/* ==========================================================================
   PUSDATIN BGN SITUBONDO — KALKULATOR SPPG CSS
   Semua styles khusus untuk kalkulator-sppg.html
   ========================================================================== */

/* ─── TOAST NOTIFIKASI ───────────────────────────────────────────── */
.calc-toast {
    position: fixed;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%) translateY(80px);
    background: #1e293b;
    color: #fff;
    padding: 12px 28px;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    z-index: 9999;
    pointer-events: none;
    opacity: 0;
    transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
    white-space: nowrap;
    border: 1px solid rgba(255,255,255,0.1);
}
.calc-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}
.calc-toast.calc-toast-success { background: #16a34a; }
.calc-toast.calc-toast-error   { background: #dc2626; }
.calc-toast.calc-toast-info    { background: #2563eb; }

/* ─── KARTU UTAMA KALKULATOR ─────────────────────────────────────── */
.calc-main-card {
    background: rgba(15, 23, 42, 0.75);
    border: 1px solid rgba(255,255,255,0.09);
    border-radius: 24px;
    overflow: hidden;
    backdrop-filter: blur(20px);
    margin-bottom: 32px;
    box-shadow: 0 4px 48px rgba(0,0,0,0.35);
}

/* ── Header Kartu ── */
.calc-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    padding: 24px 32px;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.12) 0%, rgba(59, 130, 246, 0.07) 100%);
    border-bottom: 1px solid rgba(255,255,255,0.07);
}
.calc-card-title {
    display: flex;
    align-items: center;
    gap: 14px;
}
.calc-card-title > i {
    font-size: 1.9rem;
    color: #10b981;
    filter: drop-shadow(0 0 10px rgba(16,185,129,0.4));
    flex-shrink: 0;
}
.calc-card-title h2 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 700;
    color: #f1f5f9;
    line-height: 1.2;
}
.calc-card-title p {
    margin: 4px 0 0;
    font-size: 0.78rem;
    color: #64748b;
}
.calc-data-badges {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.data-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    background: rgba(16,185,129,0.12);
    border: 1px solid rgba(16,185,129,0.28);
    border-radius: 50px;
    font-size: 0.73rem;
    font-weight: 600;
    color: #34d399;
    white-space: nowrap;
}

/* ─── BLOK LANGKAH ───────────────────────────────────────────────── */
.calc-step-block {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 0;
    padding: 28px 32px;
    border-bottom: 1px solid rgba(255,255,255,0.055);
    transition: background 0.2s;
}
.calc-step-block:hover {
    background: rgba(255,255,255,0.018);
}
.calc-step-block:last-child {
    border-bottom: none;
}

/* Pemisah vertikal antara label dan konten */
.step-label {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 2px 24px 0 0;
    border-right: 1px solid rgba(255,255,255,0.06);
}
.step-number {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: linear-gradient(135deg, #1e40af, #3b82f6);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.88rem;
    font-weight: 800;
    color: #fff;
    flex-shrink: 0;
    box-shadow: 0 0 14px rgba(59,130,246,0.4);
}
.step-number-accent {
    background: linear-gradient(135deg, #065f46, #10b981);
    box-shadow: 0 0 14px rgba(16,185,129,0.5);
}
.step-label strong {
    display: block;
    font-size: 0.9rem;
    font-weight: 700;
    color: #e2e8f0;
    line-height: 1.3;
}
.step-label small {
    display: block;
    font-size: 0.72rem;
    color: #64748b;
    margin-top: 3px;
    line-height: 1.4;
}
.step-content {
    padding-left: 28px;
}

