/* ==========================================================================
   DESIGN SYSTEM - Andrei Costa
   --------------------------------------------------------------------------
   Inspirado em estéticas de alta performance e dark mode elegante.
   Foco em tipografia nítida, glassmorphism e iluminação atmosférica em Azul Celeste.
   ========================================================================== */
:root {
    /* Cores de Fundo Absolutamente Escuras */
    --bg-main: #000000;
    --bg-surface: rgba(15, 15, 15, 0.6);
    --bg-surface-hover: rgba(30, 30, 30, 0.8);

    /* Bordas Premium (Finíssimas e sutis) */
    --border-color: rgba(255, 255, 255, 0.08);
    --border-highlight: rgba(135, 206, 235, 0.25);
    /* Azul Celeste translúcido */

    /* Acentos - Azul Celeste (#87CEEB) */
    --accent: #87CEEB;
    --accent-glow: rgba(135, 206, 235, 0.15);

    /* Tipografia de Alto Contraste */
    --text-primary: #FFFFFF;
    --text-secondary: #E0E0E0;
    /* Cinza muito claro */
    --text-muted: #888888;

    /* Tipografia e Movimento */
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --font-title: 'Inter', sans-serif;
    --font-logo: 'WindSong', cursive;
    --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --radius-lg: 16px;
    --radius-md: 10px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-main);
    background-image: radial-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    position: relative;
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Luz Atmosférica Superior en azul celeste sutil */
body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 1200px;
    height: 1000px;
    background: radial-gradient(ellipse at top, rgba(135, 206, 235, 0.08) 0%, rgba(135, 206, 235, 0) 70%);
    filter: blur(80px);
    -webkit-filter: blur(80px);
    z-index: -1;
    pointer-events: none;
}

/* Tipografia Base */
h1,
h2,
h3 {
    letter-spacing: -0.03em;
    line-height: 1.2;
    font-weight: 700;
}

.accent-text {
    color: var(--accent);
}

.mono-text {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    letter-spacing: -0.01em;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--accent);
    letter-spacing: -0.04em;

    /* Mix de sombras para efeito 3D flutuante */
    text-shadow:
        0 1px 0 rgba(255, 255, 255, 0.4),
        /* Brilho na quina superior */
        0 4px 4px rgba(0, 0, 0, 0.25),
        /* Sombra de contato */
        0 0 40px rgba(102, 138, 255, 0.3);
    /* Brilho neon suave */

    /* Ajuste de legibilidade */
    backdrop-filter: blur(4px);
    border-left: 4px solid var(--accent-glow);
    /* Detalhe lateral de acento */
    padding-left: 2rem;
    margin-bottom: 3.2rem;
}

/* =========================================================
   LAYOUT COMPONENTES
   ========================================================= */
main {
    max-width: 100vw;
    width: 1040px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

section {
    padding: 6rem 0;
}

/* HEADER */
.glass-header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border-bottom: 1px solid transparent;
    transition: background 0.3s ease, backdrop-filter 0.3s ease, border 0.3s ease;
}

.glass-header.scrolled {
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
}

nav {
    max-width: 1040px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-logo);
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--accent);
}

.nav-links {
    display: none;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent);
}

.menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.menu-toggle .bar {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
    transform-origin: center;
}

.menu-toggle.active .bar-1 {
    transform: translateY(8px) rotate(45deg);
}

.menu-toggle.active .bar-2 {
    opacity: 0;
    transform: translateX(10px);
}

.menu-toggle.active .bar-3 {
    transform: translateY(-8px) rotate(-45deg);
}

@media (min-width: 850px) {
    .menu-toggle {
        display: none;
    }

    .nav-links {
        display: flex;
    }

    .lang-switcher {
        display: flex;
    }
}

/* Language Switcher */
.lang-switcher {
    display: none;
    /* Hidden on mobile by default, handled by media query below */
    gap: 0.25rem;
    align-items: center;
    margin-left: 1.5rem;
    padding: 0.3rem 0.6rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.lang-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    padding: 0.2rem 0.5rem;
    border-radius: 20px;
}

.lang-btn.active {
    color: var(--accent);
    background: rgba(135, 206, 235, 0.1);
}

.lang-btn:hover:not(.active) {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.lang-divider {
    width: 1px;
    height: 10px;
    background: var(--border-color);
}

@media (min-width: 850px) {
    .lang-switcher {
        display: flex;
    }
}

@media (max-width: 849px) {
    .lang-switcher {
        display: flex;
        margin-left: 0;
        margin-right: 1rem;
        position: relative;
        z-index: 1002;
    }
}

