/* ═══════════════════════════════════════
   BLACK HILL CONSULTING — Swiss Design System
   ═══════════════════════════════════════ */

:root {
  --black:     #0D0221;
  --white:     #FFFFFF;
  --red:       #FF2D78;
  --red-dark:  #D91B5F;
  --blue:      #00B4D8;
  --gray-100:  #F4F4F4;
  --gray-200:  #E8E8E8;
  --gray-400:  #999999;
  --gray-600:  #555555;

  --font:      'Inter', Helvetica Neue, Arial, sans-serif;

  --size-xs:   0.75rem;
  --size-sm:   0.875rem;
  --size-base: 1rem;
  --size-lg:   1.25rem;
  --size-xl:   1.5rem;
  --size-2xl:  2rem;
  --size-3xl:  3rem;
  --size-4xl:  4rem;
  --size-5xl:  5.5rem;

  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2.5rem;
  --space-xl:  4rem;
  --space-2xl: 7rem;

  --radius:    2px;
  --transition: 0.2s ease;
  --max-width: 1200px;
}

/* RESET */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font); background: var(--white); color: var(--black); 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 { cursor: pointer; font-family: var(--font); border: none; background: none; }

/* ── TYPOGRAPHY ── */
h1, h2, h3 { line-height: 1.1; font-weight: 900; letter-spacing: -0.03em; }
h1 { font-size: clamp(var(--size-3xl), 8vw, var(--size-5xl)); }
h2 { font-size: clamp(var(--size-2xl), 5vw, var(--size-4xl)); }
h3 { font-size: var(--size-xl); font-weight: 700; }
p  { font-size: var(--size-base); color: var(--gray-600); line-height: 1.7; }
em { font-style: normal; color: var(--red); }

/* ── BUTTONS ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.875rem 1.75rem;
  font-size: var(--size-sm); font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase;
  border-radius: var(--radius);
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  white-space: nowrap;
}
.btn--primary  { background: var(--red); color: var(--white); }
.btn--primary:hover { background: var(--red-dark); }
.btn--ghost    { background: transparent; color: var(--black); border: 2px solid var(--black); }
.btn--ghost:hover  { background: var(--black); color: var(--white); }
.btn--call     { background: var(--blue); color: var(--white); border: 2px solid var(--blue); }
.btn--call:hover   { background: #009ab8; border-color: #009ab8; color: var(--white); }
.btn--nav      { background: var(--black); color: var(--white); padding: 0.625rem 1.25rem; font-size: var(--size-xs); }
.btn--nav:hover { background: var(--red); }
.btn--full     { width: 100%; }
.btn__loading  { display: none; }
.btn.loading .btn__text    { display: none; }
.btn.loading .btn__loading { display: inline; }

/* ── LAYOUT ── */
.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg);
}
.section-inner--split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}
.section__label {
  font-size: var(--size-xs); font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--blue);
  margin-bottom: var(--space-sm);
}
.section__title { margin-bottom: var(--space-md); }

/* ── NAV ── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  transition: box-shadow var(--transition);
}
.nav.scrolled { box-shadow: 0 2px 16px rgba(0,0,0,0.08); }
.nav__inner {
  max-width: var(--max-width); margin: 0 auto;
  padding: var(--space-sm) var(--space-lg);
  display: flex; align-items: center; gap: var(--space-lg);
}
.nav__logo { display: flex; align-items: center; gap: var(--space-xs); text-decoration: none; }
.nav__logo-mark {
  font-size: var(--size-lg); font-weight: 900; letter-spacing: -0.05em;
  background: linear-gradient(135deg, var(--red), var(--blue));
  color: var(--white);
  padding: 0.2rem 0.5rem; border-radius: var(--radius);
}
.nav__logo-text { font-weight: 700; font-size: var(--size-sm); display: none; }
.nav__links { display: flex; gap: var(--space-lg); margin-left: auto; }
.nav__links a { font-size: var(--size-sm); font-weight: 500; transition: color var(--transition); }
.nav__links a:hover { color: var(--blue); }
.nav__burger { display: none; flex-direction: column; gap: 5px; padding: 4px; }
.nav__burger span { display: block; width: 22px; height: 2px; background: var(--black); transition: var(--transition); }

