/* ===============================
   RouterHaus — main.css (integrated & responsive) — FIXED
   =============================== */

/* ---- Reset / base ---- */
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
body, h1, h2, h3, h4, p, figure, blockquote, dl, dd { margin: 0; }
img, svg, video, canvas { display: block; max-width: 100%; height: auto; } /* maintain aspect */
button, input, select, textarea { font: inherit; }

/* Focus fallback first (works even if color-mix unsupported) */
:focus-visible { outline: 2px solid #6f7dff; outline-offset: 2px; }

html { scroll-behavior: smooth; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--nav-hover); }

/* ---- Design tokens ---- */
:root{
  /* Brand */
  --primary:#6f7dff;
  --accent:#ff8df3;
  --secondary:#1c3aa6;

  /* Neutrals (light) */
  --bg:#ffffff;
  --surface:#f7f9fc;
  --card:#ffffff;
  --text-primary:#101828;
  --text-muted:#667085;
  --nav-text:#0f172a;
  --nav-hover:#1c3aa6;

  /* States */
  --success:#37C978;
  --danger:#FF6B7B;
  --info:#06B6D4;
  --focus: color-mix(in oklab, var(--primary) 60%, transparent);
  --ring: color-mix(in oklab, var(--primary) 48%, transparent);

  /* Layout / shape / depth */
  --radius:18px;
  --radius-lg:22px;
  --shadow-sm:0 4px 14px rgba(16,24,40,.06);
  --shadow:0 10px 30px rgba(16,24,40,.10);
  --shadow-lg:0 22px 60px rgba(16,24,40,.18);
  --transition:all .24s cubic-bezier(.4,0,.2,1);
  --t: .22s cubic-bezier(.22,.61,.36,1);
  --shadow-md: var(--shadow);
  --header-h:70px;

  /* Borders */
  --border-color: color-mix(in oklab, var(--text-muted) 12%, transparent);
  --card-border: 1px solid color-mix(in oklab, var(--text-muted) 14%, transparent);

  /* Footer / hero */
  --footer-bg:#eef3ff;
  --hero-start:#8ec5fc;
  --hero-end:#e0c3fc;

  /* Typography scale */
  --fs-900: clamp(2.2rem, 1.4rem + 3.2vw, 3.4rem);
  --fs-800: clamp(1.6rem, 1.1rem + 1.6vw, 2.2rem);
  --fs-700: 1.3rem;
  --fs-600: 1.125rem;
  --fs-500: 1rem;
}

/* Dark mode */
html[data-theme="dark"]{
  --bg:#0b1120;
  --surface:#0f172a;
  --card:#0f1b33;
  --text-primary:#e6eaf5;
  --text-muted:#94a3b8;
  --nav-text:#e6eaf5;
  --nav-hover:#9cb6ff;

  --primary:#9ea7ff;
  --accent:#ff9aff;
  --secondary:#9cb6ff;

  --border-color: color-mix(in oklab, var(--text-muted) 18%, transparent);
  --ring: color-mix(in oklab, var(--primary) 52%, transparent);
  --card-border: 1px solid color-mix(in oklab, var(--text-muted) 22%, transparent);

  --footer-bg:#0c1324;
  --hero-start:#001934;
  --hero-end:#432889;
}

/* Improve focus when color-mix is supported */
:focus-visible { outline: 2px solid var(--focus); }

/* ---- Base styles ---- */
html, body{
  background:var(--bg);
  color:var(--text-primary);
  -webkit-font-smoothing:antialiased;
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol";
  line-height:1.5;
  transition:background-color .25s,color .25s;
}
.container {
  max-width: 1280px;
  margin-inline: auto;
  padding: clamp(16px, 3vw, 28px);
}

/* ---- Glass surface ---- */
.glass{
  background:var(--card);
  border:var(--card-border);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  backdrop-filter: blur(14px) saturate(160%);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
}

/* ---- Navbar ---- */
.navbar{
  position:sticky; top:0; z-index:1000;
  display:flex; align-items:center; justify-content:space-between;
  padding:.9rem 1.25rem;
  background:linear-gradient(110deg, rgba(255,255,255,.85), rgba(244,247,255,.85));
  -webkit-backdrop-filter: blur(18px); backdrop-filter: blur(18px);
  box-shadow:var(--shadow-sm);
}
html[data-theme="dark"] .navbar{
  background:linear-gradient(110deg, rgba(11,17,32,.75), rgba(11,17,32,.55));
}

