/* ============================================================
   ATELIER DE CERÂMICA — Calculadora de Queima
   Folha de estilos principal
   ============================================================ */

:root {
    --clay-100: #fdf6ee;
    --clay-200: #f5e6d0;
    --clay-300: #e8c9a0;
    --clay-400: #d4956a;
    --clay-500: #b96b3a;
    --clay-600: #8c4a25;
    --clay-700: #6b3219;

    --ember-100: #fff3e8;
    --ember-400: #ff8c42;
    --ember-500: #e06b20;

    --smoke-50:  #fafaf9;
    --smoke-100: #f4f4f0;
    --smoke-200: #e8e6e0;
    --smoke-300: #d0cdc5;
    --smoke-600: #6b6860;
    --smoke-700: #4a4840;
    --smoke-900: #1e1c18;

    --biscoito:  #e8a24a;
    --esmalte:   #4a8fe8;
    --forno:     #e85a4a;
    --avulsa:    #5aaa6e;
    --config:    #9b6ec8;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.14);

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;

    --transition: 0.22s ease;
}

/* ---- RESET & BASE ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', sans-serif;
    background: var(--clay-100);
    color: var(--smoke-900);
    min-height: 100vh;
    line-height: 1.6;
}

/* ============================================================
   HEADER
   ============================================================ */
.header {
    background: linear-gradient(135deg, var(--clay-600) 0%, var(--clay-700) 100%);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: stretch;
    gap: 2rem;
    flex-wrap: wrap;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 0;
    flex-shrink: 0;
}

.logo-icon {
    width: 44px;
    height: 44px;
    background: rgba(255,255,255,0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--clay-200);
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.15rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.02em;
}

.logo-sub {
    font-size: 0.72rem;
    color: var(--clay-200);
    font-weight: 400;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.nav-tabs {
    display: flex;
    align-items: flex-end;
    gap: 2px;
    flex: 1;
    overflow-x: auto;
    scrollbar-width: none;
}

.nav-tabs::-webkit-scrollbar { display: none; }

.nav-tab {
    border: none;
    background: transparent;
    color: rgba(255,255,255,0.65);
    font-family: 'Inter', sans-serif;
    font-size: 0.82rem;
    font-weight: 500;
    padding: 0.75rem 1rem;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.nav-tab:hover {
    color: #fff;
    background: rgba(255,255,255,0.08);
}

.nav-tab.active {
    color: #fff;
    border-bottom-color: var(--clay-300);
    background: rgba(255,255,255,0.12);
}

/* ============================================================
   MAIN CONTAINER
   ============================================================ */
.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem 3rem;
}

/* ============================================================
   TAB SECTIONS
   ============================================================ */
.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   SECTION HERO
   ============================================================ */
.section-hero {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    padding: 1.5rem 2rem;
    border-radius: var(--radius-lg);
    margin-bottom: 1.75rem;
    position: relative;
    overflow: hidden;
}

.section-hero::before {
    content: '';
    position: absolute;
    right: -30px;
    top: -30px;
    width: 160px;
    height: 160px;
    border-radius: 50%;
    opacity: 0.12;
    background: currentColor;
}

.biscoito-hero {
    background: linear-gradient(135deg, #fff8ee 0%, #ffeec8 100%);
    border-left: 5px solid var(--biscoito);
    color: var(--biscoito);
}

.esmalte-hero {
    background: linear-gradient(135deg, #eef4ff 0%, #c8dcff 100%);
    border-left: 5px solid var(--esmalte);
    color: var(--esmalte);
}

.forno-hero {
    background: linear-gradient(135deg, #fff0ee 0%, #ffd4cc 100%);
    border-left: 5px solid var(--forno);
    color: var(--forno);
}

.avulsa-hero {
    background: linear-gradient(135deg, #efffef 0%, #c8f0d0 100%);
    border-left: 5px solid var(--avulsa);
    color: var(--avulsa);
}

.config-hero {
    background: linear-gradient(135deg, #f6eeff 0%, #e0ccff 100%);
    border-left: 5px solid var(--config);
    color: var(--config);
}

.hero-icon {
    font-size: 2.2rem;
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.6);
}

.hero-info {
    flex: 1;
}

.hero-info h2 {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--smoke-900);
    margin-bottom: 0.2rem;
}

