/* ════════════════════════════════════════════════
   Kraft Product Dimension Calculator CSS - Executive Theme
   ════════════════════════════════════════════════ */

:root {
    --kraft-blue: #0D518C;
    --kraft-blue-light: rgba(13, 81, 140, 0.08);
    --kraft-blue-hover: #0a4273;
    --kraft-green: #6CB53F;
    --kraft-green-dark: #4A8B28;
    --kraft-green-light: rgba(108, 181, 63, 0.12);
    --kraft-slate: #0F172A;
    --kraft-muted: #64748B;
    --kraft-border: rgba(13, 81, 140, 0.14);
    --kraft-bg-card: #FFFFFF;
    --kraft-bg-alt: #F8FAFC;
    --kraft-shadow: 0 14px 40px rgba(15, 23, 42, 0.07);
    --kraft-shadow-hover: 0 20px 48px rgba(13, 81, 140, 0.15);
}

.calc-section {
    padding: 60px 0 100px;
    background: #F4F7FB;
    min-height: 100vh;
    position: relative;
}

/* Page Header */
.calc-header {
    margin-bottom: 40px;
    position: relative;
    z-index: 1;
}

.calc-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--kraft-green-light);
    border: 1.5px solid var(--kraft-green);
    color: var(--kraft-green-dark);
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 1.8px;
    text-transform: uppercase;
    padding: 6px 18px;
    border-radius: 50px;
    margin-bottom: 16px;
    box-shadow: 0 4px 15px rgba(108, 181, 63, 0.15);
}

.calc-title {
    font-size: clamp(2.2rem, 4vw, 3.4rem);
    font-weight: 900;
    letter-spacing: -0.025em;
    color: var(--kraft-slate);
    margin-bottom: 12px;
}

.calc-title span {
    background: linear-gradient(135deg, #0F172A 0%, var(--kraft-blue) 50%, var(--kraft-green) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.calc-subtitle {
    max-width: 650px;
    font-size: 1rem;
    line-height: 1.7;
    color: var(--kraft-muted);
}

/* Cards */
.calc-card {
    background: var(--kraft-bg-card);
    border: 1px solid var(--kraft-border);
    border-radius: 22px;
    padding: 28px;
    box-shadow: var(--kraft-shadow);
    transition: all 0.35s cubic-bezier(0.25, 1, 0.5, 1);
    height: 100%;
}

.calc-card:hover {
    border-color: rgba(13, 81, 140, 0.3);
    box-shadow: var(--kraft-shadow-hover);
}

/* Selection Section */
.selection-box {
    position: relative;
}

.selection-box label {
    display: block;
    color: var(--kraft-slate);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.custom-select {
    width: 100%;
    background: #FFFFFF;
    border: 1.5px solid rgba(13, 81, 140, 0.2);
    color: var(--kraft-slate);
    padding: 13px 18px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 12px;
    outline: none;
    transition: all 0.25s ease;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%230D518C' class='bi bi-chevron-down' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 18px center;
    background-size: 14px;
}

.custom-select:hover:not(:disabled) {
    border-color: var(--kraft-blue);
    box-shadow: 0 0 12px rgba(13, 81, 140, 0.12);
}

.custom-select:focus {
    border-color: var(--kraft-blue);
    box-shadow: 0 0 0 4px rgba(13, 81, 140, 0.15);
}

.custom-select:disabled {
    background-color: #F1F5F9;
    color: #94A3B8;
    cursor: not-allowed;
    border-color: #E2E8F0;
}

/* Reset Button */
.btn-reset {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 24px;
    background: rgba(244, 63, 94, 0.08);
    border: 1px solid rgba(244, 63, 94, 0.25);
    color: #e11d48;
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 0.02em;
    border-radius: 12px;
    transition: all 0.25s ease;
    cursor: pointer;
}

.btn-reset:hover {
    background: #e11d48;
    color: #fff;
    box-shadow: 0 8px 20px rgba(225, 29, 72, 0.25);
    transform: translateY(-2px);
}

/* Dynamic Configuration Inputs */
.input-row {
    margin-bottom: 20px;
}

.input-row label {
    display: block;
    color: #334155;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.results-banner {
    background: var(--kraft-green-light);
    border: 1.5px dashed var(--kraft-green);
    border-radius: 14px;
    padding: 12px 18px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--kraft-green-dark);
    margin-top: 15px;
    transition: all 0.3s ease;
}

/* Diagram Column Styling */
.diagram-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 280px;
    background: #F8FAFC;
    border-radius: 16px;
    padding: 20px;
    border: 1px solid var(--kraft-border);
    position: relative;
}

.diagram-image {
    max-width: 100%;
    max-height: 360px;
    object-fit: contain;
    filter: drop-shadow(0 10px 20px rgba(15, 23, 42, 0.08));
    transition: all 0.4s ease;
}

.grid-preview-container {
    background: #0F172A;
    border-radius: 16px;
    padding: 20px;
    margin-top: 15px;
    color: #FFF;
    display: none;
}

.grid-preview-title {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #38BDF8;
    margin-bottom: 15px;
}

