/* ==========================================================================
   schneiderdennis.com — Design System
   ========================================================================== */

:root {
  /* Color */
  --bg: #08090c;
  --bg-elevated: #0f1116;
  --bg-card: #12141b;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #f4f3ee;
  --text-muted: #9a9ca6;
  --text-faint: #5f6270;
  --accent: #7c6cff;
  --accent-2: #35e8d0;
  --accent-grad: linear-gradient(135deg, #7c6cff 0%, #35e8d0 100%);
  --danger: #ff6b6b;

  /* Type */
  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;

  /* Spacing scale */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6rem;
  --space-7: 9rem;

  /* Layout */
  --max-width: 1180px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 0.2s;
  --dur-med: 0.6s;
  --dur-slow: 1.1s;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { color-scheme: dark; scroll-behavior: smooth; }
body {
  min-height: 100svh;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; padding: 0; }
input, textarea, button { font: inherit; color: inherit; }
button { cursor: pointer; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- Accessibility helpers ---------- */
.sr-only {
  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 {
  position: fixed; top: -100%; left: var(--space-2);
  z-index: 999; background: var(--accent); color: #08090c;
  padding: 0.75rem 1.25rem; border-radius: var(--radius-sm);
  font-weight: 600; transition: top var(--dur-fast) var(--ease-out);
}
.skip-link:focus { top: var(--space-2); }

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

/* ---------- Background atmosphere ---------- */
.atmosphere {
  position: fixed;
  inset: 0;
  z-index: -2;
  overflow: hidden;
  pointer-events: none;
}
.atmosphere::before,
.atmosphere::after {
  content: "";
  position: absolute;
  width: 60vmax;
  height: 60vmax;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.28;
  will-change: transform;
}
.atmosphere::before {
  top: -20vmax;
  left: -10vmax;
  background: radial-gradient(circle, #7c6cff, transparent 70%);
  animation: drift1 26s ease-in-out infinite alternate;
}
.atmosphere::after {
  bottom: -25vmax;
  right: -15vmax;
  background: radial-gradient(circle, #35e8d0, transparent 70%);
  animation: drift2 30s ease-in-out infinite alternate;
}
@keyframes drift1 {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(8vmax, 10vmax) scale(1.15); }
}
@keyframes drift2 {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-6vmax, -8vmax) scale(1.1); }
}
.grain {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Cursor glow (desktop, pointer:fine only) */
.cursor-glow {
  position: fixed;
  top: 0; left: 0;
  width: 420px; height: 420px;
  margin-left: -210px; margin-top: -210px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124,108,255,0.14), transparent 70%);
  pointer-events: none;
  z-index: 0;
  transform: translate3d(-9999px, -9999px, 0);
  transition: opacity var(--dur-fast) var(--ease-out);
  will-change: transform;
}

/* ---------- Layout helpers ---------- */
.wrap {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-3);
}
section { position: relative; z-index: 1; }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: var(--space-2) 0;
  transition: background var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              padding var(--dur-fast) var(--ease-out);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(8, 9, 12, 0.72);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom-color: var(--border);
  padding: 0.75rem 0;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}
.brand-mark {
  width: 34px; height: 34px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  background: var(--accent-grad);
  color: #08090c;
  font-weight: 700;
  font-size: 0.85rem;
  box-shadow: 0 0 24px rgba(124, 108, 255, 0.45);
}
.main-nav ul {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.main-nav a {
  font-size: 0.92rem;
  color: var(--text-muted);
  position: relative;
  padding: 0.3rem 0.1rem;
  transition: color var(--dur-fast) var(--ease-out);
}
.main-nav a:hover,
.main-nav a:focus-visible,
.main-nav a.is-active { color: var(--text); }
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: -2px;
  height: 1px;
  background: var(--accent-grad);
  transition: right var(--dur-med) var(--ease-out);
}
.main-nav a:hover::after,
.main-nav a.is-active::after { right: 0; }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.1rem;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  font-size: 0.88rem;
  font-weight: 500;
  transition: border-color var(--dur-fast), transform var(--dur-fast), background var(--dur-fast);
}
.nav-cta:hover {
  border-color: var(--accent-2);
  transform: translateY(-1px);
  background: rgba(53, 232, 208, 0.06);
}

