/* ═══════════════════════════════════════════════════════════════
   MedQuiz Alzawiyah — design system
   Mobile first; dark only. Arabic UI (RTL), English medical content (LTR).
═══════════════════════════════════════════════════════════════ */
:root {
    --bg:            #070B14;
    --surface:       #0D1422;
    --surface-2:     #121B2D;
    --surface-3:     #19243B;
    --line:          rgba(148, 163, 184, 0.12);
    --line-strong:   rgba(148, 163, 184, 0.24);

    --text:          #EDF2FF;
    --text-2:        #A7B4CA;
    --text-3:        #7D8BA3;

    --accent:        #5B7FFF;
    --accent-2:      #8B5CF6;
    --accent-soft:   rgba(91, 127, 255, 0.14);
    --accent-text:   #AFC0FF;
    --accent-grad:   linear-gradient(135deg, #5B7FFF 0%, #7C5CFF 100%);

    --good:          #22C55E;
    --good-text:     #4ADE80;
    --good-soft:     rgba(34, 197, 94, 0.12);
    --bad:           #F43F5E;
    --bad-text:      #FB7185;
    --bad-soft:      rgba(244, 63, 94, 0.12);
    --warn-text:     #FBBF24;
    --warn-soft:     rgba(245, 158, 11, 0.12);
    --gold-text:     #FCD34D;

    --radius-sm:     10px;
    --radius:        14px;
    --radius-lg:     20px;
    --radius-xl:     26px;

    --shadow-card:   inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 12px 32px -16px rgba(0, 0, 0, 0.7);
    --shadow-pop:    0 24px 64px -16px rgba(0, 0, 0, 0.8);
    --ring-focus:    0 0 0 3px rgba(91, 127, 255, 0.45);

    --font-ui:       'IBM Plex Sans Arabic', 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
    --font-latin:    'Inter', 'IBM Plex Sans Arabic', system-ui, -apple-system, 'Segoe UI', sans-serif;

    --appbar-h:      60px;
    --ease:          cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* ═══════════════════════════════════════════════
   BASE
═══════════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

html {
    background: var(--bg);
    -webkit-text-size-adjust: 100%;
    scroll-padding-top: calc(var(--appbar-h) + 16px);
}
body {
    margin: 0;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    color: var(--text);
    font-family: var(--font-ui);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -webkit-tap-highlight-color: transparent;
}
body::before {               /* soft glow + faint dot grid behind everything */
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background:
        radial-gradient(900px 520px at 50% -12%, rgba(91, 127, 255, 0.17), transparent 62%),
        radial-gradient(520px 380px at 100% 0%, rgba(139, 92, 246, 0.10), transparent 60%),
        radial-gradient(rgba(148, 163, 184, 0.07) 1px, transparent 1.2px) 0 0 / 24px 24px;
    -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 35%, transparent 80%);
    mask-image: linear-gradient(to bottom, #000 0%, #000 35%, transparent 80%);
}

:is([lang="en"], [dir="ltr"], html[lang="de"] body) { font-family: var(--font-latin); }

a { color: var(--accent-text); text-underline-offset: 3px; }
a:hover { color: #fff; }
p { margin: 0; }
h1, h2, h3 { margin: 0; font-weight: 700; line-height: 1.3; }
button, input, select { font: inherit; color: inherit; }
img, svg { display: block; }

:focus-visible { outline: none; box-shadow: var(--ring-focus); }

.sr-only {
    position: absolute !important;
    width: 1px; height: 1px;
    margin: -1px; padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
}

.container {
    width: 100%;
    max-width: 760px;
    margin: 0 auto;
    padding: 20px 16px 40px;
    flex: 1;
}
.page-quiz .container { max-width: 720px; }

/* ═══════════════════════════════════════════════
   APP BAR & FOOTER
═══════════════════════════════════════════════ */
.appbar {
    position: sticky;
    top: 0;
    z-index: 30;
    padding-top: env(safe-area-inset-top);
    background: rgba(7, 11, 20, 0.72);
    -webkit-backdrop-filter: blur(16px) saturate(150%);
    backdrop-filter: blur(16px) saturate(150%);
    border-bottom: 1px solid var(--line);
}
.appbar-inner {
    height: var(--appbar-h);
    max-width: 760px;
    margin: 0 auto;
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
    text-decoration: none;
}
.brand:hover { color: var(--text); }
.brand-mark { width: 32px; height: 32px; border-radius: 9px; box-shadow: 0 6px 16px -6px rgba(91, 127, 255, 0.7); }
.brand-name { font-weight: 800; font-size: 1.05rem; letter-spacing: -0.02em; }
.appbar-actions { display: flex; align-items: center; gap: 8px; }
.appbar-actions form { margin: 0; }