/* ─── FORM ELEMENTS ──────────────────────────────────────────────── */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    align-items: start;
}
.form-group {}
.form-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.73rem;
    font-weight: 700;
    color: #94a3b8;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.form-select {
    width: 100%;
    padding: 10px 36px 10px 13px;
    background: rgba(30, 41, 59, 0.85);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 10px;
    color: #e2e8f0;
    font-family: inherit;
    font-size: 0.88rem;
    font-weight: 500;
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 13px center;
}
.form-select:focus {
    outline: none;
    border-color: #10b981;
    box-shadow: 0 0 0 3px rgba(16,185,129,0.15);
}
.form-select-primary {
    border-color: rgba(59,130,246,0.35);
}
.form-select-primary:focus {
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59,130,246,0.15);
}

.calc-info-badge {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 11px 16px;
    background: rgba(16,185,129,0.09);
    border: 1px solid rgba(16,185,129,0.22);
    border-radius: 10px;
    font-size: 0.83rem;
    color: #34d399;
    font-weight: 500;
    line-height: 1.4;
    /* Sejajar dengan select: label (font-size 0.73rem = ~11px) + margin 8px + select height (~41px) = ~60px total. Badge punya label kosong jadi kita align dari atas */
    margin-top: 0;
}
.calc-info-badge i { font-size: 1rem; flex-shrink: 0; }

/* ─── PREVIEW SUMMARY GRID ───────────────────────────────────────── */
.preview-summary-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}
.preview-card {
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 14px;
    padding: 20px 14px 16px;
    text-align: center;
    transition: border-color 0.2s, transform 0.2s;
}
.preview-card:hover {
    border-color: rgba(255,255,255,0.15);
    transform: translateY(-2px);
}
.preview-card i {
    font-size: 1.35rem;
    color: #3b82f6;
    display: block;
    margin-bottom: 10px;
}
.preview-card-accent i { color: #10b981; }
.preview-card-accent {
    border-color: rgba(16,185,129,0.25);
    background: rgba(16,185,129,0.07);
}
.preview-val {
    font-size: 1.55rem;
    font-weight: 800;
    color: #f1f5f9;
    line-height: 1;
    font-family: 'Space Grotesk', sans-serif;
    transition: all 0.3s;
}
.preview-label {
    font-size: 0.68rem;
    color: #64748b;
    margin-top: 6px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    line-height: 1.35;
}

/* ─── ADVANCED OPTIONS ───────────────────────────────────────────── */
.advanced-block {
    border-top: 1px solid rgba(255,255,255,0.055);
    border-bottom: 1px solid rgba(255,255,255,0.055);
}
.btn-advanced {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 17px 32px;
    background: transparent;
    border: none;
    cursor: pointer;
    color: #94a3b8;
    font-family: inherit;
    font-size: 0.88rem;
    font-weight: 600;
    transition: background 0.2s, color 0.2s;
    text-align: left;
    gap: 12px;
}
.btn-advanced:hover,
.btn-advanced.active {
    background: rgba(255,255,255,0.025);
    color: #e2e8f0;
}
.adv-left {
    display: flex;
    align-items: center;
    gap: 10px;
}
.adv-left > i { font-size: 1.05rem; color: #f59e0b; flex-shrink: 0; }
.adv-desc {
    font-size: 0.73rem;
    color: #64748b;
    font-weight: 400;
}
.adv-chevron {
    font-size: 0.85rem;
    flex-shrink: 0;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.adv-chevron.rotated { transform: rotate(180deg); }

.advanced-panel {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.advanced-panel.open { max-height: 9999px; }

.adv-inner {
    padding: 4px 32px 32px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.adv-group {
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 14px;
    overflow: hidden;
}
.adv-group-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 13px 18px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    background: rgba(255,255,255,0.02);
    flex-wrap: wrap;
}
.adv-group-header i    { font-size: 0.95rem; color: #f59e0b; flex-shrink: 0; }
.adv-group-header h4   { margin: 0; font-size: 0.88rem; font-weight: 700; color: #e2e8f0; flex: 1; min-width: 120px; }
.adv-hint              { font-size: 0.7rem; color: #64748b; }

