/* ==========================================================================
   RMK STUDIO — style.css
   Design-System: Farben, Typografie, Abstände, Schatten
   ========================================================================== */

:root {
  /* Farben */
  --color-primary: #22c55e;
  --color-primary-dark: #16a34a;
  --color-primary-soft: rgba(34, 197, 94, 0.14);
  --color-bg: #0a0a0a;
  --color-bg-2: #000000;
  --color-surface: #171717;
  --color-surface-2: #1f1f1f;
  --color-text: #ffffff;
  --color-text-muted: #a3a3a3;
  --color-border: rgba(255, 255, 255, 0.1);
  --color-border-soft: rgba(255, 255, 255, 0.06);
  --color-border-accent: rgba(34, 197, 94, 0.35);

  /* Typografie */
  --font-body: "Inter", Arial, Helvetica, sans-serif;
  --font-display: "Inter", Arial, Helvetica, sans-serif;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.25rem;
  --text-xl: 1.5rem;
  --text-2xl: clamp(1.75rem, 3vw, 2.25rem);
  --text-3xl: clamp(2rem, 4vw, 3.25rem);
  --text-hero: clamp(2.6rem, 6vw, 5.4rem);
  --tracking-wide: 0.18em;
  --tracking-wider: 0.28em;

  /* Abstände (4px-Skala) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 2.75rem;
  --space-8: 3.5rem;
  --space-9: 4.5rem;
  --space-10: 6rem;

  /* Layout */
  --max-width: 1320px;
  --radius: 2px;
  --header-height: 96px;
  --header-height-mobile: 72px;

  /* Schatten / Effekte */
  --shadow-md: 0 20px 60px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 28px rgba(34, 197, 94, 0.35);
  --transition: 0.25s ease;
  --transition-slow: 0.4s ease;
}

/* ==========================================================================
   Reset & Basis
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-body);
  background:
    radial-gradient(circle at 18% 8%, rgba(34, 197, 94, 0.09), transparent 28%),
    radial-gradient(circle at 85% 18%, rgba(34, 197, 94, 0.07), transparent 28%),
    linear-gradient(180deg, var(--color-bg), var(--color-bg-2));
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

button {
  font: inherit;
}

a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

.container {
  width: min(94%, var(--max-width));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: #052e16;
  font-weight: 700;
  padding: var(--space-3) var(--space-5);
  z-index: 1000;
}

.skip-link:focus {
  left: var(--space-4);
  top: var(--space-4);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ==========================================================================
   Wiederverwendbare Elemente
   ========================================================================== */

.accent {
  color: var(--color-primary);
}

.label {
  display: inline-block;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  font-size: var(--text-xs);
  font-weight: 800;
  margin-bottom: var(--space-3);
}

.section-title {
  font-size: var(--text-3xl);
  line-height: 1.08;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.section-head {
  margin-bottom: var(--space-7);
}

.divider {
  width: 70px;
  height: 4px;
  background: var(--color-primary);
  margin: var(--space-5) 0 var(--space-6);
  box-shadow: var(--shadow-glow);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  min-height: 52px;
  padding: 0 var(--space-6);
  background: var(--color-primary);
  color: #052e16;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: var(--text-sm);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius);
  transition: var(--transition);
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

.btn.outline {
  background: transparent;
  color: var(--color-text);
}

.btn.outline:hover {
  color: var(--color-primary);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border-soft);
  transition: var(--transition);
}

.nav {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.brand {
  display: flex;
  align-items: center;
}

.header-logo {
  height: 96px;
  width: auto;
}

.footer-logo {
  height: 64px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-links a {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text);
  opacity: 0.9;
  position: relative;
  white-space: nowrap;
  padding: var(--space-2) 0;
}

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

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

.nav-links a.is-active {
  opacity: 1;
  color: var(--color-primary);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border-accent);
  background: transparent;
  color: var(--color-text);
  border-radius: var(--radius);
  position: relative;
  cursor: pointer;
}