.grid-system .row ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 8px;
}

.grid-system .row ul li {
    flex: 1;
    height: 30px;
    background: linear-gradient(135deg, var(--kraft-blue), #0284C7);
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.grid-system .row ul li.bgcolor333 {
    background: linear-gradient(135deg, #334155, #1E293B);
}

/* Right Output Live Parameters Box */
.parameter-box h4 {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--kraft-slate);
    margin-bottom: 20px;
    border-left: 4px solid var(--kraft-blue);
    padding-left: 12px;
}

.parameter-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.parameter-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 0;
    border-bottom: 1px solid var(--kraft-border);
}

.parameter-item:last-child {
    border-bottom: none;
}

.parameter-label {
    font-size: 0.88rem;
    color: var(--kraft-muted);
    font-weight: 500;
}

.parameter-value {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--kraft-blue);
}

.parameter-value.highlight {
    color: #D97706;
}

/* Button Show Table / Details */
.btn-table-view {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 24px;
    background: linear-gradient(135deg, var(--kraft-blue) 0%, #064073 100%);
    color: #FFFFFF;
    font-weight: 700;
    font-size: 0.95rem;
    border-radius: 14px;
    border: none;
    transition: all 0.3s ease;
    cursor: pointer;
    box-shadow: 0 8px 24px rgba(13, 81, 140, 0.25);
}

.btn-table-view:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(13, 81, 140, 0.35);
    color: #FFFFFF;
}

.btn-table-view:disabled {
    background: #CBD5E1;
    box-shadow: none;
    cursor: not-allowed;
}

/* ════════════════════════════════════════════════
   REDESIGNED DETAILED SPEC SHEET SECTION
   ════════════════════════════════════════════════ */

.details-section {
    display: none;
}

.spec-sheet-card {
    background: #FFFFFF;
    border: 1px solid rgba(13, 81, 140, 0.15);
    border-top: 5px solid var(--kraft-blue);
    border-radius: 24px;
    padding: 35px;
    box-shadow: 0 20px 50px rgba(15, 23, 42, 0.08);
}

/* Spec Sheet Header Bar */
.spec-sheet-header-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding-bottom: 24px;
    border-bottom: 2px dashed rgba(13, 81, 140, 0.12);
    margin-bottom: 30px;
}

.spec-sheet-title-group h3 {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--kraft-slate);
    margin: 0 0 6px 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.spec-sheet-title-group h3 i {
    color: var(--kraft-blue);
}

.spec-model-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--kraft-blue-light);
    color: var(--kraft-blue);
    font-size: 0.82rem;
    font-weight: 800;
    padding: 4px 14px;
    border-radius: 50px;
    border: 1px solid rgba(13, 81, 140, 0.2);
}

.spec-header-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.btn-spec-action {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 0.88rem;
    font-weight: 700;
    border-radius: 12px;
    border: 1.5px solid var(--kraft-blue);
    background: #FFFFFF;
    color: var(--kraft-blue);
    transition: all 0.25s ease;
    cursor: pointer;
}

.btn-spec-action:hover {
    background: var(--kraft-blue);
    color: #FFFFFF;
    box-shadow: 0 6px 20px rgba(13, 81, 140, 0.25);
    transform: translateY(-2px);
}

.btn-spec-action.primary {
    background: linear-gradient(135deg, var(--kraft-green) 0%, var(--kraft-green-dark) 100%);
    border-color: var(--kraft-green);
    color: #FFFFFF;
}

.btn-spec-action.primary:hover {
    box-shadow: 0 6px 20px rgba(108, 181, 63, 0.35);
    transform: translateY(-2px);
}

/* KPI Highlight Banner Cards */
.spec-kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
    margin-bottom: 35px;
}

.spec-kpi-card {
    background: linear-gradient(135deg, #F8FAFC 0%, #FFFFFF 100%);
    border: 1px solid rgba(13, 81, 140, 0.12);
    border-radius: 18px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.spec-kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--kraft-blue);
    border-radius: 4px 0 0 4px;
}

.spec-kpi-card.green::before {
    background: var(--kraft-green);
}

.spec-kpi-card.amber::before {
    background: #F59E0B;
}

.spec-kpi-card.purple::before {
    background: #8B5CF6;
}

.spec-kpi-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(15, 23, 42, 0.08);
    border-color: rgba(13, 81, 140, 0.25);
}

.spec-kpi-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: var(--kraft-blue-light);
    color: var(--kraft-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    flex-shrink: 0;
}

.spec-kpi-card.green .spec-kpi-icon {
    background: var(--kraft-green-light);
    color: var(--kraft-green-dark);
}

.spec-kpi-card.amber .spec-kpi-icon {
    background: rgba(245, 158, 11, 0.12);
    color: #D97706;
}

.spec-kpi-card.purple .spec-kpi-icon {
    background: rgba(139, 92, 246, 0.12);
    color: #7C3AED;
}

.spec-kpi-info {
    display: flex;
    flex-direction: column;
}

.spec-kpi-label {
    font-size: 0.76rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--kraft-muted);
    margin-bottom: 2px;
}

