/* =========================================================
   LAW OF SINES PRACTICE
   ========================================================= */

:root
{
    --losp-navy: #0f172a;
    --losp-slate: #475569;
    --losp-muted: #64748b;

    --losp-border: #d7e2ec;

    --losp-white: #ffffff;
    --losp-surface: #f8fafc;

    --losp-teal: #0f766e;
    --losp-teal-bright: #159e9c;
    --losp-teal-soft: #ecfdf5;

    --losp-blue: #2563eb;
    --losp-blue-soft: #eff6ff;

    --losp-gold: #d97706;
    --losp-gold-soft: #fff7ed;

    --losp-purple: #7c3aed;
    --losp-purple-soft: #f5f3ff;

    --losp-green: #15803d;
    --losp-green-soft: #f0fdf4;

    --losp-shadow:
        0 1rem 2.5rem
        rgba(
            15,
            23,
            42,
            0.08
        );

    --losp-shadow-small:
        0 0.75rem 2rem
        rgba(
            15,
            23,
            42,
            0.06
        );
}


/* =========================================================
   BASE
   ========================================================= */

#law-of-sines-practice
{
    scroll-margin-top: 5rem;

    color: var(--losp-slate);

    font-family:
        Inter,
        Arial,
        sans-serif;
}

#law-of-sines-practice h2,
#law-of-sines-practice h3
{
    color: var(--losp-navy);
}

#law-of-sines-practice .lead
{
    color: var(--losp-slate);

    font-size:
        clamp(
            1.05rem,
            2vw,
            1.2rem
        );

    line-height: 1.75;
}


/* =========================================================
   INTRO / ESSENTIALS
   ========================================================= */

.losp-intro-card
{
    padding:
        clamp(
            1.35rem,
            4vw,
            2rem
        );

    background:
        linear-gradient(
            135deg,
            var(--losp-teal-soft),
            var(--losp-blue-soft)
        );

    border:
        1px solid
        rgba(
            13,
            148,
            136,
            0.22
        );

    border-radius: 1.25rem;

    box-shadow: var(--losp-shadow-small);
}

.losp-card-eyebrow,
.losp-level-label,
.losp-problem-number,
.losp-solution-label
{
    margin:
        0
        0
        0.45rem;

    color: var(--losp-teal);

    font-size: 0.74rem;
    font-weight: 800;

    letter-spacing: 0.1em;

    line-height: 1.3;

    text-transform: uppercase;
}

.losp-essentials-grid
{
    display: grid;

    grid-template-columns:
        repeat(
            3,
            minmax(0, 1fr)
        );

    gap: 1rem;
}

.losp-essentials-grid article
{
    min-width: 0;

    padding: 1rem;

    text-align: center;

    background:
        rgba(
            255,
            255,
            255,
            0.86
        );

    border:
        1px solid
        rgba(
            148,
            163,
            184,
            0.25
        );

    border-radius: 0.95rem;
}

.losp-essentials-grid h3
{
    display: inline-flex;

    align-items: center;
    justify-content: center;

    min-height: 2.5rem;

    margin-bottom: 0.8rem;

    padding:
        0.4rem
        0.8rem;

    color: var(--losp-white) !important;

    font-weight: 800;

    background: var(--losp-teal);

    border-radius: 999px;
}

.losp-mini-formula
{
    display: grid;

    min-height: 5rem;

    place-items: center;

    color: var(--losp-teal);

    font-weight: 700;
}


/* =========================================================
   RESOURCE ACTIONS
   ========================================================= */

.losp-resource-actions
{
    display: flex;

    flex-wrap: wrap;

    gap: 0.75rem;
}


/* =========================================================
   LEVEL HEADINGS
   ========================================================= */

.losp-level-heading
{
    margin-top:
        clamp(
            3.5rem,
            7vw,
            5rem
        );

    margin-bottom: 1.5rem;

    padding-bottom: 1rem;

    border-bottom:
        1px solid
        var(--losp-border);
}

.losp-level-heading h2
{
    color: var(--losp-navy);

    font-size:
        clamp(
            1.55rem,
            4vw,
            2rem
        );

    font-weight: 800;

    letter-spacing: -0.025em;
}

.losp-level-heading > p:last-child
{
    max-width: 48rem;

    color: var(--losp-slate);

    line-height: 1.7;
}


/* =========================================================
   PROBLEM CARDS
   ========================================================= */

