/* ============================================================
   Alvaro Gomes — Portfólio
   Tema: dark dev-tools · rede/constelação · acentos azul→roxo
   ============================================================ */

:root {
    --bg:          #070A14;
    --bg-2:        #0A0E1B;
    --surface:     rgba(255, 255, 255, 0.035);
    --surface-2:   rgba(255, 255, 255, 0.06);
    --surface-3:   rgba(255, 255, 255, 0.09);
    --border:      rgba(255, 255, 255, 0.09);
    --border-2:    rgba(255, 255, 255, 0.16);

    --text:        #E9EDF8;
    --muted:       #9BA6C4;
    --faint:       #5E6987;

    --blue:        #2A6FDB;
    --blue-bright: #5B95F5;
    --purple:      #8B5CF6;
    --purple-br:   #A782FF;

    --grad:        linear-gradient(115deg, #5B95F5 0%, #8B5CF6 100%);
    --grad-soft:   linear-gradient(115deg, rgba(42,111,219,0.18), rgba(139,92,246,0.18));

    --radius:      18px;
    --radius-sm:   12px;
    --nav-h:       66px;

    --font-sans:   "Space Grotesk", "Segoe UI", system-ui, sans-serif;
    --font-mono:   "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/*Ambient background layers*/
#bg-canvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.bg-glow {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(620px 520px at 82% 12%, rgba(139,92,246,0.16), transparent 60%),
        radial-gradient(680px 560px at 8% 88%, rgba(42,111,219,0.16), transparent 60%),
        linear-gradient(180deg, #070A14 0%, #080B17 100%);
}

.bg-grid {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(255,255,255,0.022) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.022) 1px, transparent 1px);
    background-size: 54px 54px;
    mask-image: radial-gradient(circle at 50% 40%, #000 30%, transparent 78%);
    -webkit-mask-image: radial-gradient(circle at 50% 40%, #000 30%, transparent 78%);
}

a { color: inherit; }

/* ============================================================
   NAV
   ============================================================ */
.nav {
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    height: var(--nav-h);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 0 clamp(18px, 4vw, 48px);
    background: rgba(8, 11, 22, 0.62);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(16px) saturate(150%);
    -webkit-backdrop-filter: blur(16px) saturate(150%);
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 0.96rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    white-space: nowrap;
}
.brand .dot {
    width: 9px; height: 9px;
    border-radius: 50%;
    background: #34d399;
    box-shadow: 0 0 0 4px rgba(52,211,153,0.16);
    flex-shrink: 0;
}
.brand .accent { color: var(--purple-br); }
.brand .muted { color: var(--faint); }

.nav-tabs {
    display: flex;
    align-items: center;
    gap: 4px;
}
.tab {
    appearance: none;
    background: transparent;
    border: 1px solid transparent;
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    font-weight: 500;
    letter-spacing: 0.01em;
    padding: 8px 14px;
    border-radius: 10px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: color .18s, background .18s, border-color .18s;
}
.tab i { font-size: 0.86rem; opacity: 0.85; }
.tab:hover { color: var(--text); background: var(--surface); }
.tab.active {
    color: var(--text);
    background: var(--surface-2);
    border-color: var(--border-2);
}
.tab .tab-num { color: var(--purple-br); opacity: 0.8; }

.nav-right { display: flex; align-items: center; gap: 14px; }

.lang-toggle {
    display: inline-flex;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 3px;
    font-family: var(--font-mono);
}
.lang-toggle button {
    appearance: none;
    background: transparent;
    border: none;
    color: var(--faint);
    font-family: inherit;
    font-size: 0.74rem;
    font-weight: 600;
    padding: 5px 10px;
    border-radius: 7px;
    cursor: pointer;
    transition: color .18s, background .18s;
}
.lang-toggle button.active {
    color: #fff;
    background: var(--grad);
}

.nav-toggle {
    display: none;
    appearance: none;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text);
    width: 40px; height: 40px;
    border-radius: 10px;
    font-size: 1rem;
    cursor: pointer;
}

