/* === Reset & Base === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg: #F4F1EB;
    --card: #FFFFFF;
    --accent: #E35B2C;
    --accent-light: #FFF0EB;
    --accent-hover: #c84f26;
    --text: #2A2520;
    --text-muted: #7A756E;
    --border: #E5E0D8;
    --shadow: 0 2px 16px rgba(42,37,32,0.07);
    --green: #2D6A4F;
    --green-bg: #E8F5EE;
    --red: #D06A4A;
    --red-bg: #FFF1ED;
    --highlight: #F7C948;
    --highlight-bg: #FFFBE6;
    --blue: #1D4E89;
    --blue-bg: #E3EDF8;
    --radius-card: 16px;
    --radius-input: 12px;
    --radius-pill: 999px;
}

body {
    font-family: 'DM Sans', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.65;
    font-size: 0.93rem;
}

.container {
    max-width: 920px;
    margin: 0 auto;
    padding: 1.2rem 1.5rem 4rem;
}

/* === Animations === */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.3s ease;
}

@keyframes pop {
    0% { transform: scale(1); }
    50% { transform: scale(1.12); }
    100% { transform: scale(1); }
}

.pop {
    animation: pop 0.3s ease;
}

/* === Header === */
header {
    text-align: center;
    padding: 2.5rem 2rem 1.5rem;
    animation: fadeIn 0.3s ease;
}

.title-main {
    display: inline-flex;
    align-items: center;
    gap: 0.48rem;
}

.title-lines {
    display: inline-flex;
    align-items: baseline;
    gap: 0.35rem;
}

.title-word {
    display: inline-block;
}

.header-inline-icon {
    width: 46px;
    height: 46px;
    object-fit: contain;
    display: inline-block;
    transform: translateY(4px);
}

h1 .accent-word {
    color: var(--accent);
}

h1 {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.02em;
    line-height: 1.15;
}

h1 .accent {
    color: var(--accent);
}

h1 .subtitle {
    display: block;
    font-family: 'DM Sans', system-ui, sans-serif;
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 400;
    margin-top: 0.4rem;
    letter-spacing: 0;
    font-style: italic;
}

.intro {
    margin-top: 0.75rem;
    font-size: 0.95rem;
    color: var(--text);
    line-height: 1.6;
}

.en {
    color: var(--text-muted);
    font-style: italic;
    font-size: 0.88em;
}

.level-badges {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin: 0.3rem 0 0.95rem;
}

@media (min-width: 701px) {
    header {
        padding-bottom: 0.5rem;
    }

    .level-badges {
        margin-top: 2.8rem;
    }
}

.level-badge {
    display: inline-block;
    background: var(--accent);
    color: white;
    font-weight: 700;
    font-size: 0.85rem;
    padding: 0.3rem 0.9rem;
    border-radius: 100px;
}

.level-badge-switch {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    background: var(--card);
    color: var(--text-muted);
    border: 1.5px solid var(--border);
    transition: border-color 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.level-badge-switch:visited {
    color: var(--text-muted);
}

.level-badge-switch:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(42,37,32,0.08);
}

.level-badge.blocked {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background: var(--card);
    color: var(--text-muted);
    border: 1.5px dashed var(--border);
    padding: 0.26rem 0.8rem;
    cursor: pointer;
    position: relative;
}

.level-badge.blocked img {
    width: 14px;
    height: 14px;
    opacity: 0.8;
}

.level-badge.blocked .blocked-hint {
    display: none;
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--text);
    color: #fff;
    border-radius: 8px;
    padding: 0.4rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
    box-shadow: var(--shadow);
    z-index: 12;
}

.level-badge.blocked .blocked-hint::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--text);
}

.level-badge.blocked:hover .blocked-hint,
.level-badge.blocked:focus .blocked-hint,
.level-badge.blocked:focus-visible .blocked-hint {
    display: block;
}

.level-badge-link {
    display: inline-flex;
    align-items: center;
    gap: 0.38rem;
    text-decoration: none;
    margin-left: 0;
    background: var(--blue);
    border: 1.5px solid var(--blue);
    box-shadow: 0 4px 10px rgba(29,78,137,0.22);
    transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
}

.level-badge-link-main {
    margin-left: auto;
}

.level-badge-link-practice {
    background: var(--card);
    border-color: var(--border);
    color: var(--text-muted);
    box-shadow: none;
}

.level-badge-link-practice.level-badge-link-current {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
    box-shadow: none;
}