.menu-toggle .bar,
.menu-toggle .bar::before,
.menu-toggle .bar::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  height: 2px;
  background: currentColor;
  transition: var(--transition);
}

.menu-toggle .bar {
  top: 50%;
  transform: translateY(-50%);
}

.menu-toggle .bar::before {
  top: -8px;
}

.menu-toggle .bar::after {
  top: 8px;
}

.menu-toggle[aria-expanded="true"] .bar {
  background: transparent;
}

.menu-toggle[aria-expanded="true"] .bar::before {
  top: 0;
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .bar::after {
  top: 0;
  transform: rotate(-45deg);
}

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

.hero {
  padding: var(--space-8) 0 var(--space-7);
  min-height: calc(100dvh - var(--header-height));
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: var(--space-9);
  align-items: center;
}

.portrait-wrap {
  position: relative;
  padding: var(--space-6) 0 0 var(--space-7);
}

.portrait-wrap::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 78%;
  height: 86%;
  border: 1px solid var(--color-border-accent);
}

.portrait {
  position: relative;
  border: 2px solid var(--color-primary);
  padding: var(--space-4);
  background: rgba(0, 0, 0, 0.6);
  box-shadow: var(--shadow-md);
}

.portrait img {
  aspect-ratio: 4 / 4.6;
  object-fit: cover;
  width: 100%;
  filter: contrast(1.05) saturate(0.92);
}

.vertical-text {
  position: absolute;
  left: 8px;
  top: 50%;
  transform: translateY(-50%) rotate(-90deg);
  color: var(--color-primary);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  font-weight: 800;
}

.hero-kicker {
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  font-weight: 800;
  font-size: var(--text-sm);
  margin-bottom: var(--space-5);
}

.hero h1 {
  font-size: var(--text-hero);
  line-height: 1.04;
  text-transform: uppercase;
  letter-spacing: 0.015em;
  max-width: 850px;
}

.hero h1 .accent {
  display: block;
}

.hero-sub {
  font-size: var(--text-lg);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-4);
}

.hero-text {
  color: var(--color-text-muted);
  max-width: 600px;
  margin-bottom: var(--space-4);
}

.hero-tools {
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-7);
}

.hero-actions {
  display: flex;
  gap: var(--space-5);
  flex-wrap: wrap;
}

/* ==========================================================================
   Projekte / Services Karten
   ========================================================================== */

.section {
  padding: var(--space-9) 0;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.project-card {
  position: relative;
  min-height: 380px;
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  background: linear-gradient(180deg, var(--color-surface-2), var(--color-surface));
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  border-radius: var(--radius);
  transition: var(--transition-slow);
}

.project-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, .15), rgba(0, 0, 0, .88));
  z-index: 1;
}

.project-card::after {
  content: "";
  position: absolute;
  inset: 14px;
  border: 1px solid var(--color-border-accent);
  opacity: 0;
  transform: scale(.98);
  transition: var(--transition-slow);
  z-index: 2;
}

.project-card:hover,
.project-card:focus-within {
  transform: translateY(-8px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.project-card:hover::after,
.project-card:focus-within::after {
  opacity: 1;
  transform: scale(1);
}

.project-card .project-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: grayscale(.25) brightness(.6);
  transition: var(--transition-slow);
}

.project-card:hover .project-bg,
.project-card:focus-within .project-bg {
  transform: scale(1.06);
  filter: grayscale(0) brightness(.7);
}

.project-card .project-content {
  position: relative;
  z-index: 3;
}

.card-index {
  color: var(--color-primary);
  font-weight: 800;
  font-size: var(--text-base);
  margin-bottom: var(--space-8);
  display: block;
}

.project-card h3 {
  text-transform: uppercase;
  line-height: 1.1;
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
  transition: var(--transition);
}