/* ============================================================
   LAYOUT / SECTIONS
   ============================================================ */
.main {
    position: relative;
    z-index: 2;
    padding-top: var(--nav-h);
}

.section {
    display: none;
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: clamp(28px, 5vw, 64px) clamp(20px, 4vw, 48px) 80px;
}
.section.active { display: block; }

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--muted);
    letter-spacing: 0.02em;
}
.eyebrow .pulse {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: #34d399;
    box-shadow: 0 0 0 0 rgba(52,211,153,0.5);
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0%   { box-shadow: 0 0 0 0 rgba(52,211,153,0.45); }
    70%  { box-shadow: 0 0 0 9px rgba(52,211,153,0); }
    100% { box-shadow: 0 0 0 0 rgba(52,211,153,0); }
}

.section-head {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 38px;
}
.section-head .kicker {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--purple-br);
    letter-spacing: 0.02em;
}
.section-title {
    font-size: clamp(1.9rem, 4vw, 2.7rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin: 0;
    line-height: 1.05;
}
.section-sub {
    color: var(--muted);
    font-size: 0.98rem;
    max-width: 60ch;
}

/* ============================================================
   HOME
   ============================================================ */
#home {
    min-height: calc(100vh - var(--nav-h));
    display: none;
    align-items: center;
}
#home.active { display: flex; }

.hero {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: clamp(28px, 5vw, 64px);
    align-items: center;
    width: 100%;
}

.hero-left { display: flex; flex-direction: column; gap: 22px; }

.hero h1 {
    font-size: clamp(2.7rem, 6.4vw, 4.4rem);
    line-height: 1.0;
    letter-spacing: -0.035em;
    font-weight: 700;
    margin: 0;
}
.hero h1 .grad {
    background: var(--grad);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-role {
    font-family: var(--font-mono);
    font-size: clamp(1rem, 2.2vw, 1.3rem);
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
    min-height: 1.6em;
}
.hero-role .prompt { color: var(--blue-bright); }
#typing-role { color: var(--text); }
.cursor {
    display: inline-block;
    width: 9px; height: 1.05em;
    background: var(--purple-br);
    translate: 0 2px;
    animation: blink 1s step-end infinite;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

.hero-desc {
    color: var(--muted);
    font-size: 1.04rem;
    line-height: 1.65;
    max-width: 50ch;
}

.chips { display: flex; flex-wrap: wrap; gap: 9px; }
.chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--text);
    padding: 7px 13px;
    border-radius: 9px;
    background: var(--surface);
    border: 1px solid var(--border);
    transition: border-color .2s, background .2s, transform .2s;
}
.chip i { color: var(--blue-bright); font-size: 0.92rem; }
.chip:hover { border-color: var(--border-2); background: var(--surface-2); transform: translateY(-2px); }

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    font-family: var(--font-sans);
    font-size: 0.92rem;
    font-weight: 600;
    padding: 12px 20px;
    border-radius: 11px;
    cursor: pointer;
    text-decoration: none;
    border: 1px solid transparent;
    transition: transform .18s, box-shadow .2s, border-color .2s, background .2s;
}
.btn-primary {
    background: var(--grad);
    color: #fff;
    box-shadow: 0 8px 26px rgba(91,72,200,0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 34px rgba(91,72,200,0.5); }
.btn-ghost {
    background: var(--surface);
    border-color: var(--border-2);
    color: var(--text);
}
.btn-ghost:hover { transform: translateY(-2px); background: var(--surface-2); }

.socials { display: flex; gap: 10px; }
.social {
    width: 44px; height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 11px;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--muted);
    font-size: 1.15rem;
    text-decoration: none;
    transition: color .2s, border-color .2s, transform .2s, background .2s;
}
.social:hover { color: #fff; border-color: var(--border-2); background: var(--surface-2); transform: translateY(-3px); }

