(--egri-out), background-color var(--sure-gecis) var(--egri-out);
}

.top-btn svg {
    width: 26px;
    height: 26px;
}

.top-btn:active {
    transform: scale(0.9);
    background: var(--basili-zemin);
}

/* Ev karosu: mavi dolgu, beyaz kontur (sözleşme §2 üst şerit) */
.home-btn {
    margin-right: var(--ara-2);
    background: var(--mavi-500);
    color: var(--murekkep);
    border: 3px solid var(--beyaz);
    box-shadow: var(--golge-1);
}
.home-btn:active { background: var(--mavi-700); }

.top-title {
    flex-shrink: 0;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--murekkep);
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}
.top-brand {
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}
.top-sub {
    font-family: var(--font-body);
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--murekkep-orta);   /* beyazda 6.3:1 */
    letter-spacing: 0.5px;
    text-align: center;
}

.top-spacer { flex: 1; min-width: 0; }

.top-right {
    display: flex;
    align-items: center;
    gap: var(--ara-1);
}

/* Öğretmen anahtarı (B2b, role=switch): beyaz hap + etiket + ray/düğme; açıkken ray mavi-800.
   Durum yalnız renkle değil: düğme konumu + aria-checked. ≤ 640 px'te etiket ekran okuyucuya kalır, simge görünür. */
.top-switch {
    display: inline-flex;
    align-items: center;
    gap: var(--ara-2);
    min-height: 44px;
    padding: 0 var(--ara-3) 0 var(--ara-3);
    margin-left: var(--ara-1);
    background: var(--yuzey);
    color: var(--murekkep);
    border: 3px solid var(--beyaz);
    border-radius: var(--r-hap);
    box-shadow: var(--golge-1);
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 600;
    white-space: nowrap;
    transition: transform var(--sure-bas) var(--egri-out), box-shadow var(--sure-gecis) var(--egri-out);
}
.top-switch:hover { box-shadow: var(--golge-2); }
.top-switch:active { transform: scale(0.97); }
.top-switch .switch-ico {
    width: 22px;
    height: 22px;
    flex: none;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}
.top-switch .switch-track {
    position: relative;
    flex: none;
    width: 38px;
    height: 22px;
    border-radius: var(--r-hap);
    background: var(--cizgi);
    box-shadow: inset 0 0 0 2px var(--cizgi);
    transition: background-color var(--sure-gecis) var(--egri-out), box-shadow var(--sure-gecis) var(--egri-out);
}
.top-switch .switch-knob {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--beyaz);
    box-shadow: 0 0 0 2px var(--murekkep-orta) inset, var(--golge-1);
    transition: transform var(--sure-gecis) var(--egri-out), box-shadow var(--sure-gecis) var(--egri-out);
}
.top-switch[aria-checked="true"] .switch-track { background: var(--mavi-800); box-shadow: inset 0 0 0 2px var(--mavi-800); }
.top-switch[aria-checked="true"] .switch-knob { transform: translateX(16px); box-shadow: 0 0 0 2px var(--mavi-800) inset, var(--golge-1); }
.top-switch[aria-checked="true"] { color: var(--mavi-800); }
@media (max-width: 640px) {
    /* Dar üst bar tek satırda kalır: ev/ses 44 px, sayaçlar sıkı, anahtar yalnız simge (durum: dolgu + aria-checked) */
    .top-bar { padding: 0 var(--ara-3); gap: var(--ara-1); flex-wrap: nowrap; }
    .top-btn, .home-btn { width: 44px; height: 44px; }
    .home-btn { margin-right: 0; }
    .star-counter { padding: 6px 8px; margin-right: 0; min-height: 40px; }
    .top-switch { width: 44px; min-width: 44px; padding: 0; justify-content: center; margin-left: 0; }
    .top-switch .switch-track { display: none; }
    .top-switch[aria-checked="true"] { background: var(--mavi-800); color: var(--beyaz); }
    .top-switch .switch-label {
        position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden;
        clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
    }
}

.star-counter {
    display: flex;
    align-items: center;
    gap: var(--ara-1);
    min-height: 44px;
    background: var(--yildiz-zemin);
    padding: var(--ara-2) 14px;
    border-radius: var(--r-hap);
    margin-right: var(--ara-2);
}
.coin-counter { background: var(--mavi-050); }