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: transparent;
  position: relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 11px; right: 11px;
  height: 1.5px;
  background: var(--text);
  transition: transform var(--dur-fast) var(--ease-out), opacity var(--dur-fast);
}
.nav-toggle span { top: 50%; transform: translateY(-50%); }
.nav-toggle span::before { top: -7px; }
.nav-toggle span::after { top: 7px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: rotate(45deg) translate(-5px, 6px); }
.nav-toggle[aria-expanded="true"] span::after { transform: rotate(-45deg) translate(-5px, -6px); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), border-color var(--dur-fast);
  position: relative;
  isolation: isolate;
}
.btn-primary {
  background: var(--accent-grad);
  color: #07080b;
  box-shadow: 0 8px 30px -8px rgba(124, 108, 255, 0.55);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 36px -10px rgba(124, 108, 255, 0.7); }
.btn-primary:active { transform: translateY(0); }
.btn-ghost {
  border-color: var(--border-strong);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent-2); background: rgba(53, 232, 208, 0.06); }
.btn-arrow { transition: transform var(--dur-fast) var(--ease-out); }
.btn:hover .btn-arrow { transform: translateX(3px); }

/* ---------- Hero ---------- */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 6rem;
  padding-bottom: var(--space-5);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-3);
}
.eyebrow::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 12px var(--accent-2);
}
.hero-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.6rem, 7vw, 5.6rem);
  line-height: 1.03;
  letter-spacing: -0.03em;
  max-width: 16ch;
}
.hero-title .grad {
  background: var(--accent-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  margin-top: var(--space-3);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--text-muted);
  max-width: 46ch;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-6);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border);
  max-width: 640px;
}
.hero-meta div { display: flex; flex-direction: column; gap: 0.2rem; }
.hero-meta strong { font-family: var(--font-display); font-size: 1.05rem; }
.hero-meta span { font-size: 0.85rem; color: var(--text-faint); }

.scroll-cue {
  position: absolute;
  bottom: var(--space-3);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-faint);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.scroll-cue .line {
  width: 1px; height: 34px;
  background: linear-gradient(var(--accent), transparent);
  animation: scrollcue 2s var(--ease-in-out) infinite;
}
@keyframes scrollcue {
  0% { transform: scaleY(0); transform-origin: top; opacity: 0; }
  40% { transform: scaleY(1); transform-origin: top; opacity: 1; }
  60% { transform: scaleY(1); transform-origin: bottom; opacity: 1; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}

/* ---------- Section shell ---------- */
.section { padding: var(--space-7) 0; }
.section-head {
  max-width: 640px;
  margin-bottom: var(--space-5);
}
.section-tag {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-2);
  font-weight: 600;
  margin-bottom: var(--space-1);
  display: block;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}
.section-desc {
  margin-top: var(--space-2);
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > * { }
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }

/* ---------- Values grid ---------- */
.grid {
  display: grid;
  gap: var(--space-3);
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: linear-gradient(180deg, var(--bg-card), rgba(18, 20, 27, 0.4));
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  position: relative;
  overflow: hidden;
  transition: transform var(--dur-med) var(--ease-out), border-color var(--dur-med) var(--ease-out), box-shadow var(--dur-med) var(--ease-out);
}
.card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: var(--accent-grad);
  opacity: 0;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  transition: opacity var(--dur-med) var(--ease-out);
  pointer-events: none;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -20px rgba(0,0,0,0.6);
}
.card:hover::before { opacity: 1; }
.card-icon {
  width: 46px; height: 46px;
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  background: rgba(124, 108, 255, 0.12);
  color: var(--accent-2);
  margin-bottom: var(--space-2);
}
.card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.card p { color: var(--text-muted); font-size: 0.95rem; }

/* ---------- Focus / services teaser ---------- */
.teaser-card {
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
  background: rgba(124, 108, 255, 0.03);
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: rgba(53, 232, 208, 0.12);
  color: var(--accent-2);
  border: 1px solid rgba(53, 232, 208, 0.25);
}

