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

:root {
    --preto: #0d1b2a;
    --preto-card: #112236;
    --preto-borda: #1e3a5f;
    --azul-escuro: #0f2d4a;
    --azul: #1a5276;
    --azul-medio: #1f6096;
    --azul-claro: #2e86c1;
    --azul-accent: #3498db;
    --branco: #e4edf5;
    --cinza: #8bafc8;
    --cinza-claro: #c5d8e8;
    --radius: 12px;
    --max-width: 1100px;
}


body {
    font-family: 'Space Grotesk', 'Segoe UI', Arial, sans-serif;
    background: var(--preto);
    color: var(--branco);
    line-height: 1.6;
}

/* tom de fundo alternado para seções */
section:nth-child(even) .container { /* usado via classe */ }

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

/* ===== BOTÕES ===== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--azul-medio), var(--azul-claro));
    color: var(--branco);
    padding: 14px 36px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    box-shadow: 0 0 0 rgba(46,134,193,0);
    transition: opacity 0.2s, transform 0.2s, box-shadow 0.2s;
}
.btn-primary:hover {
    opacity: 1;
    transform: scale(1.03);
    box-shadow: 0 6px 24px rgba(46,134,193,0.4);
}
.btn-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    border: 1px solid var(--preto-borda);
    color: var(--branco);
    padding: 12px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    background: rgba(255,255,255,0.05);
    box-shadow: 0 0 0 rgba(46,134,193,0);
    transition: background 0.2s, border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.btn-secondary:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--azul-accent);
    transform: scale(1.03);
    box-shadow: 0 6px 24px rgba(46,134,193,0.4);
}

/* ===== HEADER / NAV ===== */
#header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: transparent;
    backdrop-filter: blur(0px);
    border-bottom: 1px solid transparent;
    transition: background 0.4s ease, backdrop-filter 0.4s ease, border-color 0.4s ease;
}
#header.scrolled {
    background: rgba(13, 27, 42, 0.92);
    backdrop-filter: blur(16px);
    border-bottom-color: var(--preto-borda);
}

nav {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--branco);
    transition: opacity 0.2s;
}
.nav-logo:hover { opacity: 0.85; }
.nav-logo img { height: 36px; width: auto; object-fit: contain; filter: brightness(0) invert(1); }

.nav-links {
    list-style: none;
    display: flex;
    gap: 4px;
    flex: 1;
    justify-content: center;
}
.nav-links a {
    position: relative;
    color: var(--cinza-claro);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: 6px;
    transition: color 0.2s, background 0.2s;
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 14px;
    right: 14px;
    height: 2px;
    background: var(--azul-accent);
    border-radius: 2px;
    transform: scaleX(0);
    transition: transform 0.25s ease;
}
.nav-links a:hover { color: var(--branco); background: rgba(255,255,255,0.06); }
.nav-links a:hover::after { transform: scaleX(1); }
.nav-links a.active { color: var(--branco); }
.nav-links a.active::after { transform: scaleX(1); }

.nav-cta { flex-shrink: 0; }
.nav-cta .btn-primary.btn-icon-only {
    padding: 10px;
    width: 38px;
    height: 38px;
    justify-content: center;
}
.nav-cta .btn-icon-only .btn-icon { width: 18px; height: 18px; }

.nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--preto-borda);
    color: var(--branco);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 6px 10px;
    border-radius: 6px;
    transition: background 0.2s;
}
.nav-toggle:hover { background: rgba(255,255,255,0.08); }

/* ===== CONTAINER ===== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 100px 24px;
}

/* ===== TÍTULOS DE SEÇÃO ===== */
section h2 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--branco);
    margin-bottom: 16px;
}
.section-sub {
    color: var(--cinza);
    font-size: 1rem;
    margin-top: 8px;
}

/* ===== HERO ===== */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 80px 24px 60px;
    position: relative;
    overflow: hidden;
    background: var(--preto);
}

/* Glow azul centralizado */
#hero::before {
    content: '';
    position: absolute;
    top: 10%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 600px;
    background: radial-gradient(ellipse at center, rgba(30,96,150,0.6) 0%, rgba(15,45,74,0.35) 50%, transparent 75%);
    pointer-events: none;
    z-index: 0;
}

#hero-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    max-width: 800px;
}

.hero-title {
    font-family: 'Sora', 'Space Grotesk', 'Segoe UI', Arial, sans-serif;
    font-size: clamp(2.4rem, 6vw, 4rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -1px;
    color: var(--branco);
}

.hero-sub {
    color: var(--cinza-claro);
    font-size: 1.1rem;
    max-width: 520px;
    line-height: 1.7;
}

/* ===== SOBRE ===== */
#sobre {
    border-top: 1px solid var(--preto-borda);
    background: var(--azul-escuro);
    position: relative;
    overflow: hidden;
}
#sobre p { color: var(--cinza); font-size: 1.05rem; max-width: 680px; margin-top: 20px; }
#sobre p + p { margin-top: 14px; }
#sobre p strong { color: var(--branco); font-weight: 600; }

#sobre-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.sobre-container {
    display: flex;
    gap: 64px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.sobre-logo {
    flex-shrink: 0;
    background: rgba(255,255,255,0.18);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 20px;
    padding: 28px 36px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}
.sobre-logo img { width: 220px; height: auto; }

