/* ============================================================
   Self-hosted Inter (v20) — latin + latin-ext
   Both 400 and 500 weight are served from the same variable-
   font file; the font-weight range tells the browser which
   axis to use. No Google Fonts request at runtime.
   ============================================================ */

/* latin-ext — extended Western / Central European characters */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  src: url('/fonts/inter-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7,
                 U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF,
                 U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB,
                 U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
/* latin — standard Latin incl. German Umlauts (ä ö ü ß) */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  src: url('/fonts/inter-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC,
                 U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329,
                 U+2000-206F, U+20AC, U+2122, U+2191, U+2193,
                 U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ============================================================
   Kals K3 — Design Tokens & Components
   All values from RELAUNCH_BRIEF.md §6
   ============================================================ */

:root {
  --accent:       #b75d3e;
  --accent-dark:  #8a3f26;
  --accent-bg:    #faf3ef;
  --accent-tint:  #f0d4c4;
  --ink:          #1a1815;
  --ink-soft:     #5f5a52;
  --ink-mute:     #8a847b;
  --surface:      #ffffff;
  --surface-soft: #f7f3ed;
  --line:         rgba(26, 24, 21, 0.08);

  --font-sans:    "Inter", system-ui, -apple-system, sans-serif;
  --font-mono:    "JetBrains Mono", "Fira Mono", monospace;

  --radius-card:  10px;
  --radius-btn:   6px;
  --radius-icon:  8px;
  --radius-pill:  10px;

  --shadow-card:  0 1px 4px rgba(0,0,0,0.06);
}

/* ============================================================
   Reset & Base
   ============================================================ */

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; text-decoration: none; }

ul, ol { margin: 0; padding: 0; list-style: none; }

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

/* ============================================================
   Typography
   ============================================================ */

.k3-h1 {
  font-size: 36px;
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0 0 18px;
}

.k3-h2 {
  font-size: 24px;
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.005em;
  color: var(--ink);
  margin: 0 0 16px;
}

.k3-h3 {
  font-size: 16px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--ink);
  margin: 0 0 8px;
}

.k3-eyebrow {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 14px;
}

.k3-body {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.k3-lead {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.k3-meta {
  font-size: 12px;
  color: var(--ink-mute);
}

/* ============================================================
   Layout
   ============================================================ */

.k3-container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.k3-section {
  padding: 72px 0;
}

.k3-section--sm {
  padding: 48px 0;
}

/* ============================================================
   Buttons
   ============================================================ */

.k3-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 500;
  font-family: var(--font-sans);
  cursor: pointer;
  border: none;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  text-decoration: none;
  white-space: nowrap;
}

.k3-btn-primary {
  background: var(--accent);
  color: #fff;
}
.k3-btn-primary:hover { background: var(--accent-dark); }

.k3-btn-secondary {
  background: transparent;
  color: var(--ink);
  border: 0.5px solid var(--ink);
}
.k3-btn-secondary:hover { background: var(--surface-soft); }

.k3-btn-ghost {
  background: transparent;
  color: var(--accent);
  padding: 0;
  font-size: 13px;
}
.k3-btn-ghost:hover { color: var(--accent-dark); }

/* ============================================================
   Navigation
   ============================================================ */

.k3-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--surface);
  border-bottom: 0.5px solid var(--line);
}

.k3-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.k3-nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.k3-nav__logo-mark {
  width: 34px;
  height: 34px;
  background: var(--accent);
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: -0.5px;
  flex-shrink: 0;
}

.k3-nav__brand {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
}

.k3-nav__links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.k3-nav__link {
  font-size: 14px;
  color: var(--ink-soft);
  transition: color 0.15s;
}
.k3-nav__link:hover,
.k3-nav__link--active { color: var(--ink); }

.k3-nav__cta {
  flex-shrink: 0;
}

.k3-nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.k3-nav__hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.2s;
}

/* Mobile nav */
.k3-nav__mobile {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 12px 0 16px;
  border-top: 0.5px solid var(--line);
}
.k3-nav__mobile a {
  font-size: 15px;
  color: var(--ink);
  padding: 8px 0;
  border-bottom: 0.5px solid var(--line);
}
.k3-nav__mobile .k3-btn-primary { color: #fff; }
.k3-nav__mobile.is-open { display: flex; }

/* ============================================================
   Hero
   ============================================================ */

.k3-hero {
  padding: 80px 0 72px;
}

.k3-hero__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 56px;
  align-items: center;
}

.k3-hero__text { max-width: 560px; }

.k3-hero__headline { margin-bottom: 20px; }

.k3-hero__subline {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-soft);
  margin-bottom: 32px;
  max-width: 480px;
}

.k3-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.k3-hero__portrait {
  aspect-ratio: 1 / 1.15;
  background: var(--accent-bg);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.k3-hero__portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.k3-hero__portrait-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--accent-dark);
  opacity: 0.6;
  font-size: 13px;
  font-weight: 500;
}

