/* ===== BiruLab — design tokens ===== */
:root{
  --bg: #0e0e12;
  --bg-soft: #15151c;
  --surface: #1b1b24;
  --border: rgba(255,255,255,0.10);
  --border-strong: rgba(255,255,255,0.18);
  --text: #f3f2f0;
  --text-secondary: #b4b2c2;
  --text-muted: #7c7a8c;

  --purple: #6c5ce7;
  --orange: #ff7a3d;
  --lime: #8fd14f;

  --grad: linear-gradient(100deg, var(--purple) 0%, var(--orange) 55%, var(--lime) 100%);
  --grad-soft: linear-gradient(120deg, rgba(108,92,231,0.18), rgba(255,122,61,0.14), rgba(143,209,79,0.14));

  --font-display: 'Baloo 2', 'Fredoka', sans-serif;
  --font-body: 'Inter', sans-serif;

  --radius: 14px;
  --radius-lg: 22px;
}

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

html{ scroll-behavior: smooth; }

body{
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; }
button{ font-family: inherit; cursor:pointer; }

.wrap{
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ===== Gradient text utility ===== */
.grad-text{
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ===== Header ===== */
header{
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(14,14,18,0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 18px 0;
}
.logo{
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
}
.nav-links{
  display:flex;
  gap: 36px;
  align-items:center;
}
.nav-links a{
  font-size: 0.95rem;
  color: var(--text-secondary);
  transition: color .2s ease;
  position:relative;
}
.nav-links a:hover, .nav-links a.active{ color: var(--text); }
.nav-links a.active::after{
  content:'';
  position:absolute;
  left:0; right:0; bottom:-6px;
  height:2px;
  background: var(--grad);
  border-radius: 2px;
}
.btn{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.92rem;
  border: none;
  transition: transform .18s ease, box-shadow .18s ease;
}
.btn-primary{
  background: var(--grad);
  color: #fff;
}
.btn-primary:hover{ transform: translateY(-2px); box-shadow: 0 10px 28px -8px rgba(255,122,61,0.45); }
.btn-ghost{
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--text);
}
.btn-ghost:hover{ border-color: var(--text-secondary); }

.menu-toggle{
  display:none;
  background:none; border:none; color: var(--text);
  font-size: 1.5rem;
}

/* ===== Sections generic ===== */
section{ padding: 96px 0; }
.eyebrow{
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 14px;
  display:flex;
  align-items:center;
  gap: 10px;
}
.eyebrow::before{
  content:'';
  width: 18px; height: 2px;
  background: var(--grad);
  display:inline-block;
  border-radius: 2px;
}

h1,h2,h3{ font-family: var(--font-display); font-weight: 700; line-height: 1.15; letter-spacing: -0.01em; }
h2{ font-size: clamp(1.8rem, 3.2vw, 2.6rem); margin-bottom: 14px; }
h3{ font-size: 1.2rem; }
p{ color: var(--text-secondary); }

.section-head{ max-width: 620px; margin-bottom: 52px; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }

/* ===== Hero ===== */
.hero{
  padding: 110px 0 90px;
  position: relative;
  overflow: hidden;
}
.hero::before{
  content:'';
  position:absolute;
  top: -200px; right: -200px;
  width: 600px; height: 600px;
  background: var(--grad);
  opacity: 0.16;
  filter: blur(110px);
  border-radius: 50%;
  pointer-events:none;
}
.hero-inner{
  position: relative;
  text-align:center;
  max-width: 760px;
  margin: 0 auto;
}
.hero h1{
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  margin-bottom: 22px;
}
.hero p{
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 560px;
  margin-left:auto; margin-right:auto;
}
.hero-ctas{
  display:flex; gap: 16px; justify-content:center; flex-wrap:wrap;
}

/* ===== Pillars ===== */
.pillars{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.pillar-card{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: border-color .2s ease, transform .2s ease;
}
.pillar-card:hover{ border-color: var(--border-strong); transform: translateY(-4px); }
.pillar-icon{
  width: 44px; height: 44px;
  border-radius: 12px;
  display:flex; align-items:center; justify-content:center;
  font-size: 1.3rem;
  margin-bottom: 18px;
}
.pillar-card:nth-child(1) .pillar-icon{ background: rgba(108,92,231,0.18); color: var(--purple); }
.pillar-card:nth-child(2) .pillar-icon{ background: rgba(255,122,61,0.18); color: var(--orange); }
.pillar-card:nth-child(3) .pillar-icon{ background: rgba(143,209,79,0.18); color: var(--lime); }
.pillar-card h3{ margin-bottom: 10px; }
.pillar-card p{ font-size: 0.94rem; }

