/* ================================================================
   PERF.AGENCY · design.css
   Apple-inspired design system
   ================================================================ */

/* ── Variables ── */
:root {
  --bg:       #f5f5f7;
  --bg2:      #ffffff;
  --bg3:      #f0f0f2;
  --text:     #1d1d1f;
  --text2:    #6e6e73;
  --text3:    #86868b;
  --blue:     #0071e3;
  --blue-h:   #0077ed;
  --blue-lt:  #e8f1fb;
  --green:    #34c759;
  --red:      #ff3b30;
  --orange:   #ff9500;
  --border:   rgba(0,0,0,.1);
  --border2:  rgba(0,0,0,.06);
  --shadow:   0 2px 20px rgba(0,0,0,.08);
  --shadow-h: 0 8px 30px rgba(0,0,0,.13);
  --r:        12px;
  --r-lg:     20px;
  --font:     -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Inter', sans-serif;
  --font-mono:'SF Mono','Fira Code','Courier New',monospace;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { background: var(--bg); color: var(--text); font-family: var(--font); font-size: 17px; line-height: 1.6; overflow-x: hidden; -webkit-font-smoothing: antialiased; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; font-family: var(--font); }
img { max-width: 100%; }
h1,h2,h3,h4 { font-weight: 700; line-height: 1.05; letter-spacing: -.03em; }

/* ── Typography scale ── */
.t-super  { font-size: clamp(52px, 8vw, 96px); font-weight: 700; letter-spacing: -.05em; line-height: 1; }
.t-title  { font-size: clamp(36px, 5vw, 64px); font-weight: 700; letter-spacing: -.04em; line-height: 1.05; }
.t-head   { font-size: clamp(24px, 3vw, 40px); font-weight: 700; letter-spacing: -.02em; }
.t-body   { font-size: 17px; line-height: 1.6; color: var(--text2); }
.t-caption{ font-size: 12px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--blue); }

/* ── Nav ── */
.site-nav {
  position: sticky; top: 0; z-index: 200;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 2.5rem; height: 52px;
  background: rgba(255,255,255,.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border2);
}
.site-nav .nav-logo { font-size: 1.1rem; font-weight: 700; letter-spacing: -.03em; color: var(--text); }
.site-nav .nav-logo b { color: var(--blue); font-weight: 700; }
.site-nav .nav-links { display: flex; gap: 1.75rem; list-style: none; }
.site-nav .nav-links a { font-size: .9rem; color: var(--text2); font-weight: 400; transition: color .15s; }
.site-nav .nav-links a:hover { color: var(--text); }
.site-nav .nav-links a.active { color: var(--text); font-weight: 500; }
.site-nav .nav-cta {
  font-size: .875rem; font-weight: 400; color: var(--blue);
  background: none; border: none; padding: .35rem .75rem;
  border-radius: 980px; transition: background .15s;
}
.site-nav .nav-cta:hover { background: var(--blue-lt); }
.site-nav .nav-cta.filled { background: var(--blue); color: #fff; }
.site-nav .nav-cta.filled:hover { background: var(--blue-h); }
.mobile-menu-btn { display: none; width: 38px; height: 38px; border: 1px solid var(--border2); border-radius: 50%; background: var(--bg2); color: var(--text); align-items: center; justify-content: center; flex-direction: column; gap: 4px; padding: 0; }
.mobile-menu-btn span { width: 16px; height: 2px; border-radius: 2px; background: currentColor; transition: transform .18s, opacity .18s; }
.mobile-menu-btn.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.mobile-menu-btn.open span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.mobile-nav-panel { display: none; position: fixed; left: 1rem; right: 1rem; top: 62px; z-index: 190; background: rgba(255,255,255,.96); border: 1px solid var(--border2); border-radius: var(--r-lg); box-shadow: var(--shadow-h); padding: .65rem; backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); }
.mobile-nav-panel.open { display: block; }
.mobile-nav-panel a { display: flex; align-items: center; justify-content: space-between; min-height: 44px; padding: .65rem .85rem; border-radius: 10px; color: var(--text); font-size: 15px; font-weight: 600; }
.mobile-nav-panel a:hover, .mobile-nav-panel a.active { background: var(--bg3); }
.mobile-nav-panel .mobile-nav-cta { margin-top: .35rem; background: var(--blue); color: #fff; justify-content: center; }

