/* =========================================================
   Silas Sistemas — design tokens
   Direction: "painel de operação / dossiê técnico"
   Grounded in the product itself: case files (TCO), camera
   viewfinder brackets (OCR de placas), instrument readouts.
   ========================================================= */

:root {
    --ink: #0a0d12;
    --panel: #0f141b;
    --card: #131a22;
    --card-2: #161e27;
    --border: rgba(238, 244, 248, 0.09);
    --border-strong: rgba(238, 244, 248, 0.16);
    --text: #eef2f6;
    --muted: #8b96a5;
    --muted-2: #5f6b7a;

    --amber: #f2a541;
    --amber-soft: rgba(242, 165, 65, 0.14);
    --blue: #5c8df6;
    --blue-soft: rgba(92, 141, 246, 0.14);
    --ok: #3ecf8e;

    --font-display: "Space Grotesk", "Inter", sans-serif;
    --font-mono: "JetBrains Mono", ui-monospace, monospace;
    --font-body: "Inter", sans-serif;

    --radius: 14px;
    --radius-lg: 20px;
    --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: var(--font-body);
    background: var(--ink);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

h1, h2, h3 { font-family: var(--font-display); letter-spacing: -0.02em; margin: 0; }

.container {
    width: min(var(--container), 92%);
    margin: 0 auto;
}

.mono { font-family: var(--font-mono); }

/* subtle ambient grain so the flat ink background doesn't look inert */
.grain {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    opacity: 0.5;
    background:
        radial-gradient(circle at 15% 0%, rgba(92, 141, 246, 0.07), transparent 40%),
        radial-gradient(circle at 85% 10%, rgba(242, 165, 65, 0.05), transparent 35%);
}

/* =========================================================
   Header
   ========================================================= */

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(10, 13, 18, 0.86);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
}

.nav {
    height: 74px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-mark {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: grid;
    place-items: center;
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 14px;
    color: var(--ink);
    background: var(--amber);
}

.brand-text {
    font-weight: 600;
    font-size: 15px;
}

.brand-text small {
    display: block;
    font-family: var(--font-mono);
    font-weight: 400;
    font-size: 11px;
    letter-spacing: 0.04em;
    color: var(--muted-2);
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    gap: 28px;
    font-size: 14px;
    color: var(--muted);
}

.nav-links a { transition: color 0.2s ease; }
.nav-links a:hover { color: var(--text); }

/* =========================================================
   Buttons
   ========================================================= */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 22px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 14px;
    border: 1px solid var(--border-strong);
    background: var(--card);
    transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
    white-space: nowrap;
}

.btn:hover { transform: translateY(-2px); border-color: var(--muted); }

.btn-primary {
    background: var(--amber);
    color: var(--ink);
    border: none;
}

.btn-primary:hover { background: #f6b662; }

.btn-ghost { background: transparent; }

/* =========================================================
   Eyebrows / labels
   ========================================================= */

.eyebrow {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.14em;
    color: var(--amber);
    margin-bottom: 16px;
    text-transform: uppercase;
}

/* =========================================================
   Hero
   ========================================================= */

.hero { padding: 88px 0 40px; position: relative; z-index: 1; }

.hero-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 56px;
    align-items: center;
}

h1 {
    font-size: clamp(36px, 5.4vw, 60px);
    line-height: 1.06;
    font-weight: 600;
    margin-bottom: 22px;
}

h1 .hl { color: var(--amber); }

.lead {
    color: #c9d2dd;
    font-size: 17px;
    max-width: 560px;
    margin-bottom: 26px;
}

.chip-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.chip {
    font-family: var(--font-mono);
    font-size: 12px;
    color: #d7e0ea;
    border: 1px solid var(--border-strong);
    background: rgba(255, 255, 255, 0.02);
    padding: 6px 12px;
    border-radius: 999px;
}

.actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* Hero instrument panel */

.panel-frame {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0));
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 6px;
    box-shadow: 0 40px 90px rgba(0, 0, 0, 0.45);
}

.panel-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 12px;
}

.panel-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--amber);
}

.panel-title { flex: 1; }

.panel-status {
    color: var(--ok);
    letter-spacing: 0.04em;
}

.panel-body {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 20px;
}

.panel-row {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    padding: 10px 0;
    border-bottom: 1px dashed var(--border);
    color: var(--muted);
}

