/* =========================
   ServoTech Design Tokens + Base Styles
   Optimiert für Performance, Konsistenz und Accessibility
   ========================= */

/* =========================
   1) Fonts (local)
   ========================= */

@font-face {
  font-family: "Lato";
  src: url("../fonts/lato/lato-v25-latin-regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Lato";
  src: url("../fonts/lato/lato-v25-latin-700.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Montserrat";
  src: url("../fonts/montserrat/montserrat-v31-latin-500.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Montserrat";
  src: url("../fonts/montserrat/montserrat-v31-latin-600.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Montserrat";
  src: url("../fonts/montserrat/montserrat-v31-latin-700.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Montserrat";
  src: url("../fonts/montserrat/montserrat-v31-latin-800.woff2") format("woff2");
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}

/* =========================
   2) Reset
   ========================= */

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

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

body,
h1,
h2,
h3,
h4,
h5,
h6,
p,
ul,
ol,
figure,
blockquote {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

img,
picture,
svg,
video,
canvas {
  display: block;
  max-width: 100%;
  height: auto;
}

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

button {
  border: 0;
  background: none;
  padding: 0;
  cursor: pointer;
}

address {
  font-style: normal;
}

/* =========================
   3) Design Tokens
   ========================= */

:root {
  --color-primary: #1b3a5c;
  --color-primary-soft: #254565;
  --color-primary-dark: #122b46;
  --color-secondary: #2d9b70;
  --color-tertiary: #4a4e6f;
  --color-accent: #00b4d8;
  --color-cta: #f2994a;
  --color-cta-dark: #db8438;

  --color-bg: #f8f7f4;
  --color-surface: #e9e2d8;
  --color-light: #eef2f6;
  --color-soft: #d7dce4;
  --color-medium: #9aa3b5;

  --color-text: #17324f;
  --color-text-muted: #4a4e6f;
  --color-heading: var(--color-primary);
  --color-white: #ffffff;
  --color-black: #111111;
  --color-border: #d7dce4;
  --color-border-strong: #bcccdc;

  --font-family-base: "Lato", Arial, Helvetica, sans-serif;
  --font-family-heading: "Montserrat", Arial, Helvetica, sans-serif;

  --fs-300: 0.875rem;
  --fs-400: 1rem;
  --fs-500: 1.125rem;
  --fs-600: 1.25rem;
  --fs-700: 1.5rem;
  --fs-800: 2rem;
  --fs-900: 2.75rem;

  --lh-tight: 1.15;
  --lh-base: 1.6;
  --lh-relaxed: 1.7;

  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Semantische Layout-Tokens */
  --flow-space-sm: 0.75rem;
  --flow-space-md: 1rem;
  --flow-space-lg: 1.5rem;
  --flow-space-xl: 2rem;

  --section-space-sm: clamp(3rem, 5vw, 4rem);
  --section-space-md: clamp(4rem, 6vw, 5.5rem);
  --section-space-lg: clamp(5rem, 8vw, 7rem);

  --section-header-gap: clamp(1rem, 1.5vw, 1.25rem);
  --section-content-gap: clamp(2rem, 3vw, 3rem);
  --grid-gap: clamp(1.25rem, 2vw, 2rem);
  --grid-gap-lg: clamp(2rem, 3vw, 3rem);
  --card-padding: clamp(1.25rem, 2vw, 2rem);
  --card-padding-sm: clamp(1rem, 1.75vw, 1.5rem);
  --card-stack-gap: 0.875rem;

  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1.25rem;

  --shadow-sm: 0 2px 10px rgba(17, 17, 17, 0.06);
  --shadow-md: 0 10px 26px rgba(17, 17, 17, 0.09);

  --container-max: 1200px;
  --container-narrow: 880px;
  --header-height: 88px;

  --transition-fast: 180ms ease;
  --transition-base: 260ms ease;

  --section-bg-default: #ffffff;
  --section-bg-alt: linear-gradient(180deg, rgba(8, 26, 43, 0.03) 0%, rgba(8, 26, 43, 0) 100%);
  --section-bg-brand: var(--color-primary);
}

/* =========================
   4) Base Typography / Body
   ========================= */

body {
  min-height: 100%;
  min-width: 320px;
  font-family: var(--font-family-base);
  font-size: var(--fs-400);
  line-height: var(--lh-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

main {
  display: block;
}

section {
  position: relative;
}

p {
  max-width: 65ch;
}

h1,
h2,
h3,
h4,
h5,
h6,
.main-nav a,
.main-nav button {
  font-family: var(--font-family-heading);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--color-heading);
  line-height: var(--lh-tight);
}

h1 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.625rem, 3vw, 2.375rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  letter-spacing: -0.01em;
}

h4 {
  font-size: 1.125rem;
}

p + p {
  margin-top: var(--flow-space-md);
}

/* =========================
   5) Links / Focus / Selection
   ========================= */

a {
  color: inherit;
  text-decoration: none;
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    opacity var(--transition-fast),
    transform var(--transition-fast);
}

a:hover {
  color: var(--color-secondary);
}

/* WCAG 2.1 AA: Links im Fließtext nicht nur über Farbe unterscheidbar */
main :is(p, li, blockquote) a:not([class]) {
  text-decoration: underline;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

main :is(p, li, blockquote) a:not([class]):hover,
main :is(p, li, blockquote) a:not([class]):focus-visible {
  text-decoration-thickness: 0.14em;
}

::selection {
  background: var(--color-primary);
  color: var(--color-white);
}

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

@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;
  }
}

/* =========================
   6) Helpers
   ========================= */

.text-center {
  text-align: center;
}

.text-white {
  color: var(--color-white);
}

.bg-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.bg-secondary {
  background-color: var(--color-secondary);
  color: var(--color-white);
}

.bg-surface {
  background-color: var(--color-surface);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* =========================
   7) Skip Link
   ========================= */

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-md);
  z-index: 3000;
  background: var(--color-cta);
  color: var(--color-white);
  padding: 0.875rem 1rem;
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  top: var(--space-md);
}

/* =========================
   8) Small Screens
   ========================= */

@media (max-width: 767px) {
  body {
    font-size: 0.98rem;
  }
}