/* =========================================================================
   QBS-Solutions — Landing Page
   Dark near-black canvas, cyan→teal accent, bold Inter Tight display.
   Cinematic hero with background video, restrained motion (one hero reveal),
   committed all-dark theme. Swiss German copy.
   ========================================================================= */

:root {
  /* surface */
  --bg:        #0A0B10;
  --bg-alt:    #0D0F16;
  --card:      #12141D;
  --card-hi:   #171A25;
  --line:      rgba(255,255,255,.09);
  --line-hi:   rgba(255,255,255,.16);

  /* text */
  --fg:        #EDEFF3;
  --muted:     #9AA3B2;
  --muted-dim: #6C7482;

  /* accent */
  --accent:      #3FC7F0;
  --accent-2:    #2DD4BF;
  --accent-ink:  #04141B;
  --accent-soft: rgba(63,199,240,.12);
  --accent-line: rgba(63,199,240,.30);
  --good:        #34D399;
  --grad: linear-gradient(100deg, #49D1F0, #2ED6BF);

  /* type */
  --display: "Inter Tight", system-ui, -apple-system, "Segoe UI", sans-serif;
  --body:    "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  /* scale */
  --step--1: 0.875rem;
  --step-0:  1rem;
  --step-1:  1.125rem;
  --step-2:  1.375rem;
  --step-3:  clamp(1.9rem, 1.3rem + 2.4vw, 2.9rem);
  --step-4:  clamp(2.6rem, 1.4rem + 5.4vw, 4.75rem);

  --wrap: 1200px;
  --gutter: clamp(1.25rem, 5vw, 2.5rem);
  --section-y: clamp(4rem, 8vw, 7rem);
  --radius: 12px;
  --radius-lg: 18px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

/* -------------------------------------------------------------- reset ---- */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--body);
  font-size: var(--step-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { margin: 0; font-family: var(--display); font-weight: 700; line-height: 1.1; letter-spacing: -.02em; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
img, svg, video { display: block; max-width: 100%; }
ul, ol { margin: 0; padding: 0; list-style: none; }
strong { font-weight: 700; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.sr-only, .skip-link {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link:focus {
  position: fixed; top: 12px; left: 12px; width: auto; height: auto; clip: auto;
  margin: 0; padding: .6rem 1rem; z-index: 200;
  background: var(--accent); color: var(--accent-ink); font-weight: 600; border-radius: 8px;
}

.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }

/* -------------------------------------------------------------- buttons -- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: .85rem 1.5rem;
  font-family: var(--body); font-weight: 600; font-size: var(--step-0);
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  text-align: center;
  transition: transform .16s var(--ease), background-color .16s var(--ease),
              border-color .16s var(--ease), box-shadow .16s var(--ease);
}
.btn-sm { padding: .6rem 1.05rem; font-size: var(--step--1); }
.btn-block { width: 100%; }
.btn-primary {
  background: var(--grad); color: var(--accent-ink);
  box-shadow: 0 10px 30px -12px rgba(63,199,240,.5);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 16px 40px -14px rgba(63,199,240,.6); }
.btn-ghost { background: transparent; border-color: var(--line-hi); color: var(--fg); }
.btn-ghost:hover { background: rgba(255,255,255,.05); border-color: var(--fg); }

/* -------------------------------------------------------------- header --- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background-color .3s var(--ease), border-color .3s var(--ease);
}
.site-header[data-scrolled] {
  background: rgba(10,11,16,.82);
  backdrop-filter: blur(12px);
  border-bottom-color: var(--line);
}
.header-inner { display: flex; align-items: center; gap: 1.5rem; height: 72px; }
.brand { display: inline-flex; align-items: center; gap: .6rem; }
.brand-logo { height: 36px; width: auto; flex: none; background: #fff; padding: 4px; border-radius: 8px; }
.brand-word { font-family: var(--display); font-weight: 700; font-size: 1.2rem; letter-spacing: -.01em; }
.brand-sub { color: var(--muted); font-weight: 600; }

