.main-text {
    font-size: clamp(34px, 4vw, 52px);
}

.feed.optiver p,
.feed.optiver span,
.feed.optiver div,
.feed.optiver button {
    color: var(--eq-ink-soft, #14233a);
}

.second-text {
    height: auto;
    font-size: 30px;
}

/* ---------- Active Question Card ---------- */

.equation-box {
    position: relative;
    width: min(590px, calc(100% - 40px));
    min-height: 250px;
    overflow: hidden;
    margin: 20px auto 22px;
    padding: 18px 18px 38px;
    border: 1px solid rgba(245, 183, 0, 0.30);
    border-radius: 28px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.97), rgba(255, 255, 255, 0.86)),
        radial-gradient(circle at 92% 10%, rgba(245, 183, 0, 0.16), transparent 18rem);
    box-shadow:
        0 24px 70px rgba(6, 21, 40, 0.12),
        0 16px 44px rgba(245, 183, 0, 0.16);
    backdrop-filter: blur(14px);
}

.equation-box::before {
    content: "";
    position: absolute;
    inset: 0 0 auto;
    height: 6px;
    background: linear-gradient(90deg, #e8aa00, #ffcf3f, #fff1a6);
}

.equation-box::after {
    content: "";
    position: absolute;
    right: -54px;
    bottom: -72px;
    width: 180px;
    height: 180px;
    border-radius: 999px;
    background: rgba(245, 183, 0, 0.10);
    pointer-events: none;
}

.equation-box > div:first-child {
    position: relative;
    z-index: 1;
    align-items: flex-start;
    gap: 14px;
}

.equation-box p {
    margin: 0;
    color: var(--eq-muted, #607089) !important;
    font-size: 14px;
    line-height: 1.35;
    font-weight: 700;
}

.equation-box p[style*="font-weight: bold"] {
    color: var(--eq-ink, #061528) !important;
    font-size: 15px;
    font-weight: 900 !important;
    margin-top: 10px;
}

#counter {
    color: #9a7100 !important;
    font-weight: 950;
}

#countdown-timer {
    color: var(--eq-ink, #061528) !important;
    font-weight: 850;
    white-space: nowrap;
}

#countdown {
    color: #9a7100 !important;
    font-weight: 950;
}

/* ---------- Equation ---------- */

.equation-container {
    position: relative;
    z-index: 1;
    width: 100%;
    min-height: 135px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.equation-components {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin: 24px 0 8px;
}

.equation-components > div {
    margin: 0 3px;
    color: var(--eq-ink, #061528) !important;
    font-size: 32px !important;
    line-height: 1;
    font-weight: 900;
    letter-spacing: -0.035em;
}

.equation-components > div:last-child {
    margin-right: 0;
}

/* ---------- Fractions ---------- */

.fraction {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 5px;
}

.fraction .numerator {
    color: var(--eq-ink, #061528) !important;
    font-size: 20px;
    line-height: 1.05;
    font-weight: 900;
}

.fraction .denominator {
    margin-top: 4px;
    padding-top: 4px;
    border-top: 2px solid rgba(6, 21, 40, 0.78);
    color: var(--eq-ink, #061528) !important;
    font-size: 20px;
    line-height: 1.05;
    font-weight: 900;
}

.equation-components .fraction .numerator,
.equation-components .fraction .denominator {
    font-size: 30px !important;
}

/* ---------- Answers ---------- */

.answer-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    width: min(680px, calc(100% - 40px));
    margin: 0 auto 18px;
}

.answer-buttons button {
    position: relative;
    width: 128px;
    min-height: 82px;
    padding: 16px;
    overflow: hidden;
    border: 1px solid rgba(245, 183, 0, 0.28);
    border-radius: 20px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.88)),
        radial-gradient(circle at 85% 10%, rgba(245, 183, 0, 0.12), transparent 7rem);
    box-shadow:
        0 16px 38px rgba(6, 21, 40, 0.08),
        0 10px 28px rgba(245, 183, 0, 0.10);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--eq-ink, #061528) !important;
    font-weight: 900;
    transition:
        transform 180ms ease,
        box-shadow 180ms ease,
        border-color 180ms ease,
        background 180ms ease;
}

.answer-buttons button::after {
    content: "";
    position: absolute;
    right: -34px;
    bottom: -42px;
    width: 84px;
    height: 84px;
    border-radius: 999px;
    background: rgba(245, 183, 0, 0.10);
    pointer-events: none;
    transition: transform 180ms ease, opacity 180ms ease;
}

