/* ===========================================================================
   MountSix — nearshore Salesforce capacity
   Design system adapted from sierra.ai's token set:
     · warm-neutral greys (#f6f5f3 / #e4e0dc), ink at #222 rather than pure black
     · GT America -> Geist; GT America Mono -> Geist Mono (labels only)
     · two weights only, 400 and 500 — nothing is bold
     · large display type on tight negative tracking
     · hairline borders, near-invisible blue-tinted shadows, generous section padding
   =========================================================================== */

/* ---------- tokens ---------- */
:root {
  /* neutrals — warm, not cool */
  --white:       #ffffff;
  --gray-100:    #f6f5f3;
  --gray-150:    #eeeeee;
  --gray-200:    #e4e0dc;
  --gray-250:    #c1bcb7;
  --gray-300:    #898683;
  --gray-350:    #716f6c;
  --gray-400:    #625e5b;
  --gray-700:    #302e2d;
  --black:       #222222;

  /* accent — MountSix blue, sitting in sierra's blue ramp */
  --blue-50:     #fafbff;
  --blue-100:    #f3f9fe;
  --blue-200:    #ecf6fe;
  --blue-400:    #8bbff5;
  --blue-600:    #4584c6;
  --blue-700:    #345eb2;
  --blue-800:    #2a4c90;

  --green-500:   #006838;
  --green-50:    #e4eee6;

  --ink:         var(--black);
  --ink-muted:   var(--gray-400);
  --ink-faint:   var(--gray-300);
  --rule:        var(--gray-200);
  --surface:     var(--white);
  --surface-alt: var(--gray-100);

  /* type */
  --font-sans: "Geist", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --fs-display:     clamp(2.75rem, 6.4vw, 5.25rem);   /* hero */
  --fs-headline-xl: clamp(2rem,   4.2vw, 3.25rem);    /* section heads */
  --fs-headline-lg: clamp(1.5rem, 2.4vw, 2rem);
  --fs-headline-md: clamp(1.25rem,1.8vw, 1.5rem);
  --fs-headline-sm: clamp(1.125rem,1.4vw,1.375rem);
  --fs-body-lg:     clamp(1.0625rem, 1.1vw, 1.25rem);
  --fs-body-md:     1.0625rem;
  --fs-body-sm:     0.9375rem;
  --fs-label:       0.75rem;

  /* rhythm */
  --pad-section: clamp(4rem, 8vw, 7.5rem);
  --gutter:      clamp(1.25rem, 4vw, 2.5rem);
  --measure:     72rem;
  --nav-h:       4.5rem;

  /* radii — sierra's ramp */
  --r-sm: .25rem;
  --r-md: .375rem;
  --r-lg: .5rem;
  --r-xl: .75rem;
  --r-2xl: 1rem;
  --r-3xl: 1.5rem;
  --r-pill: 999px;

  /* the diffuse blue-tinted product shadow */
  --shadow-product:
    0 180px 84px 0 #0f4f8a05,
    0 75px 63px 0 #0f4f8a0d,
    0 28px 34px 0 #0f4f8a0e,
    0 6px 12px 0 #0f4f8a0a;
  --shadow-card: 0 1px 2px #0f4f8a08, 0 12px 24px -12px #0f4f8a14;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 1rem); }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-body-md);
  font-weight: 400;
  line-height: 1.55;
  color: var(--ink-muted);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01", "cv01";
}
img, svg { max-width: 100%; height: auto; display: block; }
button, input, textarea, select { font: inherit; color: inherit; }

h1, h2, h3, h4, h5 {
  margin: 0;
  color: var(--ink);
  font-weight: 400;          /* sierra never goes bold */
  letter-spacing: -0.02em;
  line-height: 1.1;
}
h3, h4, h5 { letter-spacing: -0.01em; line-height: 1.25; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }

/* ---------- primitives ---------- */
.wrap { width: 100%; max-width: var(--measure); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: var(--pad-section); }
.section--alt { background: var(--surface-alt); }
.section--tight { padding-block: clamp(2.5rem, 5vw, 4rem); }
.rule-top { border-top: 1px solid var(--rule); }

