:root {
  --bg-color: #EFE8DC;
  --text-color: #1A1A1A;
  --accent-color: #C16A28;
  --border-color: rgba(26, 26, 26, 0.1);

  --eisen-blue: #2B6CE8;
  --eisen-red: #E8453C;
  --eisen-yellow: #E8B020;
  --eisen-green: #3DAA4E;

  --page-max: 640px;
  --header-h: 3.5rem;
}

[data-theme="dark"] {
  --bg-color: #000000;
  --text-color: #E2E8F0;
  --accent-color: #D47A3A;
  --border-color: rgba(226, 232, 240, 0.1);

  --eisen-blue: #6B9AFF;
  --eisen-red: #FF7A72;
  --eisen-yellow: #FFD45A;
  --eisen-green: #6FE088;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  color-scheme: light;
}

html[data-theme="dark"] {
  color-scheme: dark;
}

html,
body {
  min-height: 100%;
  min-height: 100dvh;
  overflow-x: hidden;
}

body {
  font-family: Georgia, "Times New Roman", serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-size: clamp(1rem, 2.5vw + 0.75rem, 1.125rem);
  line-height: 1.75;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Brand letter colors (logo) */
.brand-blue { color: var(--eisen-blue); }
.brand-red { color: var(--eisen-red); }
.brand-yellow { color: var(--eisen-yellow); }
.brand-green { color: var(--eisen-green); }

.site-title .brand-blue,
.site-title .brand-red,
.site-title .brand-yellow,
.site-title .brand-green {
  transition: color 0.3s ease;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: var(--header-h);
  padding:
    max(0.75rem, env(safe-area-inset-top))
    max(1rem, env(safe-area-inset-right))
    0.75rem
    max(1rem, env(safe-area-inset-left));
  pointer-events: none;
}

.site-header > * {
  pointer-events: auto;
}

.site-title {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  font-size: clamp(0.58rem, 2vw + 0.4rem, 0.72rem);
  font-weight: 600;
  letter-spacing: 0.18em;
  line-height: 1;
  user-select: none;
  max-width: calc(100vw - 5rem);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.theme-toggle {
  position: relative;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-color);
  opacity: 0.55;
  transition: opacity 0.2s ease, color 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  /* 44px minimum touch target */
  min-width: 44px;
  min-height: 44px;
  margin: -0.5rem -0.35rem -0.5rem 0;
  padding: 0.5rem;
  -webkit-tap-highlight-color: transparent;
}

.theme-toggle:hover {
  opacity: 1;
  color: var(--accent-color);
}

.theme-toggle:active {
  opacity: 0.85;
}

/* Main content */
.page {
  width: 100%;
  max-width: var(--page-max);
  margin: 0 auto;
  padding:
    calc(var(--header-h) + max(1.5rem, env(safe-area-inset-top)))
    max(1.25rem, env(safe-area-inset-right))
    calc(6.25rem + env(safe-area-inset-bottom))
    max(1.25rem, env(safe-area-inset-left));
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
}

.lead {
  margin: 0 0 clamp(2rem, 6vw, 3.5rem);
  padding: 0;
  border: none;
  font-family: inherit;
  font-size: clamp(1.15rem, 4vw + 0.5rem, 1.35rem);
  font-weight: 400;
  font-style: italic;
  line-height: 1.45;
  color: var(--accent-color);
  text-align: center;
  text-wrap: balance;
  hyphens: none;
}

.body {
  font-size: clamp(1rem, 2vw + 0.85rem, 1.08rem);
  line-height: 1.9;
  text-wrap: pretty;
}

.body p {
  margin-bottom: clamp(1.25rem, 4vw, 1.75rem);
}

.body p:last-child {
  margin-bottom: 0;
}

/* Bottom-right aside: brand dots + motto */
.site-aside {
  position: fixed;
  bottom: max(1rem, env(safe-area-inset-bottom));
  right: max(1rem, env(safe-area-inset-right));
  z-index: 50;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.45rem;
  width: max-content;
  max-width: min(11.5rem, 34vw);
  pointer-events: none;
}

.brand-mark {
  display: flex;
  gap: 0.4rem;
  align-items: center;
  opacity: 0.55;
  transition: opacity 0.3s ease;
}