.level-badge-link-practice.level-badge-link-current .level-badge-link-icon {
    filter: brightness(0) invert(1);
}

.level-badge-link-icon {
    width: 14px;
    height: 14px;
    object-fit: contain;
    display: block;
}

.level-badge-link:visited {
    color: white;
}

.level-badge-link-practice:visited {
    color: var(--text-muted);
}

.level-badge-link-practice.level-badge-link-current:visited {
    color: #fff;
}

.level-badge-link:hover {
    opacity: 1;
    background: #163f71;
    transform: translateY(-1px);
    box-shadow: 0 6px 12px rgba(29,78,137,0.27);
}

.level-badge-link-practice:hover {
    background: var(--accent-light);
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 4px 10px rgba(42,37,32,0.08);
}

.level-badge-link-practice.level-badge-link-current:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: #fff;
    box-shadow: none;
}

/* === Ad Zone === */
.ad-zone {
    width: 100%;
    margin: 0 auto;
    padding: 0.4rem 0.65rem 0.65rem;
    border: 1.5px dashed #D8CDC0;
    border-radius: 14px;
    background: #F8F4ED;
}

.ad-zone-practice {
    margin-top: 0.2rem;
    margin-bottom: 1rem;
}

.ad-zone-label {
    display: inline-block;
    margin: 0 0 0.35rem;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #9B8F83;
}

.ad-zone-body {
    min-height: 96px;
    border-radius: 12px;
    background: #fff;
    border: 1px solid #EEE6DC;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.ad-zone .adsbygoogle.ad-slot {
    max-width: 100%;
}

.ad-slot-practiceInline {
    width: 728px;
    height: 90px;
}

.ad-zone-placeholder {
    color: var(--text-muted);
    font-size: 0.82rem;
    text-align: center;
    padding: 0.4rem 0.7rem;
}

.ad-zone-placeholder code {
    font-family: 'DM Sans', system-ui, sans-serif;
    font-size: 0.78rem;
    color: #6A645D;
}

/* === Score Bar === */
.score-bar {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    background: var(--card);
    border-radius: var(--radius-card);
    padding: 0.85rem 1.5rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    animation: fadeIn 0.3s ease;
}

.score-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 1.1rem;
    font-weight: 700;
}

.score-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.correct-score .score-icon { color: var(--green); }
.wrong-score .score-icon { color: var(--red); }
.streak-score .score-icon { color: var(--highlight); }

/* === Help Section === */
.help-section {
    margin-bottom: 1.5rem;
    animation: fadeIn 0.3s ease;
}

.help-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 0.6rem;
}

.help-header-actions {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
}

.help-header h2 {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text);
}

.help-visibility-btn {
    width: 38px;
    height: 38px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--card);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.help-visibility-btn:hover {
    border-color: var(--accent);
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(227, 91, 44, 0.12);
}

.help-visibility-btn img {
    width: 19px;
    height: 19px;
    opacity: 0.9;
}

.help-content {
    display: block;
    background: var(--card);
    border-radius: var(--radius-card);
    padding: 1.8rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: filter 0.2s ease;
}

.help-content.blurred {
    filter: blur(6px);
    pointer-events: none;
    user-select: none;
}

.help-content h3 {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text);
}

/* === Pattern Overview === */
.pattern-overview {
    margin-bottom: 1.5rem;
}

.numbers-help-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.6rem;
}

.numbers-help-card {
    border-radius: var(--radius-input);
    padding: 0.75rem 0.7rem;
    border: 1.5px solid var(--border);
    background: #f9f7f3;
}

.numbers-help-title {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 0.3rem;
}

.numbers-help-line {
    font-size: 0.88rem;
    line-height: 1.35;
}

.numbers-rules {
    display: grid;
    gap: 0.55rem;
    margin-bottom: 0.9rem;
}

.numbers-rule {
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0.65rem 0.8rem;
    background: #fbfaf7;
}

.numbers-rule-title {
    font-size: 0.86rem;
    font-weight: 700;
    margin-bottom: 0.2rem;
    line-height: 1.35;
}

.numbers-rule-example {
    font-size: 0.84rem;
    color: var(--text-muted);
    line-height: 1.35;
}

.pattern-intro {
    font-size: 0.93rem;
    margin-bottom: 0.75rem;
    line-height: 1.6;
}

.clock-zones {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0.5rem;
}

.zone {
    border-radius: var(--radius-input);
    padding: 0.7rem 0.6rem;
    text-align: center;
    border: 1.5px solid var(--border);
}

