/* ========================
   OPUS4 — GLOBAL STYLES (LIGHT / CORPORATE)
   ======================== */

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

:root {
  /* Backgrounds */
  --bg:  #F4F6FA;
  --bg2: #FFFFFF;
  --bg3: #EEF1F7;

  /* Surfaces */
  --surface: rgba(15,30,60,0.04);
  --surface-hover: rgba(15,30,60,0.07);

  /* Borders */
  --border: rgba(15,30,60,0.10);
  --border-hover: rgba(15,30,60,0.22);

  /* Text */
  --text: #0F1E3C;
  --text-muted: #4A5878;
  --text-faint: #9BA8BF;

  /* Brand palette — navy + steel-blue + gold accent */
  --accent1: #1A56DB;         /* primary blue */
  --accent2: #0D3270;         /* deep navy */
  --accent3: #C8961A;         /* gold accent */

  /* Gradients */
  --grad: linear-gradient(135deg, #1A56DB 0%, #0D3270 60%, #0A2456 100%);
  --grad-subtle: linear-gradient(135deg, rgba(26,86,219,.08) 0%, rgba(13,50,112,.08) 100%);
  --grad-gold: linear-gradient(135deg, #C8961A 0%, #E8B840 100%);

  /* Misc */
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 4px 24px rgba(15,30,60,.10);
  --shadow-glow: 0 8px 32px rgba(26,86,219,.14);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========================
   NAVBAR
   ======================== */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: background .3s ease, backdrop-filter .3s ease, padding .3s ease, border-color .3s ease, box-shadow .3s ease;
  padding: 20px 0;
  border-bottom: 1px solid transparent;
  /* Light mode: slight white frosted bg even before scrolling */
  background: rgba(255,255,255,.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

#navbar.scrolled {
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--border);
  padding: 12px 0;
  box-shadow: 0 2px 16px rgba(15,30,60,.08);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  text-decoration: none;
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -1px;
  display: flex;
  align-items: center;
  gap: 0px;
}
.logo-opus { color: var(--text); }
.logo-4-img {
  height: 2.4rem;
  object-fit: contain;
  margin-left: -9px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 8px;
  align-items: center;
}
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: .92rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 8px;
  transition: all .2s;
}
.nav-links a:not(.nav-cta):hover { color: var(--text); background: var(--surface); }
.nav-links .nav-cta {
  background: var(--grad);
  color: #fff !important;
  padding: 9px 20px;
  border-radius: 8px;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(26,86,219,.3);
  position: relative;
  overflow: hidden;
  transition: all .3s;
}
.nav-links .nav-cta::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: .3s;
}
.nav-links .nav-cta:hover::after { background: rgba(255,255,255,.1); }
.nav-links .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(26,86,219,.4); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all .3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ========================
   HERO
   ======================== */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 140px 24px 80px;
  background: #F0F4FF;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('../img/hero_bg_light.webp') center/cover no-repeat;
  opacity: .18;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(26,86,219,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26,86,219,.05) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
}

/* Subtle geometric accent shapes instead of dark orbs */
.hero-orbs { position: absolute; inset: 0; pointer-events: none; }
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: .18;
}
.orb1 { width: 520px; height: 520px; background: #1A56DB; top: -120px; right: -80px; animation: float1 9s ease-in-out infinite; }
.orb2 { width: 420px; height: 420px; background: #0D3270; bottom: -60px; left: -120px; animation: float2 11s ease-in-out infinite; }
.orb3 { width: 280px; height: 280px; background: #C8961A; top: 50%; left: 50%; transform: translate(-50%,-50%); animation: float3 13s ease-in-out infinite; opacity: .10; }

@keyframes float1 { 0%,100% { transform: translate(0,0); } 50% { transform: translate(-30px,20px); } }
@keyframes float2 { 0%,100% { transform: translate(0,0); } 50% { transform: translate(20px,-30px); } }
@keyframes float3 { 0%,100% { transform: translate(-50%,-50%); } 50% { transform: translate(-45%,-55%); } }

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  text-align: center;
}

.hero-title {
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -2px;
  margin-bottom: 24px;
  color: var(--text);
}