.user-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    max-width: 180px;
    padding: 4px 12px 4px 4px;
    border-radius: 999px;
    background: var(--surface-2);
    border: 1px solid var(--line);
    color: var(--text-2);
    text-decoration: none;
    font-size: 0.85rem;
    transition: border-color 0.2s, color 0.2s;
}
html[dir="rtl"] .user-chip { padding: 4px 4px 4px 12px; }
.user-chip:hover { border-color: var(--line-strong); color: var(--text); }
.user-chip-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.avatar {
    flex-shrink: 0;
    width: 28px; height: 28px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--accent-grad);
    color: #fff;
    font: 700 0.8rem/1 var(--font-latin);
}
.avatar-lg { width: 56px; height: 56px; font-size: 1.4rem; }

.icon-btn {
    flex-shrink: 0;
    width: 40px; height: 40px;
    display: grid;
    place-items: center;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: var(--surface-2);
    color: var(--text-2);
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.icon-btn:hover { background: var(--surface-3); color: var(--text); border-color: var(--line-strong); }

.site-footer {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px 8px;
    padding: 20px 16px calc(24px + env(safe-area-inset-bottom));
    color: var(--text-3);
    font-size: 0.8rem;
    border-top: 1px solid var(--line);
}
.footer-link { color: var(--text-2); font-weight: 500; }
.footer-sep { opacity: 0.5; }
.page-quiz .site-footer { display: none; }   /* nothing should compete with the question */

/* ═══════════════════════════════════════════════
   TYPOGRAPHY & LAYOUT PRIMITIVES
═══════════════════════════════════════════════ */
.page-head { margin: 8px 0 20px; }
.page-title { font-size: 1.6rem; letter-spacing: -0.01em; }
.page-sub { color: var(--text-2); margin-top: 4px; }
.back-link {
    display: inline-block;
    margin-bottom: 10px;
    color: var(--text-2);
    text-decoration: none;
    font-size: 0.9rem;
}

.section { margin-top: 36px; }
.section-head { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.section-title { font-size: 1.2rem; }
.section-pill {
    font: 700 0.66rem/1 var(--font-latin);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent-text);
    background: var(--accent-soft);
    border: 1px solid rgba(91, 127, 255, 0.25);
    padding: 5px 9px;
    border-radius: 999px;
}

.card {
    position: relative;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.025), rgba(255, 255, 255, 0) 120px), var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 14px;
    box-shadow: var(--shadow-card);
}
.card-title { font-size: 1.15rem; margin-bottom: 4px; }
.card-sub { color: var(--text-2); font-size: 0.92rem; margin-bottom: 16px; }

.chip, .tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    white-space: nowrap;
    background: var(--surface-2);
    border: 1px solid var(--line);
    color: var(--text-2);
}
.chip-accent  { background: var(--accent-soft); border-color: rgba(91, 127, 255, 0.3); color: var(--accent-text); }
.chip-success, .tag-good { background: var(--good-soft); border-color: rgba(34, 197, 94, 0.28); color: var(--good-text); }
.tag-bad      { background: var(--bad-soft); border-color: rgba(244, 63, 94, 0.28); color: var(--bad-text); }
.tag-gold     { background: var(--warn-soft); border-color: rgba(245, 158, 11, 0.3); color: var(--gold-text); }
.tag { font-size: 0.72rem; padding: 2px 8px; }

/* ═══════════════════════════════════════════════
   NOTICES & ALERTS
═══════════════════════════════════════════════ */
.notice {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    margin-bottom: 14px;
    border-radius: var(--radius);
    border: 1px solid;
    font-size: 0.92rem;
}
.notice-icon { font-size: 1.2rem; }
.notice-success { background: var(--good-soft); border-color: rgba(34, 197, 94, 0.25); color: #BBF7D0; }
.notice-success strong { color: var(--good-text); }
.notice-gold { background: var(--warn-soft); border-color: rgba(245, 158, 11, 0.28); color: #FDE68A; }
.notice-gold strong { color: var(--gold-text); }