.zone-minutes {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    margin-bottom: 0.35rem;
}

.zone-pattern {
    font-size: 0.82rem;
    margin-bottom: 0.3rem;
    line-height: 1.35;
}

.zone-example {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.zone-english {
    font-size: 0.72rem;
    color: var(--text-muted);
    font-style: italic;
    line-height: 1.3;
}

/* Zone colors */
.zone-over {
    background: var(--blue-bg);
    border-color: rgba(29, 78, 137, 0.2);
}
.zone-over .zone-example { color: var(--blue); }

.zone-voor-half {
    background: #F3EEFF;
    border-color: rgba(139, 92, 246, 0.2);
}
.zone-voor-half .zone-example { color: #7C3AED; }

.zone-half {
    background: var(--accent-light);
    border-color: rgba(227, 91, 44, 0.2);
}
.zone-half .zone-example { color: var(--accent); }

.zone-over-half {
    background: #F3EEFF;
    border-color: rgba(139, 92, 246, 0.2);
}
.zone-over-half .zone-example { color: #7C3AED; }

.zone-voor {
    background: var(--green-bg);
    border-color: rgba(45, 106, 79, 0.2);
}
.zone-voor .zone-example { color: var(--green); }

.table-heading {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-muted);
}

@media (max-width: 700px) {
    .numbers-help-grid {
        grid-template-columns: 1fr;
    }

    .clock-zones {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .zone-half {
        grid-column: 1 / -1;
    }
}

/* === Help Table === */
.help-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.help-table thead th {
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.73rem;
    color: var(--text-muted);
    font-weight: 700;
    padding: 0.6rem 0.75rem;
    text-align: left;
    border-bottom: 2px solid var(--border);
}

.help-table td {
    padding: 0.55rem 0.75rem;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

.help-table tr:last-child td {
    border-bottom: none;
}

.help-table tr:hover {
    background: rgba(227, 91, 44, 0.02);
}

.help-table .dutch-text {
    font-weight: 600;
    color: var(--text);
    overflow-wrap: anywhere;
    word-break: break-word;
}

.help-table .english-text {
    color: var(--text-muted);
    font-style: italic;
    overflow-wrap: anywhere;
    word-break: break-word;
}

/* === Help Note (Tip Box) === */
.help-note {
    font-size: 0.86rem;
    background: var(--highlight-bg);
    padding: 0.75rem 1rem;
    border-radius: 0 8px 8px 0;
    border-left: 3px solid var(--highlight);
    color: var(--text);
    line-height: 1.6;
}

/* === Play Buttons === */
.play-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    vertical-align: middle;
    opacity: 0.5;
    transition: opacity 0.2s;
    display: inline-flex;
    align-items: center;
}

.play-btn:hover {
    opacity: 1;
}

.play-btn.playing {
    opacity: 1;
}

.play-btn img {
    width: 14px;
    height: 14px;
}

.feedback-play img {
    width: 16px;
    height: 16px;
}

/* === Listen Button (next to clock) === */
.listen-btn {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    background: var(--accent-light);
    color: var(--accent);
    border: 1.5px solid rgba(227, 91, 44, 0.2);
    border-radius: var(--radius-pill);
    padding: 0.4rem 0.9rem;
    font-family: 'DM Sans', system-ui, sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
    margin-top: 0.75rem;
}

.listen-btn:hover {
    background: var(--accent);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(227, 91, 44, 0.2);
}

.listen-btn:hover img {
    filter: brightness(0) invert(1);
}

.listen-btn.playing {
    background: var(--accent);
    color: white;
}

.listen-btn.playing img {
    filter: brightness(0) invert(1);
}

.listen-btn img {
    width: 14px;
    height: 14px;
    opacity: 0.8;
}

.listen-btn:disabled {
    opacity: 0.35;
    cursor: default;
    pointer-events: none;
}

/* === Mode Tabs === */
.topic-tabs {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.5rem;
    margin-bottom: 1rem;
}

@media (min-width: 701px) {
    .topic-tabs {
        margin-top: 2.2rem;
    }
}

.topic-tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.15rem;
    padding: 0.6rem 0.4rem;
    background: white;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-input);
    font-family: 'DM Sans', system-ui, sans-serif;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text);
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s, transform 0.2s;
}

.topic-tab:hover {
    border-color: var(--accent);
    transform: translateY(-1px);
}

.topic-tab.active {
    background: var(--accent-light);
    border-color: var(--accent);
    color: var(--accent);
}

