/* ===========================================================
   Wagner Dental Design Crailsheim — Porcelain Aura
   Dark luxury dental-craft aesthetic. Champagne gold + porcelain.
   =========================================================== */

@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Work+Sans:wght@300;400;500;600&display=swap');

:root,
[data-theme='light'] {
  /* Surfaces — warm porcelain white */
  --color-bg: #f4f1ea;
  --color-surface: #fbf9f4;
  --color-surface-2: #ffffff;
  --color-surface-offset: #ece8df;
  --color-divider: #ddd6c8;
  --color-border: #d2cabb;

  /* Text */
  --color-text: #1c1813;
  --color-text-muted: #6d665a;
  --color-text-faint: #a39a8a;
  --color-text-inverse: #f6f2ea;

  /* Accent — champagne gold */
  --color-primary: #a8813a;
  --color-primary-hover: #876428;
  --color-primary-active: #6a4d1e;
  --color-primary-highlight: #e9ddc6;
  --color-gold: #b08d4a;

  /* Cool porcelain secondary */
  --color-porcelain: #c7d3d6;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(28, 24, 19, 0.06);
  --shadow-md: 0 6px 24px rgba(28, 24, 19, 0.08);
  --shadow-lg: 0 24px 60px rgba(28, 24, 19, 0.14);

  /* Glass */
  --glass-bg: rgba(251, 249, 244, 0.72);
  --glass-border: rgba(210, 202, 187, 0.6);
}

[data-theme='dark'] {
  --color-bg: #0b0a09;
  --color-surface: #131110;
  --color-surface-2: #1a1714;
  --color-surface-offset: #100f0d;
  --color-divider: #26221b;
  --color-border: #34302a;

  --color-text: #ece6db;
  --color-text-muted: #9a9182;
  --color-text-faint: #5e574d;
  --color-text-inverse: #1a1612;

  --color-primary: #c9a35e;
  --color-primary-hover: #dab878;
  --color-primary-active: #e2c490;
  --color-primary-highlight: #2a2418;
  --color-gold: #c9a35e;

  --color-porcelain: #9fb0b4;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.6);

  --glass-bg: rgba(16, 15, 13, 0.6);
  --glass-border: rgba(60, 54, 46, 0.7);
}

/* System dark fallback */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #0b0a09;
    --color-surface: #131110;
    --color-surface-2: #1a1714;
    --color-surface-offset: #100f0d;
    --color-divider: #26221b;
    --color-border: #34302a;
    --color-text: #ece6db;
    --color-text-muted: #9a9182;
    --color-text-faint: #5e574d;
    --color-primary: #c9a35e;
    --color-primary-hover: #dab878;
    --color-gold: #c9a35e;
    --color-porcelain: #9fb0b4;
    --glass-bg: rgba(16, 15, 13, 0.6);
    --glass-border: rgba(60, 54, 46, 0.7);
  }
}

:root {
  /* Type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.83rem + 0.3vw, 1rem);
  --text-base: clamp(1rem, 0.96rem + 0.22vw, 1.125rem);
  --text-lg: clamp(1.15rem, 1rem + 0.7vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.2vw, 2.25rem);
  --text-2xl: clamp(2.1rem, 1.3rem + 2.6vw, 3.6rem);
  --text-3xl: clamp(2.8rem, 1rem + 5vw, 5.2rem);
  --text-hero: clamp(3rem, 0.6rem + 7.2vw, 8.5rem);

  /* Spacing */
  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem;
  --space-5: 1.25rem; --space-6: 1.5rem; --space-8: 2rem; --space-10: 2.5rem;
  --space-12: 3rem; --space-16: 4rem; --space-20: 5rem; --space-24: 6rem;
  --space-32: 8rem;

  --radius-sm: 0.375rem; --radius-md: 0.625rem; --radius-lg: 0.9rem;
  --radius-xl: 1.25rem; --radius-full: 9999px;

  --transition: 220ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 600ms cubic-bezier(0.16, 1, 0.3, 1);

  --content-narrow: 680px;
  --content-default: 1080px;
  --content-wide: 1280px;