.alert {
    padding: 12px 14px;
    margin: 0 0 14px;
    border-radius: var(--radius);
    border: 1px solid;
    font-size: 0.9rem;
    line-height: 1.6;
}
.alert .btn { margin-top: 10px; }
.alert a { color: inherit; font-weight: 700; }
.alert-error   { background: var(--bad-soft);  border-color: rgba(244, 63, 94, 0.3);  color: #FECDD3; }
.alert-warning { background: var(--warn-soft); border-color: rgba(245, 158, 11, 0.3); color: #FDE68A; }
.alert-success { background: var(--good-soft); border-color: rgba(34, 197, 94, 0.3);  color: #BBF7D0; }
.alert-info    { background: var(--accent-soft); border-color: rgba(91, 127, 255, 0.3); color: var(--accent-text); }

/* ═══════════════════════════════════════════════
   FORMS
═══════════════════════════════════════════════ */
.field { margin: 0 0 16px; }
.field-label {
    display: block;
    margin-bottom: 6px;
    color: var(--text-2);
    font-size: 0.86rem;
    font-weight: 500;
}
.input {
    width: 100%;
    height: 48px;
    padding: 0 14px;
    background: var(--surface-2);
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 1rem;           /* 16px+ keeps iOS from zooming in */
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
    -webkit-appearance: none;
    appearance: none;
}
.input::placeholder { color: var(--text-3); opacity: 1; }
.input:hover { border-color: rgba(148, 163, 184, 0.34); }
.input:focus { outline: none; border-color: var(--accent); box-shadow: var(--ring-focus); background: var(--surface); }
.input-lg { height: 56px; font-size: 1.1rem; }
.input-sm { height: 38px; font-size: 0.9rem; border-radius: var(--radius-sm); }

.field-hint { margin-top: 6px; color: var(--text-3); font-size: 0.8rem; }

.input-wrap { position: relative; }
.input-has-action { padding-right: 48px; }
.input-action {
    position: absolute;
    top: 50%;
    right: 4px;
    transform: translateY(-50%);
    width: 40px; height: 40px;
    display: grid;
    place-items: center;
    border: 0;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-3);
    cursor: pointer;
}
.input-action:hover { color: var(--text); }
.input-action .icon-eye-off { display: none; }
.input-action[aria-pressed="true"] .icon-eye { display: none; }
.input-action[aria-pressed="true"] .icon-eye-off { display: block; }

/* ═══════════════════════════════════════════════
   BUTTONS
═══════════════════════════════════════════════ */
.btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 46px;
    padding: 0 20px;
    border-radius: var(--radius);
    border: 1px solid transparent;
    font-weight: 600;
    font-size: 0.98rem;
    text-decoration: none;
    cursor: pointer;
    user-select: none;
    transition: transform 0.15s var(--ease), box-shadow 0.2s, background 0.2s, border-color 0.2s, filter 0.2s;
}
.btn:active { transform: translateY(1px) scale(0.99); }
.btn-primary {
    background: var(--accent-grad);
    color: #fff;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 10px 24px -10px rgba(91, 127, 255, 0.75);
}
.btn-primary:hover { color: #fff; filter: brightness(1.08); box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 14px 30px -10px rgba(91, 127, 255, 0.85); }
.btn-ghost {
    background: var(--surface-2);
    border-color: var(--line-strong);
    color: var(--text);
}
.btn-ghost:hover { background: var(--surface-3); color: #fff; }
.btn-danger {
    background: var(--bad-soft);
    border-color: rgba(244, 63, 94, 0.35);
    color: var(--bad-text);
}
.btn-danger:hover { background: rgba(244, 63, 94, 0.2); color: #FECDD3; }
.btn-lg { min-height: 54px; font-size: 1.05rem; border-radius: 16px; }
.btn-sm { min-height: 36px; padding: 0 14px; font-size: 0.85rem; border-radius: var(--radius-sm); }
.btn-block { width: 100%; }
.btn-badge {
    padding: 3px 10px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.18);
    font-size: 0.82rem;
    font-weight: 600;
}
.btn.is-loading { color: transparent !important; pointer-events: none; }
.btn.is-loading > * { visibility: hidden; }
.btn.is-loading::after {
    content: "";
    position: absolute;
    width: 20px; height: 20px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: #fff;
    animation: spin 0.7s linear infinite;
}
.btn-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