.star-icon {
    width: 24px;
    height: 24px;
    fill: var(--yildiz);
}

.star-counter span {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--murekkep);
}

.sound-btn .sound-off,
.sound-btn.muted .sound-on {
    display: none;
}
.sound-btn.muted .sound-off {
    display: block;
}

/* ============================================
   APP CONTAINER
   ============================================ */
.app {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
}

/* ============================================
   SEVIYE TAMAMLAMA
   ============================================ */
/* #level-complete kabı css/hub.css .dialog'dur (js/dialog.js açar; giriş/çıkış hareketi orada).
   z-index yalnız yedek yolda (showModal yok) anlamlı: konfeti kanvası (600) kartın üstünde kalsın. */
.level-complete { z-index: 500; }

.complete-card {
    background: var(--yuzey);
    border: var(--kontur);
    border-radius: var(--r-kart);
    padding: var(--ara-7) var(--ara-8);
    text-align: center;
    box-shadow: var(--golge-3);
    max-width: 90vw;
}

.complete-title {
    font-size: clamp(2rem, 6vw, 3rem);
    font-weight: 700;
    color: var(--dogru);
    margin-bottom: var(--ara-5);
}

.complete-stars {
    display: flex;
    justify-content: center;
    gap: var(--ara-4);
    margin-bottom: var(--ara-7);
}

.complete-stars .star {
    width: 60px;
    height: 60px;
    fill: var(--yildiz-bos);
    transition: fill 0.4s var(--egri-out), filter 0.4s var(--egri-out);
}

/* Yıldız yapışması: tek yay eğrisi kullanan yer (sözleşme §1 --egri-yay) */
.complete-stars .star.earned {
    fill: var(--yildiz);
    filter: drop-shadow(0 2px 8px var(--yildiz-isik));
    animation: starEarned var(--sure-kutlama) var(--egri-yay) both;
}

.complete-stars .star.earned:nth-child(2) { animation-delay: 0.12s; }
.complete-stars .star.earned:nth-child(3) { animation-delay: 0.24s; }

.complete-buttons {
    display: flex;
    gap: var(--ara-4);
    justify-content: center;
    flex-wrap: wrap;
}

.complete-btn {
    font-size: var(--yazi-dugme-boy);
    font-weight: var(--yazi-dugme-kalinlik);
    min-height: 56px;
    padding: var(--ara-3) 28px;
    border: var(--kontur);
    border-radius: var(--r-hap);
    transition: transform var(--sure-bas) var(--egri-out), box-shadow var(--sure-bas) var(--egri-out);
    min-width: 140px;
    box-shadow: var(--golge-2);
}

.complete-btn:active {
    transform: scale(0.97);
    box-shadow: var(--golge-1);
}

/* "Sonraki" birincil; "Tekrar" / "Oyunlar" ikincil (sözleşme §3.06) */
.next-btn { background: var(--dugme-dolgu); color: var(--dugme-metin); }
.replay-btn, .hub-btn {
    background: var(--yuzey);
    color: var(--mavi-800);
    box-shadow: 0 0 0 3px var(--mavi-800) inset, var(--golge-2);
}

/* ============================================
   PARTICLES CANVAS
   ============================================ */
.particles-canvas {
    position: fixed;
    inset: 0;
    z-index: 600;
    pointer-events: none;
    width: 100%;
    height: 100%;
}

/* SEO İçerik Bloğu */
.seo-content {
    background: linear-gradient(180deg, var(--mavi-050) 0%, var(--gok-alt) 100%);
    padding: 2rem 1rem;
}
.seo-inner {
    max-width: 800px;
    margin: 0 auto;
    font-family: var(--font-body);
    color: var(--metin);
    line-height: 1.7;
}
.seo-inner h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--murekkep);
    margin-bottom: 0.8rem;
}
.seo-inner h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    color: var(--mavi-800);
    margin: 1.2rem 0 0.5rem;
}
.seo-inner p { margin-bottom: 0.6rem; font-size: 0.95rem; }
.seo-inner ul { padding-left: 1.5rem; margin-bottom: 0.8rem; }
.seo-inner li { margin-bottom: 0.3rem; font-size: 0.95rem; }
.seo-inner a { color: var(--mavi-800); text-decoration: underline; }

/* Yalnız ekran okuyucuya görünen metin (başlık hiyerarşisi, etiketler) */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}