/* ============================================================
   PORTFÓLIO — JOSÉ BRUNO SOUSA
   Versão otimizada: semântica, performance, acessibilidade
   ============================================================ */

/* ============================================================
   1. VARIÁVEIS E RESET
   ============================================================ */

:root {
    /* Cores */
    --clr-primary:   #0066ff;
    --clr-secondary: #00d4ff;
    --clr-accent:    #0099ff;

    /* Backgrounds */
    --bg-dark:    #0a0e27;
    --bg-mid:     #1a1f3a;
    --bg-deep:    #252d47;

    /* Texto */
    --txt-primary:   #ffffff;
    --txt-secondary: #b0b9d4;

    /* Superfícies glassmorphism */
    --glass-bg:     rgba(15, 23, 42, 0.70);
    --glass-border: rgba(0, 102, 255, 0.15);
    --border-color: rgba(0, 102, 255, 0.20);

    /* Tipografia */
    --font-body: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;

    /* Transição padrão */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    /* Espaçamentos de seção */
    --section-py: clamp(60px, 8vw, 100px);
}

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

html {
    scroll-behavior: smooth;
    /* Evita overflow-x causado por animações */
    overflow-x: hidden;
}

body {
    font-family: var(--font-body);
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-mid) 100%);
    color: var(--txt-primary);
    line-height: 1.6;
    overflow-x: hidden;
    /* Garante que o body seja renderizado com texto nítido */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Respeitar preferência de movimento reduzido */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Focus visível para navegação por teclado */
:focus-visible {
    outline: 2px solid var(--clr-primary);
    outline-offset: 3px;
    border-radius: 4px;
}

/* Remover outline padrão apenas para mouse */
:focus:not(:focus-visible) {
    outline: none;
}

/* Listas sem marcador (usadas nos tech-tags) */
ul {
    list-style: none;
}

/* ============================================================
   2. UTILITÁRIOS
   ============================================================ */

.container {
    max-width: 1200px;
    margin-inline: auto;
    padding-inline: clamp(16px, 4vw, 32px);
}

/* ============================================================
   3. SCROLLBAR CUSTOMIZADA
   ============================================================ */

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--clr-primary), var(--clr-secondary));
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--clr-secondary), var(--clr-primary));
}

/* ============================================================
   4. NAVEGAÇÃO
   ============================================================ */

.navbar {
    position: fixed;
    inset-block-start: 0;
    inset-inline: 0;
    z-index: 1000;
    background: rgba(10, 14, 39, 0.80);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding-block: 1rem;
    /* Transição para o efeito de scroll */
    transition: background 0.3s ease, box-shadow 0.3s ease;
    will-change: background;
}

.navbar.scrolled {
    background: rgba(10, 14, 39, 0.96);
    box-shadow: 0 4px 20px rgba(0, 102, 255, 0.10);
}

.nav-container {
    max-width: 1200px;
    margin-inline: auto;
    padding-inline: clamp(16px, 4vw, 32px);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Logo */
.nav-logo {
    text-decoration: none;
    display: flex;
}

.logo-text {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
    border-radius: 8px;
    color: #fff;
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
}

/* Menu */
.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--txt-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.25s ease;
    position: relative;
    padding-block-end: 2px;
}

.nav-link::after {
    content: '';
    position: absolute;
    inset-block-end: -4px;
    inset-inline-start: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--clr-primary), var(--clr-secondary));
    transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link:focus-visible {
    color: var(--clr-primary);
}

.nav-link:hover::after,
.nav-link:focus-visible::after {
    width: 100%;
}

/* Hambúrguer */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 4px;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--clr-primary);
    border-radius: 2px;
    transition: var(--transition);
    transform-origin: center;
}

/* Animação hamburger → X */
.hamburger[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}
.hamburger[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.hamburger[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* ============================================================
   5. HERO
   ============================================================ */

.hero {
    min-height: 100svh; /* svh para suporte mobile correto */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: clamp(90px, 12vw, 120px) clamp(16px, 4vw, 32px) 60px;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-mid) 50%, var(--bg-dark) 100%);
    position: relative;
    overflow: hidden;
}

/* Orbes decorativos — usando transform3d para GPU */
.hero::before,
.hero::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    will-change: transform;
}

.hero::before {
    top: -20%;
    right: -8%;
    width: clamp(300px, 40vw, 500px);
    height: clamp(300px, 40vw, 500px);
    background: radial-gradient(circle, rgba(0, 102, 255, 0.10) 0%, transparent 70%);
    animation: floatOrb 6s ease-in-out infinite;
}