/* ═══════════════════════════════════════════════
   AUTH PAGES
═══════════════════════════════════════════════ */
.page-auth .container { max-width: 460px; padding-top: 40px; }
.auth-hero { text-align: center; margin-bottom: 24px; }
.auth-mark {
    width: 72px; height: 72px;
    margin: 0 auto 16px;
    border-radius: 20px;
    box-shadow: 0 16px 40px -12px rgba(91, 127, 255, 0.8);
}
.auth-title { font-size: 1.9rem; font-weight: 800; letter-spacing: -0.03em; }
.auth-sub { color: var(--text-2); margin-top: 2px; }
.auth-chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 16px; }
.auth-card { padding: 24px; }
.auth-card .btn { margin-top: 4px; }
.auth-switch { margin-top: 18px; text-align: center; color: var(--text-2); font-size: 0.92rem; }
.auth-hint { margin-top: 8px; text-align: center; color: var(--text-3); font-size: 0.8rem; }

.subject-preview { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 24px; }
.subject-tile {
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    column-gap: 10px;
    align-items: center;
    padding: 12px 14px;
    border-radius: var(--radius);
    background: rgba(13, 20, 34, 0.6);
    border: 1px solid var(--line);
}
.subject-tile-icon { grid-row: span 2; font-size: 1.4rem; }
.subject-tile-name { font-weight: 600; font-size: 0.9rem; text-align: right; }
.subject-tile-count { color: var(--text-3); font-size: 0.75rem; }

/* ═══════════════════════════════════════════════
   MENU — quiz builder
═══════════════════════════════════════════════ */
.resume-card {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px 14px;
    border-color: rgba(91, 127, 255, 0.35);
    background: linear-gradient(135deg, rgba(91, 127, 255, 0.14), rgba(139, 92, 246, 0.06)), var(--surface);
}
.resume-icon { font-size: 1.5rem; }
.resume-text { flex: 1; min-width: 160px; }
.resume-title { font-weight: 700; }
.resume-topic { color: var(--text-2); font-size: 0.82rem; text-align: right; }
.resume-actions { display: flex; gap: 8px; }

.builder { padding: 20px; }
.step + .step { margin-top: 22px; }
.step-head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.step-num {
    width: 24px; height: 24px;
    border-radius: 8px;
    display: grid;
    place-items: center;
    background: var(--accent-soft);
    color: var(--accent-text);
    font: 700 0.78rem/1 var(--font-latin);
}
.step-title { font-size: 1rem; font-weight: 600; color: var(--text); }

/* every picker option is a <label class="pick"> wrapping a hidden radio */
.pick {
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    border: 1px solid var(--line);
    background: var(--surface-2);
    border-radius: var(--radius);
    color: var(--text-2);
    transition: border-color 0.18s, background 0.18s, color 0.18s, transform 0.15s var(--ease);
}
.pick:hover { border-color: var(--line-strong); background: var(--surface-3); color: var(--text); }
.pick:active { transform: scale(0.98); }
.pick:has(input:checked) {
    border-color: var(--accent);
    background: var(--accent-soft);
    color: var(--text);
    box-shadow: inset 0 0 0 1px var(--accent);
}
.pick:has(input:focus-visible) { box-shadow: inset 0 0 0 1px var(--accent), var(--ring-focus); }
.pick-title { font-weight: 600; }
.pick-meta { font-size: 0.78rem; color: var(--text-3); }
.pick:has(input:checked) .pick-meta { color: var(--accent-text); }

.subject-picker { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.pick-subject {
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 14px 8px 12px;
    text-align: center;
}
.pick-subject .pick-icon { font-size: 1.7rem; line-height: 1.2; margin-bottom: 4px; }
.pick-subject .pick-title { font-size: 0.92rem; }

.topic-picker { display: flex; flex-wrap: wrap; gap: 8px; }
.pick-topic { padding: 9px 12px; }
.pick-topic .pick-title { font-size: 0.9rem; }
.pick-topic .pick-meta {
    padding: 1px 7px;
    border-radius: 999px;
    background: rgba(148, 163, 184, 0.1);
    font-variant-numeric: tabular-nums;
}
.pick-topic.is-locked { opacity: 0.6; }
.pick-lock { font-size: 0.8rem; }

.segmented {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: 1fr;
    gap: 4px;
    padding: 4px;
    background: var(--surface-2);
    border: 1px solid var(--line);
    border-radius: var(--radius);
}
.segmented .pick { border-color: transparent; background: transparent; justify-content: center; padding: 10px 8px; }
.segmented .pick:has(input:checked) { background: var(--surface-3); box-shadow: inset 0 0 0 1px var(--line-strong); border-color: transparent; }
.segmented .pick:has(input:checked) .pick-meta { color: var(--text-2); }
.pick-seg .pick-title { font-size: 0.92rem; }

