/* ========================================
   Premoldaco - Calculadora de Laje
   ======================================== */

:root {
    --primary: #1a2744;
    --primary-mid: #2c4a7c;
    --primary-light: #3b6cb5;
    --accent: #f59e0b;
    --accent-hover: #d97706;
    --success: #059669;
    --success-bg: #ecfdf5;
    --info: #2563eb;
    --info-bg: #eff6ff;
    --bg: #f1f5f9;
    --card: #ffffff;
    --text: #1e293b;
    --text-mid: #475569;
    --text-light: #94a3b8;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.06);
    --shadow: 0 4px 12px rgba(0,0,0,.08);
    --shadow-lg: 0 12px 32px rgba(0,0,0,.12);
    --radius: 16px;
    --radius-sm: 10px;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container { max-width: 1120px; margin: 0 auto; padding: 0 20px; }

/* ── Header ── */
.header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-mid) 100%);
    padding: 14px 0;
    position: sticky; top: 0; z-index: 100;
    box-shadow: 0 2px 20px rgba(0,0,0,.25);
}
.logo { display: flex; align-items: center; gap: 12px; }
.logo-icon {
    width: 42px; height: 42px;
    background: rgba(255,255,255,.1);
    border-radius: 10px;
    display: grid; place-items: center; padding: 3px;
}
.logo-icon svg { width: 36px; height: 36px; }
.logo h1 { color: #fff; font-size: 1.45rem; font-weight: 900; letter-spacing: -.5px; line-height: 1.15; }
.logo-subtitle { color: rgba(255,255,255,.55); font-size: .75rem; font-weight: 500; }

/* ── Main ── */
.main { flex: 1; padding: 28px 0 48px; }

.intro { text-align: center; margin-bottom: 28px; }
.intro h2 { font-size: 1.55rem; font-weight: 800; color: var(--primary); letter-spacing: -.4px; }
.intro p { color: var(--text-mid); margin-top: 6px; max-width: 560px; margin-inline: auto; font-size: .95rem; }

/* ── Cards ── */
.card {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.card-header {
    display: flex; align-items: center; gap: 10px;
    padding: 18px 22px;
    border-bottom: 1px solid var(--border);
}
.card-header h3 { font-size: 1rem; font-weight: 700; color: var(--primary); }
.card-icon {
    width: 36px; height: 36px;
    background: var(--info-bg);
    color: var(--info);
    border-radius: 8px;
    display: grid; place-items: center;
}
.card-icon.icon-success { background: var(--success-bg); color: var(--success); }

/* ── Layout ── */
.calculator-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 22px;
    align-items: start;
}

/* ── Form ── */
.form-body { padding: 20px 22px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-group { display: flex; flex-direction: column; gap: 5px; }
.form-group label { font-size: .8rem; font-weight: 600; color: var(--text-mid); text-transform: uppercase; letter-spacing: .4px; }

.input-wrapper { position: relative; }
.input-wrapper input {
    width: 100%; padding: 12px 44px 12px 14px;
    border: 2px solid var(--border); border-radius: var(--radius-sm);
    font-size: 1.1rem; font-weight: 600; font-family: inherit;
    color: var(--text); background: #fff;
    transition: .2s ease;
    -moz-appearance: textfield;
}
.input-wrapper input::-webkit-outer-spin-button,
.input-wrapper input::-webkit-inner-spin-button { -webkit-appearance: none; }
.input-wrapper input:focus { outline: none; border-color: var(--primary-light); box-shadow: 0 0 0 3px rgba(59,108,181,.15); }
.input-suffix {
    position: absolute; right: 14px; top: 50%; transform: translateY(-50%);
    font-size: .85rem; font-weight: 700; color: var(--text-light);
}

.form-hint {
    display: block; margin-top: 10px;
    font-size: .75rem; color: var(--text-light);
    padding: 8px 12px; background: var(--bg); border-radius: 6px;
}

/* ── Form Sections (Tela / Malha) ── */
.form-section {
    margin-top: 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px;
    background: #fafbfd;
}
.form-section .form-group { margin-top: 10px; }
.form-section .form-hint { margin-top: 6px; padding: 6px 10px; }

.form-section.section-disabled {
    opacity: .55;
    background: var(--bg);
}
.form-section.section-disabled .section-content {
    display: none;
}