/* ---------- Timeline / focus list ---------- */
.focus-list { display: flex; flex-direction: column; }
.focus-item {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-top: 1px solid var(--border);
  transition: padding-left var(--dur-med) var(--ease-out);
}
.focus-item:last-child { border-bottom: 1px solid var(--border); }
.focus-item:hover { padding-left: var(--space-1); }
.focus-index {
  font-family: var(--font-display);
  color: var(--text-faint);
  font-size: 0.9rem;
}
.focus-item h3 { font-family: var(--font-display); font-size: 1.15rem; font-weight: 600; margin-bottom: 0.35rem; }
.focus-item p { color: var(--text-muted); font-size: 0.95rem; max-width: 60ch; }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  align-items: start;
}
.contact-info p { color: var(--text-muted); margin-bottom: var(--space-3); max-width: 42ch; }
.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 500;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border-strong);
  transition: border-color var(--dur-fast), color var(--dur-fast), gap var(--dur-fast);
}
.contact-link:hover { border-color: var(--accent-2); color: var(--accent-2); gap: 0.9rem; }

.form-field { margin-bottom: var(--space-2); }
.form-field label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}
.form-field input,
.form-field textarea {
  width: 100%;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  transition: border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}
.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(124, 108, 255, 0.18);
}
.form-field textarea { resize: vertical; min-height: 120px; }
.form-note { font-size: 0.8rem; color: var(--text-faint); margin-top: var(--space-2); }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: var(--space-5) 0 var(--space-3);
}
.footer-top {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
  padding-bottom: var(--space-4);
}
.footer-brand p { color: var(--text-muted); max-width: 34ch; margin-top: var(--space-1); }
.footer-cols {
  display: flex;
  gap: var(--space-5);
  flex-wrap: wrap;
}
.footer-col h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  margin-bottom: var(--space-2);
}
.footer-col ul { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-col a { color: var(--text-muted); font-size: 0.92rem; transition: color var(--dur-fast); }
.footer-col a:hover { color: var(--text); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  padding-top: var(--space-3);
  border-top: 1px solid var(--border);
  font-size: 0.82rem;
  color: var(--text-faint);
}
.socials { display: flex; gap: var(--space-2); }
.socials a {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  color: var(--text-muted);
  transition: border-color var(--dur-fast), color var(--dur-fast), transform var(--dur-fast);
}
.socials a:hover { border-color: var(--accent-2); color: var(--accent-2); transform: translateY(-2px); }

/* ---------- Legal pages ---------- */
.legal-page { padding-top: 9rem; padding-bottom: var(--space-6); }
.legal-page h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin-bottom: var(--space-2);
}
.legal-page h2 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  margin-top: var(--space-4);
  margin-bottom: var(--space-1);
}
.legal-page p, .legal-page li { color: var(--text-muted); font-size: 0.98rem; }
.legal-page ul { list-style: disc; padding-left: 1.3rem; display: flex; flex-direction: column; gap: 0.4rem; margin-top: 0.5rem; }
.legal-page section { max-width: 74ch; margin-bottom: var(--space-3); }
.legal-intro { color: var(--text-muted); max-width: 60ch; margin-bottom: var(--space-5); }
.todo-note {
  display: inline-block;
  margin-top: 0.6rem;
  font-size: 0.78rem;
  color: var(--danger);
  background: rgba(255, 107, 107, 0.1);
  border: 1px solid rgba(255, 107, 107, 0.25);
  padding: 0.3rem 0.6rem;
  border-radius: 6px;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: var(--space-4); }
}

@media (max-width: 720px) {
  .main-nav { position: fixed; inset: 0; top: 64px; z-index: 90;
    background: rgba(8,9,12,0.98); backdrop-filter: blur(20px);
    display: flex; align-items: flex-start; justify-content: flex-start;
    padding: var(--space-4) var(--space-3);
    transform: translateY(-8px);
    opacity: 0; pointer-events: none;
    transition: opacity var(--dur-med) var(--ease-out), transform var(--dur-med) var(--ease-out);
  }
  .main-nav.is-open { opacity: 1; transform: translateY(0); pointer-events: auto; }
  .main-nav ul { flex-direction: column; align-items: flex-start; gap: var(--space-3); width: 100%; }
  .main-nav a { font-size: 1.4rem; }
  .nav-cta { display: none; }
  .main-nav .nav-cta { display: inline-flex; margin-top: var(--space-2); }
  .nav-toggle { display: block; }
  .grid-3 { grid-template-columns: 1fr; }
  .footer-top { flex-direction: column; }
  .focus-item { grid-template-columns: 1fr; gap: 0.3rem; }
  .hero-meta { gap: var(--space-3); }
}

@media (hover: none) {
  .cursor-glow { display: none; }
}