.calc-app {
    --calc-border: #d7dde5;
    --calc-border-strong: #c7ced8;
    --calc-surface: #ffffff;
    --calc-surface-muted: #f7f9fc;
    --calc-surface-soft: #f3f6fa;
    --calc-text: #1f2937;
    --calc-text-muted: #5b6777;
    --calc-primary: #245d7a;
    --calc-primary-hover: #1e4f68;
    --calc-secondary: #6b7280;
    --calc-secondary-hover: #596170;
    --calc-danger: #a23b3b;
    --calc-danger-hover: #892f2f;
    --calc-success: #2f6b4f;
    --calc-success-hover: #25563f;
    --calc-input-bg: #f8fafc;
    --calc-highlight-soft: #f3efe8;
    --calc-info-soft: #edf4f8;
    --calc-observation-bg: #eef2f6;
    --calc-radius: 12px;
    --calc-radius-sm: 10px;
    --calc-shadow: 0 1px 2px rgba(16, 24, 40, 0.04);
    --calc-shadow-soft: 0 8px 24px rgba(15, 23, 42, 0.05);

    width: 100%;
    max-width: 1600px;
    margin: 0 auto;
    color: var(--calc-text);
    font-family: inherit;
}

.calc-header-fields {
    display: grid;
    grid-template-columns: repeat(4, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.calc-mini-field {
    display: grid;
    grid-template-columns: 128px minmax(0, 1fr);
    border: 1px solid var(--calc-border);
    background: var(--calc-surface);
    border-radius: var(--calc-radius-sm);
    overflow: hidden;
    min-width: 0;
    box-shadow: var(--calc-shadow);
}

.calc-mini-field label {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px 14px;
    font-weight: 600;
    font-size: 13px;
    letter-spacing: 0.02em;
    color: var(--calc-text-muted);
    border-right: 1px solid var(--calc-border);
    background: var(--calc-surface-muted);
    text-transform: uppercase;
    text-align: center;
}

.calc-mini-field input {
    width: 100%;
    min-width: 0;
    border: 0;
    outline: none;
    padding: 14px 16px;
    background: var(--calc-surface);
    font-size: 16px;
    font-weight: 500;
    color: var(--calc-text);
    text-align: left;
}

.calc-mini-field input::placeholder,
.calc-busca-input::placeholder,
.calc-m2-input::placeholder {
    color: #98a2b3;
}

.calc-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 24px;
    align-items: center;
}

#calc-rows {
    display: grid;
    gap: 56px;
}

.calc-row {
    padding: 18px;
    border: 1px solid var(--calc-border);
    border-radius: 16px;
    background: var(--calc-surface-soft);
    box-shadow: var(--calc-shadow-soft);
    position: relative;
}

.calc-row + .calc-row::before {
    content: '';
    position: absolute;
    top: -29px;
    left: 18px;
    right: 18px;
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, rgba(36, 93, 122, 0.34) 10%, rgba(36, 93, 122, 0.52) 50%, rgba(36, 93, 122, 0.34) 90%, transparent 100%);
}

.calc-row-top {
    display: grid;
    grid-template-columns: minmax(280px, 3fr) 120px 140px 140px 180px 180px 140px;
    gap: 16px;
    align-items: stretch;
}

.calc-row-bottom {
    display: grid;
    grid-template-columns: minmax(280px, 3fr) 140px 140px;
    gap: 16px;
    margin-top: 16px;
}

.calc-box {
    border: 1px solid var(--calc-border);
    background: var(--calc-surface);
    border-radius: var(--calc-radius);
    min-width: 0;
    box-shadow: var(--calc-shadow);
}

.calc-box-title {
    padding: 12px 14px;
    font-weight: 600;
    font-size: 13px;
    line-height: 1.3;
    text-align: center;
    border-bottom: 1px solid var(--calc-border);
    background: var(--calc-surface-muted);
    color: var(--calc-text-muted);
    letter-spacing: 0.01em;
}

.calc-box-content {
    min-height: 60px;
    padding: 14px 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--calc-text);
    background: var(--calc-surface);
}

.calc-box-produto .calc-box-content,
.calc-box-observacoes .calc-box-content {
    justify-content: stretch;
    text-align: left;
}

.calc-busca-field {
    position: relative;
    width: 100%;
}

.calc-busca-input,
.calc-m2-input {
    width: 100%;
    min-height: 60px;
    padding: 14px 16px;
    border: 0;
    outline: none;
    font-size: 16px;
    font-weight: 500;
    color: var(--calc-text);
    background: var(--calc-input-bg);
    text-align: left;
}

.calc-m2-input {
    text-align: center;
}

.calc-busca-input:focus,
.calc-m2-input:focus,
.calc-mini-field input:focus {
    background: #ffffff;
    box-shadow: inset 0 0 0 1px rgba(36, 93, 122, 0.22);
}

.calc-busca-sugestoes {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    width: 100%;
    border: 1px solid var(--calc-border);
    border-radius: 10px;
    background: #fff;
    z-index: 20;
    max-height: 260px;
    overflow-y: auto;
    box-shadow: 0 12px 28px rgba(15, 23, 42, 0.10);
}

.calc-busca-sugestoes.is-visible {
    display: block;
}

.calc-sugestao-item {
    display: block;
    width: 100%;
    padding: 12px 14px;
    border: 0;
    border-bottom: 1px solid #eef2f6;
    background: #fff;
    text-align: left;
    cursor: pointer;
    font-size: 14px;
    color: var(--calc-text);
    transition: background-color 0.18s ease;
}