/* Toggle Section */
.toggle-section {
    display: flex; align-items: center; gap: 8px;
    cursor: pointer; font-size: .82rem; font-weight: 700;
    color: var(--primary); text-transform: uppercase; letter-spacing: .3px;
    user-select: none;
}
.toggle-section input[type="checkbox"] { display: none; }

.toggle-switch {
    width: 36px; height: 20px;
    background: #cbd5e1; border-radius: 10px;
    position: relative; transition: .2s ease;
    flex-shrink: 0;
}
.toggle-switch::after {
    content: '';
    position: absolute; top: 2px; left: 2px;
    width: 16px; height: 16px;
    background: #fff; border-radius: 50%;
    transition: .2s ease;
    box-shadow: 0 1px 3px rgba(0,0,0,.15);
}
.toggle-section input:checked ~ .toggle-switch {
    background: var(--success);
}
.toggle-section input:checked ~ .toggle-switch::after {
    left: 18px;
}

.optional-badge {
    font-size: .6rem; font-weight: 600;
    text-transform: uppercase; letter-spacing: .4px;
    padding: 2px 7px; border-radius: 8px;
    background: rgba(0,0,0,.06); color: var(--text-light);
    margin-left: auto;
}

.form-section-header {
    display: flex; align-items: center; gap: 8px;
    font-size: .82rem; font-weight: 700; color: var(--primary);
    text-transform: uppercase; letter-spacing: .3px;
}

.section-icon {
    width: 28px; height: 28px;
    border-radius: 6px;
    display: grid; place-items: center;
}
.section-icon-tela { background: #fef2f2; color: #dc2626; }
.section-icon-malha { background: #f0fdf4; color: #16a34a; }

.select-wrapper select {
    width: 100%; padding: 10px 14px;
    border: 2px solid var(--border); border-radius: var(--radius-sm);
    font-size: .88rem; font-weight: 500; font-family: inherit;
    color: var(--text); background: #fff;
    cursor: pointer; appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23718096' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    transition: .2s ease;
}
.select-wrapper select:focus { outline: none; border-color: var(--primary-light); box-shadow: 0 0 0 3px rgba(59,108,181,.15); }

.btn-calculate {
    width: 100%; margin-top: 18px; padding: 14px;
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    color: #fff; border: none; border-radius: var(--radius-sm);
    font-size: 1rem; font-weight: 700; font-family: inherit;
    cursor: pointer; letter-spacing: .2px;
    box-shadow: 0 4px 16px rgba(245,158,11,.35);
    transition: .2s ease;
}
.btn-calculate:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(245,158,11,.45); }

/* ── Multi-cômodos ── */
#rooms-container { display: flex; flex-direction: column; gap: 12px; margin-top: 12px; }
.room-row {
    background: #f8fafc; border: 1px solid #e2e8f0; border-radius: var(--radius-sm);
    padding: 12px; transition: .2s;
}
.room-row:hover { border-color: #cbd5e1; }
.room-row-header {
    display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px;
}
.room-number { font-weight: 700; font-size: .85rem; color: var(--primary); }
.room-remove {
    width: 26px; height: 26px; border-radius: 50%;
    background: #fee2e2; color: #dc2626; border: none; cursor: pointer;
    font-size: 1.1rem; font-weight: 700; line-height: 1;
    display: flex; align-items: center; justify-content: center;
    transition: .15s;
}
.room-remove:hover { background: #dc2626; color: #fff; transform: scale(1.05); }
.room-row-fields { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 10px; }
@media (max-width: 600px) {
    .room-row-fields { grid-template-columns: 1fr; }
}
.btn-add-room {
    margin-top: 10px; width: 100%; padding: 10px;
    background: #f1f5f9; color: var(--primary); border: 2px dashed #cbd5e1;
    border-radius: var(--radius-sm); font-weight: 600; font-family: inherit; font-size: .92rem;
    cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 6px;
    transition: .15s;
}
.btn-add-room:hover { background: #e2e8f0; border-color: var(--primary); }

/* Tabela por cômodo */
.rooms-table-wrapper { padding: 0 22px 8px; overflow-x: auto; }
.rooms-table { width: 100%; border-collapse: collapse; font-size: .85rem; }
.rooms-table th, .rooms-table td { padding: 8px 10px; text-align: left; border-bottom: 1px solid #e2e8f0; }
.rooms-table thead th { background: #f1f5f9; color: var(--primary); font-weight: 700; font-size: .78rem; text-transform: uppercase; letter-spacing: .3px; }
.rooms-table tfoot td { background: #ecfdf5; color: var(--primary); border-top: 2px solid var(--success); }
.rooms-table tbody tr:hover { background: #f8fafc; }