.spec-kpi-value {
    font-size: 1.3rem;
    font-weight: 900;
    color: var(--kraft-slate);
    line-height: 1.2;
}

.spec-kpi-unit {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--kraft-muted);
    margin-left: 2px;
}

/* Dual Specification Matrix Containers */
.spec-matrix-card {
    background: #FFFFFF;
    border: 1px solid rgba(13, 81, 140, 0.12);
    border-radius: 18px;
    overflow: hidden;
    height: 100%;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.04);
}

.spec-matrix-header {
    background: #F8FAFC;
    padding: 16px 24px;
    border-bottom: 1px solid rgba(13, 81, 140, 0.12);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.spec-matrix-header h5 {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--kraft-slate);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.spec-matrix-header h5 i {
    color: var(--kraft-blue);
}

.spec-matrix-badge {
    font-size: 0.72rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 3px 10px;
    border-radius: 50px;
    background: rgba(13, 81, 140, 0.08);
    color: var(--kraft-blue);
}

.spec-matrix-table {
    width: 100%;
    border-collapse: collapse;
    margin: 0;
}

.spec-matrix-table tr {
    border-bottom: 1px solid rgba(13, 81, 140, 0.08);
    transition: background 0.2s ease;
}

.spec-matrix-table tr:last-child {
    border-bottom: none;
}

.spec-matrix-table tr:hover {
    background: #F8FAFC;
}

.spec-matrix-table td {
    padding: 14px 24px;
    font-size: 0.9rem;
}

.spec-matrix-table td.param-name {
    color: #475569;
    font-weight: 600;
    width: 55%;
}

.spec-matrix-table td.param-val {
    color: var(--kraft-slate);
    font-weight: 800;
    text-align: right;
}

.spec-matrix-table td.param-val span.unit {
    color: var(--kraft-muted);
    font-weight: 600;
    font-size: 0.8rem;
    margin-left: 3px;
}

.spec-matrix-table td.param-val.highlight-blue {
    color: var(--kraft-blue);
}

.spec-matrix-table td.param-val.highlight-green {
    color: var(--kraft-green-dark);
}

.spec-matrix-table td.param-val.highlight-amber {
    color: #D97706;
}

/* Technical Advisory Notes Footer */
.spec-advisory-box {
    margin-top: 30px;
    background: rgba(13, 81, 140, 0.04);
    border: 1px solid rgba(13, 81, 140, 0.12);
    border-radius: 16px;
    padding: 20px 24px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.spec-advisory-icon {
    font-size: 1.4rem;
    color: var(--kraft-blue);
    line-height: 1;
    margin-top: 2px;
}

.spec-advisory-content h6 {
    font-size: 0.9rem;
    font-weight: 800;
    color: var(--kraft-slate);
    margin: 0 0 4px 0;
}

.spec-advisory-content p {
    font-size: 0.84rem;
    color: #64748B;
    margin: 0;
    line-height: 1.5;
}

/* ════════════════════════════════════════════════
   PRINT STYLESHEET OPTIMIZATION
   ════════════════════════════════════════════════ */

@media print {
    /* Hide non-printable UI chrome */
    .top-header-strip,
    .main-floating-navbar,
    .calc-header,
    .calc-card:not(.spec-sheet-card),
    .spec-header-actions,
    .btn-reset,
    footer,
    #whatsapp-floating-btn {
        display: none !important;
    }

    body {
        background: #FFFFFF !important;
        color: #000000 !important;
        font-size: 12pt;
    }

    .calc-section {
        padding: 0 !important;
        background: none !important;
    }

    .details-section {
        display: block !important;
        margin-top: 0 !important;
    }

    .spec-sheet-card {
        border: 2px solid #0D518C !important;
        box-shadow: none !important;
        padding: 20px !important;
        border-radius: 0 !important;
    }

    .spec-kpi-card {
        border: 1px solid #CCC !important;
        box-shadow: none !important;
    }
}

/* Responsive adjustments */
@media (max-width: 767.98px) {
    .calc-section { padding: 30px 0 50px !important; }
    .calc-badge { font-size: 0.72rem !important; padding: 4px 12px !important; letter-spacing: 1px !important; }
    .calc-title { font-size: 1.6rem !important; }
    .calc-subtitle { font-size: 0.88rem !important; line-height: 1.5 !important; }

    .calc-card, .spec-sheet-card {
        padding: 18px 16px !important;
        border-radius: 16px !important;
    }
    .selection-box label { font-size: 0.72rem !important; }
    .custom-select { font-size: 0.88rem !important; padding: 10px 14px !important; }
    .spec-matrix-table td { font-size: 0.82rem !important; padding: 8px 10px !important; }
    .spec-advisory-box { padding: 14px 16px !important; border-radius: 12px !important; }
    .spec-advisory-icon { font-size: 1.1rem !important; }
    .spec-advisory-content h6 { font-size: 0.84rem !important; }
    .spec-advisory-content p { font-size: 0.78rem !important; }

    .spec-sheet-header-bar {
        flex-direction: column;
        align-items: flex-start;
    }
    .spec-header-actions {
        width: 100%;
    }
    .btn-spec-action {
        flex: 1;
        justify-content: center;
    }
}