.adv-section {
    border-bottom: 1px solid rgba(255,255,255,0.04);
}
.adv-section:last-child { border-bottom: none; }
.adv-section-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.78rem;
    font-weight: 700;
    color: #94a3b8;
    margin: 0;
    padding: 12px 18px 0;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.adv-section-title i { font-size: 0.85rem; color: #3b82f6; }

/* Checkbox grids */
.checkbox-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    padding: 14px 18px;
}
/* Reset padding saat ada bahan-filter-header sebelumnya */
.bahan-filter-header + .checkbox-grid { padding: 12px 18px; }

.checkbox-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 11px;
    background: rgba(30,41,59,0.6);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.8rem;
    color: #cbd5e1;
    transition: all 0.18s;
    font-family: inherit;
    font-weight: 500;
    line-height: 1.3;
}
.checkbox-item:hover {
    background: rgba(59,130,246,0.1);
    border-color: rgba(59,130,246,0.3);
    color: #e2e8f0;
}
.checkbox-item input  { cursor: pointer; accent-color: #3b82f6; flex-shrink: 0; }
.checkbox-item small  { color: #475569; font-size: 0.68rem; }
.checkbox-all {
    background: rgba(59,130,246,0.08);
    border-color: rgba(59,130,246,0.25);
    color: #93c5fd;
}
.checkbox-all input { accent-color: #3b82f6; }
.checkbox-danger:hover {
    background: rgba(239,68,68,0.1);
    border-color: rgba(239,68,68,0.3);
    color: #fca5a5;
}
.checkbox-danger input { accent-color: #ef4444; }

.bahan-filter-header { padding: 12px 18px; border-bottom: 1px solid rgba(255,255,255,0.05); }

/* Badge kategori */
.badge-kategori {
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.62rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    background: rgba(100,116,139,0.2);
    color: #64748b;
    flex-shrink: 0;
}
.badge-kategori[data-kat="karbohidrat"]    { background: rgba(245,158,11,0.15);  color: #f59e0b; }
.badge-kategori[data-kat="protein-hewani"] { background: rgba(249,115,22,0.15);  color: #f97316; }
.badge-kategori[data-kat="protein-nabati"] { background: rgba(234,179,8,0.15);   color: #ca8a04; }
.badge-kategori[data-kat="sayuran"]        { background: rgba(34,197,94,0.15);   color: #22c55e; }
.badge-kategori[data-kat="buah"]           { background: rgba(168,85,247,0.15);  color: #a855f7; }
.badge-kategori[data-kat="susu"]           { background: rgba(99,102,241,0.15);  color: #818cf8; }

/* Override tables */
.override-table-wrap {
    padding: 12px 18px;
    overflow-x: auto;
}
.override-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.82rem;
    min-width: 420px;
}
.override-table th {
    padding: 8px 12px;
    background: rgba(15,23,42,0.8);
    color: #64748b;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-align: left;
    border-bottom: 1px solid rgba(255,255,255,0.07);
    white-space: nowrap;
}
.override-table td {
    padding: 7px 12px;
    color: #cbd5e1;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    vertical-align: middle;
}
.override-table tr:last-child td { border-bottom: none; }
.override-table tr:hover td { background: rgba(255,255,255,0.02); }
.override-input {
    width: 110px;
    padding: 5px 10px;
    background: rgba(30,41,59,0.9);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 6px;
    color: #e2e8f0;
    font-family: inherit;
    font-size: 0.85rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.override-input:focus {
    outline: none;
    border-color: #f59e0b;
    box-shadow: 0 0 0 3px rgba(245,158,11,0.15);
}
.override-input:disabled {
    opacity: 0.35;
    cursor: not-allowed;
    background: rgba(15,23,42,0.5);
    border-color: rgba(255,255,255,0.05);
}
.override-input::placeholder { color: #475569; }
.text-muted-cell { color: #475569; font-size: 0.85em; }

