/* ==========================================================================
   Code Symphony — Design System & Styles
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Font Face Declarations (locally hosted — DSGVO compliant)
   -------------------------------------------------------------------------- */

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../assets/fonts/inter-regular.woff2') format('woff2');
}

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../assets/fonts/inter-bold.woff2') format('woff2');
}

/* --------------------------------------------------------------------------
   2. Design Tokens (CSS Custom Properties)
   -------------------------------------------------------------------------- */

:root {
  /* Colors */
  --color-primary: #6C3CE1;
  --color-primary-light: #8B5CF6;
  --color-accent: #00D4AA;
  --color-accent-light: #34EDCA;
  --color-dark-bg: #0a0f1c;
  --color-dark-bg-lighter: #111827;
  --color-light-bg: #f8f9fc;
  --color-card-bg: #ffffff;
  --color-card-border: rgba(108, 60, 225, 0.08);
  --color-text-dark: #e2e8f0;
  --color-text-light: #1a1a2e;
  --color-text-muted: #64748b;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.5rem;
  --font-size-6xl: 4.5rem;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 20px rgba(0, 212, 170, 0.3);
  --shadow-glow-primary: 0 0 20px rgba(108, 60, 225, 0.3);
  --shadow-glow-hover: 0 0 30px rgba(0, 212, 170, 0.5);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;
}

/* --------------------------------------------------------------------------
   3. Reset & Base Styles
   -------------------------------------------------------------------------- */

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

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-text-light);
  background-color: var(--color-light-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

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

ul {
  list-style: none;
}

/* --------------------------------------------------------------------------
   4. Utility Classes
   -------------------------------------------------------------------------- */

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Scroll animations */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* --------------------------------------------------------------------------
   5. Navigation
   -------------------------------------------------------------------------- */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  padding: 0 var(--space-lg);
  transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

.nav.scrolled {
  background-color: rgba(10, 15, 28, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
}

.nav__logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-text-dark);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav__logo:hover {
  color: var(--color-text-dark);
}

.nav__logo-icon {
  width: 32px;
  height: 32px;
}

.nav__logo span {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav__link {
  color: var(--color-text-dark);
  font-size: var(--font-size-sm);
  font-weight: 400;
  letter-spacing: 0.02em;
  opacity: 0.8;
  transition: opacity var(--transition-base), color var(--transition-base);
}

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

/* Mobile hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  z-index: 110;
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text-dark);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav__hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.nav__hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   6. Hero Section
   -------------------------------------------------------------------------- */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-dark-bg);
  overflow: hidden;
  padding: var(--space-5xl) var(--space-lg) var(--space-4xl);
}

/* Animated background gradient orbs */
.hero__bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 0;
}

.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.15;
  animation: float 20s ease-in-out infinite;
}

.hero__orb--1 {
  width: 600px;
  height: 600px;
  background: var(--color-primary);
  top: -10%;
  right: -10%;
  animation-delay: 0s;
}

.hero__orb--2 {
  width: 400px;
  height: 400px;
  background: var(--color-accent);
  bottom: -5%;
  left: -5%;
  animation-delay: -7s;
}

.hero__orb--3 {
  width: 300px;
  height: 300px;
  background: var(--color-primary-light);
  top: 40%;
  left: 50%;
  animation-delay: -14s;
}

/* Grid overlay */
.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 1;
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
}

.hero__title {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--color-text-dark);
  margin-bottom: var(--space-lg);
}

.hero__title span {
  display: block;
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.7;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-2xl);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  font-size: var(--font-size-base);
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  box-shadow: var(--shadow-glow-primary);
}

.hero__cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(108, 60, 225, 0.5);
  color: #fff;
}

.hero__cta:active {
  transform: translateY(0);
}

.hero__cta-arrow {
  transition: transform var(--transition-base);
}

.hero__cta:hover .hero__cta-arrow {
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   7. Services Section
   -------------------------------------------------------------------------- */

