:root {
    --bg-color: #05060a;
    --bg-elevated: #0f1016;
    --bg-elevated-soft: #181a24;
    --text-color: #f5f5f5;
    --muted-color: #a0a4b8;
    --accent: #4f8bff;
    --accent-soft: rgba(79, 139, 255, 0.15);
    --border-color: #272938;
    --radius-lg: 18px;
    --radius-md: 12px;
    --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.45);
    --font-main: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --transition-base: 0.2s ease;
}

/* Modo Claro - Preferência do Sistema */
@media (prefers-color-scheme: light) {
    :root {
        --bg-color: #fafafa;
        --bg-elevated: #ffffff;
        --bg-elevated-soft: #f0f1f5;
        --text-color: #111827;
        --muted-color: #4b5563;
        --accent: #2563eb;
        --border-color: #e5e7eb;
        --shadow-soft: 0 16px 40px rgba(15, 23, 42, 0.12);
    }
    body {
        background: var(--bg-color);
    }
    .site-header {
        background: linear-gradient(to bottom, rgba(250, 250, 250, 0.95), rgba(250, 250, 250, 0.7));
        border-bottom: 1px solid var(--border-color);
    }
}

/* Modo Claro - Ativação Manual */
body.theme-light {
    --bg-color: #fafafa;
    --bg-elevated: #ffffff;
    --bg-elevated-soft: #f0f1f5;
    --text-color: #111827;
    --muted-color: #4b5563;
    --accent: #2563eb;
    --border-color: #e5e7eb;
    --shadow-soft: 0 16px 40px rgba(15, 23, 42, 0.12);
    background: var(--bg-color);
}

body.theme-light .site-header {
    background: linear-gradient(to bottom, rgba(250, 250, 250, 0.95), rgba(250, 250, 250, 0.7));
    border-bottom: 1px solid var(--border-color);
}

/* Reset e Base */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--font-main);
    background: radial-gradient(circle at top left, #141824, #05060a 55%, #020308); 
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
}

/* Skip to Content (Acessibilidade) */
.skip-to-content {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--accent);
    color: white;
    padding: 0.5rem 1rem;
    text-decoration: none;
    z-index: 100;
}

.skip-to-content:focus {
    top: 0;
}

/* Container Responsivo */
.container {
    width: 100%;
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(14px);
    background: linear-gradient(to bottom, rgba(5,6,10,0.95), rgba(5,6,10,0.7));
    border-bottom: 1px solid rgba(255,255,255,0.04);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.9rem 0;
    position: relative;
}

/* Logo */
.logo {
    display: flex;
    align-items: baseline;
    gap: 0.45rem;
    z-index: 51;
}

.logo-mark {
    padding: 0.18rem 0.6rem;
    border-radius: 999px;
    background: var(--accent-soft);
    border: 1px solid rgba(79,139,255,0.6);
    font-size: 0.85rem;
}

.logo-text {
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    font-size: 0.85rem;
    color: var(--muted-color);
}

/* Navegação Desktop */
.main-nav {
    display: flex;
    gap: 0.2rem;
}

.main-nav a {
    padding: 0.5rem 1rem;
    text-decoration: none;
    font-size: 0.95rem;
    color: var(--muted-color);
    position: relative;
    border-radius: 8px;
    transition: all var(--transition-base);
}

.main-nav a:hover,
.main-nav a:focus {
    color: var(--text-color);
    background: var(--bg-elevated-soft);
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.main-nav a.active {
    color: var(--text-color);
    background: var(--accent-soft);
}

/* Menu Mobile Toggle */
.mobile-menu-toggle {
    display: none;
    background: var(--bg-elevated-soft);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.5rem;
    cursor: pointer;
    z-index: 51;
    transition: all var(--transition-base);
}

.mobile-menu-toggle:hover,
.mobile-menu-toggle:focus {
    background: var(--accent-soft);
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.hamburger {
    display: flex;
    flex-direction: column;
    gap: 4px;
    width: 24px;
}

.hamburger span {
    display: block;
    height: 2px;
    background: var(--text-color);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.mobile-menu-toggle.active .hamburger span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active .hamburger span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active .hamburger span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Botão de Tema */
.theme-toggle {
    border: 1px solid var(--border-color);
    background: var(--bg-elevated-soft);
    border-radius: 999px;
    padding: 0.4rem 0.7rem;
    cursor: pointer;
    color: var(--text-color);
    font-size: 1.1rem;
    transition: all var(--transition-base);
}

.theme-toggle:hover,
.theme-toggle:focus {
    background: var(--accent-soft);
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    transform: scale(1.05);
}

/* Main Content */
.site-main {
    padding: 2rem 0 4rem;
    min-height: calc(100vh - 200px);
}

/* Hero Section */
.hero {
    padding: 1.5rem 0 3rem;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.4fr);
    gap: 3rem;
    align-items: center;
}

