/* GruhnSoft - Modern Redesign 2026 */

/* ===================== Custom Properties ===================== */
:root {
  --color-primary: #0071BC;
  --color-primary-light: #3399d6;
  --color-accent: #00b4d8;
  --color-dark: #0a1628;
  --color-dark-lighter: #111d33;
  --color-text-light: #e8edf3;
  --color-text-dark: #1a1a2e;
  --color-text-muted: #8892a4;
  --color-card-bg: rgba(255, 255, 255, 0.04);
  --color-card-border: rgba(255, 255, 255, 0.08);
  --color-section-light: #f8f9fa;
  --color-footer-bg: #060d18;
  --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --transition-fast: 0.2s ease;
  --transition-med: 0.4s ease;
  --transition-slow: 0.7s ease;
  --max-width: 1140px;
  --nav-height: 64px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-main);
  line-height: 1.6;
  color: var(--color-text-light);
  background: var(--color-dark);
  overflow-x: hidden;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-light);
}

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

ul {
  list-style: none;
}

h1, h2, h3, h4 {
  line-height: 1.2;
  font-weight: 700;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===================== Navigation ===================== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 0.75rem 0;
  background: linear-gradient(180deg, rgba(10, 22, 40, 0.85) 0%, rgba(10, 22, 40, 0.4) 70%, transparent 100%);
  transition: background var(--transition-med), box-shadow var(--transition-med), padding var(--transition-med);
}

.nav.scrolled {
  background: rgba(10, 22, 40, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
  padding: 0.4rem 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo img {
  height: 32px;
  width: auto;
  transition: opacity var(--transition-fast);
}

.nav-logo:hover img {
  opacity: 0.85;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  color: var(--color-text-light);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  position: relative;
  padding: 0.25rem 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-fast);
}

.nav-links a:hover {
  color: var(--color-accent);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-icon {
  display: none;
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-light);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ===================== Hero ===================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding: calc(var(--nav-height) + 2rem) 1.5rem 4rem;
  background: url('../img/hero-bg.webp') center center / cover no-repeat var(--color-dark);
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(10, 22, 40, 0.3) 0%, rgba(10, 22, 40, 0.7) 100%);
  z-index: 1;
}

/* Claude Code stamp / sticker */
.claude-stamp {
  position: absolute;
  bottom: 2.5rem;
  right: 2.5rem;
  z-index: 3;
  text-decoration: none;
  transform: rotate(-15deg);
  opacity: 0;
  animation: stampFadeIn 0.8s ease 1.8s forwards;
  transition: transform var(--transition-fast);
}

@keyframes stampFadeIn {
  from { opacity: 0; transform: rotate(-20deg) scale(0.9); }
  to { opacity: 1; transform: rotate(-15deg) scale(1); }
}

.claude-stamp:hover {
  transform: rotate(-8deg) scale(1.05);
}

.claude-stamp-inner {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 1rem 0.5rem 0.7rem;
  background: rgba(10, 22, 40, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1.5px solid rgba(217, 119, 87, 0.4);
  border-radius: 8px;
  box-shadow:
    0 2px 12px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.claude-logo {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  opacity: 0.9;
}

.claude-stamp:hover .claude-logo {
  opacity: 1;
}

.claude-stamp-text {
  font-size: 0.65rem;
  line-height: 1.3;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.claude-stamp-text strong {
  color: rgba(255, 255, 255, 0.75);
  font-weight: 600;
}

.claude-stamp:hover .claude-stamp-text {
  color: rgba(255, 255, 255, 0.7);
}

.claude-stamp:hover .claude-stamp-text strong {
  color: rgba(255, 255, 255, 0.95);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--color-text-light) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: heroTextIn 1s ease 0.3s forwards;
  opacity: 0;
}

@keyframes heroTextIn {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--color-text-muted);
  margin-bottom: 2.5rem;
  animation: heroTextIn 1s ease 0.6s forwards;
  opacity: 0;
}

.hero-cta {
  display: inline-block;
  padding: 0.85rem 2.5rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  font-weight: 600;
  font-size: 1rem;
  border-radius: 50px;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  animation: heroTextIn 1s ease 0.9s forwards;
  opacity: 0;
}

.hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 113, 188, 0.4);
  color: #fff;
}

/* ===================== Sections (general) ===================== */
.section {
  padding: 6rem 0;
}

.section-dark {
  background: var(--color-dark);
}

.section-darker {
  background: var(--color-dark-lighter);
}

.section-light {
  background: var(--color-section-light);
  color: var(--color-text-dark);
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  text-align: center;
  margin-bottom: 1rem;
}

.section-dark .section-title,
.section-darker .section-title {
  background: linear-gradient(135deg, #fff 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 3.5rem;
  font-size: 1.05rem;
}