.chip-picker { display: flex; flex-wrap: wrap; gap: 8px; }
.pick-chip { flex-direction: column; gap: 0; padding: 8px 14px; min-width: 76px; }
.pick-chip .pick-title { font-size: 0.9rem; }
.pick-chip .pick-meta { font-variant-numeric: tabular-nums; }

.builder > .btn { margin-top: 24px; }

/* ═══════════════════════════════════════════════
   MENU — progress
═══════════════════════════════════════════════ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-bottom: 14px;
}
.stat-card {
    padding: 16px;
    border-radius: var(--radius-lg);
    background: var(--surface);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-card);
}
.stat-accuracy {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 18px;
}
.stat-accuracy .stat-label { font-size: 1rem; color: var(--text); font-weight: 600; margin: 0; }
.stat-note { color: var(--text-3); font-size: 0.85rem; margin-top: 2px; }
.stat-value {
    font: 800 1.6rem/1.1 var(--font-latin);
    letter-spacing: -0.02em;
    font-variant-numeric: tabular-nums;
}
.stat-good   { color: var(--good-text); }
.stat-bad    { color: var(--bad-text); }
.stat-accent { color: var(--accent-text); }
.stat-gold   { color: var(--gold-text); }
.stat-label { color: var(--text-3); font-size: 0.82rem; margin-top: 4px; }

/* progress ring: --p is 0–100 */
.ring {
    --size: 84px;
    --thick: 9px;
    --color: var(--accent);
    position: relative;
    flex-shrink: 0;
    width: var(--size);
    height: var(--size);
    display: grid;
    place-items: center;
}
.ring::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: conic-gradient(var(--color) calc(var(--p) * 1%), rgba(148, 163, 184, 0.14) 0);
    -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - var(--thick)), #000 calc(100% - var(--thick) + 1px));
    mask: radial-gradient(farthest-side, transparent calc(100% - var(--thick)), #000 calc(100% - var(--thick) + 1px));
}
.ring-value { font: 800 1.25rem/1 var(--font-latin); font-variant-numeric: tabular-nums; }
.ring-lg { --size: 132px; --thick: 12px; margin: 4px auto 14px; }
.ring-lg .ring-value { font-size: 1.9rem; }
.ring-good { --color: var(--good); }
.ring-mid  { --color: #F59E0B; }
.ring-bad  { --color: var(--bad); }

.empty-state { text-align: center; color: var(--text-2); padding: 28px 20px; }
.empty-icon { display: block; font-size: 2rem; margin-bottom: 6px; }

.list-card { padding: 8px 20px; }
.list-title { font-size: 0.95rem; color: var(--text-2); font-weight: 600; padding: 12px 0 4px; }
.subject-row, .recent-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
}
.subject-row + .subject-row, .recent-row + .recent-row { border-top: 1px solid var(--line); }
.subject-row-icon {
    flex-shrink: 0;
    width: 40px; height: 40px;
    display: grid;
    place-items: center;
    border-radius: 12px;
    background: var(--surface-2);
    font-size: 1.25rem;
}
.subject-row-body { flex: 1; min-width: 0; }
.subject-row-top { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 8px; margin-bottom: 6px; }
.subject-row-name { font-weight: 600; }
.subject-row-pct { font-weight: 700; font-variant-numeric: tabular-nums; }
html[dir="rtl"] .subject-row-pct { margin-right: auto; }   /* physical: the span itself is dir=ltr */
html[dir="ltr"] .subject-row-pct { margin-left: auto; }
.subject-row-meta { color: var(--text-3); font-size: 0.78rem; margin-top: 6px; }

.bar { height: 6px; border-radius: 999px; background: rgba(148, 163, 184, 0.14); overflow: hidden; }
.bar-fill {
    height: 100%;
    border-radius: inherit;
    background: var(--accent-grad);
    transition: width 0.45s var(--ease);
}