/* HERO SECTION */
#hero {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

.hero-bg-container {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.hero-bg-video {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    min-width: 100%;
    min-height: 100%;
    object-fit: cover;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 1.25s ease;
    z-index: 1;
    will-change: opacity;
}

.hero-bg-video.loaded {
    opacity: 1;
}

.hero-bg-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    transition: opacity 1.25s ease;
    z-index: 0;
}

.hero-bg-video.loaded+.hero-bg-image {
    opacity: 0;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg,
            rgba(0, 0, 0, 0.7) 0%,
            rgba(0, 0, 0, 0.3) 50%,
            var(--bg-main) 100%);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 1200px;
    padding: 0 1.5rem;
    opacity: 0;
    /* Começa invisível para animação manual */
    transform: translateY(20px);
    transition: opacity 1.2s cubic-bezier(0.16, 1, 0.3, 1),
        transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-content.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.profile-container {
    margin-bottom: 2rem;
    position: relative;
    width: 200px;
    height: 200px;
}

.hero-profile-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    border: 3px solid var(--border-highlight);
    box-shadow: 0 0 40px var(--accent-glow), 0 0 80px rgba(0, 0, 0, 0.6);
    transition: var(--transition);
}

.hero-profile-img:hover {
    transform: scale(1.05);
    border-color: var(--accent);
    box-shadow: 0 0 50px var(--accent-glow);
}

.hero-content h1 {
    font-size: clamp(3rem, 8vw, 5.5rem);
    margin-bottom: 1.5rem;
    letter-spacing: -0.04em;
    line-height: 1.1;
}

.hero-name {
    font-family: var(--font-logo);
    font-weight: 400;
    display: block;
    margin-bottom: 0.5rem;
    background: linear-gradient(180deg, #FFFFFF 0%, #B0B0B0 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content h1 .accent-text {
    display: block;
    font-size: clamp(1.2rem, 3vw, 2rem);
    color: var(--accent);
    padding-bottom: 10px;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.hero-content h2 {
    font-size: clamp(1.1rem, 2.8vw, 1.4rem);
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-weight: 400;
    max-width: 850px;
    line-height: 1.6;
}

.location-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.6rem 1.2rem;
    background: rgba(135, 206, 235, 0.08);
    border: 1px solid var(--border-highlight);
    border-radius: 100px;
    margin-bottom: 3.5rem;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: var(--transition);
    cursor: default;
}

.location-badge:hover {
    transform: translateY(-2px);
    background: rgba(135, 206, 235, 0.12);
    box-shadow: 0 0 20px var(--accent-glow);
}

.badge-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    font-family: var(--font-mono);
    letter-spacing: 0.02em;
}

.badge-icon {
    font-size: 1rem;
    filter: drop-shadow(0 0 5px var(--accent-glow));
}

.social-links {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-primary,
.cta-secondary {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 600;
    padding: 1rem 2.2rem;
    border-radius: 100px;
    transition: var(--transition);
}

.cta-primary {
    color: var(--bg-main);
    background: var(--accent);
    border: 1px solid var(--accent);
    box-shadow: 0 4px 20px var(--accent-glow);
}

.cta-primary:hover {
    background: transparent;
    color: var(--accent);
    transform: translateY(-3px);
    box-shadow: 0 0 30px var(--accent-glow);
}

.cta-secondary {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.cta-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-3px);
    box-shadow: 0 0 20px var(--accent-glow);
}

/* ABOUT */
.about-content {
    max-width: 850px;
    margin-left: 2rem;
    margin-right: 2rem;
}

.about-content p {
    color: var(--text-secondary);
    font-size: 1.15rem;
    /* Levemente menor para parecer mais elegante */
    margin-bottom: 2rem;
    font-weight: 400;
    line-height: 1.85;
    text-align: justify;
    /* Opcional: traz um ar mais editorial/acadêmico */
    hyphens: auto;
    letter-spacing: -0.01em;
    /* Ajuste fino para fontes modernas */
}

/* Efeito de destaque para a primeira frase ou termos-chave */
.about-content p:first-of-type::first-line {
    font-weight: 600;
    color: var(--text-primary);
}

/* BENTO GRID */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-left: 2rem;
    margin-right: 2rem;
}