.hero-info p {
    font-size: 0.9rem;
    color: var(--smoke-600);
}

.hero-badge {
    padding: 0.4rem 1rem;
    border-radius: 2rem;
    font-size: 0.82rem;
    font-weight: 700;
    white-space: nowrap;
    flex-shrink: 0;
}

.biscoito-badge { background: #ffedcf; color: #925a00; }
.esmalte-badge  { background: #dbeafe; color: #1d4ed8; }
.forno-badge    { background: #fee2e2; color: #c01c1c; }
.avulsa-badge   { background: #dcfce7; color: #15803d; }

/* ============================================================
   CARDS & GRID
   ============================================================ */
.calculator-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
    .calculator-grid { grid-template-columns: 1fr; }
}

.card {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 1.75rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--smoke-200);
}

.card-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--clay-600);
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--smoke-200);
}

.card-desc {
    font-size: 0.85rem;
    color: var(--smoke-600);
    margin-bottom: 1rem;
}

/* ============================================================
   FORM ELEMENTS
   ============================================================ */
.form-group {
    margin-bottom: 1.1rem;
}

.form-group label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--smoke-700);
    margin-bottom: 0.35rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.input-row {
    display: flex;
    align-items: center;
    gap: 0;
    border: 1.5px solid var(--smoke-300);
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: #fff;
    transition: border-color var(--transition);
}

.input-row:focus-within {
    border-color: var(--clay-500);
    box-shadow: 0 0 0 3px rgba(185,107,58,0.15);
}

.input-prefix, .input-unit {
    padding: 0.55rem 0.75rem;
    background: var(--smoke-100);
    color: var(--smoke-600);
    font-size: 0.85rem;
    font-weight: 600;
    flex-shrink: 0;
    border: none;
    border-right: 1.5px solid var(--smoke-300);
}

.input-unit {
    border-right: none;
    border-left: 1.5px solid var(--smoke-300);
}

.input-field {
    flex: 1;
    border: none;
    outline: none;
    padding: 0.55rem 0.75rem;
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    color: var(--smoke-900);
    background: transparent;
    width: 100%;
    min-width: 0;
}

.input-field:not(.input-row .input-field) {
    border: 1.5px solid var(--smoke-300);
    border-radius: var(--radius-sm);
    padding: 0.55rem 0.75rem;
    transition: border-color var(--transition);
}

.input-field:not(.input-row .input-field):focus {
    outline: none;
    border-color: var(--clay-500);
    box-shadow: 0 0 0 3px rgba(185,107,58,0.15);
}

.input-sm { max-width: 80px; font-size: 0.85rem; padding: 0.35rem 0.5rem; }

select.input-field {
    border: 1.5px solid var(--smoke-300);
    border-radius: var(--radius-sm);
    cursor: pointer;
}

select.input-field:focus {
    border-color: var(--clay-500);
    box-shadow: 0 0 0 3px rgba(185,107,58,0.15);
}

.hint {
    display: block;
    font-size: 0.75rem;
    color: var(--smoke-600);
    margin-top: 0.3rem;
    font-style: italic;
}

.divider {
    height: 1px;
    background: var(--smoke-200);
    margin: 1.25rem 0;
}

.subsection-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--smoke-700);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.info-alert {
    background: #fffbe8;
    border: 1px solid #f0d060;
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    font-size: 0.83rem;
    color: #7a6020;
    margin-bottom: 1.1rem;
    display: flex;
    gap: 0.5rem;
    align-items: flex-start;
    line-height: 1.5;
}

.info-alert i { margin-top: 1px; flex-shrink: 0; }

/* ============================================================
   RADIO GROUP
   ============================================================ */
.radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    color: var(--smoke-700);
}

.radio-label input[type="radio"] {
    accent-color: var(--clay-500);
    width: 16px;
    height: 16px;
}

/* ============================================================
   BOTÕES
   ============================================================ */
.btn-calc {
    width: 100%;
    padding: 0.85rem 1.5rem;
    background: linear-gradient(135deg, var(--clay-500), var(--clay-600));
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    letter-spacing: 0.02em;
    box-shadow: 0 4px 12px rgba(185,107,58,0.3);
    margin-top: 0.5rem;
}