.recent-body { flex: 1; min-width: 0; }
.recent-topic { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; text-align: right; }
.recent-meta { color: var(--text-3); font-size: 0.78rem; }
.score-pill {
    flex-shrink: 0;
    min-width: 54px;
    padding: 4px 10px;
    text-align: center;
    border-radius: 999px;
    font: 700 0.85rem/1.4 var(--font-latin);
    font-variant-numeric: tabular-nums;
}
.score-good { background: var(--good-soft); color: var(--good-text); }
.score-mid  { background: var(--warn-soft); color: var(--warn-text); }
.score-bad  { background: var(--bad-soft); color: var(--bad-text); }

/* ═══════════════════════════════════════════════
   QUIZ
═══════════════════════════════════════════════ */
.quiz { scroll-margin-top: calc(var(--appbar-h) + 12px); }
.quiz-head {
    margin-bottom: 14px;
    padding: 12px;
    border-radius: var(--radius-lg);
    background: var(--surface);
    border: 1px solid var(--line);
}
.quiz-head-row { display: flex; align-items: center; gap: 12px; }
.quiz-head-title { flex: 1; min-width: 0; }
.quiz-topic { font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; text-align: right; }
.quiz-subject { color: var(--text-3); font-size: 0.78rem; text-align: right; }
.quiz-progress { display: flex; align-items: center; gap: 12px; margin-top: 12px; }
.quiz-progress .bar { flex: 1; height: 8px; }
.quiz-count { color: var(--text-2); font-size: 0.82rem; font-weight: 600; font-variant-numeric: tabular-nums; }

.question-card {
    padding: 22px 20px;
    margin-bottom: 14px;
    border-radius: var(--radius-xl);
    background:
        radial-gradient(400px 160px at 0% 0%, rgba(91, 127, 255, 0.10), transparent 70%),
        var(--surface);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-card);
}
.question-eyebrow {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 10px;
    color: var(--accent-text);
    font-size: 0.82rem;
    font-weight: 600;
}
.streak {
    padding: 2px 10px;
    border-radius: 999px;
    background: var(--warn-soft);
    color: var(--gold-text);
    font-size: 0.78rem;
}
.question-text {
    font-size: 1.18rem;
    font-weight: 500;
    line-height: 1.65;
    text-align: left;
    white-space: pre-line;
    overflow-wrap: anywhere;
}

.answer-form { margin: 0; }
.options { display: flex; flex-direction: column; gap: 10px; direction: ltr; }
.option {
    position: relative;
    display: flex;
    align-items: center;
    gap: 12px;
    min-height: 58px;
    padding: 12px 14px;
    border-radius: 16px;
    background: var(--surface);
    border: 1px solid var(--line-strong);
    cursor: pointer;
    transition: border-color 0.18s, background 0.18s, transform 0.15s var(--ease), opacity 0.2s;
}
.option:hover { border-color: rgba(148, 163, 184, 0.38); background: var(--surface-2); }
.option:active { transform: scale(0.99); }
.opt-badge {
    flex: 0 0 34px;
    height: 34px;
    display: grid;
    place-items: center;
    border-radius: 10px;
    background: var(--surface-3);
    color: var(--text-2);
    font: 700 0.9rem/1 var(--font-latin);
    transition: background 0.18s, color 0.18s;
}
.opt-text { flex: 1; font-size: 1rem; line-height: 1.5; text-align: left; overflow-wrap: anywhere; }
.opt-mark { flex-shrink: 0; }
.option:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); box-shadow: inset 0 0 0 1px var(--accent); }
.option:has(input:checked) .opt-badge { background: var(--accent); color: #fff; }
.option:has(input:focus-visible) { box-shadow: inset 0 0 0 1px var(--accent), var(--ring-focus); }

.options.is-locked .option { cursor: default; transform: none; }
.options.is-locked .option:hover { background: var(--surface); border-color: var(--line-strong); }
.options.is-locked .option.is-correct,
.options.is-locked .option.is-correct:hover { background: var(--good-soft); border-color: rgba(34, 197, 94, 0.55); box-shadow: inset 0 0 0 1px rgba(34, 197, 94, 0.55); }
.options.is-locked .option.is-correct .opt-badge { background: var(--good); color: #fff; }
.options.is-locked .option.is-correct .opt-mark { color: var(--good-text); }
.options.is-locked .option.is-wrong,
.options.is-locked .option.is-wrong:hover { background: var(--bad-soft); border-color: rgba(244, 63, 94, 0.55); box-shadow: inset 0 0 0 1px rgba(244, 63, 94, 0.55); }
.options.is-locked .option.is-wrong .opt-badge { background: var(--bad); color: #fff; }
.options.is-locked .option.is-wrong .opt-mark { color: var(--bad-text); }
.options.is-locked .option.is-dim { opacity: 0.5; }

