:root {
    --bg-deep: #0B0F1A;
    --bg-card: #141A2A;
    --primary: #2979FF;
    --primary-light: #5393FF;
    --accent: #8a2be2;
    --text-main: #ffffff;
    --text-muted: #A0A0A0;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    --border-radius: 12px;
    --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

body {
    background: var(--bg-deep);
    color: var(--text-main);
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 5%;
    background: rgba(11, 15, 26, 0.95);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.header-center {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    max-width: 500px;
}

#search {
    width: 100%;
    padding: 10px 20px;
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: var(--bg-card);
    color: white;
    outline: none;
}

.nav-categories {
    display: flex;
    gap: 20px;
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--primary-light);
}

.nav-link.active {
    color: var(--primary-light);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.banner {
    padding: 60px 5%;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0B0F1A 0%, #1e3a8a 100%);
    position: relative;
    text-align: center;
}

.banner-content {
    z-index: 2;
    width: 100%;
}

.banner-content h1 {
    font-size: 2.8rem;
    margin-bottom: 10px;
}

.bannerimg {
    width: 100%;
    max-width: 750px;
    height: auto;
    margin-top: 25px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    object-fit: cover;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.product-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    padding: 50px 5%;
}

.product {
    background: var(--bg-card);
    padding: 30px;
    border-radius: var(--border-radius);
    transition: var(--transition);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.product:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
}

.product img {
    width: 100%;
    height: 200px;
    object-fit: contain;
    margin-bottom: 20px;
}

.price {
    font-size: 1.5rem;
    color: var(--primary-light);
    margin: 15px 0;
    font-weight: bold;
}

.nav-btn {
    padding: 12px 25px;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    display: inline-block;
}

.nav-btn.primary {
    background: var(--primary);
    color: white;
}

.nav-btn.primary:hover {
    background: var(--primary-light);
}

.cart-btn {
    cursor: pointer;
    font-size: 1.2rem;
    background: var(--bg-card);
    padding: 10px 15px;
    border-radius: 10px;
    text-decoration: none;
}

.logo img {
    height: 45px;
    width: auto;
    display: block;
}

.catalog-page {
    min-height: 100vh;
}

.catalog-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 520px);
    align-items: center;
    gap: 40px;
    padding: 70px 5% 45px;
    background: linear-gradient(135deg, #0B0F1A 0%, #162E60 55%, #111827 100%);
}

.catalog-hero h1 {
    max-width: 720px;
    font-size: clamp(2rem, 5vw, 4rem);
    line-height: 1.1;
    margin: 10px 0 18px;
}

.catalog-hero p {
    max-width: 620px;
    color: var(--text-muted);
    font-size: 1.05rem;
}

.catalog-hero img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.eyebrow {
    color: var(--primary-light);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0;
    font-size: 0.8rem;
}

.catalog-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    padding: 28px 5% 0;
}

.filter-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.filter-btn {
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: var(--bg-card);
    color: var(--text-main);
    padding: 10px 16px;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary);
    border-color: var(--primary);
}

#products-feedback {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.catalog-products {
    padding-top: 18px;
}

.catalog-grid {
    padding-top: 24px;
}

.product-tag {
    display: inline-block;
    margin-top: 10px;
    padding: 5px 10px;
    border-radius: 50px;
    background: rgba(41, 121, 255, 0.14);
    color: var(--primary-light);
    font-size: 0.8rem;
    font-weight: 700;
}

.empty-products {
    grid-column: 1 / -1;
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--border-radius);
    padding: 34px;
    text-align: center;
}

.empty-products p {
    color: var(--text-muted);
    margin-top: 8px;
}

.titulo-sessao {
    padding: 0 5%;
}

.auth-page {
    min-height: calc(100vh - 76px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 48px 5%;
    background: linear-gradient(135deg, #0B0F1A 0%, #162E60 55%, #111827 100%);
}

.auth-panel {
    width: min(1040px, 100%);
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 430px);
    gap: 44px;
    align-items: center;
}

.auth-copy h1 {
    font-size: clamp(2rem, 5vw, 3.8rem);
    line-height: 1.08;
    margin: 10px 0 18px;
}

.auth-copy p {
    color: var(--text-muted);
    max-width: 560px;
    font-size: 1.05rem;
}

.auth-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 32px;
}

.auth-form h2,
.success-state h2 {
    margin-bottom: 22px;
    text-align: center;
}

.form-field {
    display: grid;
    gap: 8px;
    margin-bottom: 18px;
}

.form-field label {
    color: var(--text-main);
    font-size: 0.92rem;
    font-weight: 600;
}

.form-field input {
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 10px;
    background: #0F1524;
    color: var(--text-main);
    font: inherit;
    padding: 13px 14px;
    outline: none;
    transition: var(--transition);
}

.form-field input:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(83, 147, 255, 0.18);
}

.form-feedback {
    min-height: 22px;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: 4px 0 16px;
}

.form-feedback.error {
    color: #ff8a8a;
}

.auth-submit {
    width: 100%;
    text-align: center;
}

.auth-submit:disabled {
    cursor: not-allowed;
    opacity: 0.65;
}

.success-state {
    display: none;
    text-align: center;
}

.success-icon {
    width: 64px;
    height: 64px;
    display: grid;
    place-items: center;
    margin: 0 auto 16px;
    border-radius: 50%;
    background: rgba(76, 175, 80, 0.18);
    color: #61d46f;
    font-size: 2rem;
    font-weight: 700;
}

.success-state p {
    color: var(--text-muted);
    margin-bottom: 20px;
}

@media (max-width: 820px) {
    header,
    .catalog-toolbar {
        flex-direction: column;
    }

    .header-center {
        width: 100%;
    }

    .catalog-hero {
        grid-template-columns: 1fr;
        padding-top: 44px;
    }

    .auth-panel {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .auth-card {
        padding: 24px;
    }
}