.project-card:hover h3 {
  color: var(--color-primary);
}

.project-card p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}

.card-link {
  color: var(--color-primary);
  text-transform: uppercase;
  font-weight: 800;
  letter-spacing: 0.06em;
  font-size: var(--text-sm);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

.service-card {
  position: relative;
  min-height: 320px;
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  background: linear-gradient(180deg, var(--color-surface-2), var(--color-surface));
  border-radius: var(--radius);
  transition: var(--transition);
}

.service-card::before,
.service-card::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  border-color: var(--color-primary);
  border-style: solid;
  opacity: .8;
}

.service-card::before {
  right: 10px;
  top: 10px;
  border-width: 2px 2px 0 0;
}

.service-card::after {
  right: 10px;
  bottom: 10px;
  border-width: 0 2px 2px 0;
}

.service-card:hover,
.service-card:focus-within {
  transform: translateY(-6px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.service-card .card-icon {
  font-size: 2.2rem;
  margin-bottom: var(--space-4);
  color: var(--color-text);
}

.service-card h3 {
  text-transform: uppercase;
  line-height: 1.1;
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
}

.service-card p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  margin-bottom: var(--space-5);
}

/* ==========================================================================
   About / Skills
   ========================================================================== */

.about-section {
  border-top: 1px solid var(--color-border-soft);
  border-bottom: 1px solid var(--color-border-soft);
  background: rgba(255, 255, 255, 0.015);
}

.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--space-9);
  align-items: start;
}

.about-copy {
  color: var(--color-text-muted);
  max-width: 520px;
  margin-bottom: var(--space-5);
}

.signature {
  color: var(--color-primary);
  font-style: italic;
  font-size: var(--text-xl);
  margin-bottom: var(--space-5);
}

.about-subtitle {
  font-size: 1.1rem;
  margin-top: var(--space-6);
  margin-bottom: var(--space-2);
  color: var(--color-primary);
}

/* ==========================================================================
   Projekt-Detailseiten (rmk-ai-studio.html, website-agent.html,
   network-diagnostic.html, berichtsheft-agent.html, bildbearbeitung.html,
   corporate-design.html, motion-design.html)
   ========================================================================== */

.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}

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

.project-cover {
  position: relative;
  border: 2px solid var(--color-primary);
  padding: var(--space-3);
  background: rgba(0, 0, 0, 0.6);
  box-shadow: var(--shadow-md);
  margin-bottom: var(--space-8);
}

.project-cover img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: contrast(1.05) saturate(0.92);
}

.project-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: var(--space-9);
  align-items: start;
}

.project-copy {
  color: var(--color-text-muted);
  max-width: 620px;
  margin-bottom: var(--space-5);
}

.project-meta {
  border: 1px solid var(--color-border);
  background: linear-gradient(180deg, var(--color-surface-2), var(--color-surface));
  padding: var(--space-6);
  border-radius: var(--radius);
  display: grid;
  gap: var(--space-5);
}

.project-meta div {
  border-bottom: 1px solid var(--color-border-soft);
  padding-bottom: var(--space-4);
}

.project-meta div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.project-meta dt {
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  font-size: var(--text-xs);
  font-weight: 800;
  margin-bottom: var(--space-2);
}

.project-meta dd {
  font-size: var(--text-sm);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
  flex-shrink: 0;
}

.status-dot.is-muted {
  background: var(--color-text-muted);
}

.process-list {
  display: grid;
  gap: var(--space-5);
  margin-top: var(--space-5);
}

.process-list li {
  display: flex;
  gap: var(--space-5);
  align-items: baseline;
}

.process-list .step-index {
  color: var(--color-primary);
  font-weight: 800;
  font-size: var(--text-lg);
  min-width: 2.4rem;
}

.process-list strong {
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin-bottom: var(--space-1);
}

.process-list p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.feature-list {
  display: grid;
  gap: var(--space-3);
  margin: var(--space-5) 0;
}

.feature-list li {
  position: relative;
  padding-left: var(--space-6);
  color: var(--color-text-muted);
}