.lead-modal-overlay { position: fixed; inset: 0; z-index: 99980; display: none; align-items: center; justify-content: center; padding: 1.25rem; background: rgba(0,0,0,.55); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.lead-modal-overlay.open { display: flex; }
.lead-modal { width: min(100%, 520px); background: var(--bg2); border: 1px solid var(--border2); border-radius: var(--r-lg); box-shadow: var(--shadow-h); padding: 1.5rem; position: relative; color: var(--text); }
.lead-modal-close { position: absolute; top: .9rem; right: .9rem; width: 34px; height: 34px; border: 1px solid var(--border2); border-radius: 50%; background: var(--bg3); color: var(--text2); font-size: 20px; line-height: 1; }
.lead-modal-kicker { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .07em; color: var(--blue); margin-bottom: .45rem; }
.lead-modal-title { font-size: 28px; font-weight: 800; letter-spacing: -.04em; line-height: 1.1; margin-bottom: .55rem; padding-right: 2rem; }
.lead-modal-sub { font-size: 14px; color: var(--text2); line-height: 1.55; margin-bottom: 1.1rem; }
.lead-modal .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.lead-modal-ok { display: none; margin-top: .75rem; color: #1a7a32; text-align: center; font-size: 14px; font-weight: 600; }

/* ── Buttons ── */
.btn { display: inline-flex; align-items: center; gap: .45rem; font-size: 18px; font-weight: 400; border-radius: 980px; padding: .7rem 1.4rem; border: none; cursor: pointer; font-family: var(--font); transition: all .2s; white-space: nowrap; }
.btn-blue  { background: var(--blue); color: #fff; }
.btn-blue:hover  { background: var(--blue-h); transform: scale(1.02); }
.btn-ghost { background: none; border: 1.5px solid var(--border); color: var(--text); }
.btn-ghost:hover { background: rgba(0,0,0,.04); }
.btn-text  { background: none; color: var(--blue); padding: .5rem 0; border-radius: 0; border-bottom: 1px solid transparent; }
.btn-text:hover { border-bottom-color: var(--blue); }
.btn-sm { font-size: 14px; padding: .5rem 1rem; }
.btn-lg { font-size: 19px; padding: .85rem 1.75rem; }

/* ── Cards ── */
.card { background: var(--bg2); border-radius: var(--r-lg); box-shadow: var(--shadow); overflow: hidden; transition: box-shadow .25s, transform .25s; }
.card:hover { box-shadow: var(--shadow-h); }
.card-lift:hover { transform: translateY(-4px); }
.card-pad { padding: 2rem; }

/* ── Forms ── */
.f-group { display: flex; flex-direction: column; gap: .35rem; margin-bottom: 1rem; }
.f-label { font-size: 12px; font-weight: 600; color: var(--text2); letter-spacing: .02em; }
.f-input, .f-select, .f-textarea {
  background: var(--bg3); border: 1px solid var(--border);
  color: var(--text); padding: .85rem 1rem;
  border-radius: 10px; font-size: 17px;
  font-family: var(--font); outline: none; width: 100%;
  transition: border-color .2s, box-shadow .2s;
}
.f-input:focus, .f-select:focus, .f-textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(0,113,227,.15);
  background: var(--bg2);
}
.f-input::placeholder, .f-textarea::placeholder { color: var(--text3); }
.f-textarea { resize: vertical; min-height: 100px; line-height: 1.5; }

/* ── Section ── */
.section { padding: 100px 2.5rem; max-width: 1200px; margin: 0 auto; }
.section-sm { padding: 60px 2.5rem; max-width: 1200px; margin: 0 auto; }
.section-full { padding: 100px 2.5rem; }

/* ── Tags / badges ── */
.badge { display: inline-block; font-size: 12px; font-weight: 600; padding: .25rem .65rem; border-radius: 980px; letter-spacing: .02em; }
.badge-blue  { background: var(--blue-lt); color: var(--blue); }
.badge-gray  { background: var(--bg3); color: var(--text2); }
.badge-green { background: rgba(52,199,89,.12); color: #1a7a32; }

/* ── Divider ── */
.hr { border: none; border-top: 1px solid var(--border2); margin: 0; }

/* ── Footer ── */
.site-footer {
  background: var(--text); color: rgba(255,255,255,.7);
  padding: 48px 2.5rem;
}
.site-footer-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; }
.site-footer .f-logo { font-size: 1rem; font-weight: 700; color: #fff; letter-spacing: -.03em; }
.site-footer .f-logo b { color: var(--blue); }
.site-footer-links { display: flex; gap: 1.5rem; }
.site-footer-links a { font-size: 14px; color: rgba(255,255,255,.55); transition: color .15s; }
.site-footer-links a:hover { color: rgba(255,255,255,.85); }
.site-footer-copy { font-size: 13px; }