.label {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.display    { font-size: var(--fs-display);     letter-spacing: -0.03em; }
.headline-xl{ font-size: var(--fs-headline-xl); }
.headline-lg{ font-size: var(--fs-headline-lg); }
.headline-md{ font-size: var(--fs-headline-md); }
.headline-sm{ font-size: var(--fs-headline-sm); }
.lead       { font-size: var(--fs-body-lg); color: var(--ink-muted); }
.small      { font-size: var(--fs-body-sm); }
.faint      { color: var(--ink-faint); }
.ink        { color: var(--ink); }
.accent     { color: var(--blue-700); }
.mono       { font-family: var(--font-mono); }

.stack > * + * { margin-top: 1rem; }
.stack-lg > * + * { margin-top: 1.5rem; }

.section-head { max-width: 46rem; }
.section-head .label { display: block; margin-bottom: 1.25rem; }
.section-head p { margin-top: 1.25rem; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .8125rem 1.375rem;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  font-size: var(--fs-body-sm);
  font-weight: 500;
  letter-spacing: -0.01em;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--ink); color: var(--white); }
.btn--primary:hover { background: var(--gray-700); }
.btn--accent  { background: var(--blue-700); color: var(--white); }
.btn--accent:hover { background: var(--blue-800); }
.btn--ghost   { background: transparent; color: var(--ink); border-color: var(--gray-250); }
.btn--ghost:hover { border-color: var(--ink); background: var(--white); }
.btn--invert  { background: var(--white); color: var(--ink); }
.btn--invert:hover { background: var(--gray-100); }
.btn--sm { padding: .5625rem 1rem; }
.btn .arw { transition: transform .18s ease; }
.btn:hover .arw { transform: translateX(2px); }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 60;
  height: var(--nav-h);
  display: flex; align-items: center;
  background: rgba(255,255,255,.82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease, background-color .2s ease;
}
.nav.is-stuck { border-bottom-color: var(--rule); }
.nav .wrap { display: flex; align-items: center; gap: 2rem; }
.nav__brand { display: flex; align-items: center; gap: .625rem; margin-right: auto; }
.nav__brand img { height: 20px; width: auto; }
.nav__links { display: flex; align-items: center; gap: 1.75rem; }
.nav__links a {
  font-size: var(--fs-body-sm); color: var(--gray-350);
  transition: color .15s ease;
}
.nav__links a:hover { color: var(--ink); }
.nav__cta { display: flex; align-items: center; gap: .75rem; }
.nav__toggle {
  display: none; background: none; border: 0; padding: .5rem; margin-right: -.5rem;
  cursor: pointer; color: var(--ink);
}
.nav__toggle svg { width: 22px; height: 22px; }

@media (max-width: 900px) {
  .nav__links, .nav__cta { display: none; }
  .nav__toggle { display: block; }
  .nav.is-open .nav__links {
    display: flex; flex-direction: column; align-items: flex-start; gap: 0;
    position: absolute; top: var(--nav-h); left: 0; right: 0;
    background: var(--white); border-block: 1px solid var(--rule);
    padding: .5rem var(--gutter) 1.25rem;
  }
  .nav.is-open .nav__links a { padding: .875rem 0; width: 100%; font-size: 1.0625rem; color: var(--ink); border-bottom: 1px solid var(--gray-150); }
  .nav.is-open .nav__cta { display: flex; position: absolute; top: calc(var(--nav-h) + 100%); }
}

/* ---------- hero ---------- */
.hero {
  padding-top: clamp(3.5rem, 7vw, 6.5rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
  position: relative;
}
/* The one gradient: a soft cool glow that bleeds past the fold and fades to
   nothing, so there is never a hard seam where the hero ends. It sits at
   z-index -1, which puts it under the opaque .section--alt bands that follow. */
.hero::after {
  content: ""; position: absolute; left: 0; right: 0; top: 20%; bottom: -14rem;
  background: radial-gradient(ellipse 72% 90% at 50% 30%,
              var(--blue-200) 0%, var(--blue-100) 45%, #ffffff00 76%);
  z-index: -1; pointer-events: none;
}
.hero__inner { max-width: 58rem; }
.hero h1 { margin-top: 1.5rem; }
.hero .lead { margin-top: 1.75rem; max-width: 40rem; }
.hero__actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2.25rem; }
.hero__meta {
  display: flex; flex-wrap: wrap; gap: .5rem 1.75rem;
  margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--rule);
}
.hero__meta span { display: inline-flex; align-items: center; gap: .5rem; }
.hero__meta .dot { width: 5px; height: 5px; border-radius: 50%; background: var(--blue-600); flex: none; }

