/* ===== Kroje pisma (lokalnie, latin + latin-ext) ===== */
@font-face {
    font-family: "Inter";
    font-style: normal;
    font-display: swap;
    font-weight: 100 900;
    src: url("lib/fonts/inter-latin-ext-wght-normal.woff2") format("woff2-variations");
    unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
    font-family: "Inter";
    font-style: normal;
    font-display: swap;
    font-weight: 100 900;
    src: url("lib/fonts/inter-latin-wght-normal.woff2") format("woff2-variations");
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
    font-family: "JetBrains Mono";
    font-style: normal;
    font-display: swap;
    font-weight: 400;
    src: url("lib/fonts/jetbrains-mono-latin-ext-400-normal.woff2") format("woff2");
    unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
    font-family: "JetBrains Mono";
    font-style: normal;
    font-display: swap;
    font-weight: 400;
    src: url("lib/fonts/jetbrains-mono-latin-400-normal.woff2") format("woff2");
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
    font-family: "JetBrains Mono";
    font-style: normal;
    font-display: swap;
    font-weight: 700;
    src: url("lib/fonts/jetbrains-mono-latin-ext-700-normal.woff2") format("woff2");
    unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
    font-family: "JetBrains Mono";
    font-style: normal;
    font-display: swap;
    font-weight: 700;
    src: url("lib/fonts/jetbrains-mono-latin-700-normal.woff2") format("woff2");
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
    --eu-bg: #0B1020;
    --eu-surface: #131A2E;
    --eu-raised: #1B2340;
    --eu-line: #26304F;
    --eu-primary: #7C5CFF;
    --eu-secondary: #22D3EE;
    --eu-success: #34D399;
    --eu-warning: #FBBF24;
    --eu-error: #F87171;
    --eu-text: #E6E9F2;
    --eu-muted: #9AA3BD;
    --eu-mono: "JetBrains Mono", ui-monospace, monospace;
}

html, body {
    background: var(--eu-bg);
    color: var(--eu-text);
    font-family: "Inter", system-ui, sans-serif;
}

body {
    background:
        radial-gradient(1200px 600px at 10% -10%, rgba(124, 92, 255, 0.12), transparent 60%),
        radial-gradient(900px 500px at 110% 10%, rgba(34, 211, 238, 0.08), transparent 60%),
        var(--eu-bg);
    background-attachment: fixed;
}

a { color: var(--eu-secondary); }

/* ===== Belka górna ===== */
.appbar.mud-appbar {
    background: rgba(14, 20, 38, 0.85) !important;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--eu-line);
}

.appbar .mud-toolbar { min-height: 68px; }

.topbar {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    flex-wrap: nowrap;
    padding: 6px 0;
    overflow-x: auto;
    scrollbar-width: none;
}

.topbar::-webkit-scrollbar { display: none; }

.eureka-logo {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--eu-text);
}

.eureka-logo:hover .eureka-logo-core { fill: #FDE68A; }

.eureka-wordmark {
    display: inline-flex;
    align-items: flex-end;
    font-weight: 800;
    font-size: 1.35rem;
    letter-spacing: -0.02em;
}

.eureka-drop { width: 9px; height: 24px; margin-left: 2px; margin-bottom: 2px; }

.topbar-countdown {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 12px;
    background: var(--eu-surface);
    border: 1px solid var(--eu-line);
}

.topbar-countdown-icon { color: var(--eu-secondary); }

.countdown-unit {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    min-width: 34px;
    line-height: 1.05;
}

.countdown-unit b {
    font-family: var(--eu-mono);
    font-size: 1.15rem;
    color: var(--eu-text);
}

.countdown-unit small {
    font-size: 0.62rem;
    text-transform: uppercase;
    color: var(--eu-muted);
    letter-spacing: 0.06em;
}

.countdown-done { font-weight: 700; color: var(--eu-warning); }

.topbar-progress { min-width: 180px; flex: 0 1 240px; }

.topbar-progress-label {
    display: flex;
    align-items: baseline;
    gap: 6px;
    font-size: 0.78rem;
    color: var(--eu-muted);
    margin-bottom: 4px;
}

.topbar-progress-label b { color: var(--eu-text); font-size: 0.95rem; }

.topbar-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--eu-surface);
    border: 1px solid var(--eu-line);
    font-size: 0.85rem;
    color: var(--eu-muted);
    white-space: nowrap;
}

