/* =========================
   Solution Section
========================= */

.fb-solution-section {
    position: relative;
    overflow: hidden;
    background: #f4f4f1;
        
}

.fb-solution-section::before {
    content: "";
    position: absolute;
    right: -180px;
    bottom: -180px;
    width: 480px;
    height: 480px;
    border-radius: 999px;
    background: rgba(7, 19, 38, 0.08);
    filter: blur(80px);
    pointer-events: none;
}

.fb-solution-container {
    position: relative;
    z-index: 2;

    max-width: 1320px;
    margin: 0 auto;
    padding: 100px 32px;
}


/* =========================
   Header
========================= */

.fb-solution-header {
    max-width: 860px;
    margin-bottom: 52px;
}

.fb-solution-header h2 {
    max-width: 820px;

    color: var(--text-main);
    font-size: clamp(2.1rem, 4vw, 4rem);
    line-height: 1;
    letter-spacing: -0.065em;
    font-weight: 850;
}

.fb-solution-header p {
    max-width: 760px;
    margin-top: 20px;

    color: var(--text-muted);
    font-size: clamp(1rem, 1.4vw, 1.12rem);
    line-height: 1.75;
}


/* =========================
   Layout
========================= */

.fb-solution-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(420px, 1.05fr);
    gap: 24px;
    align-items: stretch;
}


/* =========================
   Process Card
========================= */

.fb-solution-process-card {
    padding: 30px;

    border-radius: 30px;
    background: #ffffff;
    border: 1px solid rgba(222, 222, 216, 0.9);
    box-shadow: 0 20px 54px rgba(31, 31, 31, 0.06);
}

.fb-solution-step {
    display: grid;
    grid-template-columns: 54px 1fr;
    gap: 18px;
    align-items: flex-start;
}

.fb-solution-step-number {
    width: 54px;
    height: 54px;

    display: inline-flex;
    align-items: center;
    justify-content: center;

    border-radius: 18px;
    background:
        radial-gradient(circle at top right, rgba(213, 173, 40, 0.42), transparent 42%),
        var(--navy);

    color: var(--gold);
    font-size: 0.86rem;
    font-weight: 850;
    box-shadow: 0 14px 30px rgba(7, 19, 38, 0.18);
}

.fb-solution-step h3 {
    color: var(--text-main);
    font-size: 1.18rem;
    line-height: 1.25;
    letter-spacing: -0.03em;
    font-weight: 850;
    margin-bottom: 8px;
}

.fb-solution-step p {
    max-width: 520px;

    color: var(--text-muted);
    font-size: 0.96rem;
    line-height: 1.65;
}

.fb-solution-connector {
    width: 2px;
    height: 44px;
    margin: 10px 0 10px 26px;
    background: linear-gradient(180deg, rgba(213, 173, 40, 0.55), rgba(222, 222, 216, 0.5));
    border-radius: 999px;
}


/* =========================
   API Card
========================= */

.fb-solution-api-card {
    position: relative;
    overflow: hidden;

    padding: 30px;

    border-radius: 30px;
    background:
        radial-gradient(circle at top right, rgba(213, 173, 40, 0.18), transparent 34%),
        linear-gradient(180deg, #101827 0%, #071326 100%);

    border: 1px solid rgba(255, 255, 255, 0.11);
    box-shadow: 0 28px 82px rgba(7, 19, 38, 0.24);
}

.fb-solution-api-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.045), transparent);
    pointer-events: none;
}

.fb-solution-api-top {
    position: relative;
    z-index: 2;

    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 28px;
}

.fb-solution-api-top span {
    width: fit-content;

    padding: 7px 11px;
    border-radius: 999px;
    background: rgba(213, 173, 40, 0.14);
    border: 1px solid rgba(213, 173, 40, 0.24);

    color: var(--gold);
    font-size: 0.76rem;
    font-weight: 850;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.fb-solution-api-top strong {
    max-width: 540px;

    color: #ffffff;
    font-size: clamp(1.55rem, 2.6vw, 2.45rem);
    line-height: 1.04;
    letter-spacing: -0.055em;
    font-weight: 850;
}