.site-nav { display: flex; gap: 1.6rem; margin-left: auto; }
.site-nav a { font-size: var(--step--1); font-weight: 500; color: var(--muted); transition: color .16s var(--ease); }
.site-nav a:hover { color: var(--fg); }

.header-actions { display: flex; align-items: center; gap: 1rem; }

.nav-toggle {
  display: none; width: 42px; height: 42px; padding: 10px;
  background: transparent; border: 1px solid var(--line-hi); border-radius: 10px; cursor: pointer;
}
.nav-toggle span:not(.sr-only) { display: block; height: 1.6px; background: var(--fg); margin: 4px 0; transition: transform .2s var(--ease), opacity .2s var(--ease); }
.site-header[data-nav-open] .nav-toggle span:nth-child(1) { transform: translateY(5.6px) rotate(45deg); }
.site-header[data-nav-open] .nav-toggle span:nth-child(2) { opacity: 0; }
.site-header[data-nav-open] .nav-toggle span:nth-child(3) { transform: translateY(-5.6px) rotate(-45deg); }

.mobile-nav {
  display: flex; flex-direction: column;
  padding: .5rem var(--gutter) 1.75rem;
  background: rgba(10,11,16,.98); border-bottom: 1px solid var(--line);
}
.mobile-nav a { padding: .95rem 0; font-size: 1.05rem; font-weight: 500; border-bottom: 1px solid var(--line); }
.mobile-nav .btn { margin-top: 1.1rem; }

/* -------------------------------------------------------------- shared --- */
.pill {
  display: inline-flex; align-items: center; gap: .55rem;
  padding: .5rem 1rem;
  font-size: var(--step--1); font-weight: 500; color: var(--fg);
  border: 1px solid var(--line-hi); border-radius: 999px;
  background: rgba(255,255,255,.05);
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--good); flex: none;
  box-shadow: 0 0 0 0 rgba(52,211,153,.55); animation: pulse 2.6s var(--ease) infinite; }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(52,211,153,.5); }
  70% { box-shadow: 0 0 0 7px rgba(52,211,153,0); }
  100% { box-shadow: 0 0 0 0 rgba(52,211,153,0); }
}

.eyebrow {
  font-size: var(--step--1); font-weight: 600; letter-spacing: .16em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 1rem;
}

.section { padding-block: var(--section-y); }
.section--alt { background: var(--bg-alt); }
:where([id]) { scroll-margin-top: 92px; }

.section-head { margin-bottom: clamp(2.5rem, 5vw, 3.75rem); }
.section-head--center { text-align: center; max-width: 720px; margin-inline: auto; }
.section-title { font-size: var(--step-3); font-weight: 700; }
.section-intro { margin-top: 1rem; color: var(--muted); font-size: var(--step-1); }
.section-head--center .section-intro { margin-inline: auto; max-width: 620px; }

/* shared check list */
.ticks { display: grid; gap: .7rem; }
.ticks li { position: relative; padding-left: 1.7rem; color: var(--fg); font-size: var(--step--1); }
.ticks li::before {
  content: ""; position: absolute; left: 0; top: .05em; width: 1.05rem; height: 1.05rem;
  background: no-repeat center / contain
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='none'%3E%3Cpath d='M4 10.5 8 14.5 16 6' stroke='%2334D399' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}
.ticks--2col { grid-template-columns: 1fr 1fr; gap: .7rem 1.5rem; }

/* -------------------------------------------------------------- hero ----- */
.hero {
  position: relative; overflow: hidden; isolation: isolate;
  min-height: 94svh;
  display: flex; align-items: center;
  padding-block: 9rem 4rem;
}
.hero-media { position: absolute; inset: 0; z-index: -1; background: #05070C; }
.hero-video {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; opacity: .5;
}
.hero-scrim {
  position: absolute; inset: 0;
  background:
    radial-gradient(90% 55% at 50% 0%, rgba(63,199,240,.16), transparent 60%),
    linear-gradient(180deg, rgba(10,11,16,.72) 0%, rgba(10,11,16,.68) 38%, rgba(10,11,16,.94) 100%);
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 60px 60px;
  -webkit-mask-image: radial-gradient(120% 70% at 50% 0%, #000, transparent 75%);
          mask-image: radial-gradient(120% 70% at 50% 0%, #000, transparent 75%);
}
.hero-inner { text-align: center; max-width: 900px; margin-inline: auto; }
.hero-title { font-size: var(--step-4); font-weight: 800; letter-spacing: -.03em; margin-top: 1.5rem; }
.hero-title span { display: block; }
.hero-title .accent { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-sub { margin: 1.6rem auto 0; max-width: 58ch; font-size: var(--step-1); color: #C7CDD8; }
.hero-cta { display: flex; flex-wrap: wrap; gap: .9rem; justify-content: center; margin-top: 2.2rem; }