.sobre-texto { flex: 1; }

@media (max-width: 860px) {
    .sobre-container { flex-direction: column; gap: 40px; }
    .sobre-logo { align-self: flex-start; }
    .sobre-logo img { width: 180px; }
}

.sobre-stats {
    display: flex;
    gap: 48px;
    margin-top: 48px;
    flex-wrap: wrap;
}
.stat strong {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--branco);
    line-height: 1;
}
.stat span { color: var(--cinza); font-size: 0.9rem; margin-top: 4px; display: block; }

/* ===== SERVIÇOS ===== */
#servicos {
    border-top: 1px solid var(--preto-borda);
    background: var(--preto);
    position: relative;
    overflow: hidden;
}
#servicos-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}
#servicos .container { position: relative; z-index: 1; }

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 14px;
    margin-top: 48px;
    align-items: start;
}

.card {
    background: var(--preto-card);
    border: 1px solid var(--preto-borda);
    border-radius: var(--radius);
    transition: border-color 0.2s, transform 0.2s;
}
.card:hover { border-color: var(--azul-accent); transform: translateY(-2px); }
.card[open] { border-color: var(--azul-accent); }

.card summary {
    list-style: none;
    cursor: pointer;
    padding: 16px 40px 16px 16px;
    position: relative;
    display: flex;
    align-items: center;
    gap: 12px;
    min-height: 52px;
}
.card summary::-webkit-details-marker { display: none; }
.card summary::after {
    content: '+';
    position: absolute;
    top: 50%;
    right: 16px;
    transform: translateY(-50%);
    color: var(--cinza);
    font-size: 1.1rem;
    font-weight: 600;
    transition: transform 0.2s, color 0.2s;
}
.card[open] summary::after { transform: translateY(-50%) rotate(45deg); color: var(--azul-accent); }

.card-icon {
    flex-shrink: 0;
    line-height: 1;
    color: var(--cinza-claro);
}
.card-icon svg { width: 20px; height: 20px; display: block; }
.card h3 { color: var(--branco); font-size: 0.92rem; font-weight: 600; line-height: 1.3; }

.card-detail {
    padding: 0 16px 18px;
    border-top: 1px solid var(--preto-borda);
    margin-top: 2px;
    padding-top: 14px;
}
.card-detail p { color: var(--cinza-claro); font-size: 0.85rem; line-height: 1.6; }

/* Cards quadrados (Portfólio) */
.cards-square {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.cards-square .card summary {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    aspect-ratio: 1;
    gap: 14px;
    padding: 24px;
}
.cards-square .card-icon svg { width: 26px; height: 26px; }
.cards-square .card h3 { font-size: 1rem; padding-right: 0; }
.cards-square .card summary::after { top: 20px; right: 20px; }

/* ===== PORTFÓLIO ===== */
#portfolio {
    border-top: 1px solid var(--preto-borda);
    background: var(--azul-escuro);
    position: relative;
    overflow: hidden;
}
#portfolio-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}
#portfolio .container { position: relative; z-index: 1; }

/* ===== CONTATO ===== */
#contato {
    border-top: 1px solid var(--preto-borda);
    position: relative;
    overflow: hidden;
}
#contato::before {
    content: '';
    position: absolute;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 400px;
    background: radial-gradient(ellipse at center, rgba(30,96,150,0.35) 0%, transparent 70%);
    pointer-events: none;
}
#contato .container { position: relative; z-index: 1; text-align: center; }
#contato h2 { font-size: clamp(1.8rem, 4vw, 3rem); }
#contato > .container > p { color: var(--cinza); margin-top: 16px; font-size: 1.05rem; }

.contato-links {
    display: flex;
    gap: 16px;
    margin-top: 40px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== ANIMAÇÕES DE ENTRADA ===== */
.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }
.reveal-delay-6 { transition-delay: 0.6s; }

/* ===== FOOTER ===== */
footer {
    border-top: 1px solid var(--preto-borda);
    text-align: center;
    padding: 28px 24px;
    color: var(--cinza);
    font-size: 0.85rem;
}

/* ===== RESPONSIVO ===== */
@media (max-width: 768px) {
    .nav-toggle { display: block; }
    .nav-cta { display: none; }

    .nav-links {
        display: none;
        flex-direction: column;
        gap: 0;
        position: absolute;
        top: 60px; left: 0; right: 0;
        background: rgba(10,10,10,0.97);
        border-bottom: 1px solid var(--preto-borda);
        padding: 8px 0;
    }
    .nav-links.open { display: flex; }
    .nav-links li a { display: block; padding: 14px 24px; }

    .hero-title { font-size: 2rem; }
    section h2 { font-size: 1.7rem; }
    .container { padding: 72px 20px; }
    .sobre-stats { gap: 32px; }

    .cards-square {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
        gap: 10px;
        align-items: stretch;
    }
    .cards-square .card { display: flex; flex-direction: column; }
    .cards-square .card summary {
        aspect-ratio: auto;
        min-height: 150px;
        padding: 18px;
        width: 100%;
    }
    .cards-square .card[open] {
        grid-column: 1 / -1;
        display: grid;
        grid-template-columns: 130px 1fr;
        align-items: start;
    }
    .cards-square .card[open] summary {
        min-height: 0;
        width: 100%;
    }
    .cards-square .card[open] .card-detail {
        border-top: none;
        border-left: 1px solid var(--preto-borda);
        margin-top: 0;
        padding: 18px;
        align-self: stretch;
    }
}