.hero::after {
    bottom: -20%;
    left: -5%;
    width: clamp(240px, 32vw, 400px);
    height: clamp(240px, 32vw, 400px);
    background: radial-gradient(circle, rgba(0, 212, 255, 0.10) 0%, transparent 70%);
    animation: floatOrb 8s ease-in-out infinite reverse;
}

@keyframes floatOrb {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(30px); }
}

/* Grid hero */
.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(2rem, 5vw, 4rem);
    align-items: center;
    position: relative;
    z-index: 1;
    max-width: 1200px;
    width: 100%;
}

/* Texto */
.hero-title {
    font-size: clamp(2rem, 4.5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: slideUp 0.8s ease-out both;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.4rem);
    color: var(--clr-accent);
    margin-bottom: 1rem;
    font-weight: 600;
    animation: slideUp 0.8s ease-out 0.1s both;
}

.hero-description {
    font-size: clamp(0.95rem, 1.5vw, 1.1rem);
    color: var(--txt-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
    animation: slideUp 0.8s ease-out 0.2s both;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(28px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* Botões hero */
.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    animation: slideUp 0.8s ease-out 0.3s both;
}

/* Botões genéricos */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
    border: 2px solid transparent;
    cursor: pointer;
    /* Evitar tremer no transform com subpixel */
    backface-visibility: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
    color: #fff;
    box-shadow: 0 6px 24px rgba(0, 102, 255, 0.30);
    border-color: transparent;
}

.btn-primary:hover,
.btn-primary:focus-visible {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0, 102, 255, 0.48);
}

.btn-secondary {
    background: transparent;
    color: var(--clr-secondary);
    border-color: var(--clr-secondary);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
    background: rgba(0, 212, 255, 0.10);
    transform: translateY(-3px);
}

/* Avatar */
.hero-avatar {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: slideRight 0.8s ease-out both;
}

@keyframes slideRight {
    from { opacity: 0; transform: translateX(40px); }
    to   { opacity: 1; transform: translateX(0); }
}

.avatar-circle {
    width: clamp(200px, 25vw, 300px);
    height: clamp(200px, 25vw, 300px);
    position: relative;
}

/* Anel giratório decorativo via pseudo — imagem fica estática */
.avatar-circle::before {
    content: '';
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    background: conic-gradient(
        var(--clr-primary) 0deg,
        var(--clr-secondary) 180deg,
        transparent 220deg,
        var(--clr-primary) 360deg
    );
    animation: spinRing 12s linear infinite;
    will-change: transform;
}

@keyframes spinRing {
    to { transform: rotate(360deg); }
}

.avatar-circle::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: var(--bg-dark);
    margin: 4px;
}

.avatar-circle img {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    filter: drop-shadow(0 0 24px rgba(0, 102, 255, 0.30));
    margin: 4px;
    width: calc(100% - 8px);
    height: calc(100% - 8px);
    inset: 4px;
    position: absolute;
}

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--txt-secondary);
    font-size: 0.85rem;
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50%       { transform: translateX(-50%) translateY(8px); }
}

.scroll-arrow {
    width: 20px;
    height: 30px;
    border: 2px solid var(--clr-primary);
    border-radius: 10px;
    position: relative;
}

.scroll-arrow::after {
    content: '';
    position: absolute;
    top: 7px;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 8px;
    background: var(--clr-primary);
    border-radius: 1px;
    animation: scrollDot 1.5s ease-out infinite;
}

@keyframes scrollDot {
    0%   { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(10px); }
}

/* ============================================================
   6. TÍTULOS DE SEÇÃO
   ============================================================ */

.section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    font-weight: 800;
    text-align: center;
    margin-bottom: clamp(2.5rem, 5vw, 4rem);
    background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================================
   7. SOBRE MIM
   ============================================================ */

.sobre {
    padding-block: var(--section-py);
    background: linear-gradient(135deg, var(--bg-mid) 0%, var(--bg-dark) 100%);
}

.sobre-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(2rem, 5vw, 4rem);
    align-items: start;
}

.sobre-text {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.sobre-text p {
    font-size: clamp(0.95rem, 1.5vw, 1.1rem);
    color: var(--txt-secondary);
    line-height: 1.8;
}

.sobre-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

/* Card */
.card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: clamp(1.25rem, 3vw, 2rem);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    inset-block-start: 0;
    inset-inline: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--clr-primary), var(--clr-secondary));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.card:hover::before { transform: scaleX(1); }

.card:hover {
    background: rgba(15, 23, 42, 0.90);
    border-color: var(--clr-primary);
    transform: translateY(-5px);
}

.card-icon {
    font-size: 2.2rem;
    margin-bottom: 0.75rem;
    line-height: 1;
}