.calc-sugestao-item:last-child {
    border-bottom: 0;
}

.calc-sugestao-item:hover {
    background: #f8fafc;
}

.calc-sugestao-empty {
    padding: 12px 14px;
    font-size: 14px;
    color: var(--calc-text-muted);
}

.calc-row-actions {
    display: grid;
    grid-template-rows: 1fr 1fr;
    gap: 10px;
}

.calc-btn {
    border: 1px solid transparent;
    background: var(--calc-primary);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.2;
    cursor: pointer;
    min-height: 52px;
    padding: 12px 16px;
    border-radius: 10px;
    transition: background-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
    box-shadow: 0 1px 2px rgba(16, 24, 40, 0.06);
}

.calc-btn:hover {
    background: var(--calc-primary-hover);
}

.calc-btn:active {
    transform: translateY(1px);
}

.calc-btn-sec {
    background: var(--calc-secondary);
}

.calc-btn-sec:hover {
    background: var(--calc-secondary-hover);
}

.calc-btn-danger {
    background: var(--calc-danger);
}

.calc-btn-danger:hover {
    background: var(--calc-danger-hover);
}

.calc-btn-report {
    background: var(--calc-success);
}

.calc-btn-report:hover {
    background: var(--calc-success-hover);
}

.calc-pecas-total,
.calc-peso-total {
    background: var(--calc-highlight-soft);
}

.calc-pecas-total-quebra,
.calc-peso-total-quebra {
    background: var(--calc-info-soft);
}

.calc-observacoes {
    justify-content: flex-start;
    background: var(--calc-observation-bg);
    color: var(--calc-text);
}

.calc-pecas-m2,
.calc-peso-m2,
.calc-pecas-total,
.calc-peso-total,
.calc-pecas-total-quebra,
.calc-peso-total-quebra {
    font-size: clamp(1.25rem, 1rem + 0.8vw, 1.8rem);
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.calc-pecas-m2,
.calc-peso-m2 {
    color: var(--calc-text);
    background: var(--calc-surface);
}

.calc-observacoes,
.calc-pecas-m2,
.calc-peso-m2,
.calc-pecas-total,
.calc-peso-total,
.calc-pecas-total-quebra,
.calc-peso-total-quebra {
    word-break: break-word;
}

.calc-report {
    margin-top: 24px;
    padding: 18px;
    border: 1px solid var(--calc-border);
    border-radius: 16px;
    background: var(--calc-surface);
    box-shadow: var(--calc-shadow-soft);
}

.calc-report-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.calc-report-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--calc-text);
}

.calc-btn-copy {
    min-height: 44px;
}

.calc-report-output {
    width: 100%;
    min-height: 240px;
    border: 1px solid var(--calc-border);
    border-radius: 12px;
    padding: 16px;
    resize: vertical;
    background: #fbfcfe;
    color: var(--calc-text);
    font: inherit;
    line-height: 1.6;
}

@media (max-width: 1480px) {
    .calc-row-top {
        grid-template-columns: minmax(260px, 2.6fr) 110px 1fr 1fr 1.1fr 1.1fr 130px;
    }

    .calc-row-bottom {
        grid-template-columns: minmax(260px, 2.6fr) 1fr 1fr;
    }
}

@media (max-width: 1200px) {
    .calc-header-fields {
        grid-template-columns: repeat(2, minmax(240px, 1fr));
    }

    .calc-row {
        padding: 16px;
    }

    .calc-row-top {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .calc-row-bottom {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .calc-box-produto,
    .calc-box-observacoes,
    .calc-row-bottom .calc-box:first-child {
        grid-column: 1 / -1;
    }

    .calc-row-actions {
        grid-column: 1 / -1;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        grid-template-rows: auto;
    }
}

@media (max-width: 768px) {
    .calc-header-fields {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .calc-mini-field {
        grid-template-columns: 1fr;
    }

    .calc-mini-field label {
        justify-content: flex-start;
        border-right: 0;
        border-bottom: 1px solid var(--calc-border);
        padding: 10px 14px;
    }

    .calc-mini-field input {
        padding: 13px 14px;
        font-size: 15px;
        text-align: left;
    }

    .calc-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .calc-toolbar .calc-btn {
        width: 100%;
    }

    .calc-row {
        padding: 14px;
        border-radius: 14px;
    }

    .calc-row + .calc-row::before {
        top: -29px;
        left: 14px;
        right: 14px;
    }

    .calc-row-top,
    .calc-row-bottom {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .calc-row-bottom {
        margin-top: 12px;
    }

    .calc-row-actions {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .calc-report-header {
        flex-direction: column;
        align-items: stretch;
    }

    .calc-box-title {
        padding: 10px 12px;
        font-size: 12px;
    }

    .calc-box-content {
        min-height: 54px;
        padding: 12px 14px;
    }

    .calc-busca-input,
    .calc-m2-input {
        min-height: 54px;
        padding: 12px 14px;
        font-size: 15px;
    }

    .calc-btn {
        min-height: 48px;
        font-size: 14px;
        padding: 11px 14px;
    }
}

@media (max-width: 480px) {
    .calc-app {
        --calc-radius: 10px;
        --calc-radius-sm: 8px;
    }

    .calc-row {
        padding: 12px;
    }

    .calc-row + .calc-row::before {
        top: -29px;
        left: 10px;
        right: 10px;
    }

    .calc-pecas-m2,
    .calc-peso-m2,
    .calc-pecas-total,
    .calc-peso-total,
    .calc-pecas-total-quebra,
    .calc-peso-total-quebra {
        font-size: 1.2rem;
    }
}