.bento-item {
    background: linear-gradient(180deg, rgba(20, 20, 20, 0.4) 0%, rgba(10, 10, 10, 0.6) 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.bento-item:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    background: linear-gradient(180deg, rgba(30, 30, 30, 0.5) 0%, rgba(20, 20, 20, 0.7) 100%);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.7), 0 0 15px var(--accent-glow) inset;
}

.bento-item h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.bento-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* TIMELINE */
.timeline {
    position: relative;
    max-width: 850px;
    margin-left: 2.75rem;
    margin-right: 2rem;
    padding-left: 2.5rem;
    border-left: 1px solid var(--border-highlight);
}

.timeline-item {
    position: relative;
    margin-bottom: 4rem;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -3rem;
    top: 0.3rem;
    width: 0.7rem;
    height: 0.7rem;
    border-radius: 50%;
    background: var(--bg-main);
    border: 2px solid var(--text-muted);
    transition: var(--transition);
}

.timeline-item:hover::before {
    border-color: var(--accent);
    background: var(--accent);
    box-shadow: 0 0 10px var(--accent);
}

.timeline-date {
    color: var(--text-muted);
    margin-bottom: 0.8rem;
    display: inline-block;
    padding: 0.2rem 0.8rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 100px;
}

.timeline-content h3 {
    font-size: 1.3rem;
    margin-bottom: 0.4rem;
    color: var(--text-primary);
}

.timeline-content p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* FOOTER CTA */
.premium-footer {
    position: relative;
    margin-top: 5rem;
    padding: 6rem 1.5rem 3rem 1.5rem;
    border-top: 1px solid var(--border-color);
}

.premium-footer::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 50%;
    transform: translateX(-50%);
    width: 40%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    box-shadow: 0 0 20px 2px var(--accent-glow);
}

.footer-container {
    max-width: 1040px;
    margin: 0 auto;
}

.footer-cta {
    position: relative;
    background: linear-gradient(180deg, rgba(20, 20, 20, 0.4) 0%, rgba(10, 10, 10, 0.6) 100%);
    border: 1px solid var(--border-highlight);
    border-radius: var(--radius-lg);
    padding: 5rem 2rem;
    text-align: center;
    overflow: hidden;
    box-shadow: 0 20px 40px -20px rgba(0, 0, 0, 0.8);
    transition: var(--transition);
}

.cta-glow {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 50%;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    pointer-events: none;
}

.footer-cta h2 {
    font-size: clamp(2rem, 4vw, 2.8rem);
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.footer-cta p {
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto 2rem auto;
    font-size: 1.15rem;
    line-height: 1.6;
}

.cta-button {
    /* Estrutura Otimizada */
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    position: relative;
    padding: 1rem 2.2rem;

    /* Tipografia */
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.5px;
    color: var(--bg-main);
    text-decoration: none;

    /* Fundo e Bordas */
    background: var(--text-primary);
    border-radius: 50px;
    /* Reduzi para 50px (padrão pílula moderno) */
    border: 1px solid rgba(255, 255, 255, 0.1);

    /* Animação e Performance */
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    /* Transição orgânica */
    overflow: hidden;
    z-index: 1;
}

/* Efeito de Brilho Interno (Overlay) */
.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
            transparent,
            rgba(255, 255, 255, 0.2),
            transparent);
    transition: 0.5s;
    z-index: -1;
}

.cta-button:hover {
    color: #fff;
    background: var(--accent);
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2),
        0 0 25px var(--accent-glow);
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:active {
    transform: translateY(-1px) scale(0.98);
}

.footer-legal {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-legal p {
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.footer-legal .logo {
    color: var(--accent);
    font-size: 1.2rem;
    font-weight: 700;
}

/* OBSERVER ANIMATIONS */
.fade-element {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
}

.fade-element.is-visible {
    opacity: 1;
    transform: translateY(0);
    will-change: auto;
}

/* MEDIA QUERIES */
@media (max-width: 850px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        width: 100%;
        height: 100vh;
        background: rgba(0, 0, 0, 0.98);
        backdrop-filter: blur(25px);
        -webkit-backdrop-filter: blur(25px);
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2.5rem;
        z-index: 999;
        transform: translateX(100%);
        visibility: hidden;
        transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .nav-links.active {
        transform: translateX(0);
        visibility: visible;
    }

    .nav-links a {
        font-size: 1.8rem;
    }

    #hero {
        text-align: center;
        justify-content: center;
    }

    .hero-content {
        align-items: center;
    }

    .social-links {
        justify-content: center;
    }
}