/* ── Service pages ── */
.service-hero { max-width: 1200px; margin: 0 auto; padding: 72px 2.5rem 44px; display: grid; grid-template-columns: 1.1fr .9fr; gap: 4rem; align-items: start; }
.service-bc { font-size: 13px; color: var(--text2); margin-bottom: 1.5rem; display: flex; gap: .4rem; flex-wrap: wrap; }
.service-bc a { color: var(--text2); }
.service-bc a:hover { color: var(--blue); }
.service-label { font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--blue); margin-bottom: .85rem; }
.service-hero h1 { font-size: clamp(36px,5.2vw,64px); letter-spacing: -.04em; margin-bottom: 1rem; }
.service-lead { font-size: 19px; color: var(--text2); line-height: 1.6; max-width: 58ch; margin-bottom: 2rem; }
.service-panel { background: var(--bg2); border: 1px solid var(--border2); border-radius: var(--r-lg); padding: 1.5rem; box-shadow: var(--shadow); }
.service-panel-title { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--text2); margin-bottom: 1rem; }
.service-kpis { display: grid; gap: .75rem; }
.service-kpi { border-top: 1px solid var(--border2); padding-top: .75rem; }
.service-kpi strong { display: block; font-size: 22px; letter-spacing: -.03em; color: var(--text); }
.service-kpi span { display: block; font-size: 13px; color: var(--text2); line-height: 1.5; }
.service-section { max-width: 1200px; margin: 0 auto; padding: 56px 2.5rem; }
.service-section.band { max-width: 100%; background: var(--bg2); }
.service-inner { max-width: 1200px; margin: 0 auto; }
.service-head { display: flex; justify-content: space-between; gap: 2rem; align-items: end; margin-bottom: 2rem; }
.service-head h2 { font-size: clamp(28px,3.5vw,42px); letter-spacing: -.03em; max-width: 12ch; }
.service-head p { color: var(--text2); max-width: 54ch; line-height: 1.6; }
.service-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.25rem; }
.service-card { background: var(--bg2); border: 1px solid var(--border2); border-radius: var(--r-lg); padding: 1.5rem; }
.band .service-card { background: var(--bg); }
.service-card h3 { font-size: 18px; letter-spacing: -.02em; margin-bottom: .55rem; }
.service-card p, .service-card li { font-size: 14px; color: var(--text2); line-height: 1.6; }
.service-card ul { padding-left: 1.1rem; }
.service-process { display: grid; grid-template-columns: repeat(4,1fr); gap: 1rem; counter-reset: step; }
.service-step { border-top: 2px solid var(--blue); padding-top: 1rem; }
.service-step::before { counter-increment: step; content: "0" counter(step); display: block; color: var(--blue); font-size: 12px; font-weight: 700; letter-spacing: .08em; margin-bottom: .65rem; }
.service-step h3 { font-size: 17px; margin-bottom: .45rem; }
.service-step p { font-size: 14px; color: var(--text2); line-height: 1.6; }
.faq-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 1rem; }
.faq-item { background: var(--bg2); border: 1px solid var(--border2); border-radius: var(--r-lg); padding: 1.35rem; }
.faq-item h3 { font-size: 16px; letter-spacing: -.01em; margin-bottom: .5rem; }
.faq-item p { font-size: 14px; color: var(--text2); line-height: 1.6; }
.deliverables { display: grid; grid-template-columns: repeat(3,1fr); gap: 1rem; }
.deliverable { background: var(--bg); border: 1px solid var(--border2); border-radius: var(--r-lg); padding: 1.35rem; }
.deliverable strong { display: block; font-size: 16px; margin-bottom: .45rem; }
.deliverable span { display: block; font-size: 14px; color: var(--text2); line-height: 1.6; }
.service-cta { background: var(--text); color: #fff; text-align: center; padding: 72px 2.5rem; }
.service-cta h2 { font-size: clamp(28px,4vw,44px); margin-bottom: .75rem; }
.service-cta p { color: rgba(255,255,255,.6); max-width: 48ch; margin: 0 auto 1.75rem; }
@media (max-width: 900px) {
  .service-hero { grid-template-columns: 1fr; gap: 2rem; padding-left: 1.25rem; padding-right: 1.25rem; }
  .service-section { padding-left: 1.25rem; padding-right: 1.25rem; }
  .service-head { display: block; }
  .service-head h2 { max-width: none; margin-bottom: .75rem; }
  .service-grid, .service-process, .faq-grid, .deliverables { grid-template-columns: 1fr; }
  .service-cta { padding-left: 1.25rem; padding-right: 1.25rem; }
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: rgba(0,0,0,.15); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0,0,0,.25); }

/* ── Reveal animation ── */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .site-nav { padding: 0 1.25rem; }
  .site-nav .nav-links { display: none; }
  .site-nav .nav-cta { display: none; }
  .mobile-menu-btn { display: inline-flex; }
  .lead-modal .form-row { grid-template-columns: 1fr; gap: 0; }
  .section, .section-sm, .section-full { padding-left: 1.25rem; padding-right: 1.25rem; }
  .t-super { font-size: clamp(40px,10vw,72px); }
  .btn { font-size: 15px; }
}