/* ═══════════════════════════════════════════════════════════════════════════
   BV Aulas de Violão & Músicas — Estilo principal
   Tema: Escuro com neon azul e dourado, musical
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Reset e Base ─────────────────────────────────────────────────────────── */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --cor-fundo: #0A1A3A;
    --cor-fundo-claro: #0F2350;
    --cor-fundo-card: #111D3E;
    --cor-neon-azul: #00D4FF;
    --cor-neon-dourado: #FFD700;
    --cor-neon-branco: #FFFFFF;
    --cor-texto: #E8EDF5;
    --cor-texto-secundario: #94A3C0;
    --cor-borda: rgba(0, 212, 255, 0.15);
    --cor-sombra: rgba(0, 212, 255, 0.1);
    --fonte-titulo: 'Poppins', sans-serif;
    --fonte-corpo: 'Inter', sans-serif;
    --max-largura: 1200px;
    --transicao: 0.3s ease;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--fonte-corpo);
    background-color: var(--cor-fundo);
    color: var(--cor-texto);
    line-height: 1.7;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--cor-neon-azul);
    text-decoration: none;
    transition: color var(--transicao);
}

a:hover {
    color: var(--cor-neon-dourado);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--fonte-titulo);
    font-weight: 700;
    line-height: 1.2;
    color: var(--cor-neon-branco);
}

.container {
    width: 100%;
    max-width: var(--max-largura);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ── Efeito Neon ──────────────────────────────────────────────────────────── */
.neon-text {
    text-shadow:
        0 0 7px var(--cor-neon-azul),
        0 0 10px var(--cor-neon-azul),
        0 0 21px var(--cor-neon-azul),
        0 0 42px rgba(0, 212, 255, 0.4);
}

.neon-gold-text {
    text-shadow:
        0 0 7px var(--cor-neon-dourado),
        0 0 10px var(--cor-neon-dourado),
        0 0 21px var(--cor-neon-dourado),
        0 0 42px rgba(255, 215, 0, 0.3);
}

.neon-border {
    border: 1px solid var(--cor-neon-azul);
    box-shadow:
        0 0 5px var(--cor-neon-azul),
        0 0 10px rgba(0, 212, 255, 0.3),
        inset 0 0 5px rgba(0, 212, 255, 0.1);
}

.neon-border-gold {
    border: 1px solid var(--cor-neon-dourado);
    box-shadow:
        0 0 5px var(--cor-neon-dourado),
        0 0 10px rgba(255, 215, 0, 0.3),
        inset 0 0 5px rgba(255, 215, 0, 0.1);
}

/* ── Botões ───────────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    border-radius: 50px;
    font-family: var(--fonte-titulo);
    font-weight: 600;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all var(--transicao);
    border: 2px solid transparent;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--cor-neon-azul), #0099CC);
    color: var(--cor-fundo);
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.4);
}

.btn-primary:hover {
    box-shadow: 0 0 25px rgba(0, 212, 255, 0.6);
    transform: translateY(-2px);
    color: var(--cor-fundo);
}

.btn-secondary {
    background: transparent;
    color: var(--cor-neon-dourado);
    border-color: var(--cor-neon-dourado);
    box-shadow: 0 0 10px rgba(255, 215, 0, 0.2);
}

.btn-secondary:hover {
    background: var(--cor-neon-dourado);
    color: var(--cor-fundo);
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.4);
}

.btn-whatsapp {
    background: #25D366;
    color: #fff;
    box-shadow: 0 0 15px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp:hover {
    background: #1DA851;
    box-shadow: 0 0 25px rgba(37, 211, 102, 0.5);
    color: #fff;
}

/* ── Header / Navegação ──────────────────────────────────────────────────── */
.site-header {
    background: rgba(10, 26, 58, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--cor-borda);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 0.75rem 0;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    flex-shrink: 0;
}

