/*
 * lampesberger.at — styles
 * Own design system (custom properties, mobile-first, no framework, no CDN).
 * WCAG 2.2 Level AA: contrast >= 4.5:1 for body text, visible focus,
 * keyboard navigation, reduced-motion support.
 */

/* ---------- Design tokens ---------- */

:root {
  --color-bg: #faf9f7;
  --color-surface: #ffffff;
  --color-text: #20242a;
  --color-text-muted: #5a6470;
  --color-accent: #0f5e63;
  --color-accent-dark: #0b4a4e;
  --color-accent-soft: #e4edef;
  --color-border: #e3e1dc;
  --color-error: #9a2b2b;

  --font-body: "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-display: "Source Serif 4", Georgia, "Times New Roman", serif;

  --text-base: 1rem; /* 16px */
  --text-small: 0.875rem;
  --text-h2: clamp(1.5rem, 3.5vw, 1.875rem);
  --text-h1: clamp(2.25rem, 7vw, 3.5rem);

  --line-height: 1.65;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.75rem;
  --space-lg: 3rem;
  --space-xl: 4.5rem;

  --page-max: 64rem;
  --content-max: 46rem;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --shadow-soft: 0 2px 12px rgba(32, 36, 42, 0.08);
}

/* ---------- Reset & base ---------- */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--line-height);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
}

a:hover {
  color: var(--color-accent-dark);
  text-decoration-thickness: 2px;
}

/* Visible focus for all interactive elements (WCAG 2.4.7) */
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 2px;
}

::selection {
  background-color: var(--color-accent-soft);
}

/* Skip link: visually hidden until focused (WCAG 2.4.1) */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-sm);
  z-index: 100;
  padding: 0.6rem 1rem;
  background-color: var(--color-text);
  color: var(--color-bg);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: var(--space-sm);
  color: var(--color-bg);
}

/* ---------- Layout ---------- */

.container {
  width: 100%;
  max-width: var(--page-max);
  margin: 0 auto;
  padding-left: var(--space-sm);
  padding-right: var(--space-sm);
}

@media (min-width: 40em) {
  .container {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }
}

main {
  display: block;
}

.section {
  padding-top: var(--space-lg);
  padding-bottom: var(--space-lg);
  max-width: var(--content-max);
}

.section h2 {
  font-family: var(--font-display);
  font-size: var(--text-h2);
  font-weight: 600;
  line-height: 1.25;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.section p + p {
  margin-top: var(--space-sm);
}

/* ---------- Header / navigation ---------- */

.site-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  min-height: 3.75rem;
}

.brand {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  white-space: nowrap;
}

.brand:hover {
  color: var(--color-accent);
}

.nav-links {
  display: none;
  align-items: center;
  gap: var(--space-md);
}

.nav-links a {
  font-size: var(--text-small);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
}

.nav-links a:hover {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.nav-links a.lang-switch {
  color: var(--color-accent);
  font-weight: 700;
}

/* Burger button (mobile) */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  cursor: pointer;
}

.nav-toggle svg {
  width: 1.25rem;
  height: 1.25rem;
  fill: currentColor;
}

@media (min-width: 40em) {
  .nav-links {
    display: flex;
  }

  .nav-toggle,
  .mobile-menu {
    display: none;
  }
}

/* Mobile menu panel */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: none;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-md);
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.mobile-menu.is-open {
  display: flex;
}

.mobile-menu-close {
  align-self: flex-end;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  cursor: pointer;
  margin-top: -0.75rem;
}

.mobile-menu-close svg {
  width: 1.25rem;
  height: 1.25rem;
  fill: currentColor;
}

.mobile-menu a {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  padding: var(--space-xs) 0;
  border-bottom: 1px solid var(--color-border);
}

.mobile-menu a:hover {
  color: var(--color-accent);
}

.mobile-menu a.lang-switch {
  color: var(--color-accent);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 700;
  border-bottom: none;
}

/* ---------- Hero ---------- */

.hero {
  padding-top: var(--space-xl);
  padding-bottom: var(--space-lg);
}

.hero-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.hero-role {
  font-size: var(--text-small);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.hero-name {
  font-family: var(--font-display);
  font-size: var(--text-h1);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--space-sm);
}