.losp-problem-card
{
    overflow: hidden;

    background: var(--losp-white);

    border:
        1px solid
        var(--losp-border);

    border-radius: 1.2rem;

    box-shadow: var(--losp-shadow-small);
}

.losp-problem-body
{
    padding:
        clamp(
            1.25rem,
            4vw,
            1.8rem
        );
}

.losp-problem-heading
{
    display: flex;

    gap: 1rem;

    align-items: center;
    justify-content: space-between;

    margin-bottom: 0.8rem;
}

.losp-problem-number
{
    margin-bottom: 0;
}

.losp-problem-skill
{
    display: inline-flex;

    flex: 0 0 auto;

    align-items: center;

    padding:
        0.4rem
        0.7rem;

    color: var(--losp-blue);

    font-size: 0.68rem;
    font-weight: 800;

    letter-spacing: 0.06em;

    line-height: 1;

    text-transform: uppercase;

    background: var(--losp-blue-soft);

    border-radius: 999px;
}

.losp-problem-body > h3
{
    max-width: 48rem;

    margin-bottom: 1.25rem;

    color: var(--losp-navy);

    font-weight: 700;

    line-height: 1.5;
}


/* =========================================================
   TRIANGLE DIAGRAMS
   ========================================================= */

.losp-problem-diagram
{
    display: flex;

    align-items: center;
    justify-content: center;

    width: 100%;
    min-height: 19rem;

    margin:
        1.25rem
        0
        1.5rem;

    padding: 1rem;

    overflow: hidden;

    background:
        linear-gradient(
            135deg,
            var(--losp-surface),
            var(--losp-blue-soft)
        );

    border:
        1px solid
        var(--losp-border);

    border-radius: 1rem;
}

.losp-triangle-svg
{
    display: block;

    width: 100%;
    height: auto;

    max-width: 30rem;

    overflow: visible;
}

.losp-triangle-line
{
    fill: none;

    stroke: var(--losp-navy);

    stroke-width: 4;

    stroke-linecap: round;
    stroke-linejoin: round;
}

.losp-angle-label,
.losp-side-label
{
    font-family:
        Inter,
        Arial,
        sans-serif;

    font-weight: 800;
}

.losp-angle-label
{
    fill: var(--losp-teal);

    font-size: 16px;
}

.losp-side-label
{
    fill: var(--losp-navy);

    font-size: 16px;
}


/* =========================================================
   MULTIPLE CHOICE
   ========================================================= */

.losp-choice-grid
{
    display: grid;

    grid-template-columns:
        repeat(
            3,
            minmax(0, 1fr)
        );

    gap: 0.8rem;

    max-width: 36rem;

    margin:
        1.5rem
        0;
}

.losp-choice
{
    display: grid;

    min-height: 4rem;

    padding: 0.7rem;

    place-items: center;

    color: var(--losp-navy);

    font-size: 1rem;
    font-weight: 800;

    background: var(--losp-surface);

    border:
        2px solid
        var(--losp-border);

    border-radius: 0.85rem;
}


/* =========================================================
   EQUATION CHOICES
   ========================================================= */

.losp-equation-choice-grid
{
    display: grid;

    grid-template-columns:
        repeat(
            3,
            minmax(0, 1fr)
        );

    gap: 0.8rem;

    margin:
        1.5rem
        0;
}

.losp-equation-choice
{
    display: grid;

    min-width: 0;
    min-height: 6rem;

    padding:
        0.8rem
        0.5rem;

    place-items: center;

    color: var(--losp-navy);

    background: var(--losp-surface);

    border:
        2px solid
        var(--losp-border);

    border-radius: 0.85rem;
}


/* =========================================================
   SHOW SOLUTION BUTTON
   ========================================================= */

.losp-problem-body > .btn
{
    margin-top: 0.25rem;
}


/* =========================================================
   SOLUTIONS
   ========================================================= */

