/* =====================================================================
   MUKO — Ana ekran tasarım sistemi
   Ana ekran, başlık, çözüm ekranı kromu, diyalog, bildirim ve bekleme ekranı.
   index.html'de en son yüklenir; eski genel kuralların (unified-safe-area.css,
   style.css) üstüne yazmak için sınıf seçicileri kullanır.
   ===================================================================== */

:root {
    --mk-bg: #f5f7fb;
    --mk-surface: #ffffff;
    --mk-ink: #121a33;
    --mk-ink-2: #4b5675;
    --mk-ink-3: #8790a8;
    --mk-line: #e6e9f2;
    --mk-primary: #3b5bfd;
    --mk-primary-press: #2e4be6;
    --mk-primary-50: #eef2ff;
    --mk-primary-100: #dde4ff;
    --mk-gold-1: #ffd979;
    --mk-gold-2: #ffae3d;
    --mk-gold-ink: #5b2f00;
    --mk-success: #12a35f;
    --mk-success-50: #e7f8ef;
    --mk-warning: #d97706;
    --mk-warning-50: #fff4e2;
    --mk-danger: #e5484d;
    --mk-danger-50: #feecec;
    --mk-radius-xl: 28px;
    --mk-radius-lg: 18px;
    --mk-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --mk-shadow-card: 0 1px 2px rgba(18, 26, 51, .05), 0 18px 40px -24px rgba(18, 26, 51, .3);
}

[hidden] { display: none !important; }

body.mk-body {
    background: var(--mk-bg);
    color: var(--mk-ink);
    font-family: var(--mk-font);
}

.mk-body :focus-visible {
    outline: 3px solid rgba(59, 91, 253, .45);
    outline-offset: 2px;
}

.mk-body .skip-link {
    position: absolute;
    left: -9999px;
    top: 8px;
    z-index: 200;
    padding: 10px 14px;
    border-radius: 12px;
    background: var(--mk-ink);
    color: #fff;
}
.mk-body .skip-link:focus { left: 12px; }

/* ── Ortak butonlar ─────────────────────────────────────────────────── */
.mk-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    height: 52px;
    padding: 0 20px;
    border: none;
    border-radius: 16px;
    font: 600 16px/1 var(--mk-font);
    letter-spacing: -.01em;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: transform .12s ease, background-color .15s ease, box-shadow .15s ease, opacity .15s ease;
}
.mk-btn:active { transform: scale(.98); }
.mk-btn:disabled { opacity: .55; cursor: default; transform: none; }
.mk-btn svg { display: block; flex-shrink: 0; }
.mk-btn--primary {
    background: var(--mk-primary);
    color: #fff;
    box-shadow: 0 12px 24px -12px rgba(59, 91, 253, .8);
}
.mk-btn--primary:hover { background: var(--mk-primary-press); }
.mk-btn--secondary { background: var(--mk-primary-50); color: var(--mk-primary-press); }
.mk-btn--ghost { height: 44px; background: transparent; color: var(--mk-ink-2); box-shadow: none; }
.mk-btn--premium {
    background: linear-gradient(135deg, var(--mk-gold-1), var(--mk-gold-2));
    color: var(--mk-gold-ink);
    box-shadow: 0 12px 24px -14px rgba(255, 150, 40, .95);
}
.mk-btn--premium-outline { background: #fff5e3; color: #8a4600; }