/* ===== Logo: unified hover, selection, and footer spacing ===== */
.logo{
  position: relative;
  font-weight:800; font-size:1.6rem; letter-spacing:-.3px; color:var(--primary);
  display:inline-flex; align-items:center;
  gap:0;
  text-decoration:none;
}
.logo span{
  background:linear-gradient(90deg,var(--accent),var(--primary));
  -webkit-text-fill-color:transparent; -webkit-background-clip:text;
}
/* Unified underline that spans BOTH words */
.logo::after{
  content:""; position:absolute; left:0; bottom:-3px; height:2px; width:0;
  background:linear-gradient(90deg,var(--accent),var(--primary));
  transition:width var(--transition);
}
.logo:hover::after,
.logo:focus-visible::after{ width:100%; }
/* Unified hover color so both "Router" and "Haus" react together */
.logo:hover,
.logo:focus-visible{ color:var(--nav-hover); }
.logo:hover span,
.logo:focus-visible span{
  background:none; -webkit-text-fill-color:currentColor;
}
/* Make text selection visible on gradient text */
.logo::selection,
.logo *::selection{
  background: color-mix(in oklab, var(--primary) 24%, transparent);
  color:#fff; -webkit-text-fill-color:#fff;
}

.nav-desktop{ display:flex; gap:1.1rem; align-items:center; }
.nav-desktop a{
  position:relative; padding:.35rem 0; font-weight:600; color:var(--nav-text);
}
.nav-desktop a::after{
  content:""; position:absolute; left:0; bottom:-3px; height:2px; width:0; background:var(--accent);
  transition:width var(--transition);
}
.nav-desktop a:hover::after{ width:100%; }
.nav-desktop .btn{ margin-left:.6rem; }

/* =========================================
   Button System (centralized; token-driven)
   ========================================= */
/* README
1) Variants: .btn (primary), .btn-secondary (outline), .btn-ghost (text), .btn-muted, .btn-danger, .btn-success, .btn-link.
2) Sizes: base .btn (md). Optional .btn-sm, .btn-lg. .btn-md resets vars explicitly.
3) Tokens: uses --primary/--accent, --text-primary/--text-muted, --surface, --border-color, --shadow-sm/--shadow, --radius.
4) States: hover “lift” and active “press”; disabled dims.
5) Focus: visible ring via :focus-visible; never remove it.
6) Motion: respects prefers-reduced-motion.
7) Icon spacing: gap via --btn-gap.
8) Extensibility: override --btn-* in modifiers; keep specificity flat.
9) Legacy: .btn.primary and .btn-ghost map to new variants.
*/

.btn{
  --btn-gap:.45rem;
  --btn-padding-y:.72rem; --btn-padding-x:1.32rem; --btn-font-size:1rem;
  display:inline-flex; align-items:center; justify-content:center; gap:var(--btn-gap);
  border-radius:14px; padding: var(--btn-padding-y) var(--btn-padding-x);
  font-size: var(--btn-font-size);
  font-weight:800; line-height:1.2;
  border:1px solid var(--border-color);
  background: color-mix(in oklab, var(--surface) 92%, transparent);
  color: var(--text-primary);
  text-decoration:none; cursor:pointer; white-space:nowrap;
  transition: transform var(--t), box-shadow var(--t), background var(--t), border-color var(--t), color var(--t);
  box-shadow: var(--shadow-sm);
}
.btn:hover{ transform:translateY(-2px); box-shadow: var(--shadow-md); }
.btn:active{ transform:translateY(-1px); }
.btn:disabled{ opacity:.55; cursor:not-allowed; transform:none; box-shadow:none; }

/* Primary (gradient) */
.btn.primary,
.btn-primary{
  background: linear-gradient(135deg, var(--primary), color-mix(in oklab, var(--accent) 80%, var(--primary)));
  color:#fff;
  border-color: color-mix(in oklab, var(--primary) 60%, transparent);
  text-shadow: 0 1px 0 rgba(0,0,0,.15);
}

/* Outline */
.btn-secondary{
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

/* Ghost (text) */
.btn-ghost,
.btn.ghost{
  background: transparent;
  color: var(--text-muted);
  border-color: var(--border-color);
}

/* Muted */
.btn-muted{
  background: color-mix(in oklab, var(--surface) 70%, var(--bg) 30%);
  color: var(--text-muted);
  border-color: color-mix(in oklab, var(--text-muted) 20%, transparent);
}

/* Semantic */
.btn-danger{
  background: linear-gradient(135deg, color-mix(in oklab, var(--danger) 90%, transparent), color-mix(in oklab, var(--danger) 70%, transparent));
  color:#fff;
  border-color: color-mix(in oklab, var(--danger) 60%, transparent);
}
.btn-success{
  background: linear-gradient(135deg, color-mix(in oklab, var(--success) 92%, transparent), color-mix(in oklab, var(--success) 74%, transparent));
  color:#0b1320;
  border-color: color-mix(in oklab, var(--success) 55%, transparent);
}