.topbar-chip b { color: var(--eu-text); }
.topbar-chip.streak-on { border-color: rgba(251, 191, 36, 0.5); }

.topbar-chip.level .level-badge {
    display: inline-grid;
    place-items: center;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--eu-secondary), var(--eu-primary));
    color: #0B1020;
    font-weight: 800;
    font-size: 0.75rem;
}

.topbar-chip.level .level-name { color: var(--eu-text); font-weight: 600; }

.topbar > * { flex-shrink: 0; }
.topbar .topbar-progress { flex-shrink: 1; }

@media (max-width: 1280px) {
    .topbar-chip.level small, .topbar-progress-label small { display: none; }
    .topbar-progress { flex-basis: 170px; min-width: 130px; }
}

@media (max-width: 1080px) {
    .eureka-wordmark, .topbar-chip.level .level-name, .chip-label { display: none; }
    .topbar { gap: 8px; }
    .topbar-chip { padding: 4px 8px; }
}

@media (max-width: 720px) {
    .topbar-countdown { padding: 2px 6px; }
    .countdown-unit { min-width: 26px; }
    .countdown-unit b { font-size: 0.95rem; }
    .topbar-progress { min-width: 90px; flex-basis: 110px; }
    .topbar-progress-label span { display: none; }
}

/* ===== Nawigacja ===== */
.subnav {
    display: flex;
    gap: 6px;
    max-width: 1280px;
    margin: 0 auto;
    padding: 18px 24px 0;
    flex-wrap: wrap;
    justify-content: center;
}

.subnav-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: 10px;
    color: var(--eu-muted);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.92rem;
    transition: background 0.15s, color 0.15s;
}

.subnav-link:hover { background: var(--eu-surface); color: var(--eu-text); }

.subnav-link.active {
    background: rgba(124, 92, 255, 0.16);
    color: var(--eu-text);
    box-shadow: inset 0 0 0 1px rgba(124, 92, 255, 0.45);
}

.page { padding-top: 18px; padding-bottom: 64px; }

.page-head { margin-bottom: 18px; }

/* ===== Karta zadania ===== */
.task-card {
    max-width: 880px;
    margin: 0 auto;
    padding: 28px 32px;
    border-radius: 20px !important;
    background: linear-gradient(180deg, rgba(27, 35, 64, 0.9), rgba(19, 26, 46, 0.95)) !important;
    border: 1px solid var(--eu-line);
    box-shadow: 0 24px 60px -30px rgba(0, 0, 0, 0.8);
    animation: card-in 0.35s ease-out;
}

@keyframes card-in {
    from { opacity: 0; transform: translateY(12px) scale(0.99); }
    to { opacity: 1; transform: none; }
}

@media (max-width: 600px) {
    .task-card { padding: 18px 16px; }
}

.task-skeleton { max-width: 880px; margin: 0 auto; }

.task-header {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 18px;
}

.task-difficulty { display: inline-flex; }
.star-on { color: var(--eu-warning); }
.star-off { color: #3B4566; }

.task-points {
    font-family: var(--eu-mono);
    font-size: 0.8rem;
    color: var(--eu-muted);
    padding: 2px 8px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.04);
}

.task-source { font-size: 0.78rem; color: var(--eu-muted); }

.math-text { font-size: 1.05rem; line-height: 1.65; }
.math-text p { margin: 0 0 0.75em; }
.math-text p:last-child { margin-bottom: 0; }
.math-text ul, .math-text ol { margin: 0 0 0.75em 1.4em; }
.math-text strong { color: #fff; }

.math-text table {
    border-collapse: collapse;
    margin: 0.5em 0 1em;
    font-size: 0.95rem;
}

.math-text th, .math-text td {
    border: 1px solid var(--eu-line);
    padding: 6px 12px;
    text-align: center;
}

.math-text th { background: rgba(124, 92, 255, 0.12); }

.katex { font-size: 1.08em; }
.katex-display { overflow-x: auto; overflow-y: hidden; padding: 4px 0; }

.task-intro {
    padding: 12px 16px;
    margin-bottom: 14px;
    border-left: 3px solid var(--eu-secondary);
    background: rgba(34, 211, 238, 0.06);
    border-radius: 0 10px 10px 0;
}

.task-figure {
    margin: 16px 0;
    text-align: center;
}

.task-figure img {
    max-width: 100%;
    max-height: 420px;
    border-radius: 12px;
    background: #fff;
    padding: 8px;
}