/* ---------- logo / credential strip ---------- */
.strip { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 2rem; }
.strip__item { display: flex; align-items: center; gap: .75rem; }
.strip__item img { height: 36px; width: auto; }
.strip__item span { font-size: var(--fs-body-sm); color: var(--gray-350); }

.certs { display: flex; flex-wrap: wrap; gap: 1.25rem; align-items: center; }
.certs img { height: 56px; width: auto; }

/* ---------- generic card grids ---------- */
.grid { display: grid; gap: 1.25rem; }
.grid--2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
@media (max-width: 900px) { .grid--3, .grid--4 { grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width: 620px) { .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; } }

.card {
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--r-2xl);
  padding: 1.75rem;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.card:hover { border-color: var(--gray-250); box-shadow: var(--shadow-card); }
.card h3 { margin-bottom: .625rem; }
.card__num {
  font-family: var(--font-mono); font-size: var(--fs-label);
  color: var(--blue-600); letter-spacing: .08em; display: block; margin-bottom: 1.25rem;
}

/* the problem trio — hairline columns, no boxes */
.cols { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 0; }
.cols > div { padding: 2rem 2rem 2rem 0; border-top: 1px solid var(--rule); }
.cols > div + div { border-left: 1px solid var(--rule); padding-left: 2rem; }
.cols h3 { margin-bottom: .75rem; }
.cols .label { display: block; margin-bottom: 1.5rem; }
@media (max-width: 820px) {
  .cols { grid-template-columns: 1fr; }
  .cols > div { padding: 1.75rem 0; }
  .cols > div + div { border-left: 0; padding-left: 0; }
}

/* ---------- pricing ---------- */
.tiers { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 1.25rem; align-items: start; }
@media (max-width: 940px) { .tiers { grid-template-columns: 1fr; max-width: 34rem; margin-inline: auto; } }

.tier {
  background: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--r-3xl);
  padding: 2rem;
  display: flex; flex-direction: column; height: 100%;
}
.tier--featured {
  border-color: var(--blue-400);
  box-shadow: var(--shadow-product);
  position: relative;
}
.tier__flag {
  position: absolute; top: -.75rem; left: 2rem;
  background: var(--blue-700); color: var(--white);
  font-family: var(--font-mono); font-size: 0.6875rem; letter-spacing: .1em; text-transform: uppercase;
  padding: .3125rem .625rem; border-radius: var(--r-sm);
}
.tier__name { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; }
.tier__cap { font-family: var(--font-mono); font-size: var(--fs-body-sm); color: var(--ink-faint); }
.tier__price { margin-top: 1.5rem; display: flex; align-items: baseline; gap: .375rem; }
.tier__price strong { font-size: clamp(2.25rem, 3.4vw, 2.875rem); font-weight: 400; letter-spacing: -0.03em; color: var(--ink); }
.tier__price span { font-size: var(--fs-body-sm); color: var(--ink-faint); }
.tier__rate { margin-top: .5rem; font-family: var(--font-mono); font-size: var(--fs-body-sm); color: var(--ink-faint); }
.tier__list { list-style: none; margin: 1.75rem 0 0; padding: 1.75rem 0 0; border-top: 1px solid var(--rule); display: grid; gap: .75rem; }
.tier__list li { display: flex; gap: .625rem; font-size: var(--fs-body-sm); }
.tier__list svg { flex: none; width: 16px; height: 16px; margin-top: .25rem; color: var(--blue-600); }
.tier__cta { margin-top: 2rem; }
.tier__cta .btn { width: 100%; justify-content: center; }
.tiers-note { margin-top: 1.5rem; text-align: center; font-size: var(--fs-body-sm); }

/* ---------- guarantee band ---------- */
.guarantee {
  background: var(--ink); color: var(--gray-250);
  border-radius: var(--r-3xl);
  padding: clamp(2.5rem, 5vw, 4rem);
}
.guarantee .label { color: var(--gray-300); }
.guarantee blockquote {
  margin: 1.5rem 0 0; color: var(--white);
  font-size: var(--fs-headline-xl); letter-spacing: -0.02em; line-height: 1.15; max-width: 30ch;
}
.guarantee p { margin-top: 1.75rem; max-width: 44rem; }