.card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--clr-primary);
}

.card p {
    color: var(--txt-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ============================================================
   8. HABILIDADES
   ============================================================ */

.habilidades {
    padding-block: var(--section-py);
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-mid) 100%);
}

.habilidades-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(2rem, 5vw, 4rem);
}

.skill-category h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1.75rem;
    color: var(--clr-primary);
}

.skill-item {
    margin-bottom: 1.75rem;
}

.skill-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.skill-name { font-weight: 600; color: var(--txt-primary); }

.skill-percentage {
    font-size: 0.85rem;
    color: var(--clr-secondary);
    font-weight: 600;
}

.progress-bar {
    width: 100%;
    height: 7px;
    background: var(--bg-deep);
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.progress-fill {
    height: 100%;
    width: 0; /* Inicia em 0 — JS anima via IntersectionObserver */
    background: linear-gradient(90deg, var(--clr-primary), var(--clr-secondary));
    border-radius: 10px;
    transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: width;
}

/* ============================================================
   9. ESTATÍSTICAS
   ============================================================ */

.estatisticas {
    padding-block: clamp(60px, 8vw, 80px);
    background: linear-gradient(135deg, var(--bg-mid) 0%, var(--bg-dark) 100%);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
}

.stat-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: clamp(1.25rem, 3vw, 2rem);
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    background: rgba(15, 23, 42, 0.90);
    border-color: var(--clr-primary);
    transform: translateY(-5px);
}

.stat-number {
    font-size: clamp(2.2rem, 4vw, 3rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    display: block;
    /* Evita CLS durante contagem */
    min-width: 2ch;
}

.stat-label {
    color: var(--txt-secondary);
    font-size: 0.95rem;
}

/* ============================================================
   10. PROJETOS
   ============================================================ */

.projetos {
    padding-block: var(--section-py);
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-mid) 100%);
}

.projetos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.75rem;
}

.projeto-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.projeto-card:hover {
    background: rgba(15, 23, 42, 0.92);
    border-color: var(--clr-primary);
    transform: translateY(-8px);
    box-shadow: 0 16px 40px rgba(0, 102, 255, 0.18);
}

/* Imagem / placeholder */
.projeto-image {
    width: 100%;
    height: 180px;
    overflow: hidden;
}

.image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-placeholder svg {
    width: 100%;
    height: 100%;
    display: block;
}

/* Conteúdo do card */
.projeto-content {
    padding: 1.25rem 1.5rem 1.5rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.projeto-content h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--clr-primary);
    font-weight: 700;
}

.projeto-content > p {
    color: var(--txt-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    line-height: 1.65;
    flex: 1;
}

/* Tech tags (ul > li) */
.projeto-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1rem;
}

.tech-tag {
    background: rgba(0, 102, 255, 0.18);
    color: var(--clr-secondary);
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    border: 1px solid var(--border-color);
    letter-spacing: 0.02em;
}

/* Botões do projeto */
.projeto-buttons {
    display: flex;
    gap: 0.75rem;
}

.btn-small {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 7px 14px;
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition);
    flex: 1;
    text-align: center;
    cursor: pointer;
    border: 1px solid transparent;
}

.btn-github {
    background: transparent;
    color: var(--clr-primary);
    border-color: var(--clr-primary);
}

.btn-github:hover,
.btn-github:focus-visible {
    background: var(--clr-primary);
    color: #fff;
}

.btn-demo {
    background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
    color: #fff;
    border-color: transparent;
}

.btn-demo:hover,
.btn-demo:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 102, 255, 0.30);
}

/* ============================================================
   11. FORMAÇÃO
   ============================================================ */

.formacao {
    padding-block: var(--section-py);
    background: linear-gradient(135deg, var(--bg-mid) 0%, var(--bg-dark) 100%);
}

.formacao-timeline {
    max-width: 640px;
    margin-inline: auto;
}

.timeline-item {
    display: flex;
    gap: 1.75rem;
    position: relative;
    padding-bottom: 2rem;
}

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

/* Linha vertical */
.timeline-item::before {
    content: '';
    position: absolute;
    left: 19px;
    top: 48px;
    width: 2px;
    height: calc(100% - 28px);
    background: linear-gradient(180deg, var(--clr-primary), transparent);
    pointer-events: none;
}

.timeline-item:last-child::before { display: none; }

.timeline-marker {
    width: 40px;
    height: 40px;
    min-width: 40px;
    background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
    border-radius: 50%;
    border: 3px solid var(--bg-dark);
    box-shadow: 0 0 18px rgba(0, 102, 255, 0.30);
}

.timeline-content {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 1.5rem 1.75rem;
    flex: 1;
}