.answer-buttons button:hover {
    transform: translateY(-3px);
    border-color: rgba(245, 183, 0, 0.64);
    background:
        linear-gradient(180deg, #ffffff, #fffaf0),
        radial-gradient(circle at 85% 10%, rgba(245, 183, 0, 0.18), transparent 7rem);
    box-shadow:
        0 24px 54px rgba(6, 21, 40, 0.12),
        0 18px 38px rgba(245, 183, 0, 0.20);
}

.answer-buttons button:hover::after {
    transform: scale(1.12);
    opacity: 0.88;
}

.answer-text {
    color: var(--eq-ink, #061528) !important;
    font-size: 21px;
    line-height: 1;
    font-weight: 950;
    letter-spacing: -0.025em;
}

/* ---------- Page Overrides ---------- */

.container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 50vh;
    margin-top: 0;
    padding: 0;
}

.feed {
    min-height: 750px;
    background-color: #f9f9f9;
}

/* ---------- Finish Button ---------- */

.skip-button {
    justify-content: center;
    align-items: center;
    display: flex;
}

.skip-button button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 250px;
    min-height: 50px;
    margin-top: 16px;
    padding: 12px 22px;
    border: none;
    border-radius: 999px;
    background: linear-gradient(135deg, #e8aa00, #ffcf3f);
    box-shadow: 0 18px 38px rgba(245, 183, 0, 0.28);
    color: white !important;
    font-size: 16px;
    font-weight: 850;
    cursor: pointer;
    transition: transform 180ms ease, box-shadow 180ms ease, filter 180ms ease;
}

.skip-button button:hover {
    transform: translateY(-2px);
    background: linear-gradient(135deg, #f5b700, #ffd960);
    box-shadow: 0 24px 52px rgba(245, 183, 0, 0.34);
    filter: brightness(1.03);
    font-weight: 850;
}

/* ---------- Responsive ---------- */

@media (max-width: 1000px) {
    .learning-list {
        grid-template-columns: 1fr;
        padding: 0 20px;
    }

    .header-details {
        display: none;
    }

    .header-info {
        display: none;
    }
}

@media screen and (max-width: 768px) {
    .header-details {
        display: block;
    }

    .header-info {
        display: block;
    }

    .main-text {
        font-size: 31px;
        justify-content: center;
        margin: auto 0;
    }

    .second-text {
        height: auto;
        font-size: 24px;
    }

    .equation-box {
        width: calc(100% - 28px);
        min-width: 0;
        min-height: 240px;
        margin-top: 0;
        margin-bottom: 18px;
        padding: 16px 14px 30px;
        border-radius: 24px;
    }

    .equation-box > div:first-child {
        flex-direction: column;
        gap: 4px;
    }

    .equation-box p {
        padding-left: 6px !important;
        padding-right: 6px !important;
        font-size: 13px;
    }

    #countdown-timer {
        margin-left: 0 !important;
        white-space: normal;
    }

    .equation-container {
        min-height: 120px;
    }

    .equation-components {
        gap: 8px;
        margin-top: 18px;
    }

    .equation-components > div {
        font-size: 27px !important;
    }

    .equation-components .fraction .numerator,
    .equation-components .fraction .denominator {
        font-size: 26px !important;
    }

    .answer-buttons {
        width: calc(100% - 28px);
        gap: 10px;
        margin: 0 auto 12px;
    }

    .answer-buttons button {
        flex: 1 1 calc(50% - 10px);
        width: auto;
        min-width: 120px;
        min-height: 72px;
        padding: 10px;
        border-radius: 17px;
    }

    .answer-text {
        font-size: 17px;
    }

    .fraction .numerator {
        font-size: 16px;
    }

    .fraction .denominator {
        margin-top: 3px;
        padding-top: 3px;
        border-top: 1.5px solid rgba(6, 21, 40, 0.78);
        font-size: 16px;
    }

    .skip-button button {
        width: calc(100% - 56px);
        max-width: 320px;
        min-width: 0;
        font-size: 15px;
    }
}

@media screen and (max-width: 430px) {
    .answer-buttons button {
        flex-basis: 100%;
    }

    .equation-components > div {
        font-size: 24px !important;
    }

    .equation-components .fraction .numerator,
    .equation-components .fraction .denominator {
        font-size: 23px !important;
    }
}