/* ---------- in / out ---------- */
.scope { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 1.25rem; }
@media (max-width: 760px) { .scope { grid-template-columns: 1fr; } }
.scope__panel { border: 1px solid var(--rule); border-radius: var(--r-2xl); padding: 1.75rem; background: var(--white); }
.scope__panel--out { background: var(--gray-100); }
.scope ul { list-style: none; margin: 1.5rem 0 0; padding: 0; display: grid; gap: .625rem; }
.scope li { font-size: var(--fs-body-sm); padding-left: 1.125rem; position: relative; }
.scope li::before {
  content: ""; position: absolute; left: 0; top: .625rem;
  width: 6px; height: 1px; background: var(--gray-250);
}
.scope__panel--in li::before { background: var(--blue-600); }

/* ---------- process ---------- */
.steps { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 0; counter-reset: step; }
.steps > div { position: relative; padding: 2.25rem 2rem 0 0; border-top: 1px solid var(--ink); }
.steps > div + div { padding-left: 2rem; }
.steps__n {
  font-family: var(--font-mono); font-size: var(--fs-label); letter-spacing: .1em;
  color: var(--ink-faint); display: block; margin-bottom: 1rem;
}
.steps h3 { margin-bottom: .625rem; }
@media (max-width: 820px) {
  .steps { grid-template-columns: 1fr; }
  .steps > div, .steps > div + div { padding: 1.75rem 0 0; }
}

/* ---------- faq ---------- */
.faq { border-top: 1px solid var(--rule); }
.faq details { border-bottom: 1px solid var(--rule); }
.faq summary {
  list-style: none; cursor: pointer;
  padding: 1.5rem 2.5rem 1.5rem 0; position: relative;
  font-size: var(--fs-headline-sm); color: var(--ink); letter-spacing: -0.01em;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; position: absolute; right: .5rem; top: 50%;
  width: 10px; height: 10px; margin-top: -6px;
  border-right: 1px solid var(--gray-300); border-bottom: 1px solid var(--gray-300);
  transform: rotate(45deg); transition: transform .2s ease;
}
.faq details[open] summary::after { transform: rotate(-135deg); margin-top: -2px; }
.faq__a { padding: 0 3rem 1.75rem 0; max-width: 60ch; }

/* ---------- cta band ---------- */
.cta { text-align: center; }
.cta h2 { max-width: 20ch; margin-inline: auto; }
.cta p { margin-top: 1.25rem; max-width: 42ch; margin-inline: auto; }
.cta__actions { display: flex; flex-wrap: wrap; gap: .75rem; justify-content: center; margin-top: 2rem; }

/* ---------- contact form ---------- */
.contact { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(2rem, 6vw, 5rem); align-items: start; }
@media (max-width: 900px) { .contact { grid-template-columns: 1fr; } }
.field { display: grid; gap: .5rem; margin-bottom: 1rem; }
.field label { font-size: var(--fs-body-sm); color: var(--gray-350); }
.field input, .field textarea {
  width: 100%; padding: .8125rem 1rem;
  background: var(--white);
  border: 1px solid var(--gray-200); border-radius: var(--r-lg);
  font-size: var(--fs-body-md); color: var(--ink);
  transition: border-color .15s ease, box-shadow .15s ease;
}
.field input:focus, .field textarea:focus {
  outline: none; border-color: var(--blue-600);
  box-shadow: 0 0 0 3px var(--blue-200);
}
.field textarea { resize: vertical; min-height: 8rem; }
.form-note { margin-top: 1rem; font-size: var(--fs-body-sm); }
.form-status { margin-top: 1rem; font-size: var(--fs-body-sm); color: var(--green-500); display: none; }
.form-status.is-visible { display: block; }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--rule); padding-block: clamp(3rem, 5vw, 4rem) 2.5rem; }
.footer__top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2.5rem; }
@media (max-width: 760px) { .footer__top { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .footer__top { grid-template-columns: 1fr; } }
.footer__brand img { height: 20px; width: auto; margin-bottom: 1rem; }
.footer h4 { font-size: var(--fs-body-sm); color: var(--ink); margin-bottom: 1rem; }
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .625rem; }
.footer a { font-size: var(--fs-body-sm); color: var(--gray-350); transition: color .15s ease; }
.footer a:hover { color: var(--ink); }
.footer__bottom {
  margin-top: clamp(2.5rem, 5vw, 4rem); padding-top: 1.5rem; border-top: 1px solid var(--rule);
  display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between;
  font-size: var(--fs-body-sm); color: var(--ink-faint);
}

/* ---------- motion ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s cubic-bezier(.2,.6,.2,1), transform .6s cubic-bezier(.2,.6,.2,1); }
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
  .reveal { opacity: 1; transform: none; }
}