.btn-calc:hover {
    background: linear-gradient(135deg, var(--clay-600), var(--clay-700));
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(185,107,58,0.4);
}

.btn-calc:active { transform: translateY(0); }

.btn-add {
    width: 100%;
    padding: 0.6rem 1rem;
    background: var(--smoke-100);
    color: var(--clay-600);
    border: 2px dashed var(--clay-300);
    border-radius: var(--radius-sm);
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    margin: 0.75rem 0;
}

.btn-add:hover {
    background: var(--clay-200);
    border-color: var(--clay-500);
    color: var(--clay-700);
}

.btn-secondary {
    padding: 0.75rem 1.5rem;
    background: #fff;
    color: var(--smoke-600);
    border: 2px solid var(--smoke-300);
    border-radius: var(--radius-sm);
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-secondary:hover {
    border-color: var(--clay-400);
    color: var(--clay-600);
    background: var(--clay-100);
}

.btn-remove {
    background: none;
    border: none;
    color: #cc4444;
    cursor: pointer;
    padding: 0.3rem;
    border-radius: 50%;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    transition: all var(--transition);
}

.btn-remove:hover { background: #fee2e2; }

/* ============================================================
   PEÇAS (ESMALTE / AVULSA)
   ============================================================ */
.peca-item {
    background: var(--smoke-50);
    border: 1px solid var(--smoke-200);
    border-radius: var(--radius-sm);
    padding: 1rem;
    margin-bottom: 0.75rem;
}

.peca-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.peca-num {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--clay-500);
    letter-spacing: 0.05em;
}

.peca-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
}

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

@media (max-width: 540px) {
    .peca-grid { grid-template-columns: 1fr 1fr; }
    .peca-grid-2 { grid-template-columns: 1fr 1fr; }
}

/* ============================================================
   RESULTADO
   ============================================================ */
.result-card {
    display: flex;
    flex-direction: column;
    min-height: 350px;
}

.result-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    gap: 1rem;
    color: var(--smoke-300);
    font-size: 0.9rem;
    text-align: center;
    padding: 2rem;
}

.result-placeholder i {
    font-size: 3rem;
    opacity: 0.4;
    animation: pulse 2.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50%       { opacity: 0.6; transform: scale(1.05); }
}

/* Resultado preenchido */
.result-body {
    display: flex;
    flex-direction: column;
    gap: 0;
    flex: 1;
}

.result-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--clay-600);
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--smoke-200);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.result-line {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.55rem 0;
    border-bottom: 1px dashed var(--smoke-200);
    font-size: 0.9rem;
}

.result-line:last-of-type { border-bottom: none; }

.result-line .label {
    color: var(--smoke-600);
    flex: 1;
}

.result-line .value {
    font-weight: 600;
    color: var(--smoke-900);
    text-align: right;
}

.result-line .value.neg { color: #c01c1c; }
.result-line .value.pos { color: #15803d; }

.result-subtotal {
    background: var(--smoke-50);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    margin: 0.75rem 0;
}

.result-subtotal .result-line {
    border-bottom: none;
    padding: 0.3rem 0;
}

.result-total-box {
    background: linear-gradient(135deg, var(--clay-500), var(--clay-600));
    border-radius: var(--radius-md);
    padding: 1.25rem 1.5rem;
    margin-top: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.result-total-box .total-label {
    color: rgba(255,255,255,0.85);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.result-total-box .total-value {
    font-family: 'Playfair Display', serif;
    font-size: 2rem;
    font-weight: 700;
    color: #fff;
    line-height: 1;
}

.result-total-box .total-sub {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.65);
    text-align: right;
}

.result-note {
    background: #fffbe8;
    border: 1px solid #f0d060;
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    font-size: 0.78rem;
    color: #7a6020;
    margin-top: 1rem;
    display: flex;
    gap: 0.5rem;
    align-items: flex-start;
    line-height: 1.5;
}

.result-note i { flex-shrink: 0; margin-top: 1px; }

/* Itens do resultado de peças */
.result-itens {
    background: var(--smoke-50);
    border-radius: var(--radius-sm);
    padding: 0.75rem;
    margin: 0.5rem 0;
    max-height: 180px;
    overflow-y: auto;
}