.task-content { margin-top: 6px; }

.answer-area { margin-top: 22px; }

/* ===== Odpowiedzi ===== */
.choices { display: grid; gap: 10px; }

.choice {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 14px;
    width: 100%;
    padding: 12px 16px;
    text-align: left;
    color: var(--eu-text);
    font: inherit;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--eu-line);
    border-radius: 14px;
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s, transform 0.1s;
}

.choice:hover:not(:disabled) {
    border-color: rgba(124, 92, 255, 0.6);
    background: rgba(124, 92, 255, 0.07);
}

.choice:active:not(:disabled) { transform: scale(0.995); }
.choice:disabled { cursor: default; }

.choice-key {
    display: inline-grid;
    place-items: center;
    flex: none;
    width: 34px;
    height: 34px;
    border-radius: 10px;
    font-weight: 800;
    background: var(--eu-raised);
    color: var(--eu-muted);
}

.choice-text { font-size: 1rem; }

.choice.selected { border-color: var(--eu-primary); background: rgba(124, 92, 255, 0.14); }
.choice.selected .choice-key { background: var(--eu-primary); color: #fff; }
.choice.correct { border-color: var(--eu-success); background: rgba(52, 211, 153, 0.12); }
.choice.correct .choice-key { background: var(--eu-success); color: #062016; }
.choice.wrong { border-color: var(--eu-error); background: rgba(248, 113, 113, 0.12); }
.choice.wrong .choice-key { background: var(--eu-error); color: #2A0909; }
.choice.dimmed { opacity: 0.5; }

.tf-list { display: grid; gap: 10px; }

.tf-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border: 1px solid var(--eu-line);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.03);
}

.tf-row.correct { border-color: var(--eu-success); background: rgba(52, 211, 153, 0.08); }
.tf-row.wrong { border-color: var(--eu-error); background: rgba(248, 113, 113, 0.08); }

.tf-num { font-weight: 800; color: var(--eu-muted); }
.tf-text { flex: 1; }
.tf-buttons { display: flex; gap: 6px; flex: none; }

.tf-btn {
    width: 44px;
    height: 38px;
    border-radius: 10px;
    border: 1px solid var(--eu-line);
    background: var(--eu-raised);
    color: var(--eu-muted);
    font: inherit;
    font-weight: 800;
    cursor: pointer;
}

.tf-btn:hover:not(:disabled) { border-color: var(--eu-primary); color: var(--eu-text); }
.tf-btn.on { background: var(--eu-primary); border-color: var(--eu-primary); color: #fff; }
.tf-btn:disabled { cursor: default; }

.numbers { display: grid; gap: 12px; }

.number-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.number-label { min-width: 120px; max-width: 420px; font-weight: 600; }
.number-eq { color: var(--eu-muted); font-family: var(--eu-mono); }
.number-input { max-width: 240px; }
.number-input input { font-family: var(--eu-mono); font-size: 1.05rem; }

/* ===== Akcje i wynik ===== */
.task-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 26px;
    padding-top: 18px;
    border-top: 1px solid var(--eu-line);
}

.result-banner {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 26px;
    padding: 16px 18px;
    border-radius: 16px;
    animation: card-in 0.3s ease-out;
}

.result-banner.ok { background: rgba(52, 211, 153, 0.12); border: 1px solid rgba(52, 211, 153, 0.5); }
.result-banner.bad { background: rgba(251, 191, 36, 0.08); border: 1px solid rgba(251, 191, 36, 0.45); }

.result-emoji { font-size: 2rem; }
.result-banner > div { flex: 1 1 260px; }
.result-title { font-weight: 800; font-size: 1.15rem; }
.result-sub { color: var(--eu-muted); font-size: 0.9rem; }

.solution-panel {
    margin-top: 18px;
    padding: 18px 20px;
    border-radius: 16px;
    background: rgba(11, 16, 32, 0.6);
    border: 1px dashed var(--eu-line);
    animation: card-in 0.3s ease-out;
}

.solution-answer {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 12px;
    font-weight: 700;
    color: var(--eu-success);
}

.solution-answer-value { color: var(--eu-text); }

.solution-notes {
    display: flex;
    gap: 8px;
    margin-top: 14px;
    padding: 10px 12px;
    border-radius: 12px;
    background: rgba(251, 191, 36, 0.07);
    color: #FDE68A;
}