/* Botão download */
.btn-download {
    margin: 12px 22px 22px; padding: 13px 18px;
    background: linear-gradient(135deg, #0d9488, #0f766e);
    color: #fff; border: none; border-radius: var(--radius-sm);
    font-size: .95rem; font-weight: 700; font-family: inherit;
    cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 8px;
    box-shadow: 0 4px 14px rgba(13,148,136,.35);
    transition: .2s ease;
    width: calc(100% - 44px);
}
.btn-download:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(13,148,136,.45); }
.btn-download:active { transform: translateY(0); }
.btn-calculate:active { transform: translateY(0); }

/* ── Formula Box ── */
.formula-box {
    margin: 0; padding: 16px 22px;
    background: var(--bg); border-top: 1px solid var(--border);
}
.formula-box h4 { font-size: .75rem; text-transform: uppercase; letter-spacing: .5px; color: var(--text-light); margin-bottom: 8px; }
.formula-item { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; flex-wrap: wrap; }
.formula-label {
    font-size: .65rem; font-weight: 700; text-transform: uppercase; letter-spacing: .3px;
    color: #fff; padding: 2px 8px; border-radius: 4px;
    min-width: 52px; text-align: center;
}
.fl-trilho { background: #059669; }
.fl-isopor { background: #d97706; }
.fl-tijolo { background: #c97b4a; }
.fl-tela { background: #dc2626; }
.fl-malha { background: #16a34a; }

.formula-item code { font-size: .8rem; color: var(--text-mid); font-family: 'Inter', monospace; }
.formula-item code strong { color: var(--primary); font-size: .92rem; }

/* ── Results ── */
.card-result { border-top: 4px solid var(--success); animation: slideUp .45s ease; }
@keyframes slideUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }

.result-section-title {
    padding: 0 22px;
    font-size: .7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .6px;
    color: var(--text-light);
}

.result-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px; padding: 10px 22px 16px;
}
.result-cards:first-of-type { padding-top: 20px; }
.rc-full { grid-column: 1 / -1; }

.result-card {
    text-align: center; padding: 18px 10px 14px;
    border-radius: var(--radius-sm);
    display: flex; flex-direction: column; align-items: center;
    transition: transform .2s ease;
}
.result-card:hover { transform: translateY(-2px); }

.rc-area { background: linear-gradient(135deg, #f0f9ff, #dbeafe); }
.rc-trilho { background: linear-gradient(135deg, #f0fdf4, #bbf7d0); }
.rc-isopor { background: linear-gradient(135deg, #fffbeb, #fef3c7); }
.rc-tela { background: linear-gradient(135deg, #fef2f2, #fecaca); }
.rc-malha { background: linear-gradient(135deg, #f0fdf4, #d1fae5); }

.rc-value { font-size: 2.2rem; font-weight: 900; color: var(--primary); line-height: 1; }
.rc-unit { font-size: .75rem; font-weight: 600; color: var(--text-light); margin-top: 2px; }
.rc-label { font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .5px; color: var(--text-mid); margin-top: 6px; }
.rc-detail { font-size: .68rem; color: var(--text-light); margin-top: 2px; }
.rc-m2 {
    display: inline-block; margin-top: 6px;
    font-size: .82rem; font-weight: 800; color: var(--primary);
    background: rgba(255,255,255,.7); padding: 3px 10px; border-radius: 6px;
}

/* ── Comparativo Sem/Com margem ── */
.rc-compare {
    display: flex; align-items: stretch; gap: 0;
    margin-top: 12px; width: 100%;
    border-radius: 10px; overflow: hidden;
    border: 1px solid var(--border);
}
.rc-compare-col {
    flex: 1; padding: 14px 12px;
    display: flex; flex-direction: column; align-items: center;
    text-align: center;
}
.rc-compare-sem { background: #f8fafc; }
.rc-compare-com { background: #f0fdf4; }

.rc-compare-title {
    font-size: .65rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: .5px; margin-bottom: 6px;
}
.rc-compare-sem .rc-compare-title { color: var(--text-light); }
.rc-compare-com .rc-compare-title { color: var(--success); }