.gradient-text {
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--grad);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: .95rem;
  padding: 14px 28px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  transition: all .3s;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(26,86,219,.3);
}
.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: .3s;
}
.btn-primary:hover::after { background: rgba(255,255,255,.1); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(26,86,219,.4); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #FFFFFF;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: .95rem;
  padding: 14px 28px;
  border-radius: 10px;
  border: 1.5px solid var(--border);
  cursor: pointer;
  transition: all .3s;
  box-shadow: 0 2px 8px rgba(15,30,60,.08);
}
.btn-secondary:hover { background: var(--bg3); border-color: var(--border-hover); transform: translateY(-2px); box-shadow: 0 4px 16px rgba(15,30,60,.12); }

.btn-full { width: 100%; justify-content: center; font-size: 1rem; padding: 16px; }

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}
.stat { text-align: center; }
.stat-num { display: block; font-size: 1.8rem; font-weight: 800; background: var(--grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-label { font-size: .78rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .06em; }
.stat-divider { width: 1px; height: 40px; background: var(--border); }

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-faint);
  font-size: .7rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  z-index: 2;
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--text-faint), transparent);
  animation: scrollAnim 2s ease-in-out infinite;
}
@keyframes scrollAnim { 0%,100% { opacity: .4; } 50% { opacity: 1; } }

/* ========================
   SECTIONS COMMON
   ======================== */
section { padding: 100px 0; }

.section-tag {
  display: inline-block;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent1);
  margin-bottom: 16px;
  background: rgba(26,86,219,.08);
  border: 1px solid rgba(26,86,219,.18);
  padding: 4px 14px;
  border-radius: 100px;
}
.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.15;
  margin-bottom: 20px;
  color: var(--text);
}
.section-sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 600px;
  margin-bottom: 60px;
  line-height: 1.7;
}

.glass-card {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 2px 16px rgba(15,30,60,.06);
  transition: all .3s;
}
.glass-card:hover {
  border-color: rgba(26,86,219,.20);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

/* ========================
   SOBRE / EXPERTISE
   ======================== */
#sobre { background: var(--bg2); }

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.expertise-card {
  padding: 32px;
  background: var(--grad);
  color: #ffffff;
  border: 1px solid rgba(255,255,255,0.1);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: #ffffff;
}
.expertise-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: #ffffff;
}
.expertise-card p { 
  font-size: .9rem; 
  color: rgba(255,255,255,0.85); 
  line-height: 1.7; 
}

/* ========================
   SOLUÇÕES
   ======================== */
#solucoes { background: var(--bg); }

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.solution-card {
  position: relative;
  padding: 28px 28px 28px 36px;
  background: #FFFFFF;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  border-left: 4px solid var(--accent1);
  box-shadow: 0 2px 16px rgba(15,30,60,.06);
  transition: all .3s;
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}
.solution-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-subtle);
  opacity: 0;
  transition: opacity .3s;
  pointer-events: none;
}
.solution-card:hover::before { opacity: 1; }
.solution-card:hover {
  border-color: rgba(26,86,219,.35);
  border-left-color: var(--accent1);
  box-shadow: 0 8px 32px rgba(26,86,219,.13);
  transform: translateY(-4px);
}

.solution-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--grad);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(26,86,219,.25);
  flex-shrink: 0;
}
.solution-card h3 { 
  font-size: 1.05rem; 
  font-weight: 700; 
  margin-bottom: 8px; 
  color: var(--text);
}
.solution-card p { 
  font-size: .88rem; 
  color: var(--text-muted); 
  line-height: 1.7; 
  flex: 1;
  margin-bottom: 0;
}
.solution-tag {
  position: absolute;
  top: 28px;
  right: 28px;
  display: inline-block;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent3);
  background: rgba(200,150,26,.10);
  border: 1px solid rgba(200,150,26,.30);
  padding: 3px 10px;
  border-radius: 100px;
}

/* ========================
   TECNOLOGIAS
   ======================== */
#tecnologias {
  background: var(--bg2);
}

/* Static tech grid */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  margin-top: 16px;
}

.tech-logo-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  cursor: default;
  transition: transform .3s ease, background .3s ease, border-color .3s ease, box-shadow .3s ease;
  padding: 28px 12px 22px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #FFFFFF;
}
.tech-logo-item:hover {
  transform: translateY(-6px);
  background: #F8FAFF;
  border-color: rgba(26,86,219,.22);
  box-shadow: 0 8px 24px rgba(26,86,219,.10);
}