.chips { display: flex; flex-wrap: wrap; justify-content: center; gap: .6rem; margin-top: 2.75rem; }
.chips li {
  padding: .5rem 1rem; font-size: var(--step--1); color: var(--muted);
  border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.03);
}

/* hero reveal — one orchestrated entrance */
.reveal { opacity: 0; transform: translateY(16px); }
.hero.is-ready .reveal { opacity: 1; transform: none; transition: opacity .7s var(--ease), transform .7s var(--ease); }
.hero.is-ready .reveal[data-reveal="2"] { transition-delay: .07s; }
.hero.is-ready .reveal[data-reveal="3"] { transition-delay: .14s; }
.hero.is-ready .reveal[data-reveal="4"] { transition-delay: .21s; }
.hero.is-ready .reveal[data-reveal="5"] { transition-delay: .3s; }

/* -------------------------------------------------------------- card grids */
.cards-4 { display: grid; gap: 1.25rem; grid-template-columns: repeat(4, 1fr); }
.cards-3 { display: grid; gap: 1.25rem; grid-template-columns: repeat(3, 1fr); }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 2.5vw, 1.9rem);
  display: flex; flex-direction: column; gap: .85rem;
  transition: border-color .18s var(--ease), background-color .18s var(--ease), transform .18s var(--ease);
}
.card:hover { border-color: var(--line-hi); background: var(--card-hi); transform: translateY(-3px); }
.icon-chip {
  width: 46px; height: 46px; display: grid; place-items: center;
  border-radius: 12px; color: var(--accent);
  background: var(--accent-soft); border: 1px solid var(--accent-line);
}
.icon-chip svg { width: 24px; height: 24px; }
.card h3 { font-size: var(--step-2); font-weight: 600; }
.card p { color: var(--muted); font-size: var(--step-0); }

/* -------------------------------------------------------------- scenarios  */
.scenarios { display: grid; gap: 1.25rem; grid-template-columns: repeat(3, 1fr); }
.scenario {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 2.6vw, 2rem);
  display: flex; flex-direction: column; gap: .7rem;
}
.scenario-tag {
  align-self: flex-start;
  font-size: .78rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
  color: var(--accent);
  padding: .3rem .7rem; border: 1px solid var(--accent-line); border-radius: 999px;
  background: var(--accent-soft);
}
.scenario h3 { font-size: var(--step-1); font-weight: 600; }
.scenario-lead { color: var(--muted); font-size: var(--step--1); }
.scenario .ticks { margin-top: .5rem; }

.toolstack {
  margin-top: 2rem; text-align: center;
  color: var(--muted); font-size: var(--step--1);
}
.toolstack span {
  display: inline-block; margin-right: .9rem;
  font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
  color: var(--muted-dim); font-size: .78rem;
}
.toolstack em { color: var(--muted-dim); font-style: normal; }

/* -------------------------------------------------------------- band ----- */
.band { position: relative; isolation: isolate; overflow: hidden; }
.band-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; }
.band-scrim {
  position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg, rgba(10,11,16,.78), rgba(10,11,16,.9)),
              linear-gradient(90deg, rgba(10,11,16,.7), rgba(10,11,16,.35));
}
.band-inner { padding-block: clamp(3.5rem, 8vw, 6rem); max-width: 640px; }
.band-inner h2 { font-size: var(--step-3); }
.band-inner p { margin-top: .9rem; color: #C7CDD8; font-size: var(--step-1); }

