/* ══════ CharlieFlow · Base ══════ */

/* ── Reset ── */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);background:var(--cream);color:var(--ink);
  line-height:1.6;font-size:17px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
body.lock{overflow:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
::selection{background:var(--accent);color:var(--ink)}
*:focus-visible{outline:2px solid var(--accent-deep);outline-offset:3px;border-radius:4px}

/* ── Container ── */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
section{scroll-margin-top:92px}

/* ── Grain texture ── */
.grain{position:fixed;inset:0;z-index:9998;pointer-events:none;opacity:.04;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}

/* ── Scroll progress ── */
.progress{position:fixed;top:0;left:0;height:3px;width:0;background:var(--accent);z-index:9997;transition:width .1s}

/* ── Highlight ── */
.hl{background:var(--accent);padding:.02em .14em;border-radius:3px;
  box-decoration-break:clone;-webkit-box-decoration-break:clone}

/* ── Tooltip ── */
.tip{position:relative;border-bottom:1px dotted var(--ink-faint);cursor:help}
.tip::after{content:attr(data-tip);position:absolute;left:50%;bottom:calc(100% + 10px);
  transform:translateX(-50%) translateY(5px);background:var(--ink);color:var(--cream);
  font-family:var(--sans);font-size:12.5px;line-height:1.5;width:210px;padding:11px 13px;border-radius:9px;
  opacity:0;pointer-events:none;transition:.2s;z-index:30;box-shadow:0 16px 36px -14px rgba(0,0,0,.55);font-weight:400}
.tip:hover::after{opacity:1;transform:translateX(-50%) translateY(0)}

/* ── Buttons ── */
.btn{display:inline-flex;align-items:center;gap:9px;font-family:var(--sans);font-weight:600;
  font-size:15px;padding:15px 28px;border-radius:var(--r-pill);border:2px solid transparent;cursor:pointer;
  transition:.22s cubic-bezier(.3,.7,.3,1);line-height:1}
.btn .ar{transition:transform .22s}
.btn:hover .ar{transform:translateX(4px)}
.btn-dark{background:var(--ink);color:var(--cream)}
.btn-dark:hover{background:#000;transform:translateY(-2px)}
.btn-line{border-color:var(--ink);color:var(--ink)}
.btn-line:hover{background:var(--ink);color:var(--cream)}
.btn-lime{background:var(--accent);color:var(--ink)}
.btn-lime:hover{background:#fff;transform:translateY(-2px);box-shadow:0 0 24px rgba(198,242,77,.45)}

/* ── Navigation ── */
header{position:sticky;top:0;z-index:90;background:rgba(241,237,228,.8);
  backdrop-filter:saturate(160%) blur(14px);border-bottom:1px solid transparent;transition:.25s}
header.scrolled{border-color:var(--line);background:rgba(241,237,228,.94)}
.nav{display:flex;align-items:center;justify-content:space-between;height:76px}
.logo{font-family:var(--display);font-weight:700;font-size:22px;letter-spacing:-.02em;display:flex;align-items:center;gap:9px;z-index:101;position:relative}
.logo .b{width:13px;height:13px;background:var(--accent);border-radius:4px;transform:rotate(45deg);border:2px solid var(--ink)}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a{font-size:15px;color:var(--ink-soft);font-weight:500;transition:.15s}
.nav-links a:hover{color:var(--ink)}
.nav-links a.active{color:var(--ink);border-bottom:2px solid var(--accent);padding-bottom:4px}
.nav-cta{display:flex;align-items:center;gap:16px}

/* Hamburger */
.menu-btn{display:none;background:none;border:none;width:30px;height:30px;cursor:pointer;color:var(--ink);z-index:101;position:relative}
.menu-btn span{display:block;width:24px;height:2px;background:var(--ink);margin:5px auto;transition:.3s}
body.menu-open .menu-btn span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.menu-open .menu-btn span:nth-child(2){opacity:0}
body.menu-open .menu-btn span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Mobile nav */
.mobile-nav{position:fixed;inset:0;z-index:100;background:var(--cream);
  display:flex;flex-direction:column;justify-content:center;gap:2px;padding:0 32px;
  opacity:0;pointer-events:none;transition:opacity .35s}
body.menu-open .mobile-nav{opacity:1;pointer-events:auto}
.mobile-nav a{font-family:var(--display);font-weight:700;font-size:1.6rem;color:var(--ink);
  padding:13px 0;border-bottom:1px solid var(--line);opacity:0;transform:translateY(20px);transition:.45s cubic-bezier(.2,.7,.2,1)}
body.menu-open .mobile-nav a{opacity:1;transform:none}
body.menu-open .mobile-nav a:nth-child(1){transition-delay:.06s}
body.menu-open .mobile-nav a:nth-child(2){transition-delay:.1s}
body.menu-open .mobile-nav a:nth-child(3){transition-delay:.14s}
body.menu-open .mobile-nav a:nth-child(4){transition-delay:.18s}
body.menu-open .mobile-nav a:nth-child(5){transition-delay:.22s}
.mobile-nav .mn-cta{margin-top:24px;border:none;font-size:1.3rem;opacity:0;transform:translateY(20px);transition:.45s .28s cubic-bezier(.2,.7,.2,1)}
body.menu-open .mobile-nav .mn-cta{opacity:1;transform:none}

@media(max-width:600px){
  .nav-links,.nav-cta{display:none}
  .menu-btn{display:block}
}

/* ── Footer ── */
footer{background:var(--dark);color:var(--cream);padding:80px 0 48px}
footer a{color:var(--ink-faint);transition:color .15s}
footer a:hover{color:var(--cream)}