/**
 * Infinity Weight Calculator — Frontend Styles
 *
 * Color palette:
 *   Primary:     #014a88
 *   Dark:        #012e56
 *   Light:       #0562a8
 *   Accent gold: #c2b391
 *   Accent warm: #d4c9a8
 */

/* ── Container ────────────────────────────────────────── */
.iwc-calculator {
    max-width: 600px;
    margin: 40px auto;
    background: linear-gradient(160deg, #0562a8 0%, #014a88 40%, #012e56 100%);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 16px 48px rgba(1, 74, 136, 0.35), 0 2px 8px rgba(0, 0, 0, 0.1);
    color: #fff;
}

/* ── Header ───────────────────────────────────────────── */
.iwc-header {
    text-align: center;
    padding: 32px 24px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.iwc-title {
    font-family: 'title', sans-serif;
    font-size: 22px;
    font-weight: 700;
    margin: 0 0 6px;
    color: #fff;
    letter-spacing: -0.3px;
}

.iwc-subtitle {
    font-family: 'para', sans-serif;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
    font-weight: 400;
}

/* ── Form ─────────────────────────────────────────────── */
.iwc-form {
    padding: 24px 24px 28px;
}

.iwc-row {
    display: grid;
    gap: 12px;
    margin-bottom: 12px;
}

.iwc-row-3 {
    grid-template-columns: 1fr 1fr 1fr;
}

.iwc-row-2 {
    grid-template-columns: 1fr 1fr;
}

.iwc-field label {
    font-family: 'para', sans-serif;
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.55);
    margin-bottom: 6px;
    letter-spacing: 0.3px;
}

.iwc-unit {
    font-weight: 400;
    color: rgba(194, 179, 145, 0.5);
}

.iwc-field input {
    width: 100%;
    padding: 12px 14px;
    border: 1.5px solid rgba(255, 255, 255, 0.12);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.07);
    color: #fff;
    font-size: 15px;
    font-family: inherit;
    font-weight: 600;
    transition: border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
    outline: none;
    box-sizing: border-box;
    -moz-appearance: textfield;
}

.iwc-field input::-webkit-outer-spin-button,
.iwc-field input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.iwc-field input::placeholder {
    color: rgba(255, 255, 255, 0.2);
}

.iwc-field input:focus {
    border-color: #c2b391;
    background: rgba(194, 179, 145, 0.08);
    box-shadow: 0 0 0 3px rgba(194, 179, 145, 0.15);
}

/* ── Button ───────────────────────────────────────────── */
.iwc-btn {
    width: 100%;
    padding: 14px 20px;
    margin-top: 8px;
    border: none;
    border-radius: 10px;
    background: linear-gradient(135deg, #c2b391, #a89770);
    color: #012e56;
    font-size: 15px;
    font-weight: 700;
    font-family: 'title', sans-serif;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.25s ease;
    letter-spacing: 0.2px;
    box-shadow: 0 4px 12px rgba(194, 179, 145, 0.25);
}

.iwc-btn:hover {
    background: linear-gradient(135deg, #d4c9a8, #c2b391);
    box-shadow: 0 6px 20px rgba(194, 179, 145, 0.35);
    transform: translateY(-1px);
}

.iwc-btn:active {
    transform: translateY(0) scale(0.98);
    box-shadow: 0 2px 8px rgba(194, 179, 145, 0.2);
}

/* ── Results ──────────────────────────────────────────── */
.iwc-results {
    display: none;
    padding: 0 24px 24px;
}

.iwc-results.iwc-visible {
    display: block;
    animation: iwcFadeSlide 0.45s ease forwards;
}

@keyframes iwcFadeSlide {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.iwc-results-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 14px;
}

.iwc-result-card {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    padding: 14px 16px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    transition: background 0.25s ease;
}

.iwc-result-card:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Highlighted chargeable weight card */
.iwc-result-highlight {
    background: rgba(194, 179, 145, 0.12);
    border-color: rgba(194, 179, 145, 0.3);
    grid-column: span 2;
}

.iwc-result-highlight .iwc-result-value {
    color: #d4c9a8;
    font-size: 24px;
}

.iwc-result-label {
    font-family: 'para', sans-serif;
    font-size: 11px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.45);
    text-transform: uppercase;
    letter-spacing: 0.6px;
}

.iwc-result-value {
    font-family: 'title', sans-serif;
    font-size: 20px;
    font-weight: 700;
    color: #fff;
}

.iwc-result-unit {
    font-family: 'para', sans-serif;
    font-size: 12px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.35);
}

.iwc-result-tariff {
    font-family: 'para', sans-serif;
    font-size: 14px;
    font-weight: 600;
    color: #c2b391;
}

/* ── Total price box ──────────────────────────────────── */
.iwc-total-box {
    background: linear-gradient(135deg, #c2b391, #a89770);
    border-radius: 12px;
    padding: 20px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 4px 16px rgba(194, 179, 145, 0.2);
}

.iwc-total-label {
    font-family: 'para', sans-serif;
    font-size: 14px;
    font-weight: 600;
    color: rgba(1, 46, 86, 0.6);
}

.iwc-total-price {
    font-family: 'title', sans-serif;
    font-size: 28px;
    font-weight: 700;
    color: #012e56;
    letter-spacing: -0.5px;
}

/* ── Responsive ───────────────────────────────────────── */
@media (max-width: 520px) {
    .iwc-calculator {
        margin: 20px 12px;
        border-radius: 14px;
    }

    .iwc-header {
        padding: 24px 20px 16px;
    }

    .iwc-form {
        padding: 20px 16px 22px;
    }

    .iwc-results {
        padding: 0 16px 20px;
    }

    .iwc-row-3 {
        grid-template-columns: 1fr 1fr 1fr;
        gap: 8px;
    }

    .iwc-row-2 {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }

    .iwc-field input {
        padding: 10px 12px;
        font-size: 14px;
    }

    .iwc-results-grid {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }

    .iwc-result-highlight {
        grid-column: span 2;
    }

    .iwc-result-value {
        font-size: 18px;
    }

    .iwc-result-highlight .iwc-result-value {
        font-size: 22px;
    }

    .iwc-total-price {
        font-size: 24px;
    }

    .iwc-title {
        font-size: 19px;
    }
}

@media (max-width: 360px) {
    .iwc-row-3 {
        grid-template-columns: 1fr;
    }

    .iwc-row-2 {
        grid-template-columns: 1fr;
    }

    .iwc-results-grid {
        grid-template-columns: 1fr;
    }

    .iwc-result-highlight {
        grid-column: span 1;
    }
}