  --font-display: 'Instrument Serif', Georgia, 'Times New Roman', serif;
  --font-body: 'Work Sans', 'Helvetica Neue', Arial, sans-serif;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
  background: var(--color-bg);
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 400;
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

img, video, canvas, svg { display: block; max-width: 100%; height: auto; }
ul { list-style: none; }
a, button, [role='button'] { transition: color var(--transition), background var(--transition), border-color var(--transition), opacity var(--transition), transform var(--transition); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.01em;
  text-wrap: balance;
}
p, li { text-wrap: pretty; max-width: 70ch; }

::selection { background: rgba(201, 163, 94, 0.28); color: var(--color-text); }

:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm); }

button { cursor: pointer; background: none; border: none; color: inherit; font: inherit; }

.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; }

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

/* ---------- Layout helpers ---------- */
.container { width: 100%; max-width: var(--content-default); margin-inline: auto; padding-inline: clamp(var(--space-5), 4vw, var(--space-12)); }
.container--narrow { max-width: var(--content-narrow); }
.container--wide { max-width: var(--content-wide); }

.section { padding-block: clamp(var(--space-16), 7vw, var(--space-32)); position: relative; }
.section--tight { padding-block: clamp(var(--space-12), 5vw, var(--space-20)); }

.eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}
.eyebrow::before { content: ''; width: 28px; height: 1px; background: var(--color-primary); opacity: 0.6; }

.section-title { font-size: var(--text-2xl); margin-top: var(--space-4); max-width: 18ch; }
.section-intro { color: var(--color-text-muted); font-size: var(--text-lg); margin-top: var(--space-5); max-width: 56ch; line-height: 1.55; }

/* ---------- Header ---------- */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: transform 0.4s cubic-bezier(0.16,1,0.3,1), background 0.4s, box-shadow 0.4s;
}
.header__inner {
  display: flex; align-items: center; justify-content: space-between;
  padding-block: var(--space-5);
  transition: padding 0.4s cubic-bezier(0.16,1,0.3,1);
}
.header--scrolled { background: var(--glass-bg); backdrop-filter: blur(16px) saturate(1.2); -webkit-backdrop-filter: blur(16px) saturate(1.2); border-bottom: 1px solid var(--glass-border); }
.header--scrolled .header__inner { padding-block: var(--space-4); }
.header--hidden { transform: translateY(-100%); }

.brand { display: flex; align-items: center; gap: var(--space-3); text-decoration: none; color: var(--color-text); }
.brand__logo { width: 278px; height: 96px; object-fit: contain; object-position: left center; display: block; }
.brand__mark { width: 34px; height: 34px; flex: none; }
.brand__mark .stroke { stroke: var(--color-primary); }
.brand__mark .fill { fill: var(--color-text); }
.brand__text { display: flex; flex-direction: column; line-height: 1; }
.brand__name { font-family: var(--font-display); font-size: 1.2rem; letter-spacing: 0.01em; }
.brand__sub { font-size: 0.62rem; letter-spacing: 0.26em; text-transform: uppercase; color: var(--color-text-muted); margin-top: 3px; }

.nav { display: flex; align-items: center; gap: var(--space-8); }
.nav__links { display: flex; gap: var(--space-8); }
.nav__links a {
  font-size: var(--text-sm); font-weight: 500; color: var(--color-text-muted); text-decoration: none;
  position: relative; padding-block: var(--space-2);
}
.nav__links a::after { content: ''; position: absolute; left: 0; bottom: 0; height: 1px; width: 0; background: var(--color-primary); transition: width var(--transition); }
.nav__links a:hover { color: var(--color-text); }
.nav__links a:hover::after { width: 100%; }

.header__actions { display: flex; align-items: center; gap: var(--space-4); }

.theme-toggle {
  width: 38px; height: 38px; border-radius: var(--radius-full);
  display: grid; place-items: center; color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.theme-toggle:hover { color: var(--color-primary); border-color: var(--color-primary); }

.btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-size: var(--text-sm); font-weight: 500; letter-spacing: 0.02em;
  padding: 0.7em 1.4em; border-radius: var(--radius-full); text-decoration: none;
  border: 1px solid transparent; white-space: nowrap;
}
.btn--primary { background: var(--color-primary); color: #1a1612; }
.btn--primary:hover { background: var(--color-primary-hover); color: #1a1612; }
.btn--ghost { border-color: var(--color-border); color: var(--color-text); }
.btn--ghost:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn--light { background: rgba(246,242,234,0.08); color: #f6f2ea; border-color: rgba(246,242,234,0.22); }
.btn--light:hover { background: rgba(246,242,234,0.16); border-color: rgba(246,242,234,0.5); }

.menu-btn { display: none; width: 38px; height: 38px; place-items: center; color: var(--color-text); }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100svh; display: flex; align-items: center; overflow: hidden; }
.hero::before { content: ''; position: absolute; inset: 0; z-index: 1; pointer-events: none; background: linear-gradient(95deg, rgba(4,3,2,0.74) 0%, rgba(4,3,2,0.5) 26%, rgba(4,3,2,0.18) 52%, rgba(4,3,2,0) 74%); }
.hero__bg { position: absolute; inset: 0; z-index: 0; background: linear-gradient(95deg, rgba(4,3,2,0.64) 0%, rgba(4,3,2,0.32) 52%, rgba(4,3,2,0.48) 100%), url('../images/hero-background.jpg') right 5cm / auto calc(100% - 5cm) no-repeat; background-color: #050403; }
.hero__bg::after { content: ''; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(90deg, #050403 0%, rgba(5,4,3,0.98) 18%, rgba(5,4,3,0.78) 34%, rgba(5,4,3,0.42) 50%, rgba(5,4,3,0.12) 66%, transparent 84%); }
.hero__vignette { position: absolute; inset: 0; z-index: 2; pointer-events: none;
  background: radial-gradient(110% 90% at 50% 50%, transparent 45%, rgba(0,0,0,0.55) 100%); }
.hero__grain { position: absolute; inset: 0; z-index: 2; pointer-events: none; opacity: 0.5; mix-blend-mode: overlay; }
.hero__content { position: relative; z-index: 3; width: 100%; padding-block: var(--space-32) var(--space-24); }
.hero__eyebrow { color: #c9a35e; }
.hero__eyebrow::before { background: #c9a35e; }
.hero__title { font-size: var(--text-hero); color: #f4efe4; margin-top: var(--space-6); max-width: 14ch; letter-spacing: -0.02em; }
.hero__title em { font-style: italic; color: #e2c490; }
.hero__sub { color: rgba(236,230,219,0.74); font-size: var(--text-lg); margin-top: var(--space-6); max-width: 46ch; line-height: 1.55; }
.hero__actions { display: flex; flex-wrap: wrap; gap: var(--space-4); margin-top: var(--space-10); }
.hero__scroll { position: absolute; bottom: var(--space-8); left: 50%; transform: translateX(-50%); z-index: 3; color: rgba(236,230,219,0.5); font-size: var(--text-xs); letter-spacing: 0.2em; text-transform: uppercase; display: flex; flex-direction: column; align-items: center; gap: var(--space-3); }
.hero__scroll .line { width: 1px; height: 44px; background: linear-gradient(rgba(236,230,219,0.5), transparent); position: relative; overflow: hidden; }
.hero__scroll .line::after { content: ''; position: absolute; top: -50%; left: 0; width: 100%; height: 50%; background: #e2c490; animation: scrollDot 2.4s cubic-bezier(0.16,1,0.3,1) infinite; }
@keyframes scrollDot { 0% { transform: translateY(-100%); } 60%,100% { transform: translateY(200%); } }

/* ---------- Manifest ---------- */
.manifest { background: var(--color-bg); }
.manifest__quote { font-size: var(--text-3xl); font-family: var(--font-display); line-height: 1.12; letter-spacing: -0.015em; max-width: 22ch; }
.manifest__quote em { font-style: italic; color: var(--color-primary); }
.manifest__grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(var(--space-8), 5vw, var(--space-24)); align-items: start; margin-top: var(--space-16); }
.manifest__col p { color: var(--color-text-muted); font-size: var(--text-lg); line-height: 1.6; }
.manifest__col p + p { margin-top: var(--space-5); }

