/* ============================================
   Vinícius Desenvolvedor - CSS
   Paleta: Azul dev, cinza escuro, verde terminal
   Fontes: JetBrains Mono + DM Sans
   ============================================ */

:root {
    --color-primary: #2563eb;
    --color-secondary: #1f2937;
    --color-accent: #22c55e;
    --color-bg: #0f172a;
    --color-bg-card: #1e293b;
    --color-bg-alt: #1a2332;
    --color-text: #cbd5e1;
    --color-text-light: #94a3b8;
    --color-text-white: #f1f5f9;
    --color-border: #334155;
    --color-code-bg: #0d1117;
    --font-heading: 'JetBrains Mono', 'Courier New', monospace;
    --font-body: 'DM Sans', 'Segoe UI', sans-serif;
    --max-width: 1100px;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.2);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.3);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.4);
    --radius: 8px;
    --transition: 0.3s ease;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent); }
img { max-width: 100%; height: auto; }

/* ---- HEADER ---- */
.site-header {
    background: var(--color-secondary);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--color-border);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 4px;
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-text-white);
}

.logo-bracket { color: var(--color-accent); font-weight: 400; }
.logo-dot { color: var(--color-primary); }

.nav-list { list-style: none; display: flex; gap: 24px; }
.nav-list a {
    color: var(--color-text-light);
    font-weight: 500;
    font-size: 0.88rem;
    font-family: var(--font-heading);
    transition: color var(--transition);
}
.nav-list a:hover { color: var(--color-accent); }

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}
.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-white);
    transition: var(--transition);
}

/* ---- HERO ---- */
.hero {
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
    color: var(--color-text-white);
    padding: 80px 0 60px;
    text-align: center;
    position: relative;
}

.hero-badge {
    display: inline-block;
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-accent);
    padding: 6px 16px;
    border-radius: var(--radius);
    font-family: var(--font-heading);
    font-size: 0.82rem;
    margin-bottom: 20px;
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.hero h1 {
    font-family: var(--font-body);
    font-size: 2.3rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 18px;
    color: var(--color-text-white);
}

.hero-subtitle {
    font-size: 1.05rem;
    color: var(--color-text-light);
    max-width: 650px;
    margin: 0 auto 30px;
    line-height: 1.8;
}

/* ---- TERMINAL ---- */
.hero-terminal {
    max-width: 500px;
    margin: 0 auto;
    background: var(--color-code-bg);
    border-radius: var(--radius);
    overflow: hidden;
    text-align: left;
    border: 1px solid var(--color-border);
}

.terminal-header {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 14px;
    background: var(--color-border);
}

.terminal-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.terminal-dot.red { background: #ef4444; }
.terminal-dot.yellow { background: #eab308; }
.terminal-dot.green { background: #22c55e; }

.terminal-title {
    color: var(--color-text-light);
    font-family: var(--font-heading);
    font-size: 0.75rem;
    margin-left: 8px;
}

.terminal-body {
    padding: 16px;
    font-family: var(--font-heading);
    font-size: 0.82rem;
    line-height: 1.8;
}

.terminal-body code {
    display: block;
    color: var(--color-text);
}

.prompt { color: var(--color-accent); }
.cmd { color: var(--color-primary); }
.cursor {
    color: var(--color-accent);
    animation: blink 1s step-end infinite;
}

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

/* ---- SECTIONS ---- */
.content-section { padding: 60px 0; }
.content-section.alt-bg { background: var(--color-bg-alt); }

.content-section h2 {
    font-family: var(--font-heading);
    font-size: 1.7rem;
    color: var(--color-text-white);
    margin-bottom: 28px;
    position: relative;
    padding-bottom: 12px;
}

.content-section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--color-accent);
}

.content-section h3 {
    font-family: var(--font-body);
    font-size: 1.2rem;
    color: var(--color-text-white);
    margin-top: 35px;
    margin-bottom: 14px;
}

.content-section p { margin-bottom: 18px; font-size: 1rem; }

/* ---- SKILLS ---- */
.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.skill-tag {
    background: var(--color-bg-card);
    color: var(--color-accent);
    padding: 8px 18px;
    border-radius: var(--radius);
    font-family: var(--font-heading);
    font-size: 0.82rem;
    border: 1px solid var(--color-border);
    transition: border-color var(--transition), background var(--transition);
}

.skill-tag:hover {
    border-color: var(--color-accent);
    background: rgba(34, 197, 94, 0.08);
}

/* ---- CARDS ---- */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 10px;
}

.card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 28px 24px;
    transition: transform var(--transition), border-color var(--transition);
}

.card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
}

.card-icon { font-size: 2.2rem; margin-bottom: 14px; }
.card h3 {
    font-family: var(--font-body);
    color: var(--color-text-white);
    margin-top: 0;
    margin-bottom: 12px;
    font-size: 1.05rem;
}

.card p { color: var(--color-text-light); font-size: 0.93rem; margin-bottom: 16px; }

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.card-tags span {
    background: rgba(37, 99, 235, 0.15);
    color: var(--color-primary);
    padding: 4px 10px;
    border-radius: 4px;
    font-family: var(--font-heading);
    font-size: 0.72rem;
}

/* ---- CTA ---- */
.cta-section {
    background: var(--color-secondary);
    color: var(--color-text-white);
    text-align: center;
    padding: 60px 0;
    border-top: 1px solid var(--color-border);
}

.cta-section h2 {
    color: var(--color-text-white);
    font-family: var(--font-body);
}

.cta-section h2::after { background: var(--color-accent); }

.cta-section p {
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto 30px;
}

.cta-button {
    display: inline-block;
    background: var(--color-accent);
    color: var(--color-secondary);
    padding: 14px 36px;
    border-radius: var(--radius);
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    transition: background var(--transition), transform var(--transition);
}

.cta-button:hover {
    background: #16a34a;
    transform: translateY(-2px);
}

/* ---- FOOTER ---- */
.site-footer {
    background: #020617;
    color: var(--color-text-white);
    padding: 40px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

.footer-brand {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: var(--color-accent);
    margin-bottom: 10px;
}

.footer-col p { color: var(--color-text-light); font-size: 0.9rem; }
.footer-heading {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    color: var(--color-accent);
    margin-bottom: 12px;
}

.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul a { color: var(--color-text-light); font-size: 0.88rem; }
.footer-col ul a:hover { color: var(--color-accent); }

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: 20px;
    text-align: center;
}

.footer-bottom p { color: #475569; font-size: 0.82rem; }

/* ---- WHATSAPP ---- */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    background: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: transform var(--transition);
}

.whatsapp-float:hover { transform: scale(1.08); }

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
    .menu-toggle { display: flex; }
    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-secondary);
        padding: 80px 30px 30px;
        transition: right var(--transition);
        box-shadow: var(--shadow-lg);
    }
    .main-nav.open { right: 0; }
    .nav-list { flex-direction: column; gap: 18px; }
    .nav-list a { font-size: 0.95rem; }

    .hero { padding: 50px 0 40px; }
    .hero h1 { font-size: 1.6rem; }
    .hero-subtitle { font-size: 0.95rem; }
    .content-section h2 { font-size: 1.35rem; }
    .content-section h3 { font-size: 1.05rem; }
    .footer-grid { grid-template-columns: 1fr; gap: 20px; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.35rem; }
    .cards-grid { grid-template-columns: 1fr; }
    .hero-terminal { margin-left: -10px; margin-right: -10px; border-radius: 0; }
}