.topic-tab.active .mode-desc {
    color: var(--accent);
    opacity: 0.7;
}

.mode-tabs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    margin-bottom: 1.2rem;
}

.mode-tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.15rem;
    padding: 0.6rem 0.4rem;
    background: white;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-input);
    font-family: 'DM Sans', system-ui, sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text);
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s, transform 0.2s;
}

.mode-tab:hover {
    border-color: var(--accent);
    transform: translateY(-1px);
}

.mode-tab.active {
    background: var(--accent-light);
    border-color: var(--accent);
    color: var(--accent);
}

.mode-icon {
    font-size: 1.2rem;
}

.mode-icon-img {
    width: 20px;
    height: 20px;
    display: block;
    object-fit: contain;
}

.date-task-tab[data-date-task="birthday"] .mode-icon-img {
    width: 23px;
    height: 23px;
    filter: saturate(1.35) contrast(1.12);
}

.mode-desc {
    font-size: 0.68rem;
    font-weight: 500;
    color: var(--text-muted);
}

.mode-tab.active .mode-desc {
    color: var(--accent);
    opacity: 0.7;
}

/* === Listen Mode === */
.listen-prompt {
    text-align: center;
    margin-bottom: 1.2rem;
}

.listen-big-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: var(--radius-pill);
    padding: 0.8rem 2rem;
    font-family: 'DM Sans', system-ui, sans-serif;
    font-size: 1.05rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
    margin-bottom: 0.5rem;
}

.listen-big-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(227, 91, 44, 0.2);
}

.listen-big-btn img {
    width: 18px;
    height: 18px;
    filter: brightness(0) invert(1);
}

.listen-hint {
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.4;
}

/* === Set-Clock Mode === */
.set-prompt {
    text-align: center;
    margin-bottom: 1rem;
}

.set-prompt-text {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.3rem;
}

.set-hint {
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.4;
}

/* === Set-Clock Dual Layout === */
.set-dual-clocks {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.set-dual-left,
.set-dual-right {
    display: flex;
    align-items: center;
    justify-content: center;
}

.set-dual-left .digital-watch {
    margin-top: 0;
}

.set-dual-arrow {
    font-size: 1.5rem;
    color: var(--text-muted);
    flex-shrink: 0;
}

.set-dual-right svg {
    display: block;
}

.clock-draggable .clock-face {
    stroke: var(--blue);
}

@media (max-width: 700px) {
    .set-dual-clocks {
        flex-direction: column;
        gap: 0.5rem;
    }
    .set-dual-arrow {
        transform: rotate(90deg);
        font-size: 1.2rem;
    }
    .set-dual-right svg {
        width: 160px;
        height: 160px;
    }
}

.check-btn {
    margin: 0 auto 1rem;
    padding: 0.6rem 1.8rem;
    background: var(--blue);
    color: white;
    border: none;
    border-radius: var(--radius-pill);
    font-family: 'DM Sans', system-ui, sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
}

.check-btn:hover {
    background: #16396a;
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(29, 78, 137, 0.22);
}

/* Draggable clock hands */
.hand-draggable {
    cursor: grab;
}

.hand-draggable:active {
    cursor: grabbing;
}

.clock-draggable .clock-face {
    stroke: var(--blue);
}

/* === Display Toggles === */
.display-toggles {
    display: flex;
    justify-content: center;
    gap: 1.2rem;
    margin-bottom: 1.2rem;
}

.toggle-label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    user-select: none;
}

.toggle-label input[type="checkbox"] {
    display: none;
}

.toggle-check {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border);
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, border-color 0.2s;
    flex-shrink: 0;
}

.toggle-check::after {
    content: '';
    display: block;
    width: 10px;
    height: 10px;
    border-radius: 2px;
    background: transparent;
    transition: background 0.2s;
}

.toggle-label input[type="checkbox"]:checked + .toggle-check {
    border-color: var(--accent);
}

.toggle-label input[type="checkbox"]:checked + .toggle-check::after {
    background: var(--accent);
}

/* === Digital Clock (watch style) === */

.digital-watch {
    display: none;
    margin-top: 0.75rem;
}

.digital-watch.visible {
    display: block;
}

.digital-watch-body {
    display: inline-block;
    background: #1a1a1a;
    border-radius: 14px;
    padding: 6px;
    box-shadow:
        0 2px 8px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    border: 2px solid #2a2a2a;
    position: relative;
}

.digital-watch-body::before,
.digital-watch-body::after {
    content: '';
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 18px;
    background: #333;
    border-radius: 2px;
}