.rc-compare-value {
    font-size: 1.8rem; font-weight: 900; line-height: 1;
    color: var(--text);
}
.rc-compare-com .rc-compare-value { color: var(--primary); }

.rc-compare-unit {
    font-size: .7rem; font-weight: 600; color: var(--text-light); margin-top: 2px;
}

.rc-compare-m2 {
    margin-top: 6px; padding: 3px 10px;
    font-size: .78rem; font-weight: 700; border-radius: 6px;
}
.rc-compare-sem .rc-compare-m2 { background: #e2e8f0; color: var(--text-mid); }
.rc-compare-com .rc-compare-m2 { background: #bbf7d0; color: #166534; }

.rc-compare-rec {
    margin-top: 6px;
    font-size: .58rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: .4px; color: #fff;
    background: var(--success); padding: 2px 8px; border-radius: 8px;
}

/* ── Card simples (sem comparativo) ── */
.rc-single {
    margin-top: 12px; padding: 16px;
    background: #f0fdf4; border-radius: 10px;
    display: flex; flex-direction: column; align-items: center; gap: 2px;
}
.rc-single .rc-compare-value { color: var(--primary); }
.rc-single .rc-compare-m2 { background: #bbf7d0; color: #166534; }
.rc-single .rc-badge { margin-top: 6px; }

/* ── Complemento Malha POP ── */
.rc-complemento {
    margin-top: 8px; padding: 8px 10px;
    background: rgba(255,255,255,.8);
    border: 1px dashed #f59e0b;
    border-radius: 8px;
    display: flex; flex-direction: column; align-items: center; gap: 2px;
}
.rc-complemento-icon {
    width: 20px; height: 20px;
    background: #f59e0b; color: #fff;
    border-radius: 50%; display: grid; place-items: center;
    font-size: .75rem; font-weight: 900; line-height: 1;
    margin-bottom: 2px;
}
.rc-complemento span {
    font-size: .75rem; font-weight: 700; color: var(--primary);
}
.rc-complemento small {
    font-size: .65rem; color: var(--text-light); font-weight: 500;
}

.rc-compare-divider {
    display: flex; align-items: center; justify-content: center;
    width: 48px; min-width: 48px;
    background: linear-gradient(180deg, #f1f5f9, #e2e8f0);
    position: relative;
}
.rc-compare-arrow {
    font-size: .65rem; font-weight: 800;
    color: var(--primary-mid);
    background: #fff; padding: 4px 6px; border-radius: 6px;
    box-shadow: var(--shadow-sm);
    white-space: nowrap;
}
.rc-badge {
    display: inline-block; margin-top: 6px;
    font-size: .6rem; font-weight: 700; text-transform: uppercase; letter-spacing: .3px;
    padding: 2px 8px; border-radius: 10px;
    background: rgba(0,0,0,.06); color: var(--text-mid);
}

.result-detail { padding: 0 22px 16px; }
.result-detail table { width: 100%; border-collapse: collapse; background: var(--bg); border-radius: var(--radius-sm); overflow: hidden; }
.result-detail td { padding: 10px 14px; font-size: .84rem; }
.result-detail tr { border-bottom: 1px solid var(--border); }
.result-detail tr:last-child { border-bottom: none; }
.result-detail td:first-child { color: var(--text-mid); }
.result-detail td:last-child { text-align: right; }

.result-tip {
    display: flex; align-items: center; gap: 8px;
    margin: 0 22px 18px; padding: 10px 14px;
    background: var(--info-bg); border-radius: 8px;
    color: var(--info); font-size: .8rem;
}
.result-tip svg { flex-shrink: 0; }

/* ── Visualization ── */
.visualization-section { margin-top: 28px; }

.viz-tabs {
    display: flex; gap: 4px;
    background: var(--card); border-radius: 12px;
    padding: 4px; box-shadow: var(--shadow-sm);
    width: fit-content; margin-bottom: 14px;
}
.viz-tab {
    padding: 10px 28px; border: none; border-radius: 10px;
    font-size: .85rem; font-weight: 600; font-family: inherit;
    cursor: pointer; color: var(--text-mid); background: transparent;
    transition: .2s ease;
}
.viz-tab.active { background: var(--primary); color: #fff; box-shadow: var(--shadow-sm); }
.viz-tab:hover:not(.active) { background: var(--bg); }