.losp-solution
{
    margin-top: 1.25rem;

    padding:
        clamp(
            1.1rem,
            3vw,
            1.5rem
        );

    background: var(--losp-surface);

    border:
        1px solid
        var(--losp-border);

    border-left:
        4px solid
        var(--losp-teal);

    border-radius: 0.9rem;
}

.losp-solution-label
{
    margin-bottom: 0.8rem;
}

.losp-solution > p:not(.losp-solution-label)
{
    color: var(--losp-slate);

    line-height: 1.7;
}

.losp-solution-math
{
    display: grid;

    width: 100%;
    min-width: 0;
    min-height: 4rem;

    margin:
        0.8rem
        0
        1rem;

    padding:
        0.8rem
        1rem;

    place-items: center;

    color: var(--losp-teal);

    font-weight: 700;

    background: var(--losp-white);

    border:
        1px solid
        var(--losp-border);

    border-radius: 0.8rem;
}


/* =========================================================
   FINAL ANSWER
   ========================================================= */

.losp-final-answer
{
    display: flex;

    gap: 1rem;

    align-items: center;
    justify-content: space-between;

    width: 100%;
    min-width: 0;

    margin-top: 1rem;

    padding:
        0.9rem
        1rem;

    color: var(--losp-teal);

    font-weight: 800;

    background: var(--losp-teal-soft);

    border:
        1px solid
        rgba(
            13,
            148,
            136,
            0.24
        );

    border-radius: 0.8rem;
}

.losp-final-answer > strong
{
    flex: 0 0 auto;

    color: var(--losp-navy);

    font-size: 0.72rem;
    font-weight: 800;

    letter-spacing: 0.08em;

    text-transform: uppercase;
}


/* =========================================================
   REMINDER CARD
   ========================================================= */

.losp-reminder-card
{
    display: flex;

    gap: 0.9rem;

    align-items: center;

    padding:
        1rem
        1.15rem;

    color: var(--losp-slate);

    line-height: 1.6;

    background: var(--losp-gold-soft);

    border:
        1px solid
        rgba(
            217,
            119,
            6,
            0.25
        );

    border-radius: 0.9rem;
}

.losp-reminder-icon
{
    display: grid;

    flex:
        0
        0
        2.6rem;

    width: 2.6rem;
    height: 2.6rem;

    place-items: center;

    color: var(--losp-gold);

    background:
        rgba(
            245,
            158,
            11,
            0.14
        );

    border-radius: 0.75rem;
}

.losp-reminder-card strong
{
    color: var(--losp-navy);
}


/* =========================================================
   WARNING NOTE
   ========================================================= */

.losp-warning-note
{
    padding:
        0.9rem
        1rem;

    color: var(--losp-slate);

    line-height: 1.65;

    background: var(--losp-gold-soft);

    border:
        1px solid
        rgba(
            217,
            119,
            6,
            0.24
        );

    border-left:
        4px solid
        var(--losp-gold);

    border-radius: 0.8rem;
}

.losp-warning-note strong
{
    color: var(--losp-navy);
}


/* =========================================================
   FINAL REVIEW
   ========================================================= */

.losp-final-review
{
    padding:
        clamp(
            1.35rem,
            4vw,
            2rem
        );

    background:
        linear-gradient(
            135deg,
            var(--losp-teal-soft),
            var(--losp-blue-soft)
        );

    border:
        1px solid
        rgba(
            13,
            148,
            136,
            0.22
        );

    border-radius: 1.15rem;
}

.losp-final-review h2
{
    color: var(--losp-navy);

    font-weight: 800;
}

.losp-process-list
{
    display: grid;

    gap: 0.7rem;

    padding-left: 1.4rem;
}

.losp-process-list li
{
    padding-left: 0.25rem;

    color: var(--losp-slate);

    line-height: 1.6;
}

.losp-process-list li::marker
{
    color: var(--losp-teal);

    font-weight: 800;
}


/* =========================================================
   RELATED RESOURCES
   ========================================================= */

.losp-related-section
{
    margin-top:
        clamp(
            3.5rem,
            7vw,
            5rem
        );
}