/* -------------------------------------------------------------- tiers ---- */
.tiers { display: grid; gap: 1.5rem; grid-template-columns: repeat(3, 1fr); align-items: start; }
.tier {
  position: relative;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: clamp(1.6rem, 3vw, 2.1rem);
  display: flex; flex-direction: column;
}
.tier--featured {
  border-color: var(--accent-line);
  box-shadow: 0 0 0 1px var(--accent-line), 0 30px 70px -30px rgba(63,199,240,.35);
}
.tier-badge {
  display: inline-flex; align-self: flex-start; align-items: center;
  padding: .35rem .85rem; margin-bottom: 1rem;
  font-size: .8rem; font-weight: 600; color: var(--accent-ink);
  background: var(--grad); border-radius: 999px;
}
.tier--featured .tier-badge { position: absolute; top: -.9rem; left: 50%; translate: -50% 0; margin: 0; }
.tier--featured .tier-name { margin-top: .4rem; }
.tier-name { font-size: var(--step-2); font-weight: 700; }
.tier-line { margin-top: .5rem; color: var(--muted); font-size: var(--step-0); min-height: 2.8em; }
.tier-price { margin-top: 1.25rem; display: flex; align-items: baseline; gap: .5rem; flex-wrap: wrap; }
.tier-price strong { font-family: var(--display); font-weight: 700; font-size: clamp(2rem, 1.4rem + 2vw, 2.6rem); letter-spacing: -.02em; }
.tier-price span { color: var(--muted); font-size: var(--step--1); }
.tier-vat { margin-top: .2rem; color: var(--muted-dim); font-size: .8rem; }
.tier-prefix {
  margin-top: 1.4rem; font-size: .8rem; font-weight: 600; letter-spacing: .06em;
  text-transform: uppercase; color: var(--accent);
}
.tier .ticks { margin-top: 1rem; }
.tier:not(.tier--featured) .ticks { margin-top: 1.4rem; }
.tier .btn { margin-top: auto; }
.tier .ticks + .btn { margin-top: 1.75rem; }

/* -------------------------------------------------------------- audit ---- */
.audit {
  margin-top: 1.5rem;
  display: grid; grid-template-columns: 1.55fr 1fr; gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: center;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: clamp(1.75rem, 4vw, 3rem);
}
.audit-badge { position: static; margin-bottom: 1.1rem; }
.audit-title { font-size: var(--step-3); }
.audit-text { margin-top: 1rem; color: var(--muted); font-size: var(--step-1); max-width: 52ch; }
.audit .ticks { margin-top: 1.75rem; }
.audit-price {
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius);
  padding: clamp(1.5rem, 3vw, 2rem); text-align: center;
}
.audit-price-label { color: var(--muted); font-size: var(--step--1); }
.audit-price-figure { font-family: var(--display); font-weight: 700; font-size: clamp(2.2rem, 1.5rem + 3vw, 3rem); letter-spacing: -.02em; margin-top: .35rem; }
.audit-price-vat { color: var(--muted-dim); font-size: .8rem; margin-top: .15rem; }
.audit-price .btn { margin-top: 1.4rem; }
.audit-price-note { margin-top: .9rem; color: var(--muted-dim); font-size: .8rem; }

/* -------------------------------------------------------------- about ---- */
.about-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(2rem, 6vw, 4.5rem); align-items: center; }
.metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem 2rem; margin-top: 2.25rem; }
.metrics dd { margin: 0; font-family: var(--display); font-weight: 700; font-size: clamp(1.6rem, 1.1rem + 1.6vw, 2.1rem); letter-spacing: -.02em; color: var(--fg); }
.metrics dt { margin-top: .3rem; color: var(--muted); font-size: var(--step--1); }
.partners { margin-top: 2.25rem; color: var(--muted); font-size: var(--step--1); }
.partners span {
  display: block; margin-bottom: .4rem;
  font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
  color: var(--muted-dim); font-size: .78rem;
}
.about-figure {
  margin: 0; border: 1px solid var(--line); border-radius: var(--radius-lg);
  overflow: hidden; aspect-ratio: 4 / 3; background: var(--card);
}
.about-figure img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* -------------------------------------------------------------- contact -- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2.5rem, 6vw, 5rem); align-items: start; }
.contact-title { font-size: var(--step-3); }
.contact-details { margin-top: 2rem; display: grid; gap: 1rem; }
.contact-details li { display: grid; grid-template-columns: 6.5rem 1fr; gap: 1rem; align-items: baseline; font-size: var(--step-0); }
.contact-details span { color: var(--muted-dim); font-size: .8rem; letter-spacing: .06em; text-transform: uppercase; }
.contact-details a:hover { color: var(--accent); }