.viz-panel.hidden { display: none; }

.card-viz { padding: 20px; }

.viz-legend {
    display: flex; gap: 20px; margin-bottom: 14px;
    padding: 10px 14px; background: var(--bg); border-radius: 8px;
    flex-wrap: wrap;
}
.legend-item { display: flex; align-items: center; gap: 6px; font-size: .8rem; font-weight: 500; color: var(--text-mid); }
.legend-color { width: 20px; height: 14px; border-radius: 3px; display: inline-block; }
.legend-color-grid {
    background: repeating-linear-gradient(
        0deg, transparent, transparent 2px, rgba(239,68,68,.5) 2px, rgba(239,68,68,.5) 3px
    ),
    repeating-linear-gradient(
        90deg, transparent, transparent 2px, rgba(239,68,68,.5) 2px, rgba(239,68,68,.5) 3px
    ) !important;
    border: 1px solid rgba(239,68,68,.4) !important;
}

canvas { display: block; width: 100%; border-radius: var(--radius-sm); border: 1px solid var(--border); background: #fafbfc; }

.canvas3d-wrapper { position: relative; }

.viz-dims {
    display: flex; justify-content: space-between;
    margin-top: 10px; font-size: .78rem; color: var(--text-light); font-weight: 500;
}

.viz-controls {
    display: flex; gap: 24px; margin-top: 14px;
    padding: 12px 14px; background: var(--bg); border-radius: 8px;
}
.viz-controls label {
    display: flex; align-items: center; gap: 8px;
    font-size: .8rem; font-weight: 500; color: var(--text-mid);
}
.viz-controls input[type="range"] {
    width: 140px; accent-color: var(--primary);
}

/* ── Info Card ── */
.card-info { margin-top: 24px; padding: 28px; }
.info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.info-step { text-align: center; }
.step-num {
    width: 40px; height: 40px; margin: 0 auto 10px;
    background: var(--primary); color: #fff;
    border-radius: 50%; display: grid; place-items: center;
    font-size: .95rem; font-weight: 800;
}
.info-step strong { font-size: .9rem; color: var(--text); }
.info-step p { font-size: .8rem; color: var(--text-light); margin-top: 4px; }

/* ── Footer ── */
.footer {
    background: var(--primary);
    padding: 18px 0; text-align: center;
}
.footer p { color: rgba(255,255,255,.65); font-size: .78rem; }
.footer-sub { margin-top: 3px; font-size: .7rem !important; color: rgba(255,255,255,.35) !important; }

/* ========================================
   Responsivo
   ======================================== */
@media (max-width: 768px) {
    .calculator-layout { grid-template-columns: 1fr; }
    .result-cards { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .rc-value { font-size: 1.6rem; }
    .info-grid { grid-template-columns: 1fr; gap: 16px; }
    .viz-controls { flex-direction: column; gap: 10px; }
    .viz-controls input[type="range"] { width: 100%; }
}

@media (max-width: 480px) {
    .container { padding: 0 14px; }
    .header { padding: 10px 0; }
    .logo h1 { font-size: 1.2rem; }
    .main { padding: 18px 0 32px; }
    .intro h2 { font-size: 1.2rem; }
    .intro p { font-size: .85rem; }
    .form-row { grid-template-columns: 1fr; }
    .result-cards { grid-template-columns: 1fr; }
    .rc-full { grid-column: 1; }
    .rc-compare-value { font-size: 1.4rem; }
    .rc-compare-divider { width: 38px; min-width: 38px; }
    .rc-compare-col { padding: 10px 8px; }
    .card-header { padding: 14px 16px; }
    .form-body { padding: 16px; }
    .form-section { padding: 10px; }
    .result-cards { padding: 10px 16px; }
    .result-section-title { padding: 0 16px; }
    .result-detail { padding: 0 16px 12px; }
    .result-tip { margin: 0 16px 14px; }
    .formula-box { padding: 14px 16px; }
    .card-viz { padding: 14px; }
    .viz-legend { flex-direction: column; gap: 6px; }
    .viz-tabs { width: 100%; }
    .viz-tab { flex: 1; text-align: center; padding: 10px 14px; }
}

@media print {
    .header, .footer, .card-form, .card-info, .viz-tabs, .viz-controls { display: none; }
    .calculator-layout { grid-template-columns: 1fr; }
    .card { box-shadow: none; border: 1px solid #ccc; }
    .viz-panel.hidden { display: block; }
}