.k3-hero__portrait-badge {
  position: absolute;
  bottom: 16px;
  left: 16px;
  right: 16px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(4px);
  padding: 10px 14px;
  border-radius: 8px;
}

/* ============================================================
   Trust Bar
   ============================================================ */

.k3-trust-bar {
  background: var(--surface-soft);
  border-top: 0.5px solid var(--line);
  border-bottom: 0.5px solid var(--line);
  padding: 20px 0;
}

.k3-trust-bar__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.k3-trust-bar__stats {
  display: flex;
  gap: 28px;
  align-items: center;
  flex-wrap: wrap;
}

.k3-trust-bar__stat {
  font-size: 12px;
  color: var(--ink-mute);
}

.k3-trust-bar__stat strong {
  color: var(--ink);
  font-weight: 500;
}

.k3-trust-bar__refs {
  font-size: 11px;
  color: var(--ink-mute);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

/* ============================================================
   Section header
   ============================================================ */

.k3-section-header {
  margin-bottom: 40px;
}

.k3-section-header--center {
  text-align: center;
}

/* ============================================================
   Service Cards
   ============================================================ */

.k3-services__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.k3-card {
  background: var(--surface);
  border: 0.5px solid var(--line);
  border-radius: var(--radius-card);
  padding: 24px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.15s, transform 0.15s;
  color: inherit;
  text-decoration: none;
}
.k3-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.08); transform: translateY(-1px); }

.k3-card__icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-icon);
  background: var(--accent-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--accent);
  font-size: 22px;
  flex-shrink: 0;
}

.k3-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin: 12px 0 14px;
}

.k3-tag {
  font-size: 10px;
  padding: 3px 9px;
  background: var(--accent-bg);
  color: var(--accent-dark);
  border-radius: var(--radius-pill);
  font-weight: 500;
  white-space: nowrap;
}

.k3-card__footer {
  border-top: 0.5px solid var(--line);
  padding-top: 12px;
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ============================================================
   Why Me
   ============================================================ */

.k3-why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.k3-why-item__number {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 12px;
}

.k3-why-item__icon {
  font-size: 28px;
  line-height: 1;
  color: var(--accent);
  margin-bottom: 14px;
}

/* ============================================================
   Process Steps
   ============================================================ */

.k3-process__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 0.5px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.k3-process__step {
  padding: 28px 24px;
  border-right: 0.5px solid var(--line);
}
.k3-process__step:last-child { border-right: none; }

.k3-process__num {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 12px;
  line-height: 1;
}

.k3-process__title {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 8px;
}

/* ============================================================
   About Teaser (on home)
   ============================================================ */

.k3-about-teaser {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.k3-about-teaser__photo {
  aspect-ratio: 4 / 5;
  background: var(--accent-bg);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.k3-about-teaser__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ============================================================
   CTA Block (dark)
   ============================================================ */

.k3-cta-block {
  background: var(--ink);
  padding: 72px 0;
  text-align: center;
}

.k3-cta-block .k3-h2 { color: #fff; }

.k3-cta-block p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 15px;
  max-width: 520px;
  margin: 0 auto 32px;
}

/* ============================================================
   Footer
   ============================================================ */

.k3-footer {
  background: var(--surface-soft);
  border-top: 0.5px solid var(--line);
  padding: 48px 0 32px;
}

.k3-footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.k3-footer__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.k3-footer__tagline {
  font-size: 13px;
  color: var(--ink-mute);
  line-height: 1.6;
}

.k3-footer__heading {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 14px;
}

.k3-footer__links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.k3-footer__links a {
  font-size: 13px;
  color: var(--ink-soft);
  transition: color 0.15s;
}
.k3-footer__links a:hover { color: var(--ink); }

.k3-footer__bottom {
  border-top: 0.5px solid var(--line);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.k3-footer__copy {
  font-size: 12px;
  color: var(--ink-mute);
}

.k3-footer__legal {
  display: flex;
  gap: 20px;
}

.k3-footer__legal a {
  font-size: 12px;
  color: var(--ink-mute);
  transition: color 0.15s;
}
.k3-footer__legal a:hover { color: var(--ink-soft); }

/* ============================================================
   Service Page
   ============================================================ */

.k3-page-hero {
  padding: 60px 0 48px;
  border-bottom: 0.5px solid var(--line);
}

.k3-page-hero__icon {
  width: 56px;
  height: 56px;
  background: var(--accent-bg);
  border-radius: var(--radius-icon);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 28px;
  margin-bottom: 24px;
}