.panel-row:last-of-type { border-bottom: none; }
.panel-row .mono { color: var(--text); }
.tag-ok { color: var(--ok) !important; }

.panel-scan { margin-top: 18px; }

.scan-frame {
    position: relative;
    height: 110px;
    border-radius: 10px;
    background: repeating-linear-gradient(
        135deg,
        rgba(255, 255, 255, 0.025) 0px,
        rgba(255, 255, 255, 0.025) 1px,
        transparent 1px,
        transparent 10px
    ), #0b0f15;
    display: grid;
    place-items: center;
    overflow: hidden;
}

.scan-plate {
    font-family: var(--font-mono);
    font-size: 20px;
    letter-spacing: 0.12em;
    color: var(--text);
    background: rgba(0, 0, 0, 0.35);
    padding: 6px 14px;
    border-radius: 6px;
    border: 1px solid var(--border-strong);
}

.scan-line {
    position: absolute;
    left: 6%;
    right: 6%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--amber), transparent);
    animation: scan 2.6s ease-in-out infinite;
    opacity: 0.85;
}

@keyframes scan {
    0% { top: 10%; }
    50% { top: 88%; }
    100% { top: 10%; }
}

/* corner bracket / viewfinder motif — reused for case cards */

.corner {
    position: absolute;
    width: 16px;
    height: 16px;
    border-color: var(--amber);
    opacity: 0.85;
}

.tl { top: 8px; left: 8px; border-top: 2px solid; border-left: 2px solid; }
.tr { top: 8px; right: 8px; border-top: 2px solid; border-right: 2px solid; }
.bl { bottom: 8px; left: 8px; border-bottom: 2px solid; border-left: 2px solid; }
.br { bottom: 8px; right: 8px; border-bottom: 2px solid; border-right: 2px solid; }

/* =========================================================
   Stats bar
   ========================================================= */

.stats-bar {
    position: relative;
    z-index: 1;
    margin: 36px 0 8px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    background: rgba(19, 26, 34, 0.5);
}

.stat {
    padding: 30px 20px;
    text-align: center;
    border-right: 1px solid var(--border);
}

.stat:last-child { border-right: none; }

.stat-number, .stat-suffix {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 600;
    color: var(--text);
}

.stat small {
    display: block;
    margin-top: 6px;
    color: var(--muted);
    font-size: 13px;
}

/* =========================================================
   Sections
   ========================================================= */

.section { padding: 64px 0; position: relative; z-index: 1; }

.section-head { margin-bottom: 32px; max-width: 640px; }

.section-head h2 {
    font-size: clamp(26px, 3.4vw, 36px);
    font-weight: 600;
    line-height: 1.2;
}

.grid { display: grid; gap: 18px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

.card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.01));
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px;
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-6px);
    border-color: var(--border-strong);
    box-shadow: 0 24px 50px rgba(0, 0, 0, 0.35);
}

.spec-code {
    display: inline-block;
    font-size: 12px;
    color: var(--amber);
    margin-bottom: 14px;
}

.spec-card h3 { font-size: 18px; margin-bottom: 8px; }
.spec-card p { color: var(--muted); font-size: 14px; margin: 0; }

/* =========================================================
   Case files (project cards)
   ========================================================= */

.case-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.case-card {
    display: grid;
    grid-template-columns: 340px 1fr;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--card);
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.case-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-strong);
    box-shadow: 0 26px 60px rgba(0, 0, 0, 0.4);
}

.case-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background:
        repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0px, rgba(255, 255, 255, 0.03) 1px, transparent 1px, transparent 12px),
        linear-gradient(160deg, rgba(92, 141, 246, 0.12), rgba(242, 165, 65, 0.08)),
        var(--panel);
    min-height: 180px;
    overflow: hidden;
}

.case-visual.has-image { background: var(--panel); }

.case-visual img {
    display: block;
    width: 100%;
    height: auto;
    max-height: 100%;
    border-radius: 8px;
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.45);
    transition: transform 0.5s ease;
}

.case-card:hover .case-visual img { transform: scale(1.02); }

.case-visual-label {
    font-size: 13px;
    letter-spacing: 0.1em;
    color: var(--muted);
    background: rgba(0, 0, 0, 0.3);
    padding: 6px 12px;
    border-radius: 6px;
    border: 1px solid var(--border-strong);
}