/* ── Başlık ─────────────────────────────────────────────────────────── */
header.mk-header {
    background: var(--mk-bg);
    border-bottom: none;
    box-shadow: none;
}
.mk-header .mk-header-inner {
    max-width: 720px;
    margin: 0 auto;
}
.mk-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}
.mk-brand-mark {
    display: grid;
    place-items: center;
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: radial-gradient(circle at 50% 38%, #1f3fb4 0%, #0b1230 78%);
    box-shadow: 0 6px 14px -7px rgba(11, 18, 48, .75);
    flex-shrink: 0;
}
.mk-brand-mark svg { display: block; }
.mk-brand-name {
    font-size: 19px;
    font-weight: 800;
    letter-spacing: .08em;
    color: var(--mk-ink);
}
.mk-header .mk-header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}
.mk-header .mk-premium-btn {
    width: auto;
    min-width: 0;
    max-width: none;
    height: 36px;
    min-height: 36px;
    max-height: 36px;
    padding: 0 14px 0 11px;
    gap: 6px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--mk-gold-1), var(--mk-gold-2));
    color: var(--mk-gold-ink);
    font: 700 14px/1 var(--mk-font);
    box-shadow: 0 8px 18px -10px rgba(255, 150, 40, .95);
}
.mk-header .mk-premium-btn svg { width: 16px; height: 16px; }
.mk-header .mk-premium-btn.is-pro { background: var(--mk-ink); color: var(--mk-gold-1); box-shadow: none; }
.mk-header .mk-premium-label { display: inline !important; }
.mk-header .mk-avatar-btn {
    width: 38px;
    height: 38px;
    min-width: 38px;
    max-width: 38px;
    border-radius: 50%;
    background: #fff;
    border: 1px solid var(--mk-line);
    color: var(--mk-ink-2);
    box-shadow: 0 1px 2px rgba(18, 26, 51, .06);
}
.mk-header .mk-avatar-initial {
    display: inline !important;
    font: 700 15px/1 var(--mk-font);
    color: var(--mk-primary);
    text-transform: uppercase;
}
.mk-header .mk-avatar-btn:active,
.mk-header .mk-premium-btn:active { transform: scale(.95); }

/* ── Ana içerik alanı ───────────────────────────────────────────────── */
#main-content.mk-main { background: var(--mk-bg); }
.mk-body.has-bottom-bar #main-content.mk-main {
    padding-bottom: calc(env(safe-area-inset-bottom, 0px) + 104px);
}

/* ── Ana ekran ──────────────────────────────────────────────────────── */
.mk-home {
    display: flex;
    flex-direction: column;
    min-height: 100%;
    max-width: 520px;
    margin: 0 auto;
    padding: 4px 2px 8px;
}
.mk-hero { padding: 8px 2px 24px; }
.mk-greeting {
    margin: 0 0 6px;
    font-size: 15px;
    font-weight: 600;
    color: var(--mk-primary);
}
.mk-title {
    margin: 0;
    font-size: clamp(27px, 7.6vw, 34px);
    font-weight: 800;
    line-height: 1.12;
    letter-spacing: -.03em;
    color: var(--mk-ink);
}
.mk-subtitle {
    margin: 10px 0 0;
    font-size: 16px;
    line-height: 1.5;
    color: var(--mk-ink-2);
}

/* Büyük "Soru çek" kartı: kareli defter + vizör köşeleri */
.mk-capture {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: clamp(236px, 34vh, 320px);
    padding: 34px 20px 30px;
    border: none;
    border-radius: var(--mk-radius-xl);
    background: var(--mk-surface);
    box-shadow: var(--mk-shadow-card);
    cursor: pointer;
    overflow: hidden;
    -webkit-tap-highlight-color: transparent;
    transition: transform .15s ease, box-shadow .15s ease;
}
.mk-capture::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(59, 91, 253, .085) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 91, 253, .085) 1px, transparent 1px);
    background-size: 22px 22px;
    background-position: center center;
    -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 78%);
    mask-image: radial-gradient(ellipse at center, #000 30%, transparent 78%);
    pointer-events: none;
}
.mk-capture:active { transform: scale(.985); box-shadow: 0 1px 2px rgba(18, 26, 51, .05), 0 10px 26px -20px rgba(18, 26, 51, .3); }
.mk-capture > * { position: relative; }
.mk-capture-corners i {
    position: absolute;
    width: 34px;
    height: 34px;
    border: 0 solid var(--mk-primary);
}
.mk-capture-corners i:nth-child(1) { top: 18px; left: 18px; border-top-width: 3.5px; border-left-width: 3.5px; border-top-left-radius: 13px; }
.mk-capture-corners i:nth-child(2) { top: 18px; right: 18px; border-top-width: 3.5px; border-right-width: 3.5px; border-top-right-radius: 13px; }
.mk-capture-corners i:nth-child(3) { bottom: 18px; left: 18px; border-bottom-width: 3.5px; border-left-width: 3.5px; border-bottom-left-radius: 13px; }
.mk-capture-corners i:nth-child(4) { bottom: 18px; right: 18px; border-bottom-width: 3.5px; border-right-width: 3.5px; border-bottom-right-radius: 13px; }
.mk-capture-corners { position: absolute; inset: 0; }
.mk-capture-lens {
    display: grid;
    place-items: center;
    width: 78px;
    height: 78px;
    margin-bottom: 16px;
    border-radius: 50%;
    background: var(--mk-primary);
    color: #fff;
    box-shadow: 0 0 0 10px rgba(59, 91, 253, .12), 0 16px 30px -10px rgba(59, 91, 253, .75);
    animation: mk-breathe 2.8s ease-in-out infinite;
}
.mk-capture-lens svg { display: block; }
@keyframes mk-breathe {
    50% { box-shadow: 0 0 0 15px rgba(59, 91, 253, .07), 0 16px 30px -10px rgba(59, 91, 253, .75); }
}
.mk-capture-label {
    font-size: 21px;
    font-weight: 800;
    letter-spacing: -.02em;
    color: var(--mk-ink);
}
.mk-capture-caption {
    margin-top: 4px;
    font-size: 14px;
    color: var(--mk-ink-3);
}