.losp-related-section > h2
{
    color: var(--losp-navy);

    font-size:
        clamp(
            1.65rem,
            4vw,
            2.25rem
        );

    font-weight: 800;

    letter-spacing: -0.025em;
}

.losp-related-section > p
{
    max-width: 46rem;

    color: var(--losp-slate);

    line-height: 1.7;
}

.losp-related-grid
{
    display: grid;

    grid-template-columns:
        repeat(
            3,
            minmax(0, 1fr)
        );

    gap: 1rem;
}

.losp-related-card
{
    display: flex;

    flex-direction: column;

    min-width: 0;
    min-height: 100%;

    padding: 1.2rem;

    color: var(--losp-navy);

    text-decoration: none;

    background: var(--losp-white);

    border:
        1px solid
        var(--losp-border);

    border-radius: 1rem;

    box-shadow: var(--losp-shadow-small);

    transition:
        transform 180ms ease,
        border-color 180ms ease,
        box-shadow 180ms ease;
}

.losp-related-card:hover
{
    color: var(--losp-navy);

    text-decoration: none;

    border-color:
        rgba(
            13,
            148,
            136,
            0.5
        );

    box-shadow: var(--losp-shadow);

    transform:
        translateY(-3px);
}

.losp-related-icon
{
    display: grid;

    width: 2.75rem;
    height: 2.75rem;

    margin-bottom: 0.85rem;

    place-items: center;

    color: var(--losp-teal);

    background: var(--losp-teal-soft);

    border-radius: 0.8rem;
}

.losp-related-card h3
{
    margin:
        0
        0
        0.45rem;

    color: inherit;

    font-size: 1rem;
    font-weight: 800;

    line-height: 1.4;
}

.losp-related-card p
{
    margin: 0;

    color: var(--losp-slate);

    font-size: 0.89rem;

    line-height: 1.6;
}


/* =========================================================
   MATHJAX SAFETY
   ========================================================= */

.losp-mini-formula mjx-container,
.losp-choice mjx-container,
.losp-equation-choice mjx-container,
.losp-solution-math mjx-container,
.losp-final-answer mjx-container
{
    max-width: 100%;

    margin: 0 !important;

    overflow-x: auto;
    overflow-y: hidden;
}


/* =========================================================
   GUIDE CONTACT CTA FIX
   ========================================================= */

#guideContactCtaTitle
{
    color: #ffffff !important;
}


/* =========================================================
   ACCESSIBILITY
   ========================================================= */

.losp-related-card:focus-visible,
.losp-resource-actions a:focus-visible,
.losp-problem-body > .btn:focus-visible
{
    outline:
        3px solid
        rgba(
            37,
            99,
            235,
            0.35
        );

    outline-offset: 4px;
}


/* =========================================================
   TABLET
   ========================================================= */

@media (max-width: 991.98px)
{
    .losp-equation-choice-grid
    {
        grid-template-columns: 1fr;
    }

    .losp-related-grid
    {
        grid-template-columns:
            repeat(
                2,
                minmax(0, 1fr)
            );
    }
}


/* =========================================================
   MOBILE
   ========================================================= */

@media (max-width: 767.98px)
{
    #law-of-sines-practice
    {
        overflow-x: hidden;

        padding-top: 4rem !important;
        padding-bottom: 4rem !important;
    }


    /* -----------------------------------------
       Main spacing
       ----------------------------------------- */

    .losp-level-heading
    {
        margin-top: 3.5rem;
    }


    /* -----------------------------------------
       Essentials
       ----------------------------------------- */

    .losp-intro-card
    {
        padding: 1.1rem;

        border-radius: 1rem;
    }

    .losp-essentials-grid
    {
        grid-template-columns: 1fr;

        gap: 0.75rem;
    }

    .losp-essentials-grid article
    {
        padding: 0.9rem;
    }


    /* -----------------------------------------
       Resource buttons
       ----------------------------------------- */

    .losp-resource-actions
    {
        display: grid;

        grid-template-columns: 1fr;
    }

    .losp-resource-actions .btn
    {
        width: 100%;

        text-align: center;
    }


    /* -----------------------------------------
       Problem cards
       ----------------------------------------- */

    .losp-problem-card
    {
        border-radius: 1rem;
    }

    .losp-problem-body
    {
        padding: 1.1rem;
    }

    .losp-problem-heading
    {
        align-items: flex-start;

        flex-direction: column;

        gap: 0.55rem;
    }

    .losp-problem-skill
    {
        align-self: flex-start;
    }

    .losp-problem-body > h3
    {
        font-size: 1.05rem;

        line-height: 1.55;
    }


    /* -----------------------------------------
       Triangle diagrams
       ----------------------------------------- */

