/*
 * Tugässer Design System 2.0.0
 * Foundations and reusable components shared by tugaesser.de surfaces.
 */

@font-face {
  font-family: "Public Sans";
  src: url("assets/public-sans-400.ttf") format("truetype");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Public Sans";
  src: url("assets/public-sans-600.ttf") format("truetype");
  font-style: normal;
  font-weight: 600;
  font-display: swap;
}

@font-face {
  font-family: "Public Sans";
  src: url("assets/public-sans-800.ttf") format("truetype");
  font-style: normal;
  font-weight: 800;
  font-display: swap;
}

@font-face {
  font-family: "Public Sans";
  src: url("assets/public-sans-900.ttf") format("truetype");
  font-style: normal;
  font-weight: 900;
  font-display: swap;
}

:root {
  /* Primitive color tokens */
  --tg-color-white: #ffffff;
  --tg-color-blue: #013565;
  --tg-color-brick: #8f3b32;
  --tg-color-surface: #f5f7fa;
  --tg-color-muted: #8ca3c2;
  --tg-color-border: #dbe2ec;

  /* Semantic color tokens */
  --tg-color-background: var(--tg-color-white);
  --tg-color-text: var(--tg-color-blue);
  --tg-color-primary: var(--tg-color-blue);
  --tg-color-accent: var(--tg-color-brick);
  --tg-color-on-primary: var(--tg-color-white);
  --tg-color-on-accent: var(--tg-color-white);
  --tg-color-focus: var(--tg-color-brick);
  --tg-color-success: var(--tg-color-blue);
  --tg-color-error: var(--tg-color-brick);

  /* Typography */
  --tg-font-sans: "Public Sans", system-ui, -apple-system, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --tg-font-weight-regular: 400;
  --tg-font-weight-semibold: 600;
  --tg-font-weight-bold: 800;
  --tg-font-weight-black: 900;
  --tg-text-xs: 1rem;
  --tg-text-sm: 1rem;
  --tg-text-base: 1rem;
  --tg-text-lg: 1.125rem;
  --tg-text-xl: 1.375rem;
  --tg-text-2xl: clamp(2rem, 4vw, 4rem);
  --tg-text-display: clamp(3rem, 7vw, 7rem);
  --tg-leading-tight: 1.06;
  --tg-leading-body: 1.6;
  --tg-tracking-label: 0.06em;

  /* Spacing: 8px base rhythm */
  --tg-space-1: 8px;
  --tg-space-2: 16px;
  --tg-space-3: 24px;
  --tg-space-4: 32px;
  --tg-space-5: 40px;
  --tg-space-6: 48px;
  --tg-space-8: 64px;
  --tg-space-10: 80px;
  --tg-space-12: 96px;
  --tg-space-16: 128px;
  --tg-space-section: clamp(64px, 8vw, 128px);

  /* Shape, layout and motion */
  --tg-radius-sm: 4px;
  --tg-radius-md: 8px;
  --tg-radius-round: 999px;
  --tg-border-thin: 1px;
  --tg-border-strong: 2px;
  --tg-shadow-print: none;
  --tg-shadow-print-small: none;
  --tg-content-width: 1280px;
  --tg-reading-width: 760px;
  --tg-duration-fast: 180ms;
  --tg-duration-main: 240ms;
  --tg-duration-exit: 150ms;
  --tg-ease-enter: ease-out;
  --tg-ease-exit: ease-in;

  /* Backward-compatible aliases used by the current site */
  --background: var(--tg-color-background);
  --primary: var(--tg-color-primary);
  --accent: var(--tg-color-accent);
  --surface: var(--tg-color-surface);
  --muted: var(--tg-color-muted);
  --border: var(--tg-color-border);
  --font: var(--tg-font-sans);
  --s1: var(--tg-space-1);
  --s2: var(--tg-space-2);
  --s3: var(--tg-space-3);
  --s4: var(--tg-space-4);
  --s5: var(--tg-space-5);
  --s6: var(--tg-space-6);
  --s8: var(--tg-space-8);
  --s10: var(--tg-space-10);
  --s12: var(--tg-space-12);
  --radius: var(--tg-radius-md);
  --content: var(--tg-content-width);
  --reading: var(--tg-reading-width);
  --fast: var(--tg-duration-fast);
  --main: var(--tg-duration-main);
}

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

html {
  color-scheme: light;
}

body {
  margin: 0;
  min-width: 0;
  background: var(--tg-color-background);
  color: var(--tg-color-text);
  font-family: var(--tg-font-sans);
  font-size: 18px;
  line-height: var(--tg-leading-body);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

button,
a,
input,
select,
textarea {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button,
[role="button"],
select {
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid currentColor;
  outline-offset: 4px;
}