.nav-logo img {
    height: 50px;
    width: auto;
    border-radius: 6px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0.25rem;
    align-items: center;
}

.nav-menu a {
    color: var(--cor-texto);
    font-family: var(--fonte-titulo);
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all var(--transicao);
    white-space: nowrap;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--cor-neon-dourado);
    background: rgba(255, 215, 0, 0.08);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 26px;
    height: 3px;
    background: var(--cor-neon-azul);
    border-radius: 3px;
    transition: var(--transicao);
}

/* ── Hero Section ────────────────────────────────────────────────────────── */
.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    filter: brightness(0.35);
}

.hero picture {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.hero picture img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.35);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(10, 26, 58, 0.8), rgba(15, 35, 80, 0.6));
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    padding: 3rem 0;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: 1rem;
}

.hero h1 .highlight {
    color: var(--cor-neon-dourado);
}

.hero p {
    font-size: 1.15rem;
    color: var(--cor-texto-secundario);
    margin-bottom: 2rem;
    max-width: 560px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

/* ── Seções Gerais ───────────────────────────────────────────────────────── */
.section {
    padding: 5rem 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: clamp(1.6rem, 3.5vw, 2.5rem);
    margin-bottom: 0.75rem;
}

.section-title p {
    color: var(--cor-texto-secundario);
    max-width: 600px;
    margin: 0 auto;
    font-size: 1.05rem;
}

/* ── Cards de Cursos ─────────────────────────────────────────────────────── */
.cursos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.curso-card {
    background: var(--cor-fundo-card);
    border: 1px solid var(--cor-borda);
    border-radius: 16px;
    overflow: hidden;
    transition: all var(--transicao);
}

.curso-card:hover {
    transform: translateY(-6px);
    border-color: var(--cor-neon-azul);
    box-shadow: 0 10px 40px rgba(0, 212, 255, 0.15);
}

.curso-card-img {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.curso-card picture {
    display: block;
    width: 100%;
}

.curso-card picture img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    display: block;
}

.curso-card-body {
    padding: 1.5rem;
}

.curso-card-body h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--cor-neon-dourado);
}

.curso-card-body p {
    color: var(--cor-texto-secundario);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.curso-card-body .tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.curso-card-body .tag {
    font-size: 0.78rem;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    background: rgba(0, 212, 255, 0.1);
    color: var(--cor-neon-azul);
    border: 1px solid rgba(0, 212, 255, 0.25);
}

/* ── Seção Sobre ─────────────────────────────────────────────────────────── */
.sobre-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.sobre-img {
    border-radius: 16px;
    overflow: hidden;
    border: 2px solid var(--cor-borda);
}

.sobre-img img {
    width: 100%;
    height: auto;
}

.sobre-text h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.sobre-text p {
    color: var(--cor-texto-secundario);
    margin-bottom: 1rem;
}

.sobre-text ul {
    list-style: none;
    margin-top: 1rem;
}

.sobre-text ul li {
    padding: 0.4rem 0;
    color: var(--cor-texto);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sobre-text ul li::before {
    content: '🎸';
    font-size: 1.1rem;
}

/* ── Depoimentos ─────────────────────────────────────────────────────────── */
.depoimentos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.depoimento-card {
    background: var(--cor-fundo-card);
    border: 1px solid var(--cor-borda);
    border-radius: 16px;
    padding: 2rem;
    position: relative;
}

.depoimento-card::before {
    content: '\201C';
    position: absolute;
    top: 0.5rem;
    left: 1.25rem;
    font-size: 4rem;
    color: var(--cor-neon-dourado);
    opacity: 0.3;
    font-family: Georgia, serif;
    line-height: 1;
}

.depoimento-card p {
    font-style: italic;
    color: var(--cor-texto);
    margin-bottom: 1rem;
    padding-top: 1.5rem;
}

.depoimento-autor {
    font-weight: 600;
    color: var(--cor-neon-azul);
    font-size: 0.9rem;
}