.hero-portrait {
  max-width: 240px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--color-border);
  align-self: flex-start;
}

@media (min-width: 48em) {
  .hero-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .hero-portrait {
    max-width: 280px;
  }
}

/* ---------- Profile ---------- */

/* ---------- Link list ---------- */

.link-list {
  list-style: none;
}

.link-list li + li {
  margin-top: 0;
}

.link-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
}

.link-list a::after {
  content: "→";
  color: var(--color-accent);
  transition: transform 0.15s ease;
}

.link-list a:hover {
  color: var(--color-accent);
}

.link-list a:hover::after {
  transform: translateX(4px);
}

@media (prefers-reduced-motion: reduce) {
  .link-list a::after {
    transition: none;
  }
}

/* ---------- Footer ---------- */

.site-footer {
  margin-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-surface);
  padding-top: var(--space-md);
  padding-bottom: var(--space-md);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  font-size: var(--text-small);
  color: var(--color-text-muted);
}

@media (min-width: 40em) {
  .footer-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.footer-inner a {
  color: var(--color-text-muted);
  font-weight: 500;
}

.footer-inner a:hover {
  color: var(--color-accent);
}

/* ---------- Cookie banner ---------- */

.cookie-banner {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 70;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -2px 12px rgba(32, 36, 42, 0.08);
  font-size: var(--text-small);
}

.cookie-banner p {
  flex: 1 1 20rem;
  text-align: center;
  color: var(--color-text);
}

.cookie-banner .btn {
  flex-shrink: 0;
}

.cookie-banner.is-hidden {
  display: none;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  padding: 0.6rem 1.25rem;
  font-family: var(--font-body);
  font-size: var(--text-small);
  font-weight: 600;
  line-height: 1.2;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-accent);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--color-accent-dark);
  color: #ffffff;
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  color: var(--color-text);
  background-color: var(--color-accent-soft);
}

/* ---------- External link dialog ---------- */

.external-link-dialog {
  /* Centered in the viewport across all modern browsers (the UA default
     centering of <dialog> is not reliable with explicit widths). */
  position: fixed;
  inset: 0;
  margin: auto;
  border: none;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  padding: var(--space-md);
  max-width: 26rem;
  width: calc(100% - 2rem);
  max-height: calc(100vh - 2rem);
  overflow: auto;
  background-color: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-body);
}

.external-link-dialog::backdrop {
  background-color: rgba(32, 36, 42, 0.55);
}

.external-link-dialog h2 {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.external-link-warning {
  font-size: var(--text-small);
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.external-link-url {
  display: block;
  font-size: var(--text-small);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  word-break: break-all;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-xs) var(--space-sm);
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.external-link-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-xs);
}

/* ---------- Imprint ---------- */

.imprint {
  max-width: var(--content-max);
  padding-top: var(--space-xl);
}

.imprint h1 {
  font-family: var(--font-display);
  font-size: var(--text-h1);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
}

.imprint section {
  padding-top: var(--space-md);
  padding-bottom: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.imprint section:first-of-type {
  border-top: none;
  padding-top: 0;
}

.imprint h2 {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.ecg-list {
  display: grid;
  grid-template-columns: 1fr;
  row-gap: var(--space-sm);
}

.ecg-list > div {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.25rem;
}

@media (min-width: 40em) {
  .ecg-list {
    grid-template-columns: 1fr 1fr;
    column-gap: var(--space-lg);
  }
}

.ecg-list dt {
  font-size: var(--text-small);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.ecg-list dd {
  font-weight: 500;
}

.doc-link {
  display: inline-block;
  margin-top: var(--space-xs);
  font-weight: 600;
}

/* ---------- 404 ---------- */

.error-page {
  max-width: var(--content-max);
  padding-top: var(--space-xl);
  padding-bottom: var(--space-xl);
}

.error-code {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.error-page h1 {
  font-family: var(--font-display);
  font-size: var(--text-h2);
  font-weight: 600;
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.error-page p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}