.contact-form { display: grid; gap: 1rem; }
.field { display: grid; gap: .4rem; }
.field label { font-size: var(--step--1); font-weight: 500; color: var(--muted); }
.field input, .field textarea, .field select {
  font: inherit; color: var(--fg);
  background: var(--card); border: 1px solid var(--line-hi); border-radius: 10px;
  padding: .8rem .95rem;
  transition: border-color .16s var(--ease);
}
.field select { appearance: none; -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none'%3E%3Cpath d='M4 6l4 4 4-4' stroke='%239AA3B2' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right .9rem center; padding-right: 2.4rem; }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--accent); }
.field textarea { resize: vertical; }
.check { display: flex; gap: .65rem; align-items: flex-start; font-size: var(--step--1); color: var(--muted); }
.check input { margin-top: .15rem; accent-color: var(--accent); flex: none; }
.check a { color: var(--accent); }
.contact-form .btn { justify-self: start; margin-top: .3rem; }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.form-note { font-size: var(--step--1); color: var(--accent); border-left: 2px solid var(--accent); padding-left: .8rem; }
.form-note.is-error { color: #F6A6A0; border-color: #F6A6A0; }

/* -------------------------------------------------------------- footer --- */
.site-footer { background: var(--bg-alt); border-top: 1px solid var(--line); padding-top: clamp(3rem, 6vw, 4.5rem); }
.footer-inner { display: grid; grid-template-columns: 1.3fr 2fr; gap: 2.5rem clamp(2rem, 8vw, 5rem); padding-bottom: 2.75rem; }
.footer-brand p { color: var(--muted-dim); margin-top: .9rem; max-width: 32ch; font-size: var(--step--1); }
.footer-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.footer-cols h4 { font-family: var(--body); font-size: var(--step--1); font-weight: 600; color: var(--muted-dim); margin-bottom: .9rem; }
.footer-cols a { display: block; padding: .35rem 0; font-size: var(--step--1); color: var(--muted); transition: color .16s var(--ease); }
.footer-cols a:hover { color: var(--fg); }
.footer-meta { border-top: 1px solid var(--line); padding-block: 1.5rem 2rem; }
.footer-meta p { color: var(--muted-dim); font-size: var(--step--1); }

/* -------------------------------------------------------------- responsive */
@media (max-width: 1000px) {
  .cards-4 { grid-template-columns: repeat(2, 1fr); }
  .cards-3, .scenarios { grid-template-columns: 1fr; max-width: 560px; margin-inline: auto; }
  .tiers { grid-template-columns: 1fr; max-width: 480px; margin-inline: auto; }
  .tier-line { min-height: 0; }
  .tier--featured { order: -1; }
  .audit { grid-template-columns: 1fr; align-items: start; }
  .about-grid { grid-template-columns: 1fr; }
  .about-figure { order: -1; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  .site-nav { display: none; }
  .header-actions .btn { display: none; }
  .nav-toggle { display: block; }
}
@media (max-width: 560px) {
  .cards-4 { grid-template-columns: 1fr; }
  .ticks--2col { grid-template-columns: 1fr; }
  .metrics { grid-template-columns: 1fr; }
  .contact-details li { grid-template-columns: 1fr; gap: .1rem; }
}

/* -------------------------------------------------------------- motion off */
@media (prefers-reduced-motion: reduce) {
  .hero-video { display: none; }
  .dot { animation: none; box-shadow: none; }
  .reveal { opacity: 1; transform: none; }
  .hero.is-ready .reveal { transition: none; }
  .btn:hover, .card:hover { transform: none; }
}