.mk-gallery {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    height: 56px;
    margin-top: 12px;
    border: 1px solid var(--mk-line);
    border-radius: var(--mk-radius-lg);
    background: var(--mk-surface);
    color: var(--mk-ink);
    font: 600 16px/1 var(--mk-font);
    letter-spacing: -.01em;
    box-shadow: 0 1px 2px rgba(18, 26, 51, .05);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: transform .12s ease;
}
.mk-gallery:active { transform: scale(.98); }
.mk-gallery svg { display: block; color: var(--mk-primary); }

/* Soru hakkı göstergesi */
.mk-quota {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: fit-content;
    max-width: 100%;
    margin: 18px auto 0;
    padding: 8px 14px;
    border: 1px solid var(--mk-line);
    border-radius: 999px;
    background: rgba(255, 255, 255, .75);
    font-size: 13.5px;
    font-weight: 500;
    color: var(--mk-ink-2);
}
.mk-quota b { color: var(--mk-ink); font-weight: 700; }
.mk-quota-dots { display: inline-flex; gap: 4px; }
.mk-quota-dots i { width: 7px; height: 7px; border-radius: 50%; background: var(--mk-primary-100); }
.mk-quota-dots i.is-on { background: var(--mk-primary); }
.mk-quota--premium {
    border-color: #ffe0ad;
    background: linear-gradient(135deg, #fff8e8, #fff1d6);
    color: #7a4300;
}
.mk-quota--premium svg { color: #e48a00; display: block; }
.mk-quota--premium b { color: #7a4300; }

/* Hak bitti kartı */
.mk-out {
    padding: 30px 20px 20px;
    border-radius: var(--mk-radius-xl);
    background: var(--mk-surface);
    box-shadow: var(--mk-shadow-card);
    text-align: center;
}
.mk-out-icon {
    display: grid;
    place-items: center;
    width: 58px;
    height: 58px;
    margin: 0 auto 14px;
    border-radius: 18px;
    background: linear-gradient(135deg, #fff3dc, #ffe2bd);
    color: #c26a00;
}
.mk-out-title {
    margin: 0;
    font-size: 19px;
    font-weight: 800;
    letter-spacing: -.015em;
    color: var(--mk-ink);
}
.mk-out-text {
    margin: 6px 0 0;
    font-size: 14.5px;
    line-height: 1.5;
    color: var(--mk-ink-2);
}
.mk-out-actions { display: grid; gap: 10px; margin-top: 20px; }
.mk-home.is-out .mk-capture,
.mk-home.is-out .mk-gallery,
.mk-home.is-out .mk-tips { display: none; }

/* İpuçları */
.mk-tips {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px 18px;
    margin: 0;
    padding: 26px 0 4px;
    list-style: none;
}
.mk-tips li {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--mk-ink-3);
}
.mk-tips svg { display: block; }

/* ── Çözüm ekranı ───────────────────────────────────────────────────── */
.mk-solution-view {
    max-width: 720px;
    margin: 0 auto;
}

.mk-bottom-bar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 40;
    padding: 18px max(16px, env(safe-area-inset-right, 0px)) calc(env(safe-area-inset-bottom, 0px) + 12px) max(16px, env(safe-area-inset-left, 0px));
    background: linear-gradient(180deg, rgba(245, 247, 251, 0) 0%, rgba(245, 247, 251, .94) 38%, var(--mk-bg) 100%);
    pointer-events: none;
}
.mk-bottom-bar .mk-btn {
    display: flex;
    max-width: 560px;
    height: 56px;
    margin: 0 auto;
    border-radius: var(--mk-radius-lg);
    font-size: 17px;
    pointer-events: auto;
}