/* ── HERO ── */
.hero {
  padding-top: 80px;
  background: linear-gradient(135deg, var(--black) 0%, #1a0533 40%, #0a1a3a 100%);
  border-bottom: none;
}
.hero__headline { color: var(--white); }
.hero__sub { color: rgba(255,255,255,0.75); }
.hero__eyebrow { color: var(--blue); }
.hero__stat-block { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.15); }
.stat { background: rgba(255,255,255,0.06); }
.stat__num { color: var(--white); }
.stat__label { color: rgba(255,255,255,0.5); }
.hero .btn--ghost { color: var(--white); border-color: rgba(255,255,255,0.4); }
.hero .btn--ghost:hover { background: var(--white); color: var(--black); }
.hero__grid {
  max-width: var(--max-width); margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-xl);
  align-items: center;
}
.hero__eyebrow {
  font-size: var(--size-xs); font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--red);
  margin-bottom: var(--space-md);
}
.hero__headline { margin-bottom: var(--space-md); }
.hero__sub { font-size: var(--size-lg); max-width: 540px; margin-bottom: var(--space-lg); color: var(--gray-600); }
.hero__cta-group { display: flex; gap: var(--space-sm); flex-wrap: wrap; }
.hero__stat-block {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1px;
  background: var(--gray-200);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  min-width: 240px;
}
.stat {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: var(--space-md);
  background: var(--white);
  gap: 0.25rem;
}
.stat__num { font-size: var(--size-3xl); font-weight: 900; letter-spacing: -0.04em; line-height: 1; color: var(--black); }
.stat__label { font-size: var(--size-xs); font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--gray-400); }

/* ── BRANDS ── */
.brands { background: var(--gray-100); }
.brands__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 1px;
  background: var(--gray-200);
  border: 1px solid var(--gray-200);
  margin-top: var(--space-lg);
  border-radius: var(--radius);
  overflow: hidden;
}
.brand-tile {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 0.75rem; padding: var(--space-md);
  background: var(--white);
  transition: background var(--transition);
}
.brand-tile:hover { background: var(--gray-100); }
.brand-tile img { height: 28px; width: auto; max-width: 100px; object-fit: contain; filter: grayscale(100%); opacity: 0.7; transition: filter var(--transition), opacity var(--transition); }
.brand-tile:hover img { filter: grayscale(0%); opacity: 1; }
.brand-tile span { font-size: var(--size-xs); font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--gray-600); }
.brand-tile--more { background: var(--black); }
.brand-tile--more span { color: var(--white); }
.brand-tile__plus { font-size: var(--size-3xl); font-weight: 900; color: var(--red); line-height: 1; }

/* ── WHY ── */
.why { background: var(--white); }
.why__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-lg); margin-top: var(--space-lg); }
.why__card { padding: var(--space-lg) 0; border-top: 3px solid var(--gray-200); transition: border-color var(--transition); }
.why__card:hover { border-color: var(--blue); }
.why__num { display: block; font-size: var(--size-xs); font-weight: 700; letter-spacing: 0.1em; color: var(--blue); margin-bottom: var(--space-sm); }
.why__card h3 { margin-bottom: var(--space-xs); font-size: var(--size-lg); }
.why__card p { font-size: var(--size-sm); }