.fb-solution-api-line {
    position: relative;
    z-index: 2;

    display: flex;
    align-items: center;
    gap: 12px;

    padding: 14px;
    margin-bottom: 18px;

    border-radius: 18px;
    background: rgba(255, 255, 255, 0.065);
    border: 1px solid rgba(255, 255, 255, 0.095);
}

.fb-method {
    flex-shrink: 0;

    padding: 6px 9px;
    border-radius: 999px;
    background: rgba(213, 173, 40, 0.16);

    color: var(--gold);
    font-size: 0.76rem;
    font-weight: 850;
}

.fb-solution-api-line code {
    min-width: 0;
    overflow-wrap: anywhere;

    color: rgba(255, 255, 255, 0.82);
    font-size: 0.9rem;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.fb-solution-mini-grid {
    position: relative;
    z-index: 2;

    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 18px;
}

.fb-solution-mini-grid div {
    padding: 16px;

    border-radius: 18px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.09);
}

.fb-solution-mini-grid span {
    display: block;

    color: rgba(255, 255, 255, 0.48);
    font-size: 0.72rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 7px;
}

.fb-solution-mini-grid strong {
    display: block;

    color: #ffffff;
    font-size: 0.9rem;
    line-height: 1.25;
    font-weight: 800;
}

.fb-solution-code-preview {
    position: relative;
    z-index: 2;

    overflow: hidden;

    border-radius: 20px;
    background: rgba(0, 0, 0, 0.22);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.fb-solution-code-preview pre {
    margin: 0;
    padding: 20px;
    overflow-x: auto;

    color: rgba(255, 255, 255, 0.82);
    font-size: 0.84rem;
    line-height: 1.7;
}

.fb-solution-code-preview code {
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    white-space: pre;
}


/* =========================
   Responsive
========================= */

@media (max-width: 1120px) {
    .fb-solution-layout {
        grid-template-columns: 1fr;
    }

    .fb-solution-api-card,
    .fb-solution-process-card {
        max-width: 900px;
    }
}

@media (max-width: 760px) {
    .fb-solution-container {
        padding: 76px 22px;
    }

    .fb-solution-header {
        margin-bottom: 38px;
    }

    .fb-solution-process-card,
    .fb-solution-api-card {
        padding: 24px;
        border-radius: 24px;
    }

    .fb-solution-step {
        grid-template-columns: 48px 1fr;
        gap: 15px;
    }

    .fb-solution-step-number {
        width: 48px;
        height: 48px;
        border-radius: 16px;
    }

    .fb-solution-connector {
        height: 34px;
        margin-left: 23px;
    }

    .fb-solution-mini-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .fb-solution-api-line {
        align-items: flex-start;
        flex-direction: column;
        gap: 10px;
    }

    .fb-solution-code-preview pre {
        font-size: 0.76rem;
        padding: 18px;
    }
}

@media (max-width: 520px) {
    .fb-solution-container {
        padding: 64px 18px;
    }

    .fb-solution-header h2 {
        letter-spacing: -0.052em;
    }

    .fb-solution-header p {
        margin-top: 18px;
    }

    .fb-solution-process-card,
    .fb-solution-api-card {
        padding: 20px;
        border-radius: 22px;
    }

    .fb-solution-step {
        grid-template-columns: 1fr;
    }

    .fb-solution-step-number {
        width: 46px;
        height: 46px;
    }

    .fb-solution-connector {
        width: 100%;
        height: 1px;
        margin: 20px 0;
        background: linear-gradient(90deg, rgba(213, 173, 40, 0.55), rgba(222, 222, 216, 0.5));
    }

    .fb-solution-mini-grid {
        grid-template-columns: 1fr;
    }

    .fb-solution-code-preview pre {
        font-size: 0.68rem;
        line-height: 1.6;
    }
}