/* ---------- Optiver Sequences Tool Fixes ---------- */

.optiver-sequences .heading-text {
    color: #ffffff !important;
    font-weight: 850;
    letter-spacing: -0.048em;
    text-shadow: 0 18px 44px rgba(6, 21, 40, 0.24);
}

.optiver-sequences #quiz-form .equation-box {
    width: min(720px, calc(100% - 40px));
    min-height: 265px;
}

.optiver-sequences #quiz-form .equation-container {
    min-height: 138px;
    overflow: visible !important;
}

.optiver-sequences #quiz-form .equation-components {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: row !important;
    flex-wrap: wrap;
    gap: 8px;
    width: 100%;
    margin: 20px auto 6px;
    padding: 0 8px;
    overflow: visible !important;
    white-space: normal;
}

.optiver-sequences #quiz-form .equation-components > div,
.optiver-sequences #quiz-form .equation-components > p,
.optiver-sequences #quiz-form .equation-components .second-text {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    width: auto !important;
    min-width: auto !important;
    max-width: none !important;
    height: auto !important;
    margin: 0 !important;
    padding: 0 !important;
    color: #102033 !important;
    font-size: clamp(30px, 3.4vw, 42px) !important;
    line-height: 1.05 !important;
    font-weight: 820 !important;
    letter-spacing: -0.035em;
    white-space: nowrap;
}

.optiver-sequences #quiz-form .equation-components .fraction {
    display: inline-flex !important;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    padding: 0 2px;
    overflow: visible !important;
    white-space: nowrap;
}

.optiver-sequences #quiz-form .equation-components .fraction .numerator,
.optiver-sequences #quiz-form .equation-components .fraction .denominator,
.optiver-sequences #quiz-form .equation-components .main-text-frac {
    color: #102033 !important;
    font-size: clamp(28px, 3vw, 38px) !important;
    line-height: 1.02;
    font-weight: 820 !important;
}

.optiver-sequences #quiz-form .equation-components .fraction .denominator {
    margin-top: 4px;
    padding-top: 4px;
    border-top: 2px solid rgba(16, 32, 51, 0.68);
}

.optiver-sequences .answer-buttons {
    margin-top: 4px;
}

.optiver-sequences .answer-buttons button {
    min-height: 84px;
}

.optiver-sequences .answer-buttons button,
.optiver-sequences .answer-buttons button .answer-text,
.optiver-sequences .answer-buttons button .fraction .numerator,
.optiver-sequences .answer-buttons button .fraction .denominator {
    font-size: 21px;
    font-weight: 900;
}

@media screen and (max-width: 768px) {
    .optiver-sequences .heading-text {
        color: #ffffff !important;
        font-weight: 850;
        letter-spacing: -0.04em;
    }

    .optiver-sequences #quiz-form .equation-box {
        width: calc(100% - 28px);
        min-height: 255px;
    }

    .optiver-sequences #quiz-form .equation-container {
        min-height: 130px;
    }

    .optiver-sequences #quiz-form .equation-components {
        justify-content: center;
        flex-wrap: wrap;
        gap: 7px;
        padding: 0 6px !important;
        overflow: visible !important;
    }

    .optiver-sequences #quiz-form .equation-components > div,
    .optiver-sequences #quiz-form .equation-components > p,
    .optiver-sequences #quiz-form .equation-components .second-text {
        font-size: 30px !important;
        font-weight: 820 !important;
    }

    .optiver-sequences #quiz-form .equation-components .fraction .numerator,
    .optiver-sequences #quiz-form .equation-components .fraction .denominator,
    .optiver-sequences #quiz-form .equation-components .main-text-frac {
        font-size: 28px !important;
        font-weight: 820 !important;
    }

    .optiver-sequences .answer-buttons button {
        min-height: 76px;
    }
}

@media screen and (max-width: 430px) {
    .optiver-sequences #quiz-form .equation-components {
        gap: 6px;
    }

    .optiver-sequences #quiz-form .equation-components > div,
    .optiver-sequences #quiz-form .equation-components > p,
    .optiver-sequences #quiz-form .equation-components .second-text {
        font-size: 26px !important;
    }

    .optiver-sequences #quiz-form .equation-components .fraction .numerator,
    .optiver-sequences #quiz-form .equation-components .fraction .denominator,
    .optiver-sequences #quiz-form .equation-components .main-text-frac {
        font-size: 24px !important;
    }
}