.site-motto {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  font-size: clamp(0.58rem, 1.2vw + 0.4rem, 0.68rem);
  font-weight: 400;
  line-height: 1.45;
  letter-spacing: 0.02em;
  text-align: right;
  color: var(--text-color);
  opacity: 0.5;
  text-wrap: balance;
  hyphens: none;
  transition: color 0.3s ease, opacity 0.3s ease;
}

/* Clickable motto — same size/layout as before */
button.site-motto.site-motto--link {
  display: block;
  position: relative;
  width: 100%;
  margin: 0;
  padding: 0;
  border: none;
  background: none;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  font-size: clamp(0.58rem, 1.2vw + 0.4rem, 0.68rem);
  font-weight: 400;
  line-height: 1.45;
  letter-spacing: 0.02em;
  text-align: right;
  color: var(--text-color);
  opacity: 0.5;
  text-wrap: balance;
  hyphens: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  appearance: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}

button.site-motto.site-motto--link:hover,
button.site-motto.site-motto--link:focus-visible {
  opacity: 0.85;
  color: var(--accent-color);
  outline: none;
}

.site-aside--interactive {
  pointer-events: none;
}

.site-aside--interactive .site-motto--link {
  pointer-events: auto;
}

.brand-mark span {
  display: block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  transition: background-color 0.3s ease;
}

.mark-blue { background-color: var(--eisen-blue); }
.mark-red { background-color: var(--eisen-red); }
.mark-yellow { background-color: var(--eisen-yellow); }
.mark-green { background-color: var(--eisen-green); }

/* Large screens — roomier motto column */
@media (min-width: 769px) {
  .site-aside {
    max-width: 12.5rem;
  }

  .site-motto,
  button.site-motto.site-motto--link {
    font-size: 0.68rem;
    line-height: 1.5;
  }
}

/* Tablet */
@media (max-width: 768px) {
  :root {
    --header-h: 3.25rem;
  }

  .page {
    justify-content: flex-start;
    padding-top: calc(var(--header-h) + 1.25rem);
    padding-bottom: calc(6.5rem + env(safe-area-inset-bottom));
  }

  .site-aside {
    max-width: min(9.5rem, 38vw);
  }

  .site-motto,
  button.site-motto.site-motto--link {
    font-size: clamp(0.54rem, 2.5vw + 0.32rem, 0.6rem);
    line-height: 1.35;
  }

  .lead {
    text-align: left;
  }
}

/* Small phones */
@media (max-width: 480px) {
  :root {
    --header-h: 3rem;
  }

  .site-title {
    letter-spacing: 0.12em;
  }

  .page {
    padding-left: max(1rem, env(safe-area-inset-left));
    padding-right: max(1rem, env(safe-area-inset-right));
  }

  .body {
    line-height: 1.85;
  }

  .brand-mark span {
    width: 4px;
    height: 4px;
  }

  .site-aside {
    max-width: min(8.75rem, 42vw);
    gap: 0.4rem;
  }
}

/* Very narrow (e.g. iPhone SE landscape issues) */
@media (max-width: 360px) {
  .site-title {
    letter-spacing: 0.08em;
    font-size: 0.55rem;
  }

  .site-aside {
    max-width: min(8.25rem, 44vw);
  }

  .site-motto,
  button.site-motto.site-motto--link {
    font-size: 0.53rem;
    line-height: 1.32;
  }

  .page {
    padding-bottom: calc(7rem + env(safe-area-inset-bottom));
  }
}

/* Short viewport — avoid vertical center crushing content under header */
@media (max-height: 500px) and (orientation: landscape) {
  .page {
    justify-content: flex-start;
    padding-top: calc(var(--header-h) + 0.75rem);
    padding-bottom: calc(5.75rem + env(safe-area-inset-bottom));
  }

  .lead {
    margin-bottom: 1.25rem;
    font-size: 1.1rem;
  }

  .body p {
    margin-bottom: 1rem;
  }

  .site-aside {
    max-width: min(8rem, 36vw);
  }

  .site-motto,
  button.site-motto.site-motto--link {
    font-size: 0.52rem;
    line-height: 1.3;
  }
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}