/* ===== Team ===== */
.team{
  background: var(--bg-soft);
}
.team-grid{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  max-width: 760px;
  margin: 0 auto;
}
.team-card{
  text-align:center;
}
.team-photo{
  position:relative;
  border-radius: var(--radius-lg);
  overflow:hidden;
  aspect-ratio: 3/4;
  margin-bottom: 18px;
  background: var(--surface);
}
.team-photo img{
  width:100%; height:100%; object-fit:cover;
}
.team-photo::after{
  content:'';
  position:absolute; inset:0;
  background: linear-gradient(180deg, transparent 60%, rgba(0,0,0,0.55) 100%);
}
.team-card h3{ font-size: 1.25rem; margin-bottom: 4px; }
.team-role{
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ===== Logos strip ===== */
.logos-strip{
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 36px 0;
}
.logos-grid{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap: 14px;
}
.logo-pill{
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 9px 20px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 600;
}

/* ===== CTA band ===== */
.cta-band{
  background: var(--bg-soft);
  position: relative;
  overflow:hidden;
  text-align:center;
}
.cta-band::before{
  content:'';
  position:absolute;
  inset: -40% -10%;
  background: var(--grad-soft);
  filter: blur(80px);
  pointer-events:none;
}
.cta-band-inner{ position:relative; }
.cta-band h2{ margin-bottom: 16px; }
.cta-band p{ margin-bottom: 32px; max-width: 480px; margin-left:auto; margin-right:auto; }

/* ===== Services page ===== */
.service-list{
  display:flex;
  flex-direction: column;
  gap: 18px;
}
.service-row{
  display:grid;
  grid-template-columns: 56px 1fr;
  gap: 22px;
  align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color .2s ease;
}
.service-row:hover{ border-color: var(--border-strong); }
.service-icon{
  width: 56px; height: 56px;
  border-radius: 14px;
  display:flex; align-items:center; justify-content:center;
  font-size: 1.5rem;
  background: var(--grad);
  color:#fff;
  flex-shrink:0;
}
.service-row h3{ margin-bottom: 8px; font-size: 1.25rem; }
.service-row p{ font-size: 0.97rem; }

.process-strip{
  display:grid;
  grid-template-columns: repeat(3,1fr);
  gap: 24px;
  margin-top: 24px;
}
.process-step{
  text-align:center;
  padding: 20px;
}
.process-num{
  font-family: var(--font-display);
  font-size: 2.2rem;
  background: var(--grad);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  margin-bottom: 8px;
}

/* ===== Portfolio page ===== */
.hashtag-badge{
  display:inline-block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  background: var(--grad);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  margin-top: 6px;
}
.filters{
  display:flex;
  gap: 10px;
  flex-wrap:wrap;
  justify-content:center;
  margin-bottom: 48px;
}
.filter-chip{
  border: 1px solid var(--border-strong);
  background: transparent;
  color: var(--text-secondary);
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 600;
  transition: all .18s ease;
}
.filter-chip:hover{ color: var(--text); border-color: var(--text-secondary); }
.filter-chip.active{
  background: var(--grad);
  color: #fff;
  border-color: transparent;
}

.portfolio-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.portfolio-card{
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow:hidden;
  background: var(--surface);
  transition: transform .2s ease, border-color .2s ease;
}
.portfolio-card:hover{ transform: translateY(-4px); border-color: var(--border-strong); }
.portfolio-thumb{
  aspect-ratio: 4/3;
  background: var(--grad-soft);
  display:flex; align-items:center; justify-content:center;
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--text-muted);
  position: relative;
  overflow: hidden;
}
.portfolio-thumb span{ position:relative; z-index:1; }
.portfolio-info{ padding: 18px 20px; }
.portfolio-info h3{ font-size: 1.05rem; margin-bottom: 4px; }
.portfolio-tag{ font-size: 0.78rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }
.portfolio-card[data-cat]{ display: block; }
.portfolio-card.hidden{ display: none; }

.eusoubiru-banner{
  margin-top: 64px;
  border-radius: var(--radius-lg);
  padding: 56px 40px;
  text-align:center;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.eusoubiru-banner::before{
  content:'';
  position:absolute; inset: -50%;
  background: var(--grad-soft);
  filter: blur(90px);
}
.eusoubiru-banner-inner{ position:relative; }
.eusoubiru-tag{
  font-family: var(--font-display);
  font-size: 2rem;
  background: var(--grad);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  margin-bottom: 10px;
}

/* ===== Footer ===== */
footer{
  border-top: 1px solid var(--border);
  padding: 40px 0;
}
.footer-inner{
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap: 16px;
}
.footer-logo{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
}
.footer-contact{
  display:flex;
  gap: 24px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}
.footer-contact a:hover{ color: var(--text); }
.footer-copy{ font-size: 0.8rem; color: var(--text-muted); }

/* ===== Responsive ===== */
@media (max-width: 860px){
  .nav-links{ display:none; }
  .menu-toggle{ display:block; }
  .pillars{ grid-template-columns: 1fr; }
  .team-grid{ grid-template-columns: 1fr; max-width: 320px; }
  .service-row{ grid-template-columns: 1fr; }
  .process-strip{ grid-template-columns: 1fr; }
  .portfolio-grid{ grid-template-columns: repeat(2,1fr); }
  .footer-inner{ flex-direction: column; align-items:flex-start; }
}
@media (max-width: 540px){
  .portfolio-grid{ grid-template-columns: 1fr; }
  section{ padding: 64px 0; }
}