/* Link-style */
.btn-link{
  display:inline; padding:0; border:none; border-radius:0; box-shadow:none; background:none;
  color: var(--primary); text-decoration:underline; text-underline-offset:2px;
  transition: color .18s ease, text-decoration-color .18s ease; /* avoid transform/box-shadow churn */
}
.btn-link:hover{ text-decoration-thickness:2px; }

/* Sizes via variables */
.btn-sm{ --btn-padding-y:.52rem; --btn-padding-x:1.05rem; --btn-font-size:.95rem; }
.btn-md{ --btn-padding-y:.72rem; --btn-padding-x:1.32rem; --btn-font-size:1rem; }
.btn-lg{ --btn-padding-y:.92rem; --btn-padding-x:1.65rem; --btn-font-size:1.05rem; }

/* Focus ring */
.btn:focus-visible{ outline:2px solid var(--focus); outline-offset:2px; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  .btn{ transition: color .18s ease, background .18s ease, border-color .18s ease, box-shadow .18s ease; }
  .btn:hover, .btn:active{ transform:none; }
}

/* High contrast (limited support; safe no-op elsewhere) */
@media (prefers-contrast: more){
  .btn{ box-shadow:none; }
  .btn-link{ text-decoration-thickness:3px; }
}

/* ---- Mobile nav trigger ---- */
.hamburger{
  display:none; flex-direction:column; gap:4px; background:transparent; border:0; cursor:pointer;
}
.hamburger span{
  width:26px; height:3px; border-radius:2px; background:var(--text-primary);
  transition:var(--transition);
}
.hamburger.active span:first-child{ transform:rotate(45deg) translate(6px,6px); }
.hamburger.active span:nth-child(2){ opacity:0; }
.hamburger.active span:nth-child(3){ transform:rotate(-45deg) translate(6px,-6px); }

/* ---- Sidebar (mobile) ---- */
.sidebar{
  position:fixed; top:var(--header-h); right:-100%;
  z-index:1200;
  width:min(92vw, 340px); height:calc(100% - var(--header-h));
  padding:1.4rem 1.2rem; display:flex; flex-direction:column; gap:1rem;
  background: linear-gradient(110deg, rgba(255,255,255,.85), rgba(244,247,255,.85));
  -webkit-backdrop-filter: blur(18px); backdrop-filter: blur(18px);
  border-left: var(--card-border);
  border-top-left-radius:var(--radius); border-bottom-left-radius:var(--radius);
  box-shadow:-8px 0 24px rgba(16,24,40,.12);
  transition:right var(--transition);
}
html[data-theme="dark"] .sidebar{
  background: linear-gradient(110deg, rgba(11,17,32,.75), rgba(11,17,32,.55));
}
.sidebar.active{ right:0; }
.sidebar-header{ text-align:center; margin-bottom:1rem; }
.sidebar-close{
  position:absolute; top:1rem; right:1rem; font-size:1.5rem; cursor:pointer; line-height:1;
}
.sidebar nav, .nav-links{
  display:flex; flex-direction:column; gap:.5rem; padding:0; list-style:none; margin:0;
}
.sidebar nav a, .nav-links a{
  padding:.7rem 1rem; border-radius:12px; color:var(--nav-text);
  transition:color .2s ease, background-color .2s ease;
}
.sidebar nav a:hover, .nav-links a:hover{
  background: color-mix(in oklab, var(--primary) 10%, transparent);
}
.sidebar .btn{ width:100%; text-align:center; }

/* Overlay (must be above navbar, below sidebar) */
.overlay{
  position:fixed; inset:0; background:rgba(0,0,0,.5);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  opacity:0; visibility:hidden; transition:var(--transition); z-index:1100;
}
.overlay.active{ opacity:1; visibility:visible; }

/* ---- Sections / components ---- */
.hero{
  color:#fff;
  background:linear-gradient(135deg,var(--hero-start) 0%, var(--hero-end) 100%);
  padding: clamp(56px, 9vw, 120px) 0  clamp(40px, 7vw, 96px);
}
.hero a:hover{ color:#fff; } /* keep contrast on gradients */

.value-grid,.product-grid,.steps,.trust,.faq,.footer-cta{ background:transparent; }

.card{
  background:var(--card); border:var(--card-border);
  border-radius:var(--radius-lg); padding:1rem; box-shadow:var(--shadow-sm);
}
.product{ border-radius:var(--radius-lg); box-shadow:var(--shadow-sm); }