.digital-watch-body::before {
    left: -8px;
    box-shadow: 0 -10px 0 #333;
}

.digital-watch-body::after {
    right: -8px;
}

.digital-watch-screen {
    background: #2a3a2a;
    border-radius: 10px;
    padding: 0.6rem 1.4rem 0.5rem;
    position: relative;
    overflow: hidden;
    box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.4);
}

.digital-watch-screen::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 40%;
    background: linear-gradient(180deg, rgba(255,255,255,0.04) 0%, transparent 100%);
    border-radius: 10px 10px 0 0;
    pointer-events: none;
}

.digital-watch-label {
    font-family: 'DM Sans', system-ui, sans-serif;
    font-size: 0.5rem;
    color: #4a7a4a;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    text-align: center;
    margin-bottom: 0.15rem;
}

.digital-time-display {
    position: relative;
    display: grid;
    place-items: center;
}

.digital-time-ghost,
.digital-time-value {
    font-family: 'DM Sans', system-ui, -apple-system, sans-serif;
    font-size: 3.2rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    line-height: 1;
    grid-area: 1 / 1;
    text-align: center;
}

.digital-time-ghost {
    color: rgba(74, 122, 74, 0.15);
    user-select: none;
}

.digital-time-value {
    color: #5CDB5C;
    text-shadow: 0 0 8px rgba(92, 219, 92, 0.4), 0 0 20px rgba(92, 219, 92, 0.15);
}

@media (max-width: 700px) {
    .digital-time-ghost,
    .digital-time-value {
        font-size: 2.6rem;
    }
    .digital-watch-screen {
        padding: 0.5rem 1rem 0.4rem;
    }
}

/* === Game Card === */
.game-area {
    background: var(--card);
    border-radius: var(--radius-card);
    padding: 1.8rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    text-align: center;
    animation: fadeIn 0.3s ease;
}

/* === Clock === */
.clock-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 1.5rem;
}

.clock-face {
    fill: white;
    stroke: var(--text);
    stroke-width: 3;
}

.clock-inner {
    fill: #FAFAF7;
    stroke: none;
}

.clock-center {
    fill: var(--accent);
}

.hand {
    stroke-linecap: round;
}

.hand-hour {
    stroke: var(--text);
    stroke-width: 5;
}

.hand-minute {
    stroke: var(--accent);
    stroke-width: 3.5;
}

.clock-number {
    font-size: 14px;
    font-weight: 700;
    fill: var(--text);
    text-anchor: middle;
    dominant-baseline: central;
    font-family: 'DM Sans', system-ui, sans-serif;
}

.time-read-puzzle {
    margin-bottom: 0.4rem;
}

/* === Numbers Mode === */
.numbers-section {
    animation: fadeIn 0.25s ease;
}

.numbers-hint {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.4;
    margin-bottom: 0.9rem;
}

.numbers-difficulty {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.45rem 0.95rem;
    margin-bottom: 0.9rem;
}

.numbers-difficulty-title {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-muted);
}

.numbers-difficulty .toggle-label {
    font-size: 0.8rem;
    gap: 0.35rem;
}

.numbers-value {
    display: inline-block;
    min-width: 170px;
    padding: 0.5rem 1.3rem;
    margin-bottom: 1rem;
    border-radius: 14px;
    border: 2px solid var(--text);
    background: #f8f6f2;
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    line-height: 1.1;
}

.numbers-drop-zone {
    min-height: 64px;
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    align-items: center;
    justify-content: flex-start;
    padding: 0.6rem;
    margin-bottom: 0.75rem;
    border: 2px dashed rgba(29, 78, 137, 0.25);
    border-radius: var(--radius-input);
    background: #f8fbff;
}

.numbers-drop-placeholder {
    color: var(--text-muted);
    font-size: 0.84rem;
    font-style: italic;
}

.numbers-token-bank {
    min-height: 64px;
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    align-items: center;
    justify-content: flex-start;
    padding: 0.6rem;
    margin-bottom: 0.8rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-input);
    background: white;
}

.number-token {
    border: 1.5px solid var(--border);
    border-radius: 999px;
    background: white;
    color: var(--text);
    font-family: 'DM Sans', system-ui, sans-serif;
    font-size: 0.9rem;
    font-weight: 700;
    line-height: 1.1;
    padding: 0.45rem 0.85rem;
    cursor: grab;
    transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.number-token:hover:not(:disabled) {
    border-color: var(--accent);
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(227, 91, 44, 0.12);
}