/*Terminal card*/
.hero-right { display: flex; justify-content: center; }
.terminal {
    width: 100%;
    max-width: 460px;
    background: linear-gradient(180deg, rgba(13,17,30,0.92), rgba(10,13,24,0.92));
    border: 1px solid var(--border-2);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 30px 80px rgba(0,0,0,0.55), 0 0 0 1px rgba(139,92,246,0.06);
    font-family: var(--font-mono);
    backdrop-filter: blur(6px);
}
.terminal-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 15px;
    background: rgba(255,255,255,0.03);
    border-bottom: 1px solid var(--border);
}
.terminal-bar .tdot { width: 11px; height: 11px; border-radius: 50%; }
.tdot.r { background: #ff5f57; }
.tdot.y { background: #febc2e; }
.tdot.g { background: #28c840; }
.terminal-bar .tname {
    margin-left: 8px;
    font-size: 0.78rem;
    color: var(--faint);
}
.terminal-body {
    padding: 18px 20px 22px;
    font-size: 0.84rem;
    line-height: 1.85;
}
.terminal-body .line { display: block; white-space: pre-wrap; }
.t-comment { color: var(--faint); }
.t-prompt  { color: #34d399; }
.t-key     { color: var(--blue-bright); }
.t-str     { color: #f0b46b; }
.t-kw      { color: var(--purple-br); }
.t-punc    { color: var(--muted); }
.t-fn      { color: #5fd3c4; }

/* ============================================================
   PROJECTS
   ============================================================ */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
    gap: 20px;
}
.project-card {
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform .25s cubic-bezier(.2,.7,.2,1), border-color .25s, box-shadow .25s;
    position: relative;
}
.project-card::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1px;
    background: var(--grad);
    -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity .25s;
    pointer-events: none;
}
.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 22px 50px rgba(0,0,0,0.45);
}
.project-card:hover::before { opacity: 1; }

.project-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border);
    background: rgba(255,255,255,0.02);
}
.project-path {
    font-family: var(--font-mono);
    font-size: 0.76rem;
    color: var(--faint);
    display: flex;
    align-items: center;
    gap: 8px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.project-path i { color: var(--blue-bright); }
.project-id {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: var(--purple-br);
    padding: 3px 9px;
    border-radius: 7px;
    border: 1px solid rgba(139,92,246,0.3);
    background: rgba(139,92,246,0.08);
    white-space: nowrap;
}
.project-body {
    padding: 20px 18px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1;
}
.project-name {
    font-size: 1.22rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}
.project-desc {
    color: var(--muted);
    font-size: 0.92rem;
    line-height: 1.6;
    flex: 1;
}
.project-desc a {
    color: var(--blue-bright);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 1px solid rgba(91,149,245,0.35);
    transition: color .2s, border-color .2s;
}
.project-desc a:hover { color: var(--purple-br); border-color: var(--purple-br); }
.project-tags { display: flex; flex-wrap: wrap; gap: 7px; }
.ptag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--muted);
    padding: 4px 9px;
    border-radius: 7px;
    background: var(--surface-2);
    border: 1px solid var(--border);
}

/* ============================================================
   EXPERIENCE
   ============================================================ */
.exp-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 32px;
    align-items: start;
}
.exp-profile {
    position: sticky;
    top: calc(var(--nav-h) + 28px);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    padding: 30px 24px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-align: center;
}
.exp-photo-wrap {
    width: 156px; height: 156px;
    border-radius: 50%;
    padding: 3px;
    background: var(--grad);
    box-shadow: 0 12px 36px rgba(0,0,0,0.45);
}
.exp-photo {
    width: 100%; height: 100%;
    border-radius: 50%;
    object-fit: cover;
    object-position: center top;
    display: block;
    border: 3px solid var(--bg-2);
}
.exp-name { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.01em; }
.exp-role {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    color: var(--blue-bright);
}
.exp-loc {
    font-size: 0.82rem;
    color: var(--faint);
    display: flex;
    align-items: center;
    gap: 6px;
}
.exp-divider { width: 100%; height: 1px; background: var(--border); }