.services {
  padding: var(--space-5xl) var(--space-lg);
  background-color: var(--color-light-bg);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-4xl);
}

.section-label {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-text-light);
  letter-spacing: -0.01em;
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  max-width: var(--max-width);
  margin: 0 auto;
}

.service-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-2xl);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(108, 60, 225, 0.15);
}

.service-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  font-size: 1.5rem;
  background: linear-gradient(135deg, rgba(108, 60, 225, 0.1), rgba(0, 212, 170, 0.1));
}

.service-card__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-light);
  margin-bottom: var(--space-sm);
}

.service-card__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   8. Contact Section
   -------------------------------------------------------------------------- */

.contact {
  padding: var(--space-5xl) var(--space-lg);
  background-color: #fff;
}

.contact__inner {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.contact__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
}

.contact__text {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2xl);
  line-height: 1.7;
}

.contact__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-2xl);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  font-size: var(--font-size-base);
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  box-shadow: var(--shadow-glow-primary);
}

.contact__cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(108, 60, 225, 0.5);
  color: #fff;
}

.contact__email {
  display: block;
  margin-top: var(--space-xl);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.contact__email a {
  color: var(--color-primary);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   9. Footer
   -------------------------------------------------------------------------- */

.footer {
  padding: var(--space-2xl) var(--space-lg);
  background-color: var(--color-dark-bg);
  color: var(--color-text-dark);
}

.footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer__copy {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.footer__links {
  display: flex;
  gap: var(--space-xl);
}

.footer__link {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-base);
}

.footer__link:hover {
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   10. Legal Pages (Impressum, Datenschutz)
   -------------------------------------------------------------------------- */

.legal-page {
  min-height: 100vh;
  background-color: var(--color-light-bg);
}

.legal-page .nav {
  background-color: rgba(10, 15, 28, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.legal-header {
  background-color: var(--color-dark-bg);
  padding: calc(var(--nav-height) + var(--space-3xl)) var(--space-lg) var(--space-3xl);
}

.legal-header__title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--color-text-dark);
  max-width: var(--max-width);
  margin: 0 auto;
}

.legal-content {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-lg) var(--space-5xl);
}

.legal-content h2 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-light);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.legal-content h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text-light);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.legal-content p {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.legal-content ul {
  list-style: disc;
  padding-left: var(--space-xl);
  margin-bottom: var(--space-md);
}

.legal-content li {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-xs);
}

.legal-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* --------------------------------------------------------------------------
   11. Animations
   -------------------------------------------------------------------------- */

@keyframes float {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(30px, -40px) scale(1.05);
  }
  66% {
    transform: translate(-20px, 20px) scale(0.95);
  }
}

/* --------------------------------------------------------------------------
   12. Responsive
   -------------------------------------------------------------------------- */

/* Tablet */
@media (max-width: 768px) {
  .hero__title {
    font-size: var(--font-size-4xl);
  }

  .services__grid {
    grid-template-columns: 1fr;
    max-width: 480px;
  }

  .nav__links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: rgba(10, 15, 28, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    gap: var(--space-2xl);
    transition: right var(--transition-base);
    z-index: 105;
  }

  .nav__links.open {
    right: 0;
  }

  .nav__link {
    font-size: var(--font-size-lg);
  }

  .nav__hamburger {
    display: flex;
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }

  .legal-header__title {
    font-size: var(--font-size-3xl);
  }
}

/* Mobile */
@media (max-width: 480px) {
  :root {
    --space-lg: 1rem;
  }

  .hero__title {
    font-size: var(--font-size-3xl);
  }

  .hero__subtitle {
    font-size: var(--font-size-base);
  }

  .section-title {
    font-size: var(--font-size-2xl);
  }

  .contact__title {
    font-size: var(--font-size-2xl);
  }

  .legal-header__title {
    font-size: var(--font-size-2xl);
  }
}