:root {
    --primary: #2C3E50;
    --accent: #E67E22;
    --light: #ECF0F1;
    --text: #2C3E50;
    --text-light: #7F8C8D;
    --border: #BDC3C7;
    --success: #27AE60;
    --error: #E74C3C;
    --bg-light: #F8F9FA;
}

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

html, body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text);
    line-height: 1.6;
    background-color: var(--bg-light);
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* HEADER */
header {
    background: linear-gradient(135deg, var(--primary) 0%, #1a252f 100%);
    color: white;
    padding: 25px 0;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    position: sticky;
    top: 0;
    z-index: 100;
}

header .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 15px;
    flex: 0 0 auto;
}

.logo {
    width: 60px;
    height: 60px;
    min-width: 60px;
}

.logo-section h1 {
    font-size: 26px;
    font-weight: 700;
    margin: 0;
}

.tagline {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 25px;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    transition: color 0.3s, border-bottom 0.3s;
    padding-bottom: 5px;
    border-bottom: 2px solid transparent;
}

nav a:hover {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

/* CONTAINER */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* MAIN */
main {
    flex: 1;
    padding: 60px 0;
}

/* SEÇÃO PRODUTOS */
.produtos-section {
    background: linear-gradient(135deg, white 0%, var(--bg-light) 100%);
    padding: 80px 0;
    margin-bottom: 80px;
    border-bottom: 3px solid var(--accent);
}

.produtos-section h2 {
    font-size: 38px;
    color: var(--primary);
    text-align: center;
    margin-bottom: 50px;
    font-weight: 700;
}

.produtos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.produto-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
    position: relative;
}

.produto-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(230, 126, 34, 0.15);
}

.produto-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--accent);
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    z-index: 10;
}

.produto-icon {
    font-size: 48px;
    text-align: center;
    padding: 25px;
    background: var(--bg-light);
    border-bottom: 2px solid var(--accent);
}

.produto-card h3 {
    color: var(--primary);
    font-size: 18px;
    margin-bottom: 12px;
    padding: 20px 20px 0;
    font-weight: 600;
}

.produto-card p {
    color: var(--text-light);
    font-size: 14px;
    padding: 0 20px;
    margin-bottom: 20px;
    flex: 1;
}

.produto-preco {
    display: flex;
    gap: 10px;
    align-items: center;
    padding: 0 20px;
    margin-bottom: 20px;
}

.preco-lancamento {
    font-size: 24px;
    font-weight: 700;
    color: var(--accent);
}

.preco-normal {
    font-size: 14px;
    color: var(--text-light);
    text-decoration: line-through;
}

.btn-comprar {
    display: block;
    background: var(--accent);
    color: white;
    padding: 14px 20px;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: 0;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
    margin: auto 0 0 0;
}

.btn-comprar:hover {
    background: #d35400;
}

/* SEÇÃO ARTIGOS */
.artigos-section {
    background: white;
    padding: 80px 0;
}

.artigos-section h2 {
    font-size: 38px;
    color: var(--primary);
    text-align: center;
    margin-bottom: 50px;
    font-weight: 700;
}

.artigos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
}

.artigo-card {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
}

.artigo-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.artigo-header {
    background: linear-gradient(135deg, var(--primary) 0%, #1a252f 100%);
    padding: 15px 20px;
}

.artigo-categoria {
    display: inline-block;
    background: var(--accent);
    color: white;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
}

.artigo-conteudo {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.artigo-card h3 {
    font-size: 16px;
    color: var(--primary);
    margin-bottom: 10px;
    font-weight: 600;
}

.artigo-data {
    color: var(--text-light);
    font-size: 12px;
    margin-bottom: 12px;
}

.artigo-texto {
    color: var(--text);
    font-size: 13px;
    margin-bottom: 15px;
    line-height: 1.5;
    flex: 1;
}

.btn-ler {
    background: var(--accent);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 600;
    font-size: 13px;
    transition: background 0.3s;
    align-self: flex-start;
}

.btn-ler:hover {
    background: #d35400;
}

.sem-artigos {
    text-align: center;
    color: var(--text-light);
    padding: 60px 20px;
    font-size: 16px;
}

/* SEÇÃO SOBRE */
.sobre-section {
    background: linear-gradient(135deg, var(--primary) 0%, #1a252f 100%);
    color: white;
    padding: 80px 0;
    margin-top: 80px;
}

.sobre-section h2 {
    font-size: 38px;
    color: white;
    text-align: center;
    margin-bottom: 40px;
    font-weight: 700;
}