/* Soru fotoğrafı görüntüleyici */
.mk-lightbox {
    position: fixed;
    inset: 0;
    z-index: 10150;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(env(safe-area-inset-top, 0px) + 64px) 14px calc(env(safe-area-inset-bottom, 0px) + 28px);
    background: rgba(6, 10, 22, .94);
    opacity: 0;
    transition: opacity .2s ease;
}
.mk-lightbox.is-open { opacity: 1; }
.mk-lightbox img {
    display: block;
    max-width: 100%;
    max-height: 100%;
    border-radius: 12px;
    background: #fff;
    object-fit: contain;
}
.mk-lightbox-close {
    position: absolute;
    top: calc(env(safe-area-inset-top, 0px) + 10px);
    right: 14px;
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, .14);
    color: #fff;
    cursor: pointer;
}

/* ── Diyalog ────────────────────────────────────────────────────────── */
.mk-dialog-backdrop {
    position: fixed;
    inset: 0;
    z-index: 10100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(12, 18, 38, .42);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    opacity: 0;
    transition: opacity .2s ease;
    font-family: var(--mk-font);
}
.mk-dialog-backdrop.is-open { opacity: 1; }
.mk-dialog {
    width: 100%;
    max-width: 360px;
    padding: 28px 22px 16px;
    border-radius: var(--mk-radius-xl);
    background: #fff;
    text-align: center;
    box-shadow: 0 30px 80px -30px rgba(12, 18, 38, .55);
    transform: translateY(14px) scale(.98);
    transition: transform .24s cubic-bezier(.2, .8, .2, 1);
}
.mk-dialog-backdrop.is-open .mk-dialog { transform: none; }
.mk-dialog-icon {
    display: grid;
    place-items: center;
    width: 56px;
    height: 56px;
    margin: 0 auto 14px;
    border-radius: 18px;
}
.mk-tone-info { background: var(--mk-primary-50); color: var(--mk-primary); }
.mk-tone-error { background: var(--mk-danger-50); color: var(--mk-danger); }
.mk-tone-warning { background: var(--mk-warning-50); color: var(--mk-warning); }
.mk-tone-success { background: var(--mk-success-50); color: var(--mk-success); }
.mk-tone-premium { background: linear-gradient(135deg, #fff3dc, #ffe2bd); color: #c26a00; }
.mk-dialog-title {
    margin: 0 0 8px;
    font-size: 19px;
    font-weight: 800;
    line-height: 1.3;
    letter-spacing: -.015em;
    color: var(--mk-ink);
}
.mk-dialog-text {
    margin: 0 0 4px;
    font-size: 15px;
    line-height: 1.5;
    color: var(--mk-ink-2);
}
.mk-dialog-actions { display: grid; gap: 8px; margin-top: 20px; }

/* ── Bildirim (toast) ───────────────────────────────────────────────── */
.mk-toast {
    position: fixed;
    left: 50%;
    top: calc(env(safe-area-inset-top, 0px) + 12px);
    z-index: 10200;
    display: flex;
    align-items: center;
    gap: 10px;
    width: max-content;
    max-width: calc(100% - 32px);
    padding: 12px 16px;
    border-radius: 16px;
    background: var(--mk-ink);
    color: #fff;
    font: 500 14.5px/1.4 var(--mk-font);
    box-shadow: 0 16px 40px -16px rgba(12, 18, 38, .65);
    opacity: 0;
    transform: translate(-50%, -14px);
    transition: opacity .2s ease, transform .2s ease;
}
.mk-toast.is-visible { opacity: 1; transform: translate(-50%, 0); }
.mk-toast-icon { display: grid; place-items: center; flex-shrink: 0; color: #93b4ff; }
.mk-toast-icon svg { display: block; }
.mk-toast--success .mk-toast-icon { color: #4ade80; }
.mk-toast--error .mk-toast-icon { color: #f87171; }
.mk-toast--warning .mk-toast-icon { color: #fbbf24; }

