/* ==========================================================================
   TEMA & VARIÁVEIS (AZUL / ESCURO / CLARO - STRICT MOBILE FIRST NO-CUTOFF)
   ========================================================================== */

:root[data-theme="dark"] {
    --primary: #0284c7;
    --primary-dark: #0369a1;
    --accent: #38bdf8;
    --bg-color: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.9);
    --border-color: rgba(56, 189, 248, 0.25);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glow: rgba(56, 189, 248, 0.15);
    --input-bg: #1e293b;
    --nav-bg: #0f172a;
    --danger: #ef4444;
}

:root[data-theme="light"] {
    --primary: #0284c7;
    --primary-dark: #0369a1;
    --accent: #0284c7;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --border-color: #cbd5e1;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --glow: rgba(2, 132, 199, 0.1);
    --input-bg: #ffffff;
    --nav-bg: #ffffff;
    --danger: #ef4444;
}

*, *::before, *::after { 
    margin: 0;
    padding: 0;
    box-sizing: border-box !important; 
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
}

html, body {
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden !important;
}

body { 
    background-color: var(--bg-color); 
    color: var(--text-main); 
    min-height: 100vh;
    padding-bottom: 80px; 
    position: relative;
}

.bg-glow-1, .bg-glow-2 {
    pointer-events: none;
}

.bg-glow-1 {
    position: absolute;
    top: -100px;
    left: -100px;
    width: 250px;
    height: 250px;
    background: rgba(2, 132, 199, 0.2);
    filter: blur(100px);
    border-radius: 50%;
    z-index: -1;
}

.bg-glow-2 {
    position: absolute;
    top: 40%;
    right: -100px;
    width: 250px;
    height: 250px;
    background: rgba(56, 189, 248, 0.12);
    filter: blur(120px);
    border-radius: 50%;
    z-index: -1;
}

.container { 
    padding: 12px; 
    width: 100%;
    max-width: 480px; 
    margin: 0 auto; 
}

.tab-content { 
    display: none; 
    width: 100%;
}

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

h2 { 
    margin-bottom: 12px; 
    color: var(--accent); 
    font-size: 1.25rem; 
}

/* Navegação Inferior */
nav {
    position: fixed; 
    bottom: 0; 
    left: 0; 
    width: 100vw; 
    background: var(--nav-bg);
    display: flex; 
    justify-content: space-around; 
    border-top: 1px solid var(--border-color); 
    padding: 10px 0; 
    z-index: 100;
}

nav button {
    background: none; 
    border: none; 
    font-size: 0.85rem; 
    color: var(--text-muted);
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    cursor: pointer;
}

nav button.active { 
    color: var(--accent); 
    font-weight: bold; 
}

/* Botão Fixo de Configurações */
.btn-settings-fixed {
    position: fixed;
    top: 10px;
    right: 10px;
    width: 36px;
    height: 36px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    font-size: 1.1rem;
    cursor: pointer;
    z-index: 101;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
}

/* Modais */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 200;
}

.modal-card {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 16px;
    width: 90%;
    max-width: 400px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

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

.btn-close {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    color: var(--text-main);
}

.theme-options {
    display: flex;
    gap: 8px;
}

.theme-btn {
    flex: 1;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--card-bg);
    color: var(--text-main);
    cursor: pointer;
    font-weight: 600;
}

.theme-btn.active {
    border-color: var(--accent);
    background: var(--primary);
    color: white;
}

/* Filtro de Períodos do Extrato */
.period-filters {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    padding-bottom: 6px;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
}

.period-filters::-webkit-scrollbar {
    display: none;
}

.period-btn {
    background: var(--card-bg);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 5px 10px;
    border-radius: 16px;
    font-size: 0.75rem;
    cursor: pointer;
    flex-shrink: 0;
}

.period-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Caixa de Comprovante */
.receipt-box {
    background: var(--input-bg);
    border: 1px dashed var(--border-color);
    border-radius: 10px;
    padding: 14px;
    font-family: 'Courier New', Courier, monospace;
}

/* Filtro Horizontal */
.category-filter {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    padding-bottom: 6px;
    margin-bottom: 12px;
    white-space: nowrap;
    width: 100%;
    -webkit-overflow-scrolling: touch;
}

.category-filter::-webkit-scrollbar {
    display: none;
}

.cat-btn {
    background: var(--card-bg);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    flex-shrink: 0;
}

.cat-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Cards & Formulários */
.card { 
    background: var(--card-bg); 
    border: 1px solid var(--border-color);
    padding: 12px; 
    border-radius: 12px; 
    margin-bottom: 12px; 
    width: 100%;
}

.product-grid { 
    display: grid; 
    grid-template-columns: repeat(2, 1fr); 
    gap: 8px; 
    width: 100%;
}

.product-card { 
    background: var(--card-bg); 
    border: 1px solid var(--border-color); 
    padding: 10px 6px; 
    border-radius: 8px; 
    text-align: center; 
    cursor: pointer; 
    transition: 0.15s; 
    width: 100%;
}

.product-card:active { 
    transform: scale(0.96); 
}

.product-card h4 { 
    font-size: 0.85rem; 
    margin-bottom: 4px; 
    color: var(--text-main);
    word-break: break-word;
}

.product-card span { 
    color: var(--accent); 
    font-weight: bold; 
    font-size: 0.9rem;
}

/* Carrinho */
.cart-list { 
    margin-top: 10px; 
    max-height: 180px; 
    overflow-y: auto; 
    border-top: 1px solid var(--border-color); 
    border-bottom: 1px solid var(--border-color); 
    padding: 8px 0; 
}

.cart-item { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    margin-bottom: 8px; 
    font-size: 0.85rem; 
}

input, select { 
    width: 100%; 
    padding: 10px; 
    margin-bottom: 10px; 
    border: 1px solid var(--border-color); 
    border-radius: 8px; 
    font-size: 0.9rem; 
    background: var(--input-bg);
    color: var(--text-main);
    display: block;
}

.btn { 
    background: var(--primary); 
    color: white; 
    border: none; 
    padding: 12px; 
    width: 100%; 
    border-radius: 8px; 
    font-size: 0.95rem; 
    font-weight: bold; 
    cursor: pointer; 
    text-align: center; 
}

.btn:active { 
    background: var(--primary-dark); 
}

.btn-secondary { 
    background: var(--text-muted); 
    margin-top: 6px; 
}

.total-box { 
    font-size: 1.1rem; 
    font-weight: bold; 
    display: flex; 
    justify-content: space-between; 
    margin: 10px 0; 
}

.split-payment { 
    background: var(--card-bg); 
    padding: 10px; 
    border: 1px solid var(--border-color);
    border-radius: 8px; 
    margin-bottom: 10px; 
    display: none; 
}

.unit-type-box, .extra-ingredients-box { 
    background: rgba(56, 189, 248, 0.05); 
    padding: 10px; 
    border: 1px solid var(--border-color); 
    border-radius: 8px; 
    margin-bottom: 10px; 
    width: 100%;
}