[hidden] { display: none !important; }
.tg-inverse { background: var(--tg-color-primary); color: var(--tg-color-on-primary); }
.tg-inverse :focus-visible { outline-color: var(--tg-color-white); }
.tg-inverse .tg-label, .tg-inverse .tg-kicker { color: inherit; }

.visually-hidden,
.tg-visually-hidden {
  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,
.tg-skip-link {
  position: fixed;
  z-index: 100;
  top: var(--tg-space-2);
  left: var(--tg-space-2);
  padding: 12px var(--tg-space-2);
  border-radius: var(--tg-radius-md);
  background: var(--tg-color-background);
  color: var(--tg-color-primary);
  font-weight: var(--tg-font-weight-bold);
  transform: translateY(-160%);
  transition: transform var(--tg-duration-fast) var(--tg-ease-enter);
}

.skip-link:focus,
.tg-skip-link:focus {
  transform: translateY(0);
}

/* Action component */
.button,
.tg-button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--tg-space-2);
  padding: var(--tg-space-2) var(--tg-space-3);
  border: var(--tg-border-strong) solid var(--tg-color-primary);
  border-radius: var(--tg-radius-md);
  background: var(--tg-color-primary);
  color: var(--tg-color-on-primary);
  font-weight: var(--tg-font-weight-black);
  line-height: 1.15;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  transition: transform var(--tg-duration-fast) var(--tg-ease-enter);
}

.button--accent,
.tg-button--accent {
  border-color: var(--tg-color-accent);
  background: var(--tg-color-accent);
  color: var(--tg-color-on-accent);
}

.button--outline,
.tg-button--outline {
  background: var(--tg-color-background);
  color: var(--tg-color-primary);
}

.button--light,
.tg-button--light {
  border-color: var(--tg-color-background);
  background: var(--tg-color-background);
  color: var(--tg-color-primary);
}

.button--ghost-light,
.tg-button--ghost-light {
  border-color: var(--tg-color-background);
  background: transparent;
  color: var(--tg-color-background);
}

.button--small,
.tg-button--small {
  min-height: 44px;
  padding: 8px 16px;
  font-size: var(--tg-text-base);
}

.button-arrow,
.tg-button__arrow {
  display: block;
  font-size: 1.15em;
  line-height: 1;
  transition: transform var(--tg-duration-fast) var(--tg-ease-enter);
}

.button[aria-disabled="true"],
.button:disabled,
.tg-button[aria-disabled="true"],
.tg-button:disabled {
  border-color: var(--tg-color-border);
  background: var(--tg-color-surface);
  color: var(--tg-color-muted);
  cursor: not-allowed;
  opacity: 1;
}

/* Editorial labels */
.tg-label,
.tg-eyebrow,
.tg-kicker {
  margin: 0;
  color: var(--tg-color-accent);
  font-size: var(--tg-text-xs);
  font-weight: var(--tg-font-weight-black);
  line-height: 1.2;
  letter-spacing: var(--tg-tracking-label);
  text-transform: uppercase;
}

.tg-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.tg-eyebrow::before {
  content: "";
  display: block;
  width: 32px;
  height: 4px;
  border-radius: var(--tg-radius-sm);
  background: currentColor;
}

.tg-display {
  margin: 0;
  font-size: var(--tg-text-display);
  font-weight: var(--tg-font-weight-black);
  line-height: 1;
  letter-spacing: -0.065em;
  text-wrap: balance;
}

.tg-heading {
  margin: 0;
  font-size: var(--tg-text-2xl);
  font-weight: var(--tg-font-weight-black);
  line-height: var(--tg-leading-tight);
  letter-spacing: -0.045em;
  text-wrap: balance;
}

.tg-body {
  max-width: 70ch;
  margin: 0;
  font-size: var(--tg-text-lg);
  line-height: var(--tg-leading-body);
}

.tg-pullquote {
  max-width: 19ch;
  margin: 0;
  font-size: clamp(2rem, 4.4vw, 4.8rem);
  font-weight: var(--tg-font-weight-black);
  line-height: 0.98;
  letter-spacing: -0.05em;
  text-wrap: balance;
}

/* Brand seal */
.round-logo,
.tg-seal {
  display: block;
  height: auto;
  aspect-ratio: 896 / 876;
  object-fit: contain;
  object-position: center;
  background: var(--tg-color-background);
}

.tg-seal-frame {
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  padding: 8%;
  border-radius: 50%;
  background: var(--tg-color-white);
}
.tg-seal-frame .tg-seal { width: 100%; }
.tg-section-label {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--tg-space-2);
  margin: 0 0 var(--tg-space-4);
  font-size: var(--tg-text-base);
  font-weight: var(--tg-font-weight-semibold);
}
.tg-section-label__number {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: none;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-size: var(--tg-text-base);
  line-height: 1;
}
.tg-text-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  gap: var(--tg-space-2);
  font-weight: var(--tg-font-weight-bold);
  text-decoration-thickness: 1px;
  text-underline-offset: 6px;
}
.tg-divider { border: 0; border-top: 1px solid var(--tg-color-border); margin-block: var(--tg-space-4); }