.case-body { padding: 26px 28px; }

.case-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--muted-2);
    letter-spacing: 0.06em;
    margin-bottom: 12px;
}

.stamp {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--ok);
    border: 1px dashed var(--ok);
    padding: 4px 10px;
    border-radius: 6px;
    transform: rotate(-2deg);
    letter-spacing: 0.08em;
}

.case-body h3 { font-size: 21px; margin-bottom: 10px; }
.case-body p { color: var(--muted); font-size: 14.5px; margin-bottom: 16px; }

.case-result {
    font-size: 13.5px;
    color: #d7e0ea;
    padding-top: 14px;
    border-top: 1px dashed var(--border);
}

.case-result .mono { color: var(--amber); font-size: 12px; margin-right: 4px; }

/* =========================================================
   Process
   ========================================================= */

.process-line {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 14px;
}

.process-step {
    padding: 22px 16px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.process-step:hover { transform: translateY(-4px); border-color: var(--border-strong); }

.process-num {
    display: block;
    font-size: 13px;
    color: var(--amber);
    margin-bottom: 12px;
}

.process-step strong { font-size: 15px; display: block; margin-bottom: 6px; }
.process-step p { color: var(--muted); font-size: 13px; margin: 0; }

/* =========================================================
   Tech row
   ========================================================= */

.tech-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.tech {
    font-family: var(--font-mono);
    font-size: 13px;
    padding: 12px 18px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: #d7e0ea;
    transition: border-color 0.25s ease, transform 0.25s ease;
}

.tech:hover { border-color: var(--amber); transform: translateY(-3px); }

/* =========================================================
   CTA
   ========================================================= */

.cta {
    padding: 40px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--amber-soft), var(--blue-soft));
    border: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    gap: 28px;
    align-items: center;
    flex-wrap: wrap;
}

.cta h2 { font-size: clamp(24px, 3vw, 32px); margin: 6px 0 10px; }
.cta-sub { color: var(--muted); font-size: 15px; max-width: 440px; margin: 0; }

/* =========================================================
   Footer
   ========================================================= */

.site-footer {
    border-top: 1px solid var(--border);
    padding: 44px 0 26px;
    color: var(--muted);
    position: relative;
    z-index: 1;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.3fr;
    gap: 28px;
}

.footer-desc { margin-top: 14px; font-size: 14px; max-width: 320px; }

.footer-title {
    display: block;
    color: var(--text);
    font-size: 13px;
    margin-bottom: 10px;
}

.footer-grid p { margin: 6px 0; font-size: 14px; }
.footer-grid a:hover { color: var(--text); }

.footer-bottom {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    font-size: 12.5px;
    flex-wrap: wrap;
    gap: 10px;
}

.footer-stamp {
    font-family: var(--font-mono);
    color: var(--ok);
    letter-spacing: 0.08em;
}

/* =========================================================
   Floating WhatsApp
   ========================================================= */

.whatsapp-float {
    position: fixed;
    right: 22px;
    bottom: 22px;
    width: 58px;
    height: 58px;
    border-radius: 50%;
    background: var(--ok);
    color: #06231a;
    display: grid;
    place-items: center;
    box-shadow: 0 16px 34px rgba(62, 207, 142, 0.35);
    z-index: 30;
    transition: transform 0.25s ease;
}

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

/* =========================================================
   Scroll reveal (driven by static/js/app.js)
   ========================================================= */

[data-reveal] {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-reveal].is-visible { opacity: 1; transform: translateY(0); }

[data-reveal-delay="0"] { transition-delay: 0s; }
[data-reveal-delay="1"] { transition-delay: 0.08s; }
[data-reveal-delay="2"] { transition-delay: 0.16s; }

@media (prefers-reduced-motion: reduce) {
    [data-reveal] { opacity: 1; transform: none; transition: none; }
    .scan-line { animation: none; }
}

/* =========================================================
   Responsive
   ========================================================= */

@media (max-width: 960px) {
    .nav-links { display: none; }
    .hero-grid { grid-template-columns: 1fr; }
    .grid-3 { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .stat:nth-child(2) { border-right: none; }
    .process-line { grid-template-columns: repeat(2, 1fr); }
    .case-card { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .cta { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 560px) {
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .process-line { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
}