.hero-left {
    display: flex;
    justify-content: center;
}

/* ==========================================
   FOTO DE PERFIL - VERSÃO FINAL OTIMIZADA
   ========================================== */
.profile-photo {
    position: relative;
    width: 260px;
    height: 260px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 24px;
    background: radial-gradient(
        circle at 35% 35%, 
        rgba(254, 255, 255, 0), 
        transparent 65%
    );
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.profile-photo::before {
    content: '';
    position: absolute;
    inset: 0.2px;
    border-radius: 24px;
    background: linear-gradient(
        135deg,
        rgba(248, 248, 248, 0),
        transparent 40%,
        rgba(79, 138, 255, 0)
    );
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
}

.profile-photo:hover::before {
    opacity: 1;
}

.profile-photo img {
    width: 105%;
    height: 105%;
    object-fit: contain;
    object-position: center;
    filter: drop-shadow(0 12px 30px rgba(0, 0, 0, 0));
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.profile-photo:hover {
    transform: translateY(-12px) scale(1.03);
    background: radial-gradient(
        circle at 35% 35%, 
        rgba(79, 138, 255, 0.055), 
        transparent 65%
    );
}

.profile-photo:hover img {
    transform: scale(1.08);
    filter: drop-shadow(0 20px 50px rgba(79, 139, 255, 0.4))
            drop-shadow(0 8px 20px rgba(0, 0, 0, 0.3));
}

/* Proteções CSS da imagem */
.protected-image {
    display: block;
    pointer-events: none;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    -webkit-user-drag: none;
    -khtml-user-drag: none;
    -moz-user-drag: none;
    -o-user-drag: none;
}

/* Overlay de proteção */
.protection-overlay {
    position: absolute;
    inset: 0;
    background: transparent;
    z-index: 10;
    cursor: default;
}

.hero-right h1 {
    font-size: 2.2rem;
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.hero-right h2 {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--muted-color);
    margin-top: 0;
    margin-bottom: 1rem;
}

.hero-typing {
    margin: 1.2rem 0 1.8rem;
    font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 1rem;
    color: var(--accent);
    min-height: 1.5em;
}

.typing-cursor {
    display: inline-block;
    width: 2px;
    height: 1em;
    background: var(--accent);
    margin-left: 2px;
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    50% { opacity: 0; }
}

.hero-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* Botões */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.3rem;
    border-radius: 999px;
    font-size: 0.95rem;
    font-weight: 500;
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-base);
}

.btn:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.btn.primary {
    background: var(--accent);
    color: #fff;
    border-color: rgba(255,255,255,0.1);
}

.btn.primary:hover {
    background: #3d7ae8;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(79, 139, 255, 0.3);
}

.btn.outline {
    background: transparent;
    color: var(--text-color);
    border-color: var(--border-color);
}

.btn.outline:hover {
    background: var(--bg-elevated-soft);
    border-color: var(--accent);
}

/* Painéis */
.highlight-panel {
    margin-top: 2rem;
}

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

.highlight-block {
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    padding: 1.3rem 1.4rem;
    box-shadow: var(--shadow-soft);
    transition: all var(--transition-base);
}

.highlight-block:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    border-color: var(--accent);
}

.highlight-block h3 {
    margin-top: 0;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    color: var(--accent);
}

/* Page Section */
.page-section {
    padding: 2rem 0 3rem;
}

.page-section h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.page-section h2 {
    font-size: 1.5rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

/* Two Columns */
.two-columns {
    display: grid;
    gap: 3rem;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* Lists */
.tag-list {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag-list li {
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    border: 1px solid var(--border-color);
    background: var(--bg-elevated-soft);
    font-size: 0.85rem;
    transition: all var(--transition-base);
}

.tag-list li:hover {
    background: var(--accent-soft);
    border-color: var(--accent);
}

.simple-list {
    padding-left: 1.2rem;
    font-size: 0.95rem;
    line-height: 1.8;
}

.simple-list li {
    margin-bottom: 0.5rem;
}

/* Projetos */
.section-intro {
    max-width: 680px;
    color: var(--muted-color);
    font-size: 1.05rem;
    margin-bottom: 2rem;
}

.projects-grid {
    margin-top: 2rem;
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}

.project-card {
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    box-shadow: var(--shadow-soft);
    transition: all var(--transition-base);
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    border-color: var(--accent);
}

.project-card h2 {
    margin-top: 0;
    margin-bottom: 0.8rem;
    font-size: 1.15rem;
    line-height: 1.4;
}

.project-card p {
    color: var(--muted-color);
    margin-bottom: 1rem;
}

.project-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.project-card ul li {
    padding: 0.25rem 0.6rem;
    background: var(--accent-soft);
    border: 1px solid rgba(79,139,255,0.3);
    border-radius: 999px;
    font-size: 0.8rem;
}

