body {
    font-family: Inter, Arial, sans-serif;
    margin: 0;
    padding: 48px 24px;
    background: #f4f7f6;
    color: #17211d;
}

.card {
    max-width: 1000px;
    margin: 0 auto;
    background: #ffffff;
    padding: 40px;
    border-radius: 18px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
}

h1 {
    margin: 0 0 6px;
    font-size: 32px;
    letter-spacing: -0.5px;
}

h2 {
    margin-top: 0;
}

h3 {
    margin-top: 32px;
    margin-bottom: 10px;
}

.subtitle {
    color: #557068;
    font-size: 16px;
    margin-bottom: 28px;
}

p {
    line-height: 1.6;
}

input[type="file"] {
    margin: 20px 0;
    padding: 14px;
    border: 1px solid #d6dfdc;
    border-radius: 10px;
    background: #f9fbfa;
    width: 100%;
    box-sizing: border-box;
}

button {
    padding: 13px 22px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;

    border: none;
    border-radius: 10px;

    background: #143c32;
    color: white;

    transition: transform 0.15s ease, opacity 0.15s ease;
}

button:hover {
    transform: translateY(-1px);
    opacity: 0.92;
}

#status {
    margin-top: 18px;
    font-weight: 600;
    color: #557068;
}

#result {
    margin-top: 32px;
    display: none;

    /* IMPORTANT: remove the old pre-wrap behavior */
    white-space: normal;

    background: transparent;
    padding: 0;
}

.results-card {
    margin-top: 24px;
    padding: 32px;

    background: #f8faf9;
    border: 1px solid #dde6e2;
    border-radius: 16px;
}

.value-driver {
    display: inline-block;

    margin: 0 0 20px;
    padding: 7px 12px;

    background: #dcefe8;
    color: #184c3d;

    border-radius: 999px;

    font-size: 13px;
    font-weight: 700;
    text-transform: capitalize;
}

.recommendation {
    margin-bottom: 28px;
    padding: 18px 20px;

    background: #ffffff;
    border-left: 4px solid #143c32;
    border-radius: 10px;

    font-size: 18px;
    font-weight: 700;
}

.metrics {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;

    margin-bottom: 32px;
}

.metric {
    padding: 18px;

    background: white;
    border: 1px solid #dde6e2;
    border-radius: 12px;
}

.metric span {
    display: block;

    margin-bottom: 8px;

    color: #687872;
    font-size: 13px;
    font-weight: 600;
}

.metric strong {
    display: block;

    font-size: 20px;
    color: #17211d;
}

.results-card ul {
    margin-top: 8px;
    padding-left: 22px;
}

.results-card li {
    margin-bottom: 8px;
    line-height: 1.5;
}

.assumptions {
    display: grid;
    gap: 10px;
}

.assumption {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 12px;
    align-items: center;

    padding: 14px 16px;

    background: white;
    border: 1px solid #dde6e2;
    border-radius: 10px;
}

.assumption small {
    color: #71817b;
}


/* -----------------------------
   API key modal
----------------------------- */

.modal-overlay {
    position: fixed;
    inset: 0;

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

    background: rgba(5, 15, 12, 0.78);
    backdrop-filter: blur(6px);

    z-index: 9999;
}

.modal-overlay.hidden {
    display: none;
}

.modal-card {
    width: min(420px, calc(100% - 40px));
    padding: 32px;

    background: #ffffff;
    border-radius: 16px;

    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.25);

    text-align: center;
}

.modal-card h2 {
    margin-top: 0;
}

.modal-card input {
    width: 100%;
    box-sizing: border-box;

    margin: 20px 0 12px;
    padding: 14px 16px;

    border: 1px solid #d5d5d5;
    border-radius: 8px;

    font-size: 16px;
}

.modal-card button {
    width: 100%;
}

.error-message {
    min-height: 20px;
    margin-bottom: 0;
    color: #a33a3a;
}


/* -----------------------------
   Mobile
----------------------------- */

@media (max-width: 800px) {
    body {
        padding: 24px 14px;
    }

    .card {
        padding: 24px;
    }

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

    .assumption {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 500px) {
    .metrics {
        grid-template-columns: 1fr;
    }
}