/* Reset & advanced footer */
.adv-footer {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    padding: 14px 18px;
    border-top: 1px solid rgba(255,255,255,0.04);
}
.btn-outline-danger {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 16px;
    border: 1.5px solid rgba(239,68,68,0.45);
    border-radius: 8px;
    color: #f87171;
    background: rgba(239,68,68,0.07);
    font-family: inherit;
    font-size: 0.83rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}
.btn-outline-danger:hover {
    background: rgba(239,68,68,0.14);
    border-color: rgba(239,68,68,0.65);
    color: #fca5a5;
}
.adv-reset-note {
    font-size: 0.73rem;
    color: #475569;
    margin: 0;
    line-height: 1.4;
}

/* ─── LANGKAH 3 — TOMBOL HITUNG ──────────────────────────────────── */
.calc-step-action {
    background: linear-gradient(135deg, rgba(16,185,129,0.06) 0%, rgba(59,130,246,0.04) 100%);
}
.step-action-content {
    display: flex;
    align-items: center;
}
.btn-hitung {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 13px 36px;
    background: linear-gradient(135deg, #10b981, #059669);
    border: none;
    border-radius: 12px;
    color: #fff;
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 0.98rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 0 4px 20px rgba(16,185,129,0.35);
    letter-spacing: 0.02em;
    white-space: nowrap;
}
.btn-hitung:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 30px rgba(16,185,129,0.5);
    background: linear-gradient(135deg, #34d399, #10b981);
}
.btn-hitung:active  { transform: translateY(0) scale(0.98); }
.btn-hitung.loading { opacity: 0.75; pointer-events: none; }
.btn-hitung i       { font-size: 1.05rem; }

/* ─── SEKSI HASIL ─────────────────────────────────────────────────── */
.result-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
    animation: fadeInUp 0.5s ease both;
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

.result-header {}
.result-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: #f1f5f9;
    margin: 0 0 14px;
    display: flex;
    align-items: center;
    gap: 9px;
}
.result-title i { color: #10b981; }

.result-summary-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}
.res-card {
    background: rgba(15,23,42,0.7);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px;
    padding: 20px 14px 16px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    transition: transform 0.2s;
}
.res-card:hover { transform: translateY(-3px); }
.res-card-icon  { font-size: 1.5rem; }
.res-card-val {
    font-size: 1.7rem;
    font-weight: 800;
    color: #f1f5f9;
    font-family: 'Space Grotesk', sans-serif;
    line-height: 1;
}
.res-card-label {
    font-size: 0.68rem;
    color: #64748b;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    line-height: 1.3;
}
.res-card-blue  { border-color: rgba(59,130,246,0.3);  background: rgba(59,130,246,0.07);  }
.res-card-blue  .res-card-icon { color: #60a5fa; }
.res-card-green { border-color: rgba(16,185,129,0.3);  background: rgba(16,185,129,0.07);  }
.res-card-green .res-card-icon { color: #34d399; }
.res-card-amber { border-color: rgba(245,158,11,0.3);  background: rgba(245,158,11,0.07);  }
.res-card-amber .res-card-icon { color: #fbbf24; }
.res-card-purple{ border-color: rgba(168,85,247,0.3);  background: rgba(168,85,247,0.07);  }
.res-card-purple .res-card-icon { color: #c084fc; }

/* ─── EKSPOR BAR ─────────────────────────────────────────────────── */
.export-bar {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    background: rgba(15,23,42,0.7);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 14px;
    padding: 14px 20px;
}
.export-label {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 0.82rem;
    font-weight: 700;
    color: #94a3b8;
    white-space: nowrap;
}
.export-btn-row { display: flex; gap: 10px; flex-wrap: wrap; }
.btn-export {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 18px;
    border: none;
    border-radius: 9px;
    font-family: inherit;
    font-size: 0.845rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}
.btn-export:disabled { opacity: 0.38; cursor: not-allowed; }
.btn-export-excel {
    background: linear-gradient(135deg, #16a34a, #15803d);
    color: #fff;
    box-shadow: 0 4px 14px rgba(22,163,74,0.28);
}
.btn-export-excel:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(22,163,74,0.42);
}
.btn-export-pdf {
    background: linear-gradient(135deg, #dc2626, #b91c1c);
    color: #fff;
    box-shadow: 0 4px 14px rgba(220,38,38,0.28);
}
.btn-export-pdf:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(220,38,38,0.42);
}
.export-bar-bottom { margin-top: 0; }