.feature-list li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 800;
}

.tool-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tool-tags span {
  border: 1px solid var(--color-border-accent);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-radius: var(--radius);
  color: var(--color-text-muted);
}

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  margin-bottom: var(--space-8);
}

.compare-item {
  border: 1px solid var(--color-border);
  background: rgba(0, 0, 0, 0.4);
  padding: var(--space-3);
}

.compare-item img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.compare-item span {
  display: block;
  text-align: center;
  padding-top: var(--space-3);
  color: var(--color-primary);
  text-transform: uppercase;
  font-size: var(--text-xs);
  font-weight: 800;
  letter-spacing: var(--tracking-wide);
}

/* ==========================================================================
   CTA
   ========================================================================== */

.cta-section {
  padding-bottom: var(--space-8);
}

.cta-box {
  border: 1px solid var(--color-primary);
  background: linear-gradient(135deg, var(--color-primary-soft), rgba(255, 255, 255, .02));
  padding: var(--space-7) var(--space-8);
  display: grid;
  grid-template-columns: 110px 1.3fr 1fr;
  gap: var(--space-7);
  align-items: center;
  border-radius: var(--radius);
}

.mail-circle {
  width: 92px;
  height: 92px;
  border: 1px dashed var(--color-primary);
  border-radius: 50%;
  color: var(--color-primary);
  display: grid;
  place-items: center;
  font-size: 2.2rem;
}

.cta-box h2 {
  font-size: var(--text-2xl);
  line-height: 1.08;
  text-transform: uppercase;
}

.cta-box p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}

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

.site-footer {
  border-top: 1px solid var(--color-border-soft);
  padding: var(--space-7) 0 var(--space-5);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr 1fr;
  gap: var(--space-7);
  align-items: start;
}

.footer-title {
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  font-size: var(--text-xs);
  font-weight: 800;
  margin-bottom: var(--space-4);
}

.footer-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2) var(--space-5);
}

.footer-links a,
.footer-contact a,
.footer-contact span,
.copyright {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.footer-links a:hover,
.footer-contact a:hover {
  color: var(--color-primary);
}

.footer-contact {
  display: grid;
  gap: var(--space-2);
}

.copyright {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-soft);
}

/* ==========================================================================
   Scroll-Reveal (JS-gesteuert)
   ========================================================================== */

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ==========================================================================
   Responsive — Tablet: 768–1199px
   ========================================================================== */

@media (max-width: 1199px) {
  .nav-links {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 3%;
    right: 3%;
    grid-template-columns: 1fr;
    background: var(--color-surface);
    border: 1px solid var(--color-border-accent);
    padding: var(--space-5);
    border-radius: var(--radius);
  }

  .nav-links.is-open {
    display: grid;
    gap: var(--space-4);
  }

  .menu-toggle {
    display: block;
  }

  .hero-grid,
  .about-grid,
  .cta-box,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .service-grid,
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .project-grid {
    grid-template-columns: 1fr;
  }

  .compare-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Responsive — Mobile: bis 767px
   ========================================================================== */

@media (max-width: 767px) {
  :root {
    --header-height: var(--header-height-mobile);
  }

  .nav {
    min-height: var(--header-height-mobile);
  }

  .header-logo {
    height: 52px;
  }

  .hero {
    padding-top: var(--space-6);
  }

  .hero-grid {
    gap: var(--space-6);
  }

  .portrait-wrap {
    padding-left: var(--space-4);
  }

  .hero h1 {
    font-size: clamp(2.4rem, 13vw, 3.6rem);
  }

  .service-grid,
  .card-grid {
    grid-template-columns: 1fr;
  }

  .cta-box {
    padding: var(--space-6) var(--space-5);
  }

  .footer-links {
    grid-template-columns: 1fr;
  }

  .btn {
    width: 100%;
  }

  .nav-links {
    top: var(--header-height-mobile);
  }
}