.number-token:active:not(:disabled) {
    cursor: grabbing;
}

.number-token-answer {
    background: var(--blue-bg);
    border-color: rgba(29, 78, 137, 0.3);
}

.number-token:disabled {
    cursor: default;
    opacity: 0.85;
}

.numbers-actions {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.55rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.numbers-actions .check-btn {
    margin: 0;
}

.numbers-reset-btn {
    padding: 0.58rem 1.1rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-pill);
    background: white;
    color: var(--text);
    font-family: 'DM Sans', system-ui, sans-serif;
    font-size: 0.88rem;
    font-weight: 700;
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.numbers-reset-btn:hover:not(:disabled) {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(227, 91, 44, 0.12);
}

.numbers-reset-btn:disabled {
    opacity: 0.55;
    cursor: default;
}

.numbers-play-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.58rem 1rem;
    border: 1.5px solid rgba(227, 91, 44, 0.2);
    border-radius: var(--radius-pill);
    background: var(--accent-light);
    color: var(--accent);
    font-family: 'DM Sans', system-ui, sans-serif;
    font-size: 0.88rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.numbers-play-btn img {
    width: 14px;
    height: 14px;
    opacity: 0.85;
}

.numbers-play-btn:hover:not(:disabled) {
    background: var(--accent);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(227, 91, 44, 0.2);
}

.numbers-play-btn:hover:not(:disabled) img {
    filter: brightness(0) invert(1);
}

.numbers-play-btn:disabled {
    opacity: 0.55;
    cursor: default;
}

/* === Days/Months Calendar Mode === */
.dates-section {
    animation: fadeIn 0.25s ease;
}

.dates-task-tabs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    max-width: 640px;
    margin: 0 auto 0.95rem;
}

.calendar-card {
    border: 1.5px solid var(--border);
    border-radius: var(--radius-input);
    background: #fcfbf8;
    padding: 0.85rem;
    margin: 0 auto 0.9rem;
    max-width: 430px;
}

.calendar-header {
    text-align: center;
    margin-bottom: 0.55rem;
}

.calendar-month-year {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 1.2rem;
    font-weight: 700;
    text-transform: capitalize;
}

.calendar-weekdays,
.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 0.25rem;
}

.calendar-weekday {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    padding: 0.22rem 0.1rem;
    border-radius: 6px;
    text-transform: none;
    line-height: 1.1;
    text-align: center;
}

.calendar-weekday .en {
    display: block;
    font-size: 0.58rem;
    line-height: 1.1;
    font-style: normal;
    color: inherit;
    opacity: 0.82;
}

.calendar-weekday.weekend-col {
    color: #B42318;
    background: #FFF0EE;
}

.calendar-day {
    min-height: 38px;
    border: 1px solid var(--border);
    border-radius: 8px;
    display: grid;
    place-items: center;
    font-size: 0.88rem;
    background: white;
    color: var(--text);
    position: relative;
    overflow: hidden;
}

.calendar-day-number {
    position: relative;
    z-index: 2;
}

.calendar-day.empty {
    border-color: transparent;
    background: transparent;
}

.calendar-day.weekend-col {
    background: #FFF8F7;
    border-color: #F2D6D2;
    color: #7F1D1D;
}

.calendar-day.birthday-target::before {
    content: '';
    position: absolute;
    inset: 2px;
    background: url('icons/birthday.png') center / contain no-repeat;
    opacity: 0.88;
    filter: saturate(1.45) contrast(1.15);
    z-index: 1;
    pointer-events: none;
}

.calendar-day.target {
    border-color: var(--accent);
    background: var(--accent-light);
    color: var(--accent);
    font-weight: 700;
    box-shadow: 0 3px 10px rgba(227, 91, 44, 0.14);
}

.dates-question {
    font-size: 0.9rem;
    color: var(--text);
    margin-bottom: 0.8rem;
    line-height: 1.45;
}

.calendar-legend {
    margin-top: 0.55rem;
    display: flex;
    justify-content: center;
    gap: 0.8rem;
    flex-wrap: wrap;
}

.calendar-legend-item {
    font-size: 0.73rem;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.calendar-legend-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
    border: 1px solid var(--border);
    background: white;
}

.calendar-legend-today {
    background: var(--accent-light);
    border-color: rgba(227, 91, 44, 0.4);
}

.calendar-legend-birthday {
    width: 15px;
    height: 15px;
    border: 0;
    border-radius: 0;
    background: url('icons/birthday.png') center / contain no-repeat;
}