.section-light .section-subtitle {
  color: #555;
}

/* ===================== Fade-in animation ===================== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===================== Kompetenzen (Skills) ===================== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.skill-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: 16px;
  padding: 2rem 1.5rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.skill-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 113, 188, 0.15);
  border-color: rgba(0, 180, 216, 0.25);
}

.skill-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 1.25rem;
  color: var(--color-accent);
}

.skill-icon svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.skill-card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.6rem;
  color: var(--color-text-light);
}

.skill-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ===================== Referenzen ===================== */
.ref-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 2rem;
  align-items: center;
  justify-items: center;
}

.ref-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 1.5rem;
  border-radius: 12px;
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.ref-item:hover {
  transform: translateY(-3px);
  background: rgba(0, 113, 188, 0.08);
}

.ref-item img {
  height: 48px;
  width: auto;
  max-width: 130px;
  object-fit: contain;
  opacity: 0.75;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.ref-item:hover img {
  opacity: 1;
  transform: scale(1.05);
}

.ref-item span {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-align: center;
}

.ref-item:hover span {
  color: var(--color-text-light);
}

/* ===================== Ueber uns ===================== */
.about-content {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.about-content p {
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
  color: #444;
  line-height: 1.7;
}

a.about-location {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  padding: 0.75rem 1.5rem;
  background: #fff;
  border-radius: 50px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  font-size: 0.95rem;
  color: var(--color-text-dark);
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

a.about-location:hover {
  box-shadow: 0 4px 20px rgba(0, 113, 188, 0.15);
  transform: translateY(-2px);
  color: var(--color-primary);
}

a.about-location svg {
  width: 18px;
  height: 18px;
  stroke: var(--color-primary);
  fill: none;
  stroke-width: 2;
}

/* ===================== Kontakt ===================== */
.contact-content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.contact-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: 20px;
  padding: 3rem 2rem;
  margin-bottom: 1.5rem;
}

.contact-name {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.contact-title {
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  font-size: 0.95rem;
}

.contact-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.6rem 0;
  font-size: 1rem;
}

.contact-item svg {
  width: 20px;
  height: 20px;
  stroke: var(--color-accent);
  fill: none;
  stroke-width: 2;
  flex-shrink: 0;
}

.contact-item a {
  color: var(--color-text-light);
}

.contact-item a:hover {
  color: var(--color-accent);
}

/* ===================== Footer ===================== */
.footer {
  background: var(--color-footer-bg);
  padding: 3rem 0 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  text-align: center;
}

.footer-impressum {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.footer-impressum strong {
  color: var(--color-text-light);
  font-weight: 600;
  font-size: 0.95rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

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

.footer-copy {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.25);
}

/* ===================== Datenschutz page ===================== */
.legal-page {
  padding-top: calc(var(--nav-height) + 3rem);
  padding-bottom: 4rem;
  min-height: 80vh;
}

.legal-content {
  max-width: 800px;
  margin: 0 auto;
}

.legal-content h1 {
  font-size: 2rem;
  margin-bottom: 2rem;
  color: var(--color-text-light);
}

.legal-content h2 {
  font-size: 1.3rem;
  margin: 2rem 0 0.75rem;
  color: var(--color-text-light);
}

.legal-content h4 {
  font-size: 1.1rem;
  margin: 1.5rem 0 0.5rem;
  color: var(--color-text-light);
}

.legal-content p,
.legal-content li {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 0.75rem;
}

.legal-content ul {
  padding-left: 1.5rem;
  list-style: disc;
}

.legal-content address {
  font-style: normal;
  margin: 1rem 0;
  color: var(--color-text-muted);
}

/* ===================== Responsive ===================== */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    max-width: 300px;
    height: 100vh;
    flex-direction: column;
    background: rgba(10, 22, 40, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: calc(var(--nav-height) + 2rem) 2rem 2rem;
    gap: 0.25rem;
    transition: right var(--transition-med);
    box-shadow: -4px 0 30px rgba(0, 0, 0, 0.3);
  }

  .nav-links.open {
    right: 0;
  }

  .nav-links a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.1rem;
    padding: 0.75rem 0.5rem;
    border-radius: 8px;
    transition: background var(--transition-fast);
  }

  .nav-links a:hover,
  .nav-links a:active {
    background: rgba(255, 255, 255, 0.06);
  }

  .nav-links a::after {
    display: none;
  }

  .nav-icon {
    display: block;
    width: 22px;
    height: 22px;
    flex-shrink: 0;
    stroke: var(--color-accent);
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
  }

  .section {
    padding: 4rem 0;
  }

  .skills-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .ref-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    overflow: hidden;
  }

  .ref-item {
    padding: 1rem 0.5rem;
  }

  .ref-item img {
    max-width: 100px;
  }

  .contact-card {
    padding: 2rem 1.25rem;
  }

  .footer-inner {
    gap: 1rem;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .ref-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1025px) {
  .skills-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .ref-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}