/* ---------- Services ---------- */
.services { background: var(--color-surface-offset); }
.services__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--color-divider); border: 1px solid var(--color-divider); border-radius: var(--radius-lg); overflow: hidden; margin-top: var(--space-16); }
.service { background: var(--color-surface); padding: var(--space-10) var(--space-8); position: relative; transition: background var(--transition); }
.service:hover { background: var(--color-surface-2); }
.service__num { font-size: var(--text-xs); color: var(--color-text-faint); letter-spacing: 0.2em; font-variant-numeric: tabular-nums; }
.service__icon { width: 40px; height: 40px; margin-top: var(--space-6); color: var(--color-primary); }
.service__title { font-size: var(--text-xl); margin-top: var(--space-4); }
.service__desc { color: var(--color-text-muted); margin-top: var(--space-3); font-size: var(--text-base); }

/* ---------- Process ---------- */
.process__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-8); margin-top: var(--space-16); }
.process__step { position: relative; padding-top: var(--space-8); border-top: 1px solid var(--color-border); }
.process__step::before { content: ''; position: absolute; top: -1px; left: 0; width: 40px; height: 1px; background: var(--color-primary); }
.process__num { font-family: var(--font-display); font-size: var(--text-2xl); color: var(--color-primary); }
.process__title { font-size: var(--text-lg); margin-top: var(--space-3); }
.process__desc { color: var(--color-text-muted); margin-top: var(--space-2); font-size: var(--text-sm); }

/* ---------- Materials (editorial split) ---------- */
.materials { background: var(--color-surface-offset); }
.materials__split { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(var(--space-10), 5vw, var(--space-24)); align-items: center; margin-top: var(--space-16); }
.materials__visual { aspect-ratio: 4 / 5; border-radius: var(--radius-lg); position: relative; overflow: hidden; background: #000; }
.materials__tooth { width: 100%; height: 100%; display: block; object-fit: contain; mix-blend-mode: screen; }
.materials__list { display: flex; flex-direction: column; gap: var(--space-8); }
.materials__item { display: grid; grid-template-columns: auto 1fr; gap: var(--space-5); align-items: start; }
.materials__item .swatch { width: 14px; height: 14px; border-radius: 50%; margin-top: 8px; }
.materials__item h3 { font-size: var(--text-lg); }
.materials__item p { color: var(--color-text-muted); font-size: var(--text-sm); margin-top: var(--space-2); }

/* ---------- Lab / About ---------- */
.lab__stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-8); margin-top: var(--space-16); border-top: 1px solid var(--color-border); padding-top: var(--space-12); }
.lab__stat .num { font-family: var(--font-display); font-size: var(--text-3xl); color: var(--color-primary); line-height: 1; }
.lab__stat .label { color: var(--color-text-muted); font-size: var(--text-sm); margin-top: var(--space-3); }

/* ---------- Contact ---------- */
.contact { background: var(--color-surface); }
.contact__split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(var(--space-10), 5vw, var(--space-24)); margin-top: var(--space-16); align-items: start; }
.contact__card { background: var(--color-surface-offset); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-10); }
.contact__row { display: flex; gap: var(--space-4); padding-block: var(--space-4); border-bottom: 1px solid var(--color-divider); }
.contact__row:last-child { border-bottom: none; }
.contact__row .ico { color: var(--color-primary); flex: none; margin-top: 3px; }
.contact__row .k { font-size: var(--text-xs); letter-spacing: 0.16em; text-transform: uppercase; color: var(--color-text-faint); }
.contact__row .v { font-size: var(--text-base); margin-top: 2px; }
.contact__row .v a { color: var(--color-text); text-decoration: none; border-bottom: 1px solid var(--color-divider); }
.contact__row .v a:hover { color: var(--color-primary); border-color: var(--color-primary); }