.k3-richtext {
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}
.k3-richtext h2 { font-size: 20px; font-weight: 500; color: var(--ink); margin: 2em 0 0.6em; }
.k3-richtext h3 { font-size: 16px; font-weight: 500; color: var(--ink); margin: 1.5em 0 0.5em; }
.k3-richtext ul { margin: 0.5em 0 1em; padding-left: 1.4em; list-style: disc; }
.k3-richtext ol { margin: 0.5em 0 1em; padding-left: 1.4em; list-style: decimal; }
.k3-richtext li { margin-bottom: 0.3em; }
.k3-richtext a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.k3-richtext strong { color: var(--ink); font-weight: 500; }

/* ============================================================
   Reference Cards
   ============================================================ */

.k3-refs__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.k3-ref-card {
  border: 0.5px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--surface);
  transition: box-shadow 0.15s;
}
.k3-ref-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.08); }

.k3-ref-card__image {
  aspect-ratio: 16 / 9;
  background: var(--accent-bg);
  overflow: hidden;
}
.k3-ref-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.k3-ref-card__body { padding: 20px; }

/* ============================================================
   Contact Form
   ============================================================ */

.k3-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.k3-form__group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.k3-form__label {
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
}

.k3-form__input,
.k3-form__textarea {
  padding: 10px 14px;
  border: 0.5px solid var(--line);
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--surface);
  transition: border-color 0.15s;
  outline: none;
}
.k3-form__input:focus,
.k3-form__textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-bg);
}

.k3-form__textarea { min-height: 140px; resize: vertical; }

.k3-form__error {
  font-size: 12px;
  color: #c0392b;
}

.k3-form__success {
  padding: 16px 20px;
  background: var(--accent-bg);
  border: 0.5px solid var(--accent-tint);
  border-radius: var(--radius-card);
  font-size: 14px;
  color: var(--accent-dark);
}

/* ============================================================
   Alerts
   ============================================================ */

.k3-alert {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 18px;
  border-radius: var(--radius-card);
  font-size: 14px;
  line-height: 1.5;
  border: 0.5px solid transparent;
}
.k3-alert i { font-size: 18px; flex-shrink: 0; margin-top: 1px; }
.k3-alert--success {
  background: #f0faf3;
  border-color: #6bcb8b;
  color: #1a6635;
}
.k3-alert--error {
  background: #fff4f4;
  border-color: #f0a0a0;
  color: #8b1a1a;
}

/* ============================================================
   Tag filter
   ============================================================ */

.k3-tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.k3-tag-filter__btn {
  padding: 6px 14px;
  border-radius: 999px;
  border: 0.5px solid var(--line);
  background: var(--surface);
  font-size: 13px;
  color: var(--ink-soft);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.k3-tag-filter__btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.k3-tag-filter__btn.is-active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ============================================================
   Divider
   ============================================================ */

.k3-divider {
  height: 0.5px;
  background: var(--line);
  border: none;
  margin: 0;
}

/* ============================================================
   Breadcrumb
   ============================================================ */

.k3-breadcrumb {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 12px;
  color: var(--ink-mute);
  margin-bottom: 24px;
}
.k3-breadcrumb a { color: var(--ink-mute); }
.k3-breadcrumb a:hover { color: var(--ink-soft); }
.k3-breadcrumb__sep { opacity: 0.4; }

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 900px) {
  .k3-hero__grid { grid-template-columns: 1fr; gap: 40px; }
  .k3-hero__portrait { max-width: 360px; }
  .k3-services__grid { grid-template-columns: 1fr; }
  .k3-why-grid { grid-template-columns: 1fr; gap: 28px; }
  .k3-process__grid { grid-template-columns: 1fr 1fr; }
  .k3-process__step:nth-child(2) { border-right: none; }
  .k3-process__step:nth-child(3) { border-top: 0.5px solid var(--line); }
  .k3-process__step:nth-child(4) { border-top: 0.5px solid var(--line); border-right: none; }
  .k3-about-teaser { grid-template-columns: 1fr; }
  .k3-footer__grid { grid-template-columns: 1fr 1fr; }
  .k3-refs__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  /* Contact page two-column → single column */
  .k3-contact-grid { grid-template-columns: 1fr !important; gap: 40px !important; }
}

@media (max-width: 680px) {
  .k3-h1 { font-size: 28px; }
  .k3-h2 { font-size: 20px; }
  .k3-section { padding: 40px 0; }
  .k3-hero { padding: 48px 0 40px; }
  .k3-nav__links, .k3-nav__cta { display: none; }
  .k3-nav__hamburger { display: flex; }
  .k3-trust-bar__inner { flex-direction: column; align-items: flex-start; gap: 12px; }
  .k3-trust-bar__refs { display: none; }
  .k3-process__grid { grid-template-columns: 1fr; }
  .k3-process__step { border-right: none; border-bottom: 0.5px solid var(--line); }
  .k3-process__step:last-child { border-bottom: none; }
  .k3-footer__grid { grid-template-columns: 1fr; gap: 28px; }
  .k3-footer__bottom { flex-direction: column; align-items: flex-start; }
  .k3-refs__grid { grid-template-columns: 1fr; }
}