/* ── FAQ ─────────────────────────────────────────────────────────────────── */
.faq-item {
    border: 1px solid var(--cor-borda);
    border-radius: 12px;
    margin-bottom: 1rem;
    overflow: hidden;
    background: var(--cor-fundo-card);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    background: none;
    border: none;
    color: var(--cor-texto);
    font-family: var(--fonte-titulo);
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    transition: all var(--transicao);
}

.faq-question:hover {
    color: var(--cor-neon-dourado);
}

.faq-question .icon {
    font-size: 1.5rem;
    color: var(--cor-neon-azul);
    transition: transform var(--transicao);
}

.faq-item.active .faq-question .icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 0 1.5rem 1.25rem;
}

.faq-answer p {
    color: var(--cor-texto-secundario);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ── Contato ─────────────────────────────────────────────────────────────── */
.contato-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contato-info-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--cor-borda);
}

.contato-info-item:last-child {
    border-bottom: none;
}

.contato-info-item .icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(0, 212, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contato-info-item h4 {
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
    color: var(--cor-neon-azul);
}

.contato-info-item p {
    color: var(--cor-texto-secundario);
    font-size: 0.9rem;
}

.contato-info-item a {
    color: var(--cor-texto);
}

/* ── Formulário ──────────────────────────────────────────────────────────── */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-family: var(--fonte-titulo);
    font-weight: 500;
    font-size: 0.9rem;
    margin-bottom: 0.4rem;
    color: var(--cor-texto);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 1px solid var(--cor-borda);
    border-radius: 10px;
    background: var(--cor-fundo-claro);
    color: var(--cor-texto);
    font-family: var(--fonte-corpo);
    font-size: 0.95rem;
    transition: border-color var(--transicao);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--cor-neon-azul);
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.2);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ── Footer ──────────────────────────────────────────────────────────────── */
.site-footer {
    background: var(--cor-fundo-claro);
    border-top: 1px solid var(--cor-borda);
    padding: 3rem 0 1.5rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-col h4 {
    font-size: 0.95rem;
    margin-bottom: 1rem;
    color: var(--cor-neon-dourado);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 0.5rem;
}

.footer-col ul a {
    color: var(--cor-texto-secundario);
    font-size: 0.9rem;
}

.footer-col ul a:hover {
    color: var(--cor-neon-azul);
}

.footer-col p {
    color: var(--cor-texto-secundario);
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-bottom {
    border-top: 1px solid var(--cor-borda);
    padding-top: 1.5rem;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-bottom p {
    color: var(--cor-texto-secundario);
    font-size: 0.82rem;
}

.footer-logo img {
    height: 40px;
    width: auto;
    border-radius: 4px;
}

/* ── Banner Contato ──────────────────────────────────────────────────────── */
.banner-contato {
    position: relative;
    overflow: hidden;
    border-radius: 16px;
    margin: 2rem 0;
}

.banner-contato img,
.banner-contato picture img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    filter: brightness(0.5);
    display: block;
}

.banner-contato picture {
    display: block;
    width: 100%;
}

.banner-contato .overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.banner-contato h3 {
    font-size: 1.5rem;
    color: var(--cor-neon-branco);
    text-shadow: 0 0 10px var(--cor-neon-azul);
}

/* ── Responsivo ──────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
    .sobre-grid,
    .contato-grid {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--cor-fundo-claro);
        flex-direction: column;
        padding: 1rem;
        border-bottom: 1px solid var(--cor-borda);
        gap: 0;
    }

    .nav-menu.open {
        display: flex;
    }

    .nav-menu a {
        padding: 0.75rem 1rem;
        width: 100%;
    }

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

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

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .hero {
        min-height: 70vh;
    }

    .section {
        padding: 3rem 0;
    }
}

@media (max-width: 480px) {
    .hero-content {
        padding: 2rem 0;
    }

    .hero-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }
}