/* Links dos Projetos */
.project-links {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.project-links .btn {
    flex: 1;
    min-width: 140px;
    text-align: center;
    font-size: 0.9rem;
    padding: 0.65rem 1.2rem;
}

.project-links .btn.primary {
    background: var(--accent);
    color: white;
}

.project-links .btn.outline {
    background: transparent;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.project-links .btn:hover {
    transform: translateY(-2px);
}

.project-links .btn.primary:hover {
    box-shadow: 0 8px 20px rgba(79, 139, 255, 0.3);
}

.project-links .btn.outline:hover {
    border-color: var(--accent);
    background: var(--accent-soft);
}

/* Contato */
.contact-grid {
    display: grid;
    gap: 3rem;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-form label {
    display: block;
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: 0.3rem;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    margin-top: 0.3rem;
    padding: 0.6rem 0.8rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: var(--bg-elevated-soft);
    color: var(--text-color);
    font-size: 0.95rem;
    font-family: inherit;
    transition: all var(--transition-base);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: 2px solid var(--accent);
    outline-offset: 0;
    border-color: var(--accent);
    background: var(--bg-elevated);
}

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

.contact-form .error {
    color: #ef4444;
    font-size: 0.85rem;
    margin-top: 0.25rem;
}

.feedback {
    margin-bottom: 1rem;
    padding: 0.75rem 1rem;
    border-radius: 10px;
    background: var(--accent-soft);
    border: 1px solid rgba(79,139,255,0.5);
    font-size: 0.95rem;
}

.feedback.error {
    background: rgba(239, 68, 68, 0.1);
    border-color: #ef4444;
    color: #ef4444;
}

/* Footer */
.site-footer {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 2rem 0;
    margin-top: 3rem;
    font-size: 0.9rem;
    color: var(--muted-color);
}

.footer-content {
    text-align: center;
}

.footer-content p {
    margin: 0.5rem 0;
}

.footer-links a {
    color: var(--muted-color);
    text-decoration: none;
    transition: color var(--transition-base);
}

.footer-links a:hover,
.footer-links a:focus {
    color: var(--accent);
    text-decoration: underline;
}

/* ==========================================
   RESPONSIVIDADE COMPLETA
   ========================================== */

/* Desktop Grande (1440px+) */
@media (min-width: 1440px) {
    .container {
        max-width: 1280px;
    }
    
    .hero-grid {
        gap: 4rem;
    }
    
    .profile-photo {
        width: 300px;
        height: 300px;
    }
    
    .hero-right h1 {
        font-size: 2.5rem;
    }
}

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) and (min-width: 769px) {
    .hero-grid {
        gap: 2rem;
    }
    
    .profile-photo {
        width: 220px;
        height: 220px;
    }
    
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile e Tablet Pequeno (até 768px) */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    .site-main {
        padding: 1.5rem 0 2rem;
    }
    
    .page-section {
        padding: 1.5rem 0 2rem;
    }
    
    /* Header Mobile */
    .header-content {
        padding: 0.7rem 0;
    }
    
    .logo-text {
        font-size: 0.75rem;
    }
    
    /* Menu Mobile */
    .mobile-menu-toggle {
        display: flex;
    }
    
    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--bg-elevated);
        border-left: 1px solid var(--border-color);
        flex-direction: column;
        padding: 5rem 1.5rem 2rem;
        gap: 0;
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
        transition: right 0.3s ease;
        z-index: 40;
    }
    
    .main-nav.active {
        right: 0;
    }
    
    .main-nav a {
        padding: 1rem;
        font-size: 1.1rem;
        border-radius: 8px;
    }
    
    /* Overlay para fechar menu */
    .mobile-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.7);
        z-index: 30;
    }
    
    .mobile-overlay.active {
        display: block;
    }
    
    /* Hero Mobile */
    .hero {
        padding: 1rem 0 2rem;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        text-align: center;
    }
    
    .profile-photo {
        width: 200px;
        height: 200px;
        margin: 0 auto;
    }
    
    .hero-right h1 {
        font-size: 1.75rem;
    }
    
    .hero-right h2 {
        font-size: 1rem;
    }
    
    .hero-typing {
        font-size: 0.9rem;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    /* Grids Mobile */
    .highlight-grid {
        grid-template-columns: 1fr;
    }
    
    .two-columns,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    /* Tags menores em mobile */
    .tag-list li {
        font-size: 0.8rem;
        padding: 0.3rem 0.6rem;
    }
}

/* Mobile Pequeno (até 480px) */
@media (max-width: 480px) {
    .hero-right h1 {
        font-size: 1.5rem;
    }
    
    .profile-photo {
        width: 180px;
        height: 180px;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .hero-actions {
        width: 100%;
    }
    
    .main-nav {
        width: 100%;
        right: -100%;
    }
}

/* Impressão */
@media print {
    .site-header,
    .site-footer,
    .theme-toggle,
    .mobile-menu-toggle,
    .hero-actions {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
}