/* ── Çözüm bekleme ekranı ───────────────────────────────────────────── */
.mk-solving {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(env(safe-area-inset-top, 0px) + 24px) 24px calc(env(safe-area-inset-bottom, 0px) + 24px);
    background: rgba(245, 247, 251, .95);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    font-family: var(--mk-font);
    opacity: 0;
    transition: opacity .25s ease;
}
.mk-solving.is-open { opacity: 1; }
.mk-solving-card { width: 100%; max-width: 340px; text-align: center; }
.mk-solving-photo {
    position: relative;
    width: fit-content;
    max-width: 100%;
    margin: 0 auto 28px;
    padding: 6px;
    border-radius: 24px;
    background: #fff;
    overflow: hidden;
    box-shadow: 0 1px 2px rgba(18, 26, 51, .06), 0 26px 50px -26px rgba(18, 26, 51, .45);
}
.mk-solving-photo img {
    display: block;
    max-width: 100%;
    max-height: 34vh;
    border-radius: 18px;
    object-fit: contain;
}
.mk-solving-photo--empty {
    display: grid;
    place-items: center;
    width: 120px;
    height: 120px;
    color: var(--mk-primary);
}
.mk-solving-beam {
    position: absolute;
    left: 6px;
    right: 6px;
    top: 0;
    height: 56px;
    background: linear-gradient(180deg, rgba(34, 211, 238, 0) 0%, rgba(59, 91, 253, .16) 72%, rgba(59, 91, 253, .55) 96%, #22d3ee 100%);
    border-bottom: 2px solid #22d3ee;
    /* filter: drop-shadow WebKit'te backdrop-filter'lı üst öğe içinde çizilmiyor; parıltı box-shadow ile */
    box-shadow: 0 6px 14px -6px rgba(34, 211, 238, .9);
    animation: mk-scan 2.2s cubic-bezier(.45, 0, .55, 1) infinite;
    pointer-events: none;
}
@keyframes mk-scan {
    0% { top: -56px; opacity: 0; }
    12% { opacity: 1; }
    88% { opacity: 1; }
    100% { top: 100%; opacity: 0; }
}
.mk-solving.is-complete .mk-solving-beam { display: none; }
.mk-solving-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 30px;
    margin: 0;
    font-size: 21px;
    font-weight: 800;
    letter-spacing: -.02em;
    color: var(--mk-ink);
}
.mk-solving-title svg { display: block; }
.mk-solving-title.is-done { color: var(--mk-success); }
.mk-solving-progress { display: flex; gap: 6px; width: 180px; margin: 16px auto 0; }
.mk-solving-seg {
    position: relative;
    flex: 1;
    height: 5px;
    overflow: hidden;
    border-radius: 999px;
    background: var(--mk-primary-100);
}
.mk-solving-seg i {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: var(--mk-primary);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform .45s ease;
}
.mk-solving-seg.is-active i { animation: mk-fill 3.4s cubic-bezier(.2, .7, .3, 1) forwards; }
.mk-solving-seg.is-done i { animation: none; transform: scaleX(1); }
@keyframes mk-fill { from { transform: scaleX(.06); } to { transform: scaleX(.86); } }
.mk-solving-note {
    min-height: 20px;
    margin: 14px 0 0;
    font-size: 14px;
    line-height: 1.45;
    color: var(--mk-ink-3);
}
.mk-solving-note.is-warning { color: #b45309; }
.mk-solving-cancel {
    margin-top: 16px;
    height: 44px;
    padding: 0 20px;
    border: none;
    border-radius: 999px;
    background: rgba(18, 26, 51, .06);
    color: var(--mk-ink-2);
    font: 600 15px/1 var(--mk-font);
    cursor: pointer;
}

/* ── Hareket azaltma ───────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    .mk-capture-lens,
    .mk-solving-beam,
    .mk-solving-seg.is-active i { animation: none; }
    .mk-solving-seg.is-active i { transform: scaleX(.6); }
    .mk-dialog,
    .mk-dialog-backdrop,
    .mk-toast,
    .mk-solving,
    .mk-lightbox { transition: none; }
}

/* ── Kısa ekranlar (iPhone SE vb.) ─────────────────────────────────── */
@media (max-height: 700px) {
    .mk-hero { padding-bottom: 16px; }
    .mk-subtitle { display: none; }
    .mk-capture { min-height: 200px; padding: 26px 20px 22px; }
    .mk-capture-lens { width: 68px; height: 68px; margin-bottom: 12px; }
    .mk-tips { padding-top: 18px; }
}