.timeline-content h3 {
    font-size: 1.2rem;
    margin-bottom: 0.4rem;
    color: var(--clr-primary);
}

.timeline-status {
    color: var(--clr-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.timeline-description {
    color: var(--txt-secondary);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* ============================================================
   12. CONTATO
   ============================================================ */

.contato {
    padding-block: var(--section-py);
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-mid) 100%);
}

.contato-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(2rem, 5vw, 4rem);
    align-items: start;
}

.contato-info h3 {
    font-size: 1.7rem;
    margin-bottom: 1rem;
    color: var(--clr-primary);
    font-weight: 700;
}

.contato-info > p {
    color: var(--txt-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.contato-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.85rem;
}

.contato-link {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.9rem 1rem;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--txt-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.contato-link:hover,
.contato-link:focus-visible {
    background: rgba(15, 23, 42, 0.92);
    border-color: var(--clr-primary);
    color: var(--clr-primary);
    transform: translateY(-2px);
}

.link-icon { font-size: 1.3rem; line-height: 1; }

/* Formulário */
.contato-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-group label {
    color: var(--txt-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

.required { color: #ff5a5a; }

.form-group input,
.form-group textarea {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 11px 15px;
    color: var(--txt-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
    /* Evita zoom iOS */
    font-size: max(16px, 1rem);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(176, 185, 212, 0.50);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--clr-primary);
    background: rgba(15, 23, 42, 0.92);
    box-shadow: 0 0 18px rgba(0, 102, 255, 0.20);
}

/* Validação visual */
.form-group input:invalid:not(:placeholder-shown),
.form-group textarea:invalid:not(:placeholder-shown) {
    border-color: #ff5a5a;
}

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

/* Erro de formulário */
.form-error {
    background: rgba(255, 90, 90, 0.12);
    border: 1px solid rgba(255, 90, 90, 0.40);
    border-radius: 8px;
    padding: 10px 14px;
    color: #ff8585;
    font-size: 0.9rem;
}

/* ============================================================
   13. FOOTER
   ============================================================ */

.footer {
    background: linear-gradient(135deg, var(--bg-mid) 0%, var(--bg-dark) 100%);
    border-top: 1px solid var(--border-color);
    padding: clamp(2rem, 4vw, 3rem) clamp(16px, 4vw, 32px) 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin-inline: auto;
    margin-bottom: 2rem;
}

.footer-section h4 {
    color: var(--clr-primary);
    margin-bottom: 0.75rem;
    font-size: 1.05rem;
}

.footer-section p {
    color: var(--txt-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
}

.social-links {
    display: flex;
    gap: 0.75rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--clr-primary);
    transition: var(--transition);
}

.social-links a:hover,
.social-links a:focus-visible {
    background: var(--clr-primary);
    color: #fff;
    border-color: var(--clr-primary);
    transform: translateY(-2px);
}

.footer-bottom {
    max-width: 1200px;
    margin-inline: auto;
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    color: var(--txt-secondary);
    font-size: 0.88rem;
}

/* ============================================================
   14. ANIMAÇÕES DE SCROLL (fade-in via JS)
   ============================================================ */

.will-animate {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.will-animate.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================================
   15. RESPONSIVIDADE
   ============================================================ */

/* Tablet e abaixo */
@media (max-width: 900px) {
    .sobre-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .habilidades-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .contato-content {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
}

/* Mobile */
@media (max-width: 768px) {
    /* Nav mobile */
    .hamburger { display: flex; }

    .nav-menu {
        position: fixed;
        left: 0;
        top: 70px;
        width: 100%;
        height: calc(100vh - 70px);
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        background: var(--bg-mid);
        padding-block: 2rem;
        gap: 0;
        transform: translateX(-100%);
        transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        overflow-y: auto;
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .nav-menu li { width: 100%; }

    .nav-link {
        display: block;
        padding: 1.2rem 2rem;
        border-bottom: 1px solid var(--border-color);
        font-size: 1.05rem;
    }

    .nav-link::after { display: none; }

    /* Hero */
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-avatar { order: -1; }

    /* Cards sobre */
    .sobre-cards {
        grid-template-columns: 1fr;
    }

    /* Stats */
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Projetos */
    .projetos-grid {
        grid-template-columns: 1fr;
    }

    /* Contato links */
    .contato-links {
        grid-template-columns: 1fr;
    }

    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* Pequenos smartphones */
@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .projeto-buttons {
        flex-direction: column;
    }

    .btn-small {
        flex: unset;
        width: 100%;
    }

    .sobre-cards {
        grid-template-columns: 1fr;
    }
}