/* === Options Grid === */
.options {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.option-btn {
    padding: 0.85rem 0.75rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-input);
    background: white;
    font-family: 'DM Sans', system-ui, sans-serif;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s, background 0.2s, transform 0.2s, box-shadow 0.2s;
    color: var(--text);
}

.option-btn:hover:not(:disabled) {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(227, 91, 44, 0.12);
}

.option-btn:active:not(:disabled) {
    transform: translateY(0);
}

.option-btn.correct {
    border-color: var(--green);
    background: var(--green-bg);
    color: var(--green);
}

.option-btn.wrong {
    border-color: var(--red);
    background: var(--red-bg);
    color: var(--red);
}

.option-btn:disabled {
    cursor: default;
}

.option-btn:disabled:not(.correct):not(.wrong) {
    opacity: 0.5;
}

/* === Feedback === */
.feedback {
    min-height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 1rem;
    padding: 0.6rem 1rem;
    border-radius: var(--radius-input);
    transition: all 0.3s;
}

.feedback.correct-feedback {
    color: var(--green);
    background: var(--green-bg);
}

.feedback.wrong-feedback {
    color: var(--red);
    background: var(--red-bg);
}

/* === Next Button === */
.next-btn {
    display: none;
    margin: 0 auto;
    padding: 0.6rem 1.8rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: var(--radius-pill);
    font-family: 'DM Sans', system-ui, sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
}

.next-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(227, 91, 44, 0.2);
}

.next-btn:focus {
    outline: 2px solid rgba(227, 91, 44, 0.35);
    outline-offset: 2px;
}

.next-btn.visible {
    display: inline-block;
}

.card {
    background: var(--card);
    border-radius: var(--radius-card);
    padding: 1.8rem;
    margin-top: 1.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.lesson-num {
    display: inline-block;
    background: var(--accent-light);
    color: var(--accent);
    font-weight: 700;
    font-size: 0.72rem;
    padding: 0.15rem 0.55rem;
    border-radius: 6px;
    margin-bottom: 0.5rem;
    letter-spacing: 0.04em;
}

.lesson-support-card {
    background: linear-gradient(180deg, #fff9f5 0%, #ffffff 100%);
    border-color: #ecd8cd;
}

.lesson-support-content {
    display: block;
}

.lesson-support-content::after {
    content: '';
    display: table;
    clear: both;
}

.lesson-support-copy {
    float: left;
    width: calc(100% - 360px);
    min-width: 320px;
}

.lesson-support-title {
    margin: 0.05rem 0 0.35rem;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text);
}

.lesson-support-text {
    margin-bottom: 0;
    max-width: 580px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.lesson-support-actions {
    float: right;
    width: 340px;
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    align-items: center;
    justify-content: flex-end;
    margin-top: 0.6rem;
}

.lesson-support-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    text-decoration: none;
    border-radius: var(--radius-pill);
    padding: 0.52rem 0.95rem;
    background: var(--accent);
    color: #fff;
    font-size: 0.86rem;
    font-weight: 700;
    border: 1.5px solid var(--accent);
}

.lesson-support-btn:hover {
    background: var(--accent-hover);
}

.lesson-support-icon {
    width: 18px;
    height: 18px;
    object-fit: contain;
    display: block;
}

.lesson-support-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.42rem;
    text-decoration: none;
    border-radius: var(--radius-pill);
    padding: 0.48rem 0.85rem;
    background: #fff;
    color: var(--text);
    border: 1.5px solid var(--border);
    font-size: 0.84rem;
    font-weight: 700;
}

.lesson-support-secondary-icon {
    width: 16px;
    height: 16px;
}

.lesson-support-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.site-footer {
    border-top: 1px solid var(--border);
    padding: 0.9rem 1rem 1.2rem;
    background: rgba(255, 255, 255, 0.55);
}

.site-footer-inner {
    width: 100%;
    max-width: calc(920px - 3rem);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.8rem;
    flex-wrap: wrap;
}

.site-footer-text {
    color: var(--text-muted);
    font-size: 0.83rem;
    font-weight: 700;
}

.site-footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
}

.site-footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.83rem;
    font-weight: 700;
}

.site-footer-links a:hover {
    color: var(--accent);
}

/* === Responsive === */
@media (max-width: 700px) {
    h1 {
        font-size: 2rem;
    }

    header {
        padding: 1.5rem 1rem 1rem;
    }

    .container {
        padding: 0.8rem 1rem 3rem;
    }

    .header-inline-icon {
        width: 34px;
        height: 34px;
        transform: translateY(3px);
    }