.tech-logo-item img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  transition: transform .3s ease, filter .3s ease;
  filter: drop-shadow(0 0 0px transparent);
}
/* dark-colored SVGs (Next.js, etc.) need no special treatment in light mode */
.tech-logo-item:hover img {
  transform: scale(1.18);
  filter: drop-shadow(0 0 8px rgba(26,86,219,.25));
}

.tech-logo-item span {
  font-size: .68rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .07em;
  white-space: nowrap;
}

/* ========================
   CONTATO
   ======================== */
#contato { background: var(--bg); }

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding-top: 8px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(26,86,219,.08);
  border: 1px solid rgba(26,86,219,.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent1);
  flex-shrink: 0;
}
.contact-item strong { display: block; font-weight: 700; font-size: .92rem; margin-bottom: 2px; color: var(--text); }
.contact-item span { font-size: .85rem; color: var(--text-muted); }

.contact-form { padding: 36px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}
.form-group label {
  font-size: .82rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .06em;
}
.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: inherit;
  font-size: .95rem;
  padding: 12px 16px;
  outline: none;
  transition: all .2s;
  resize: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-faint); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent1);
  background: #F8FAFF;
  box-shadow: 0 0 0 3px rgba(26,86,219,.10);
}
.form-group select option { background: #fff; color: var(--text); }

.form-status {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 500;
  display: none;
}
.form-status.success { background: rgba(22,163,74,.08); border: 1px solid rgba(22,163,74,.25); color: #16A34A; display: block; }
.form-status.error { background: rgba(220,38,38,.08); border: 1px solid rgba(220,38,38,.25); color: #DC2626; display: block; }

/* ========================
   FOOTER
   ======================== */
#footer {
  background: var(--accent2);
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 64px 0 32px;
}

/* Footer uses inverted (dark) colors since bg is deep navy */
#footer .logo-opus { color: #fff; }
#footer .logo-4-img { filter: brightness(0) invert(1); }

#footer .footer-brand p {
  font-size: .9rem;
  color: rgba(255,255,255,.55);
  line-height: 1.7;
  margin: 16px 0 24px;
  max-width: 300px;
}

.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.6);
  text-decoration: none;
  transition: all .2s;
}
.footer-social a:hover { background: rgba(255,255,255,.15); color: #fff; border-color: rgba(255,255,255,.25); }

.footer-col h4 {
  font-size: .78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: rgba(255,255,255,.9);
  margin-bottom: 16px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a,
.footer-col ul li span {
  color: rgba(255,255,255,.50);
  text-decoration: none;
  font-size: .88rem;
  transition: color .2s;
}
.footer-col ul li a:hover { color: rgba(255,255,255,.9); }

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: 24px;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  font-size: .83rem;
  color: rgba(255,255,255,.35);
}

/* ========================
   RESPONSIVE
   ======================== */
@media (max-width: 900px) {
  .nav-links {
    position: fixed;
    top: 0; right: -100%;
    width: min(85vw, 340px);
    height: 100vh;
    background: rgba(255,255,255,.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 110px 32px 40px;
    gap: 12px;
    border-left: 1px solid var(--border);
    transition: right .4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: -8px 0 32px rgba(15,30,60,.12);
  }
  .nav-links.open { right: 0; }
  .nav-links a { 
    padding: 16px 20px; 
    width: 100%; 
    font-size: 1.15rem;
    border-radius: 12px;
    display: flex;
    align-items: center;
  }
  .nav-links .nav-cta {
    margin-top: 16px;
    justify-content: center;
    padding: 18px 24px;
    font-size: 1.1rem;
  }
  .hamburger { display: flex; z-index: 1001; }

  .contact-wrapper { grid-template-columns: 1fr; }
  .contact-info { display: none; }
  .form-row { grid-template-columns: 1fr; }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }

  .hero-stats { gap: 20px; }
  .stat-divider { height: 30px; }

  .tech-grid { grid-template-columns: repeat(4, 1fr); gap: 10px; }
}

@media (max-width: 600px) {
  section { padding: 72px 0; }
  .expertise-grid { grid-template-columns: 1fr; }
  .solutions-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .hero-title { letter-spacing: -1px; }
  .hero-stats { flex-direction: column; gap: 16px; }
  .stat-divider { width: 40px; height: 1px; }

  .tech-grid { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .tech-logo-item { padding: 20px 8px 16px; }
}