    .losp-problem-diagram
    {
        min-height: 15rem;

        margin:
            1rem
            0
            1.25rem;

        padding:
            0.6rem
            0.25rem;
    }

    .losp-triangle-svg
    {
        width: 100%;

        max-width: 24rem;
    }

    .losp-angle-label,
    .losp-side-label
    {
        font-size: 15px;
    }


    /* -----------------------------------------
       Choice cards
       ----------------------------------------- */

    .losp-choice-grid
    {
        grid-template-columns:
            repeat(
                3,
                minmax(0, 1fr)
            );

        gap: 0.5rem;

        width: 100%;
    }

    .losp-choice
    {
        min-width: 0;
        min-height: 3.6rem;

        padding: 0.5rem;

        font-size: 0.9rem;
    }


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

    .losp-equation-choice-grid
    {
        grid-template-columns: 1fr;
    }

    .losp-equation-choice
    {
        min-height: 4.8rem;

        padding:
            0.7rem
            0.35rem;
    }


    /* -----------------------------------------
       Solutions
       ----------------------------------------- */

    .losp-solution
    {
        padding: 1rem;
    }

    .losp-solution-math
    {
        width: 100%;
        min-width: 0;

        padding:
            0.7rem
            0.4rem;
    }

    .losp-mini-formula mjx-container,
    .losp-choice mjx-container,
    .losp-equation-choice mjx-container,
    .losp-solution-math mjx-container
    {
        width: 100%;
        max-width: 100%;

        overflow-x: auto;
        overflow-y: hidden;
    }


    /* -----------------------------------------
       Final answer
       ----------------------------------------- */

    .losp-final-answer
    {
        align-items: flex-start;

        flex-direction: column;

        gap: 0.55rem;

        width: 100%;
        min-width: 0;
    }

    .losp-final-answer mjx-container
    {
        width: 100%;
        max-width: 100%;

        overflow-x: auto;
        overflow-y: hidden;

        text-align: left !important;
    }


    /* -----------------------------------------
       Reminder
       ----------------------------------------- */

    .losp-reminder-card
    {
        align-items: flex-start;
    }


    /* -----------------------------------------
       Final review
       ----------------------------------------- */

    .losp-final-review
    {
        padding: 1.1rem;

        border-radius: 1rem;
    }


    /* -----------------------------------------
       Related resources
       ----------------------------------------- */

    .losp-related-grid
    {
        grid-template-columns: 1fr;
    }

    .losp-related-card
    {
        padding: 1.05rem;
    }
}


/* =========================================================
   SMALL MOBILE
   ========================================================= */

@media (max-width: 479.98px)
{
    .losp-problem-body
    {
        padding: 1rem;
    }

    .losp-problem-diagram
    {
        min-height: 13.5rem;
    }

    .losp-triangle-svg
    {
        max-width: 21rem;
    }

    .losp-choice-grid
    {
        grid-template-columns: 1fr;
    }

    .losp-choice
    {
        min-height: 3.25rem;
    }

    .losp-reminder-card
    {
        flex-direction: column;
    }
}


/* =========================================================
   REDUCED MOTION
   ========================================================= */

@media (prefers-reduced-motion: reduce)
{
    .losp-related-card
    {
        transition: none;
    }

    .losp-related-card:hover
    {
        transform: none;
    }
}


/* =========================================================
   PRINT
   ========================================================= */

@media print
{
    .losp-resource-actions,
    .losp-related-section,
    .losp-problem-body > button
    {
        display: none !important;
    }

    .losp-problem-card,
    .losp-intro-card,
    .losp-final-review
    {
        break-inside: avoid;

        box-shadow: none;
    }

    .losp-problem-card .collapse
    {
        display: block !important;
    }

    .losp-problem-diagram
    {
        min-height: auto;
    }

    .losp-mini-formula,
    .losp-equation-choice,
    .losp-solution-math,
    .losp-final-answer
    {
        overflow: visible;
    }
}