.sobre-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    margin-bottom: 50px;
}

.sobre-content p {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.9);
}

.sobre-valores {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.valor {
    background: rgba(255, 255, 255, 0.1);
    padding: 30px;
    border-radius: 8px;
    border-left: 4px solid var(--accent);
}

.valor strong {
    color: var(--accent);
    font-size: 18px;
    display: block;
    margin-bottom: 10px;
}

.valor p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
}

/* MODAL */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    overflow-y: auto;
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 40px;
    border-radius: 8px;
    width: 90%;
    max-width: 800px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close:hover {
    color: black;
}

.artigo-completo-texto {
    margin-top: 30px;
    line-height: 1.8;
    color: var(--text);
}

.artigo-completo-texto p {
    margin-bottom: 20px;
}

/* COMENTÁRIOS */
.comentarios {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 2px solid var(--light);
}

.comentarios h3 {
    color: var(--primary);
    margin-bottom: 20px;
    font-size: 18px;
}

#form-comentario {
    background: var(--bg-light);
    padding: 20px;
    border-radius: 5px;
    margin-top: 20px;
}

#form-comentario input,
#form-comentario textarea {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-family: inherit;
    font-size: 14px;
}

#form-comentario button {
    background: var(--accent);
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
}

#form-comentario button:hover {
    background: #d35400;
}

/* FOOTER */
footer {
    background: var(--primary);
    color: white;
    text-align: center;
    padding: 40px;
    margin-top: auto;
}

footer p {
    margin: 5px 0;
}

/* ADMIN PAGES */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.login-box h1 {
    font-size: 24px;
    color: var(--primary);
    margin-bottom: 10px;
}

.login-box p {
    color: var(--text-light);
    margin-bottom: 30px;
}

.login-box input {
    width: 100%;
    padding: 12px;
    margin-bottom: 20px;
    border: 1px solid var(--border);
    border-radius: 5px;
    font-size: 14px;
}

.login-box button {
    width: 100%;
    padding: 12px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
}

.login-box button:hover {
    background: #d35400;
}

.erro {
    background: #FFEBEE;
    color: var(--error);
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    border-left: 4px solid var(--error);
}

.sucesso {
    background: #E8F5E9;
    color: var(--success);
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    border-left: 4px solid var(--success);
}

.painel-container {
    max-width: 900px;
    margin: 0 auto;
}

.adicionar-artigo {
    background: white;
    padding: 30px;
    border-radius: 8px;
    margin-bottom: 40px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.adicionar-artigo h2 {
    color: var(--primary);
    margin-bottom: 20px;
    font-size: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 5px;
    font-size: 14px;
    font-family: inherit;
}

.form-group small {
    display: block;
    color: var(--text-light);
    font-size: 12px;
    margin-top: 5px;
}

.btn-principal {
    background: var(--accent);
    color: white;
    padding: 12px 30px;
    border: none;
    border-radius: 5px;
    font-weight: 600;
    cursor: pointer;
    font-size: 14px;
}

.btn-principal:hover {
    background: #d35400;
}

.artigos-admin {
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.artigos-admin h2 {
    color: var(--primary);
    margin-bottom: 20px;
    font-size: 24px;
}

table {
    width: 100%;
    border-collapse: collapse;
}

table thead {
    background: var(--light);
}

table th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    color: var(--primary);
    border-bottom: 2px solid var(--border);
}

table td {
    padding: 15px;
    border-bottom: 1px solid var(--border);
}

.btn-deletar {
    background: var(--error);
    color: white;
    padding: 6px 12px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
}

.btn-deletar:hover {
    background: #c0392b;
}

.btn-sair {
    background: var(--error);
    color: white;
    padding: 8px 15px;
    border: none;
    border-radius: 4px;
    text-decoration: none;
    cursor: pointer;
    font-size: 14px;
}

.btn-sair:hover {
    background: #c0392b;
}

/* RESPONSIVO */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }

    nav ul {
        gap: 12px;
        flex-wrap: wrap;
    }

    nav a {
        font-size: 12px;
    }

    .artigos-section h2,
    .produtos-section h2 {
        font-size: 28px;
    }

    .modal-content {
        width: 95%;
        margin: 30% auto;
        padding: 20px;
    }

    .artigos-grid {
        grid-template-columns: 1fr;
    }

    table {
        font-size: 12px;
    }

    table th, table td {
        padding: 8px;
    }
}