.written-answer {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border-radius: 16px;
    border: 1px solid;
}
.written-answer.is-correct { background: var(--good-soft); border-color: rgba(34, 197, 94, 0.5); }
.written-answer.is-wrong   { background: var(--bad-soft); border-color: rgba(244, 63, 94, 0.5); }
.written-label { color: var(--text-2); font-size: 0.85rem; }
.written-value { flex: 1; font-weight: 600; font-size: 1.05rem; text-align: left; overflow-wrap: anywhere; }

.feedback {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-top: 14px;
    padding: 14px 16px;
    border-radius: 16px;
    border: 1px solid;
    animation: pop-in 0.28s var(--ease);
    scroll-margin-bottom: 110px;   /* stay clear of the sticky "next" button */
}
.feedback-good { background: var(--good-soft); border-color: rgba(34, 197, 94, 0.35); }
.feedback-bad  { background: var(--bad-soft); border-color: rgba(244, 63, 94, 0.35); }
.feedback-icon {
    flex-shrink: 0;
    width: 32px; height: 32px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    color: #fff;
}
.feedback-good .feedback-icon { background: var(--good); }
.feedback-bad .feedback-icon  { background: var(--bad); }
.feedback-title { font-weight: 700; }
.feedback-good .feedback-title { color: var(--good-text); }
.feedback-bad .feedback-title  { color: var(--bad-text); }
.feedback-detail { color: var(--text-2); font-size: 0.9rem; margin-top: 2px; }
.feedback-detail b { color: var(--text); }

/* main quiz button stays reachable at the bottom of the screen */
.action-bar {
    position: sticky;
    bottom: 0;
    z-index: 10;
    margin-top: 14px;
    padding: 14px 0 calc(14px + env(safe-area-inset-bottom));
    background: linear-gradient(to top, var(--bg) 70%, rgba(7, 11, 20, 0));
}
.card .action-bar { position: static; padding-bottom: 0; background: none; }

.center-card, .result-card { text-align: center; padding: 28px 20px; }
.center-icon { font-size: 2.4rem; margin-bottom: 8px; }
.result-title { font-size: 1.5rem; margin-bottom: 2px; }
.result-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 18px; }
.result-stat {
    padding: 12px 6px;
    border-radius: var(--radius);
    background: var(--surface-2);
    border: 1px solid var(--line);
}
.result-stat-value { font: 800 1.15rem/1.2 var(--font-latin); font-variant-numeric: tabular-nums; }
.result-stat-label { color: var(--text-3); font-size: 0.75rem; margin-top: 2px; }
.result-card .alert { text-align: start; }
.save-status { color: var(--text-3); font-size: 0.85rem; margin-bottom: 14px; }
.review-toggle { margin-top: 2px; }

.review { margin-top: 16px; }
.review-bar { display: flex; justify-content: center; margin-bottom: 14px; }
.segmented-sm { display: inline-grid; padding: 3px; }
.seg-btn {
    padding: 8px 16px;
    border: 0;
    border-radius: 10px;
    background: transparent;
    color: var(--text-2);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
}
.seg-btn.is-active { background: var(--surface-3); color: var(--text); box-shadow: inset 0 0 0 1px var(--line-strong); }
.review-card { padding: 18px; }
.review-card::before {
    content: "";
    position: absolute;
    top: 18px; bottom: 18px;
    right: 0;
    width: 3px;
    border-radius: 3px 0 0 3px;
}
.review-card.is-correct::before { background: var(--good); }
.review-card.is-wrong::before   { background: var(--bad); }
.review-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.review-num { color: var(--text-3); font-size: 0.8rem; font-weight: 600; }
.review-q { font-weight: 500; text-align: left; margin-bottom: 12px; overflow-wrap: anywhere; }
.review-options { display: flex; flex-direction: column; gap: 6px; direction: ltr; }
.review-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: 12px;
    background: var(--surface-2);
    border: 1px solid var(--line);
    color: var(--text-2);
    font-size: 0.9rem;
}
.review-option .opt-badge { flex: 0 0 auto; min-width: 28px; height: 28px; padding: 0 6px; font-size: 0.8rem; }
.review-option.is-correct { background: var(--good-soft); border-color: rgba(34, 197, 94, 0.4); color: #D1FAE5; }
.review-option.is-correct .opt-badge { background: var(--good); color: #fff; }
.review-option.is-wrong { background: var(--bad-soft); border-color: rgba(244, 63, 94, 0.4); color: #FFE4E6; }
.review-option.is-wrong .opt-badge { background: var(--bad); color: #fff; }