.result-item-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.82rem;
    padding: 0.3rem 0;
    border-bottom: 1px dotted var(--smoke-200);
}

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

/* ============================================================
   INFO BOX
   ============================================================ */
.info-box {
    background: #fff;
    border: 1px solid var(--smoke-200);
    border-radius: var(--radius-md);
    padding: 1.25rem 1.5rem;
    box-shadow: var(--shadow-sm);
}

.info-box h4 {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--clay-600);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.info-box ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.info-box ul li {
    font-size: 0.85rem;
    color: var(--smoke-600);
    padding-left: 1.2rem;
    position: relative;
}

.info-box ul li::before {
    content: '🔥';
    position: absolute;
    left: 0;
    font-size: 0.75rem;
}

/* ============================================================
   CONFIGURAÇÕES
   ============================================================ */
.config-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
    .config-grid { grid-template-columns: 1fr; }
}

.config-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}

.config-table th {
    background: var(--smoke-100);
    padding: 0.5rem 0.75rem;
    text-align: left;
    font-weight: 700;
    color: var(--smoke-600);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 2px solid var(--smoke-200);
}

.config-table td {
    padding: 0.6rem 0.75rem;
    border-bottom: 1px solid var(--smoke-200);
    vertical-align: middle;
}

.config-table tr:last-child td { border-bottom: none; }

.cat-badge {
    display: inline-block;
    padding: 0.25rem 0.65rem;
    border-radius: 2rem;
    font-size: 0.78rem;
    font-weight: 700;
}

.cat-badge.micro   { background: #f5f5f5; color: #555; }
.cat-badge.pequena { background: #dcfce7; color: #15803d; }
.cat-badge.media   { background: #dbeafe; color: #1d4ed8; }
.cat-badge.grande  { background: #fef9c3; color: #854d0e; }
.cat-badge.extra   { background: #fee2e2; color: #c01c1c; }

/* CATEGORIAS GRID (Aba Avulsa) */
.categorias-section { margin-bottom: 1rem; }

.categorias-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 0.6rem;
    margin-bottom: 0.5rem;
}

.cat-card {
    background: var(--smoke-50);
    border: 1px solid var(--smoke-200);
    border-radius: var(--radius-sm);
    padding: 0.75rem;
    text-align: center;
    cursor: default;
}

.cat-card .cat-name {
    font-size: 0.78rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
}

.cat-card .cat-prices {
    font-size: 0.72rem;
    color: var(--smoke-600);
    line-height: 1.6;
}

.config-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.toast {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: #dcfce7;
    color: #15803d;
    border: 1px solid #86efac;
    border-radius: var(--radius-sm);
    padding: 0.6rem 1rem;
    font-size: 0.88rem;
    font-weight: 600;
    margin-top: 1rem;
    animation: slideDown 0.3s ease;
}

.toast.hidden { display: none; }

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
    background: var(--clay-700);
    color: rgba(255,255,255,0.65);
    text-align: center;
    padding: 1.25rem;
    font-size: 0.8rem;
    margin-top: 2rem;
}

.footer strong { color: rgba(255,255,255,0.85); }
.footer i { color: var(--clay-300); }

/* ============================================================
   RESPONSIVIDADE
   ============================================================ */
@media (max-width: 900px) {
    .header-content { flex-direction: column; gap: 0; padding: 0; }
    .logo { padding: 0.75rem 1rem; }
    .nav-tabs { padding: 0 0.5rem; }
    .nav-tab { padding: 0.6rem 0.75rem; font-size: 0.8rem; }
}

@media (max-width: 600px) {
    .main-container { padding: 1rem 0.75rem 2rem; }
    .section-hero { padding: 1rem; flex-wrap: wrap; }
    .hero-badge { display: none; }
    .card { padding: 1.25rem; }
    .result-total-box .total-value { font-size: 1.6rem; }
    .config-table { font-size: 0.78rem; }
}

/* ============================================================
   PRINT / ORÇAMENTO
   ============================================================ */
@media print {
    .header, .nav-tabs, .btn-calc, .btn-add, .btn-secondary, .info-box,
    .footer, .form-card, .result-placeholder { display: none !important; }
    .result-card { box-shadow: none; border: 1px solid #ccc; }
    .calculator-grid { grid-template-columns: 1fr; }
}