/* ── FORM ── */
.form-section { background: linear-gradient(135deg, #0a1a3a 0%, #0D0221 100%); }
.form-section .section__label { color: var(--blue); }
.form-section .section__title { color: var(--white); }
.form-section p { color: rgba(255,255,255,0.6); }
.form-section__sub { font-style: italic; margin-top: var(--space-xs); }
.lead-form { display: flex; flex-direction: column; gap: var(--space-md); }
.form__group { display: flex; flex-direction: column; gap: 0.375rem; }
.form__group label { font-size: var(--size-xs); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.5); }
.form__group label span { color: var(--red); }
.form__group input, .form__group select, .form__group textarea {
  padding: 0.875rem 1rem;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius);
  color: var(--white);
  font-family: var(--font);
  font-size: var(--size-base);
  transition: border-color var(--transition), background var(--transition);
  outline: none;
  -webkit-appearance: none;
}
.form__group select { cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23ffffff' d='M6 8L0 0h12z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 1rem center; padding-right: 2.5rem; }
.form__group select option { background: #1a1a1a; color: var(--white); }
.form__group input::placeholder, .form__group textarea::placeholder { color: rgba(255,255,255,0.25); }
.form__group input:focus, .form__group select:focus, .form__group textarea:focus { border-color: var(--blue); background: rgba(0,180,216,0.08); }
.form__group input.error, .form__group select.error { border-color: #FF4444; }
.form__error { font-size: var(--size-xs); color: #FF6666; display: none; }
.form__error.visible { display: block; }
.form__group textarea { resize: vertical; min-height: 80px; }
/* Honeypot: visually hidden but not display:none so bots still find and fill it */
.form__honeypot {
  position: absolute;
  left: -9999px;
  top: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  tab-size: 0;
}
.form__privacy { font-size: var(--size-xs); color: rgba(255,255,255,0.3); text-align: center; }
.form__privacy a { color: rgba(255,255,255,0.5); text-decoration: underline; }
.form__success { display: none; text-align: center; padding: var(--space-md); background: rgba(0,180,0,0.15); border: 1px solid rgba(0,200,0,0.3); border-radius: var(--radius); color: #66ff88; font-weight: 600; }
.form__success.visible { display: block; }

/* ── HOW ── */
.how { background: var(--gray-100); }
.how__steps { display: flex; flex-direction: column; gap: 0; margin-top: var(--space-lg); border: 1px solid var(--gray-200); border-radius: var(--radius); overflow: hidden; }
.how__step { display: flex; align-items: flex-start; gap: var(--space-lg); padding: var(--space-lg); background: var(--white); border-bottom: 1px solid var(--gray-200); transition: background var(--transition); }
.how__step:last-child { border-bottom: none; }
.how__step:hover { background: var(--gray-100); }
.how__step-num { font-size: var(--size-3xl); font-weight: 900; color: var(--gray-200); line-height: 1; min-width: 70px; }
.how__step h3 { margin-bottom: 0.25rem; font-size: var(--size-lg); }
.how__step p { font-size: var(--size-sm); }

/* ── FAQ ── */
.faq { background: var(--white); }
.faq__list { margin-top: var(--space-lg); max-width: 760px; }
.faq__item { border-bottom: 1px solid var(--gray-200); }
.faq__item:first-child { border-top: 1px solid var(--gray-200); }
.faq__question {
  display: flex; justify-content: space-between; align-items: center;
  width: 100%; padding: var(--space-md) 0;
  font-size: var(--size-base); font-weight: 600; color: var(--black);
  text-align: left; gap: var(--space-md);
  background: none; border: none; cursor: pointer;
  transition: color var(--transition);
}
.faq__question:hover { color: var(--blue); }
.faq__icon {
  flex-shrink: 0; width: 20px; height: 20px; position: relative;
}
.faq__icon::before,
.faq__icon::after {
  content: ''; position: absolute; background: currentColor;
  transition: transform var(--transition), opacity var(--transition);
}
.faq__icon::before { width: 2px; height: 14px; top: 3px; left: 9px; }
.faq__icon::after  { width: 14px; height: 2px; top: 9px; left: 3px; }
.faq__question[aria-expanded="true"] .faq__icon::before { transform: rotate(90deg); opacity: 0; }
.faq__answer { padding-bottom: var(--space-md); }
.faq__answer p { font-size: var(--size-sm); }
@media (max-width: 768px) {
  .faq__question { font-size: var(--size-sm); }
}

/* ── INSTAGRAM ── */
.instagram { background: var(--white); text-align: center; }
.instagram .section-inner { display: flex; flex-direction: column; align-items: center; gap: var(--space-lg); }
.instagram__sub { max-width: 480px; }
.instagram__feed { width: 100%; max-width: 800px; }
.instagram__placeholder { display: block; text-decoration: none; }
.ig-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 3px; margin-bottom: var(--space-sm); }
.ig-tile {
  aspect-ratio: 1; background: var(--gray-100);
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem;
  border-radius: var(--radius);
  transition: opacity var(--transition);
}
.ig-tile--1 { background: #f0e8d8; }
.ig-tile--2 { background: #e8f0d8; }
.ig-tile--3 { background: #d8e8f0; }
.ig-tile--4 { background: #f0d8d8; }
.ig-tile--5 { background: #e8d8f0; }
.ig-tile--6 { background: #d8f0e8; }
.ig-cta { font-size: var(--size-sm); font-weight: 600; color: var(--black); }
.instagram__placeholder:hover .ig-tile { opacity: 0.8; }