/* ═══════════════════════════════════════════════
   DIALOG
═══════════════════════════════════════════════ */
.dialog {
    width: min(92vw, 380px);
    padding: 24px;
    border-radius: var(--radius-xl);
    border: 1px solid var(--line-strong);
    background: var(--surface);
    color: var(--text);
    text-align: center;
    box-shadow: var(--shadow-pop);
}
.dialog[open] { animation: pop-in 0.22s var(--ease); }
.dialog::backdrop { background: rgba(3, 6, 12, 0.65); -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); }
.dialog-icon { font-size: 2rem; margin-bottom: 6px; }
.dialog-title { font-size: 1.2rem; margin-bottom: 6px; }
.dialog-text { color: var(--text-2); margin-bottom: 20px; }

/* ═══════════════════════════════════════════════
   ACCOUNT & ERROR
═══════════════════════════════════════════════ */
.profile-card { display: flex; align-items: center; gap: 16px; }
.profile-name { font-weight: 700; font-size: 1.2rem; text-align: right; }
.profile-status { margin-top: 4px; }

.error-card { text-align: center; padding: 36px 24px; margin-top: 24px; }
.error-icon { font-size: 2.6rem; margin-bottom: 4px; }
.error-code { color: var(--text-3); font: 700 0.85rem/1 var(--font-latin); letter-spacing: 0.1em; margin-bottom: 10px; }
.error-card .card-sub { margin-bottom: 22px; }

/* ═══════════════════════════════════════════════
   ADMIN
═══════════════════════════════════════════════ */
.insight-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.insight { margin: 0; padding: 14px 16px; display: flex; flex-direction: column; gap: 4px; }
.insight-label { color: var(--text-3); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; font-weight: 600; }
.insight-value { font-weight: 700; font-size: 1.05rem; }

.user-card { padding: 16px; margin-bottom: 10px; }
.user-card-head { display: flex; align-items: center; gap: 10px; }
.user-card-name { flex: 1; font-weight: 700; word-break: break-all; }
.presence { width: 8px; height: 8px; border-radius: 50%; background: var(--text-3); }
.presence.is-online { background: var(--good); box-shadow: 0 0 0 3px var(--good-soft); }
.user-card-meta { display: flex; flex-wrap: wrap; gap: 4px 16px; margin: 6px 0 12px; color: var(--text-3); font-size: 0.78rem; }
.user-card-meta b { color: var(--text-2); font-weight: 500; }
.user-card-actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: flex-start; }
.user-card-actions form { margin: 0; }
.popover > summary { list-style: none; }
.popover > summary::-webkit-details-marker { display: none; }
.popover[open] > summary { border-color: var(--accent); }
.popover-body {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 8px;
    padding: 12px;
    min-width: 220px;
    border-radius: var(--radius);
    background: var(--surface-2);
    border: 1px solid var(--line-strong);
    font-size: 0.86rem;
    color: var(--text-2);
}

/* ═══════════════════════════════════════════════
   MOTION
═══════════════════════════════════════════════ */
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pop-in {
    from { opacity: 0; transform: translateY(6px) scale(0.98); }
    to   { opacity: 1; transform: none; }
}
@keyframes rise {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: none; }
}
.anim-in { animation: rise 0.32s var(--ease) both; }
.options.anim-in { animation-delay: 0.05s; }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ═══════════════════════════════════════════════
   LARGER SCREENS
═══════════════════════════════════════════════ */
@media (min-width: 640px) {
    .container { padding: 32px 24px 56px; }
    .page-title { font-size: 1.9rem; }
    .card { padding: 24px; }
    .subject-picker { grid-template-columns: repeat(4, 1fr); }
    .stats-grid { grid-template-columns: repeat(4, 1fr); }
    .insight-grid { grid-template-columns: repeat(4, 1fr); }
    .question-card { padding: 28px; }
    .question-text { font-size: 1.28rem; }
    .action-bar { position: static; background: none; padding-bottom: 0; }
}

@media (max-width: 380px) {
    .user-chip-name { display: none; }
    html[dir="rtl"] .user-chip, .user-chip { padding: 4px; }
    .btn-row { grid-template-columns: 1fr; }
    .result-stats { gap: 6px; }
}