.solution-notes .math-text { font-size: 0.92rem; }

.hint-bulb { font-size: 1.6rem; }
.hint-text { font-size: 1.05rem; }

.done-card, .empty-card {
    max-width: 640px;
    margin: 40px auto;
    padding: 40px;
    text-align: center;
    border-radius: 20px !important;
    background: var(--eu-surface) !important;
    border: 1px solid var(--eu-line);
}

.done-emoji { font-size: 3.2rem; margin-bottom: 8px; }

/* ===== Listy zadań ===== */
.task-list { display: grid; gap: 8px; }

.task-list-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 16px;
    border-radius: 14px;
    background: var(--eu-surface);
    border: 1px solid var(--eu-line);
    text-decoration: none;
    color: var(--eu-text);
    transition: border-color 0.15s, transform 0.1s;
}

.task-list-item:hover { border-color: var(--eu-primary); transform: translateX(2px); }

.task-list-section {
    display: inline-grid;
    place-items: center;
    min-width: 44px;
    height: 36px;
    border-radius: 10px;
    font-weight: 800;
    font-size: 0.85rem;
}

.task-list-main { flex: 1; min-width: 0; }
.task-list-title { font-weight: 600; }
.task-list-sub { font-size: 0.8rem; color: var(--eu-muted); }
.task-list-meta { text-align: right; color: var(--eu-muted); font-size: 0.85rem; }
.task-list-meta small { display: block; }

.section-chips { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }

/* ===== Panel admina ===== */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
    gap: 12px;
}

.kpi-card {
    display: flex;
    gap: 14px;
    align-items: center;
    padding: 16px;
    border-radius: 16px !important;
    background: var(--eu-surface) !important;
    border: 1px solid var(--eu-line);
}

.kpi-icon {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    flex: none;
}

.kpi-label { font-size: 0.78rem; color: var(--eu-muted); text-transform: uppercase; letter-spacing: 0.04em; }
.kpi-value { font-size: 1.45rem; font-weight: 800; line-height: 1.2; }
.kpi-sub { font-size: 0.8rem; color: var(--eu-muted); }

.chart-card {
    height: 100%;
    padding: 12px 14px;
    border-radius: 16px !important;
    background: var(--eu-surface) !important;
    border: 1px solid var(--eu-line);
}

.section-ranking { display: grid; gap: 12px; }

.section-rank-row {
    display: grid;
    grid-template-columns: minmax(150px, 1.3fr) 2fr 80px;
    align-items: center;
    gap: 10px;
    font-size: 0.88rem;
}

.section-rank-value { text-align: right; font-weight: 700; }
.section-rank-value small { display: block; font-weight: 400; color: var(--eu-muted); }

.batch-list { display: grid; gap: 10px; }

.batch-row {
    display: grid;
    grid-template-columns: 24px minmax(180px, 1.2fr) 2fr 90px;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
}

.batch-row.locked { opacity: 0.55; }
.batch-count { text-align: right; font-family: var(--eu-mono); }

.reset-list { margin: 8px 0 12px 1.2em; color: var(--eu-muted); }

.ua {
    display: inline-block;
    max-width: 420px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--eu-muted);
    font-size: 0.8rem;
}

/* ===== Logowanie (celowo bez logo i opisów) ===== */
.login-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.login-form {
    width: min(360px, 100%);
    display: grid;
    gap: 16px;
    padding: 32px 28px;
    border-radius: 18px;
    background: var(--eu-surface);
    border: 1px solid var(--eu-line);
    box-shadow: 0 30px 80px -40px rgba(0, 0, 0, 0.9);
}

.login-form label { display: grid; gap: 6px; font-size: 0.85rem; color: var(--eu-muted); }

.login-form input {
    height: 44px;
    padding: 0 14px;
    border-radius: 10px;
    border: 1px solid var(--eu-line);
    background: var(--eu-bg);
    color: var(--eu-text);
    font: inherit;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.login-form input:focus { border-color: var(--eu-primary); box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.25); }

.login-form button {
    height: 46px;
    margin-top: 6px;
    border: 0;
    border-radius: 10px;
    background: var(--eu-primary);
    color: #fff;
    font: inherit;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: filter 0.15s;
}

.login-form button:hover { filter: brightness(1.12); }

.login-error { margin: 0; color: var(--eu-error); font-size: 0.85rem; }

/* ===== Błąd połączenia Blazora ===== */
#blazor-error-ui {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 2000;
    padding: 12px 20px;
    background: #7F1D1D;
    color: #fff;
}

#blazor-error-ui .reload { color: #FDE68A; margin-left: 8px; }