.cta-band { background: linear-gradient(135deg, #1a1610, #0c0a08); border-radius: var(--radius-xl); padding: clamp(var(--space-12), 5vw, var(--space-20)); text-align: center; position: relative; overflow: hidden; }
.cta-band::before { content: ''; position: absolute; inset: 0; background: radial-gradient(60% 120% at 50% 0%, rgba(201,163,94,0.18), transparent 60%); }
.cta-band > * { position: relative; }
.cta-band h2 { color: #f4efe4; font-size: var(--text-2xl); max-width: 20ch; margin-inline: auto; }
.cta-band p { color: rgba(236,230,219,0.7); margin-top: var(--space-4); max-width: 48ch; margin-inline: auto; }
.cta-band .hero__actions { justify-content: center; margin-top: var(--space-8); }

/* ---------- Legal notice ---------- */
.legal { background: var(--color-bg); border-top: 1px solid var(--color-border); }
.legal__content { max-width: var(--content-narrow); }
.legal__block { margin-top: var(--space-10); }
.legal__block h3 { font-size: var(--text-lg); }
.legal__block p { color: var(--color-text-muted); margin-top: var(--space-3); }
.legal__block ul { list-style: disc; margin: var(--space-3) 0 0 var(--space-5); color: var(--color-text-muted); }
.legal__block li { margin-top: var(--space-2); padding-left: var(--space-2); }
.legal__block a { color: var(--color-text); text-decoration: underline; text-decoration-color: var(--color-primary); text-underline-offset: 3px; }
.legal__block a:hover { color: var(--color-primary); }
.footer__bottom a { color: inherit; text-decoration: none; }
.footer__bottom a:hover { color: var(--color-primary); }

/* ---------- Footer ---------- */
.footer { background: var(--color-surface-offset); border-top: 1px solid var(--color-border); padding-block: var(--space-16) var(--space-10); }
.footer__grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: var(--space-12); }
.footer__about { max-width: 42ch; color: var(--color-text-muted); font-size: var(--text-sm); margin-top: var(--space-5); }
.footer__col h4 { font-family: var(--font-body); font-size: var(--text-xs); letter-spacing: 0.2em; text-transform: uppercase; color: var(--color-text-faint); font-weight: 600; }
.footer__col ul { margin-top: var(--space-4); display: flex; flex-direction: column; gap: var(--space-3); }
.footer__col a { color: var(--color-text-muted); text-decoration: none; font-size: var(--text-sm); }
.footer__col a:hover { color: var(--color-primary); }
.footer__bottom { margin-top: var(--space-16); padding-top: var(--space-6); border-top: 1px solid var(--color-divider); display: flex; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap; color: var(--color-text-faint); font-size: var(--text-xs); }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.8s cubic-bezier(0.16,1,0.3,1), transform 0.8s cubic-bezier(0.16,1,0.3,1); }
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .nav__links, .header__actions .btn--ghost { display: none; }
  .menu-btn { display: grid; }
  .services__grid { grid-template-columns: 1fr; }
  .process__grid { grid-template-columns: 1fr 1fr; }
  .materials__split, .contact__split, .manifest__grid { grid-template-columns: 1fr; }
  .lab__stats { grid-template-columns: 1fr; gap: var(--space-6); }
  .footer__grid { grid-template-columns: 1fr; }
  .hero__title { max-width: 16ch; }
  .hero__canvas { opacity: 0.62; }
  .hero__content::before {
    content: '';
    position: absolute;
    inset: -10% -8% -6% -8%;
    background: radial-gradient(58% 46% at 28% 42%, rgba(5,4,3,0.62), rgba(5,4,3,0.18) 60%, transparent 78%);
    z-index: -1;
    pointer-events: none;
  }
  .hero__content { position: relative; }
}

@media (max-width: 560px) {
  .process__grid { grid-template-columns: 1fr; }
  .brand__sub { display: none; }
}

/* Mobile nav overlay */
.mobile-nav { position: fixed; inset: 0; z-index: 99; background: var(--color-bg); display: flex; flex-direction: column; justify-content: center; align-items: center; gap: var(--space-8); opacity: 0; pointer-events: none; transition: opacity 0.4s; }
.mobile-nav.is-open { opacity: 1; pointer-events: auto; }
.mobile-nav a { font-family: var(--font-display); font-size: var(--text-2xl); color: var(--color-text); text-decoration: none; }
.mobile-nav a:hover { color: var(--color-primary); }