/* ─── TABEL HASIL ─────────────────────────────────────────────────── */
.result-table-wrap {
    background: rgba(15,23,42,0.7);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 18px;
    overflow: hidden;
}
.result-table-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 22px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    flex-wrap: wrap;
    gap: 10px;
}
.result-table-header h3 {
    margin: 0;
    font-size: 0.95rem;
    font-weight: 700;
    color: #e2e8f0;
    display: flex;
    align-items: center;
    gap: 8px;
}
.result-table-header h3 i { color: #3b82f6; }
.badge-legend    { display: flex; gap: 8px; align-items: center; }
.table-responsive { overflow-x: auto; }

.result-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.855rem;
    min-width: 640px;
}
.result-table th {
    padding: 10px 13px;
    background: rgba(15,23,42,0.95);
    color: #64748b;
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.055em;
    text-align: left;
    border-bottom: 1px solid rgba(255,255,255,0.07);
    white-space: nowrap;
}
.result-table td {
    padding: 10px 13px;
    color: #cbd5e1;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    vertical-align: middle;
}
.result-table tr:last-child td { border-bottom: none; }
.result-table tbody tr:hover td { background: rgba(255,255,255,0.025); }
.result-table tr.row-overridden td { background: rgba(245,158,11,0.045); }
.result-table tr.row-overridden:hover td { background: rgba(245,158,11,0.075); }
.result-table-sm th,
.result-table-sm td { padding: 8px 13px; }

.text-center { text-align: center !important; }
.text-right  { text-align: right !important; }
.text-muted-sm { font-size: 0.76rem; color: #475569; margin: 0; }

/* ─── BADGE SUMBER ─────────────────────────────────────────────────── */
.source-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 7px;
    border-radius: 5px;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    white-space: nowrap;
}
.badge-dataset {
    background: rgba(16,185,129,0.14);
    color: #34d399;
    border: 1px solid rgba(16,185,129,0.24);
}
.badge-override {
    background: rgba(245,158,11,0.14);
    color: #f59e0b;
    border: 1px solid rgba(245,158,11,0.28);
}

/* ─── RESPONSIVE ─────────────────────────────────────────────────── */
@media (max-width: 960px) {
    .calc-step-block {
        grid-template-columns: 1fr;
        padding: 20px 24px;
        gap: 14px;
    }
    .step-label {
        border-right: none;
        padding-right: 0;
        border-bottom: 1px solid rgba(255,255,255,0.06);
        padding-bottom: 12px;
    }
    .step-content { padding-left: 0; }
    .calc-card-header  { padding: 20px 24px; }
    .adv-inner         { padding: 4px 24px 24px; }
    .btn-advanced      { padding: 16px 24px; }
    .form-row          { grid-template-columns: 1fr; }
    .preview-summary-grid { grid-template-columns: repeat(2, 1fr); }
    .result-summary-grid  { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .calc-step-block   { padding: 18px 18px; }
    .calc-card-header  { padding: 18px 18px; }
    .adv-inner         { padding: 4px 18px 20px; }
    .btn-advanced      { padding: 15px 18px; }
    .preview-summary-grid { grid-template-columns: 1fr 1fr; }
    .result-summary-grid  { grid-template-columns: 1fr 1fr; }
    .res-card-val      { font-size: 1.4rem; }
    .export-bar        { flex-direction: column; align-items: flex-start; gap: 10px; }
    .adv-footer        { flex-direction: column; align-items: flex-start; }
    .adv-desc          { display: none; }
    .calc-data-badges  { display: none; }
    .form-row          { grid-template-columns: 1fr; }
}