/* ===== Footer CTA ===== */
.footer-cta{
  background: linear-gradient(
    180deg,
    color-mix(in oklab, var(--surface) 45%, transparent),
    transparent
  ), var(--bg);
  border-top: 1px solid var(--border-color);
}
.footer-cta .cta-inner{ text-align:center; }
.footer-cta .cta-actions,
.footer-cta .hero-actions{
  display:flex; gap:10px; justify-content:center; flex-wrap:wrap; margin-top:8px;
}
.footer-cta .cta-inner p{ color: inherit; margin: revert; }

/* === Footer === */
.footer {
  background: var(--footer-bg);
  border-top: var(--card-border);
  padding: 3rem 0 2rem;
  -webkit-backdrop-filter: blur(24px) saturate(150%);
  backdrop-filter: blur(24px) saturate(150%);
}

.footer-grid{
  display:grid;
  gap:2.5rem;
  align-items:start;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  margin-bottom: 1.75rem;
}
@media (max-width:900px){ .footer-grid{ grid-template-columns: 1fr 1fr; } }
@media (max-width:680px){ .footer-grid{ grid-template-columns: 1fr; } }

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 46ch;
  margin-inline: auto;
  margin-top: -35px;
}
.footer-brand .logo {
  font-size: clamp(1.6rem, 1.1rem + 1.6vw, 2.1rem);
  font-weight: 800;
  display: inline-flex;
  align-items: baseline;
  gap: 0;
  letter-spacing: -0.015em;
  margin-inline: auto;
}
.footer-brand .logo span { margin-left: .02em; }
.footer-brand p {
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 46ch;
  margin-inline: auto;
}
.footer-brand .tm { font-size: .75em; margin-left: .25rem; opacity: .9; line-height: 1; }

.footer-section h4 {
  font-size: var(--fs-600);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: .75rem;
}
.footer-section ul { list-style: none; margin: 0; padding: 0; }
.footer-section li { margin-bottom: .5rem; }
.footer-section a {
  color: var(--text-muted);
  font-size: var(--fs-500);
  position: relative;
  transition: color .18s ease;
}
.footer-section a:hover { color: var(--primary); }
.footer-section a:hover::after {
  content: ""; position: absolute; left: 0; bottom: -2px; height: 2px; width: 100%; background: var(--primary);
}

/* Footer bottom */
.footer-bottom {
  border-top: 1px solid color-mix(in oklab, var(--text-muted) 16%, transparent);
  padding-top: 1.25rem;
  display: flex; flex-direction: column; align-items: center;
  gap: .6rem; text-align: center;
  color: var(--text-muted);
  font-size: var(--fs-500);
}
.footer-links { display: flex; gap: 1.25rem; flex-wrap: wrap; justify-content: center; }
.footer-links a { color: var(--text-muted); transition: color .18s ease; }
.footer-links a:hover { color: var(--primary); }

/* ---- Accordion ---- */
.accordion-item{ border-top:1px solid var(--border-color); cursor:pointer; }
.accordion-item h4{ font-size:1.05rem; }
.accordion-item span{ float:right; color:var(--primary); font-size:1.2rem; transition:transform .2s ease; }
.accordion-item.open span{ transform:rotate(45deg); }
.accordion-item p{ display:none; color:var(--text-muted); margin:.55rem 0 0; }
.accordion-item.open p{ display:block; }

/* ---- Desktop-only footer brand niceties ---- */
@media (min-width: 901px){
  .footer-brand{ justify-self:center; }
}

/* ---- Responsive tweaks ---- */
@media (max-width: 992px){
  .navbar{ padding:.8rem 1rem; }
}
@media (max-width: 768px){
  .nav-desktop{ display:none; }
  .hamburger{ display:flex; }
  /* no container width hacks; rely on padding */
}
@media (max-width: 480px){
  /* optional compact buttons via vars */
  .btn{ --btn-padding-y:.64rem; --btn-padding-x:1.12rem; --btn-font-size:.96rem; }
  .btn-sm{ --btn-padding-y:.48rem; --btn-padding-x:.92rem; --btn-font-size:.88rem; }
  .btn-lg{ --btn-padding-y:.85rem; --btn-padding-x:1.48rem; }
}

/* ---- Logo underline fix ---- */
.navbar .logo,
.navbar .logo:link,
.navbar .logo:visited,
.navbar .logo:hover,
.navbar .logo:focus{ text-decoration:none; }

/* Active page state (works for both header + sidebar) */
.nav-desktop a[aria-current="page"],
.sidebar nav a[aria-current="page"]{ color: var(--nav-hover); }
.nav-desktop a[aria-current="page"]::after,
.sidebar nav a[aria-current="page"]::after{ width:100%; }