/* ── SOURCING ── */
.sourcing { background: var(--white); }
.sourcing__intro { font-size: var(--size-lg); max-width: 700px; margin-bottom: var(--space-xl); color: var(--gray-600); }
.sourcing__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-lg); margin-bottom: var(--space-xl); }
.sourcing__card { padding: var(--space-lg) 0; border-top: 3px solid var(--gray-200); transition: border-color var(--transition); }
.sourcing__card:hover { border-color: var(--blue); }
.sourcing__icon { display: block; font-size: 1.75rem; margin-bottom: var(--space-sm); }
.sourcing__card h3 { margin-bottom: var(--space-xs); font-size: var(--size-base); font-weight: 700; }
.sourcing__card p { font-size: var(--size-sm); }
@media (max-width: 768px) { .sourcing__grid { grid-template-columns: 1fr; } }

/* ── ABOUT ── */
.about { background: var(--gray-100); }
.about__copy { position: sticky; top: 100px; }
.about__body { display: flex; flex-direction: column; gap: var(--space-md); }
.about__lead { font-size: var(--size-lg); font-weight: 500; color: var(--black); line-height: 1.5; }
.about__closing { font-size: var(--size-md); font-weight: 600; font-style: italic; color: var(--black); border-left: 3px solid var(--blue); padding-left: var(--space-sm); }
.about__badges { display: flex; flex-wrap: wrap; gap: var(--space-xs); margin-top: var(--space-sm); }
.badge { font-size: var(--size-xs); font-weight: 600; padding: 0.375rem 0.75rem; background: var(--white); border: 1px solid var(--gray-200); border-radius: 100px; color: var(--black); }

/* ── FOOTER ── */
.footer { background: linear-gradient(135deg, #0a1a3a 0%, var(--black) 100%); color: var(--white); }
.footer__inner {
  max-width: var(--max-width); margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg) var(--space-lg);
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: var(--space-xl);
}
.footer__brand .nav__logo-mark { font-size: var(--size-xl); }
.footer__brand p { color: rgba(255,255,255,0.5); font-size: var(--size-sm); margin-top: var(--space-xs); }
.footer__tagline { font-style: italic; }
.footer__heading { font-size: var(--size-xs); font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(255,255,255,0.3); margin-bottom: var(--space-sm); }
.footer__links, .footer__contact { display: flex; flex-direction: column; gap: 0.5rem; }
.footer__links a, .footer__contact a { font-size: var(--size-sm); color: rgba(255,255,255,0.6); transition: color var(--transition); }
.footer__links a:hover, .footer__contact a:hover { color: var(--white); }
.footer__area { font-size: var(--size-xs); color: rgba(255,255,255,0.3); margin-top: var(--space-xs); }
.footer__bottom {
  max-width: var(--max-width); margin: 0 auto;
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--space-xs);
}
.footer__bottom p { font-size: var(--size-xs); color: rgba(255,255,255,0.3); }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__stat-block { grid-template-columns: repeat(4, 1fr); max-width: 100%; }
  .why__grid { grid-template-columns: repeat(3, 1fr); }
  .section-inner--split { grid-template-columns: 1fr; gap: var(--space-xl); }
  .footer__inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  :root { --space-2xl: 4rem; }
  .nav__links { display: none; }
  .nav__links.open { display: flex; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; background: var(--white); border-bottom: 1px solid var(--gray-200); padding: var(--space-md) var(--space-lg); gap: var(--space-sm); }
  .nav__burger { display: flex; }
  .nav__logo-text { display: block; }
  .why__grid { grid-template-columns: 1fr; }
  .hero__stat-block { grid-template-columns: repeat(2, 1fr); }
  .footer__inner { grid-template-columns: 1fr; gap: var(--space-lg); }
  .footer__bottom { flex-direction: column; }
  .brands__grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
  h1 { font-size: clamp(2.5rem, 10vw, 4rem); }
}
@media (max-width: 480px) {
  .hero__cta-group { flex-direction: column; }
  .btn { width: 100%; text-align: center; }
  .ig-grid { grid-template-columns: repeat(2, 1fr); }
}