/* Form fields */
.tg-field {
  display: grid;
  gap: var(--tg-space-1);
}

.tg-field__label {
  display: block;
  color: var(--tg-color-primary);
  font-weight: var(--tg-font-weight-bold);
  line-height: 1.3;
}

.tg-field__hint,
.tg-field__message {
  display: block;
  margin: 0;
  font-size: var(--tg-text-sm);
  line-height: 1.45;
}

.tg-field__message {
  color: var(--tg-color-error);
  font-weight: var(--tg-font-weight-bold);
}

.tg-input,
.tg-select,
.tg-textarea {
  width: 100%;
  min-height: 48px;
  padding: 11px 12px;
  border: var(--tg-border-strong) solid var(--tg-color-primary);
  border-radius: var(--tg-radius-md);
  background: var(--tg-color-background);
  color: var(--tg-color-primary);
  line-height: 1.5;
  transition: border-color var(--tg-duration-fast) var(--tg-ease-enter), box-shadow var(--tg-duration-fast) var(--tg-ease-enter);
}

.tg-textarea {
  min-height: 128px;
  resize: vertical;
}

.tg-input::placeholder,
.tg-textarea::placeholder {
  color: var(--tg-color-primary);
  opacity: 1;
}

.tg-input[aria-invalid="true"],
.tg-select[aria-invalid="true"],
.tg-textarea[aria-invalid="true"] {
  border-color: var(--tg-color-error);
  box-shadow: 0 0 0 2px var(--tg-color-background), 0 0 0 4px var(--tg-color-error);
}

.tg-input:disabled,
.tg-select:disabled,
.tg-textarea:disabled {
  border-color: var(--tg-color-border);
  background: var(--tg-color-surface);
  color: var(--tg-color-muted);
  cursor: not-allowed;
}

/* Status and callout patterns */
.tg-status {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: var(--tg-space-2);
  border: var(--tg-border-strong) solid currentColor;
  border-radius: var(--tg-radius-md);
  background: var(--tg-color-background);
  color: var(--tg-color-primary);
}

.tg-status--error {
  color: var(--tg-color-error);
}

.tg-status__mark {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: var(--tg-border-strong) solid currentColor;
  border-radius: 50%;
  font-size: var(--tg-text-sm);
  font-weight: var(--tg-font-weight-black);
  line-height: 1;
}

.tg-status strong,
.tg-status span {
  display: block;
}

.tg-status span {
  margin-top: 2px;
  font-size: var(--tg-text-sm);
  line-height: 1.45;
}

.tg-print-frame {
  border: var(--tg-border-strong) solid var(--tg-color-primary);
  border-radius: var(--tg-radius-md);
  background: var(--tg-color-background);
  box-shadow: var(--tg-shadow-print);
}

@media (hover: hover) {
  .button:hover,
  .tg-button:hover {
    border-color: var(--tg-color-accent);
    background: var(--tg-color-accent);
    color: var(--tg-color-on-accent);
  }

  .button--accent:hover,
  .tg-button--accent:hover {
    border-color: var(--tg-color-primary);
    background: var(--tg-color-primary);
    color: var(--tg-color-white);
  }

  .button--light:hover,
  .tg-button--light:hover {
    border-color: var(--tg-color-accent);
    background: var(--tg-color-accent);
    color: var(--tg-color-white);
  }

  .button--outline:hover,
  .tg-button--outline:hover {
    border-color: var(--tg-color-primary);
    background: var(--tg-color-primary);
    color: var(--tg-color-on-primary);
  }

  .button--ghost-light:hover,
  .tg-button--ghost-light:hover {
    background: var(--tg-color-background);
    color: var(--tg-color-primary);
  }

  .button:hover .button-arrow,
  .tg-button:hover .tg-button__arrow {
    transform: translateX(4px);
  }

  .tg-button:disabled:hover, .button:disabled:hover,
  .tg-button[aria-disabled="true"]:hover, .button[aria-disabled="true"]:hover {
    border-color: var(--tg-color-border);
    background: var(--tg-color-surface);
    color: var(--tg-color-primary);
    transform: none;
  }
  .tg-text-link:hover { text-decoration-thickness: 2px; }
}

@media (max-width: 767px) {
  :root {
    --tg-space-10: 64px;
    --tg-space-12: 72px;
  }

  body {
    font-size: 16px;
  }
}

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