.timeline { display: flex; flex-direction: column; gap: 20px; }
.exp-item {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px 28px;
    transition: border-color .25s, transform .25s;
}
.exp-item:hover { border-color: var(--border-2); transform: translateY(-3px); }
.exp-item-top {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 6px;
}
.exp-company {
    font-size: 1.2rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}
.exp-company .badge-live {
    font-family: var(--font-mono);
    font-size: 0.64rem;
    color: #34d399;
    border: 1px solid rgba(52,211,153,0.35);
    background: rgba(52,211,153,0.08);
    padding: 2px 8px;
    border-radius: 20px;
    letter-spacing: 0.04em;
}
.exp-period {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--faint);
    white-space: nowrap;
}
.exp-jobrole {
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--blue-bright);
    margin-bottom: 14px;
}
.exp-item ul {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 9px;
}
.exp-item li {
    position: relative;
    padding-left: 22px;
    color: var(--muted);
    font-size: 0.93rem;
    line-height: 1.55;
}
.exp-item li::before {
    content: "▹";
    position: absolute;
    left: 0;
    color: var(--purple-br);
}

/* ============================================================
   CERTIFICATES
   ============================================================ */
.cert-stats {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 22px;
}
.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
    margin-bottom: 30px;
}
.filter-btn {
    appearance: none;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    padding: 8px 14px;
    border-radius: 10px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: color .2s, background .2s, border-color .2s, transform .2s;
}
.filter-btn i { font-size: 0.82rem; }
.filter-btn:hover { color: var(--text); background: var(--surface-2); transform: translateY(-2px); }
.filter-btn.active {
    color: #fff;
    background: var(--grad);
    border-color: transparent;
}
.filter-count { opacity: 0.7; font-size: 0.72rem; }

.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 18px;
}
.cert-card {
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform .25s, border-color .25s, box-shadow .25s;
}
.cert-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-2);
    box-shadow: 0 20px 44px rgba(0,0,0,0.45);
}
.cert-icon-area {
    height: 92px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}
.cert-icon-area::after {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(7,10,20,0.34);
}
.cert-icon {
    font-size: 2.3rem;
    color: #fff;
    z-index: 1;
    filter: drop-shadow(0 3px 10px rgba(0,0,0,0.4));
}
.cert-body {
    padding: 15px 16px 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}
.cert-badge {
    align-self: flex-start;
    font-family: var(--font-mono);
    font-size: 0.64rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--muted);
    padding: 3px 9px;
    border-radius: 20px;
    background: var(--surface-2);
    border: 1px solid var(--border);
}
.cert-title {
    font-size: 0.92rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--text);
    flex: 1;
}
.cert-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--blue-bright);
    text-decoration: none;
    font-weight: 500;
    transition: gap .2s, color .2s;
}
.cert-link:hover { gap: 12px; color: var(--purple-br); }

.cert-empty {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--faint);
    font-family: var(--font-mono);
    padding: 40px 0;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 28px 20px 40px;
    color: var(--faint);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    border-top: 1px solid var(--border);
}
.footer a { color: var(--muted); text-decoration: none; }
.footer a:hover { color: var(--blue-bright); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 920px) {
    .hero { grid-template-columns: 1fr; }
    .hero-right { order: -1; }
    .terminal { max-width: 520px; }
    .exp-layout { grid-template-columns: 1fr; }
    .exp-profile { position: static; flex-direction: row; flex-wrap: wrap; text-align: left; justify-content: flex-start; }
    .exp-photo-wrap { width: 110px; height: 110px; }
    .exp-divider { display: none; }
}

@media (max-width: 720px) {
    .nav-tabs {
        position: fixed;
        top: var(--nav-h);
        left: 0;
        width: 100%;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        padding: 12px clamp(18px,4vw,48px);
        background: rgba(8,11,22,0.96);
        border-bottom: 1px solid var(--border);
        backdrop-filter: blur(16px);
        transform: translateY(-130%);
        transition: transform .3s cubic-bezier(.2,.7,.2,1);
    }
    .nav-tabs.open { transform: translateY(0); }
    .tab { font-size: 0.9rem; padding: 12px 14px; }
    .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
    .brand .muted { display: none; }
}

@media (max-width: 420px) {
    .hero h1 { font-size: 2.4rem; }
    .hero-actions { width: 100%; }
    .btn { flex: 1; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}