    .title-main {
        flex-direction: column;
        gap: 0.18rem;
    }

    .title-lines {
        flex-direction: column;
        gap: 0;
        line-height: 1.02;
        align-items: center;
        text-align: center;
    }

    .game-area {
        padding: 1.2rem 1rem;
    }

    .options {
        gap: 0.5rem;
    }

    .option-btn {
        padding: 0.75rem 0.5rem;
        font-size: 0.9rem;
    }

    .score-bar {
        gap: 1rem;
        padding: 0.7rem 1rem;
    }

    .help-content {
        padding: 1.2rem;
    }

    .help-header h2 {
        font-size: 1.05rem;
    }

    .help-visibility-btn {
        width: 34px;
        height: 34px;
    }

    .help-table {
        font-size: 0.83rem;
        table-layout: fixed;
    }

    .help-table td,
    .help-table th {
        padding: 0.45rem 0.5rem;
    }

    .help-table thead th {
        font-size: 0.64rem;
        letter-spacing: 0.04em;
    }

    .help-table th:first-child,
    .help-table td:first-child {
        width: 3.7rem;
        white-space: nowrap;
    }

    .help-table.help-table-two-col {
        table-layout: auto;
    }

    .help-table.help-table-two-col th:first-child,
    .help-table.help-table-two-col td:first-child {
        width: auto;
        white-space: normal;
    }

    .mode-tabs {
        gap: 0.35rem;
    }

    .topic-tabs {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.35rem;
    }

    .level-badges {
        gap: 0.4rem;
        justify-content: center;
    }

    .level-badge {
        font-size: 0.8rem;
        padding: 0.28rem 0.75rem;
    }

    .level-badge-link-main {
        margin-left: 0;
    }

    .level-badge-link-icon {
        width: 13px;
        height: 13px;
    }

    .ad-zone {
        padding: 0;
        border: none;
        background: transparent;
    }

    .ad-zone-practice {
        margin-top: 0.35rem;
        margin-bottom: 0.75rem;
    }

    .ad-zone-body,
    .ad-zone .adsbygoogle.ad-slot {
        border-color: var(--border);
        background: var(--card);
    }

    .ad-slot-practiceInline {
        width: 320px;
        height: 100px;
    }

    .ad-zone-label {
        margin: 0 0 0.28rem 0.2rem;
        font-size: 0.64rem;
        letter-spacing: 0.07em;
    }

    .ad-zone-placeholder {
        font-size: 0.76rem;
        padding: 0.3rem 0.55rem;
    }

    .topic-tab {
        padding: 0.5rem 0.3rem;
        font-size: 0.8rem;
    }

    .mode-tab {
        padding: 0.5rem 0.3rem;
        font-size: 0.78rem;
    }

    .mode-icon {
        font-size: 1rem;
    }

    .mode-icon-img {
        width: 17px;
        height: 17px;
    }

    .date-task-tab[data-date-task="birthday"] .mode-icon-img {
        width: 19px;
        height: 19px;
    }

    .mode-desc {
        font-size: 0.6rem;
    }

    .set-prompt-text {
        font-size: 1.3rem;
    }

    .numbers-value {
        min-width: 130px;
        font-size: 1.8rem;
    }

    .numbers-difficulty {
        gap: 0.4rem 0.7rem;
    }

    .numbers-difficulty-title {
        width: 100%;
        text-align: center;
    }

    .numbers-difficulty .toggle-label {
        font-size: 0.75rem;
    }

    .number-token {
        font-size: 0.84rem;
        padding: 0.42rem 0.75rem;
    }

    .numbers-drop-zone,
    .numbers-token-bank {
        min-height: 58px;
        padding: 0.5rem;
    }

    .calendar-card {
        padding: 0.7rem;
    }

    .calendar-day {
        min-height: 34px;
        font-size: 0.8rem;
    }

    .calendar-weekday {
        font-size: 0.66rem;
    }

    .card {
        padding: 1.2rem;
    }

    .lesson-support-copy,
    .lesson-support-actions {
        float: none;
        width: 100%;
        min-width: 0;
    }

    .lesson-support-actions {
        margin-top: 0.6rem;
        justify-content: flex-start;
    }

    .lesson-support-btn,
    .lesson-support-secondary {
        width: 100%;
        justify-content: center;
    }

    .site-footer-inner {
        justify-content: center;
    }

    .site-footer-text,
    .site-footer-links a {
        font-size: 0.8rem;
    }
}