@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/ibm-plex-mono-400.woff2') format('woff2');
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('fonts/ibm-plex-mono-500.woff2') format('woff2');
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('fonts/ibm-plex-mono-600.woff2') format('woff2');
}
@font-face {
  font-family: 'Syne';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url('fonts/syne.woff2') format('woff2');
}

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

:root {
  --bg: #0a0e14;
  --surface: #111620;
  --border: #1e2a38;
  --accent: #00d4aa;
  --accent2: #0ea5e9;
  --text: #e2e8f0;
  --muted: #64748b;
  --mono: 'IBM Plex Mono', monospace;
  --sans: 'Syne', sans-serif;
}

html { scroll-behavior: smooth; }

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

/* Background grid */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,212,170,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,170,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

/* ─── NAV ─── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2.5rem;
  background: rgba(10,14,20,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--accent);
  letter-spacing: 0.05em;
  text-decoration: none;
}
.nav-logo span { color: var(--muted); }

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  text-decoration: none;
  letter-spacing: 0.08em;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--accent); }

.nav-cta {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 0.45rem 1.1rem;
  border-radius: 3px;
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
  letter-spacing: 0.06em;
}
.nav-cta:hover { background: var(--accent); color: var(--bg); }

/* ─── HERO ─── */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 2.5rem 4rem;
  position: relative;
  z-index: 1;
}

.hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
}

.hero-tag {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeUp 0.6s 0.1s forwards;
}
.hero-tag::before {
  content: '';
  width: 2rem;
  height: 1px;
  background: var(--accent);
}

h1 {
  font-size: clamp(3rem, 7vw, 6.5rem);
  font-weight: 800;
  line-height: 1.0;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp 0.7s 0.25s forwards;
}
h1 em {
  font-style: normal;
  color: var(--accent);
}

.hero-sub {
  font-family: var(--mono);
  font-size: 0.95rem;
  color: var(--muted);
  max-width: 540px;
  line-height: 1.8;
  margin-bottom: 3rem;
  opacity: 0;
  animation: fadeUp 0.7s 0.4s forwards;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.7s 0.55s forwards;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg);
  padding: 0.85rem 2rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  border-radius: 3px;
  text-decoration: none;
  transition: opacity 0.2s, transform 0.2s;
}
.btn-primary:hover { opacity: 0.85; transform: translateY(-1px); }

.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.85rem 2rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  border-radius: 3px;
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s;
}
.btn-ghost:hover { border-color: var(--accent2); color: var(--accent2); }

/* Floating terminal decoration */
.hero-terminal {
  position: absolute;
  right: 6%;
  top: 50%;
  transform: translateY(-50%);
  width: min(420px, 42vw);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  opacity: 0;
  animation: fadeLeft 0.8s 0.7s forwards;
}

@media (max-width: 900px) {
  .hero-terminal { display: none; }
}

.terminal-bar {
  background: #161d2b;
  padding: 0.6rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border);
}
.terminal-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
}
.terminal-dot:nth-child(1) { background: #ff5f57; }
.terminal-dot:nth-child(2) { background: #febc2e; }
.terminal-dot:nth-child(3) { background: #28c840; }
.terminal-title {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  margin-left: auto;
  margin-right: auto;
}

.terminal-body {
  padding: 1.25rem 1.5rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  line-height: 2;
}
.t-prompt { color: var(--accent); }
.t-cmd { color: var(--text); }
.t-out { color: var(--muted); }
.t-ok { color: #28c840; }
.t-warn { color: #febc2e; }
.t-cursor {
  display: inline-block;
  width: 8px; height: 14px;
  background: var(--accent);
  vertical-align: middle;
  animation: blink 1s step-end infinite;
}

/* ─── SECTIONS ─── */
section {
  position: relative;
  z-index: 1;
  padding: 6rem 2.5rem;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.section-label::after {
  content: '';
  flex: 1;
  max-width: 3rem;
  height: 1px;
  background: var(--accent);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.section-desc {
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--muted);
  max-width: 560px;
  line-height: 1.8;
  margin-bottom: 3.5rem;
}

/* ─── SERVICES ─── */
#services { border-top: 1px solid var(--border); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5px;
  background: var(--border);
  border: 1px solid var(--border);
}

.service-card {
  background: var(--surface);
  padding: 2.5rem;
  transition: background 0.25s;
  cursor: default;
}
.service-card:hover { background: #141c2a; }

.service-icon {
  width: 2.5rem;
  height: 2.5rem;
  margin-bottom: 1.5rem;
  color: var(--accent);
}

.service-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.service-card p {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.8;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1.5rem;
}
.service-tag {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  color: var(--accent2);
  border: 1px solid rgba(14,165,233,0.25);
  padding: 0.2rem 0.55rem;
  border-radius: 2px;
}

/* ─── EXPERTISE ─── */
#expertise { border-top: 1px solid var(--border); }

.expertise-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

@media (max-width: 700px) {
  .expertise-grid { grid-template-columns: 1fr; }
}

.expertise-col h3 {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.skill-row {
  margin-bottom: 1.1rem;
}
.skill-row-top {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text);
  margin-bottom: 0.4rem;
}
.skill-pct { color: var(--muted); }
.skill-bar {
  height: 2px;
  background: var(--border);
  border-radius: 1px;
  overflow: hidden;
}
.skill-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 1px;
  transform-origin: left;
  animation: growBar 1s ease-out forwards;
  transform: scaleX(0);
}

/* ─── CERTIFICATIONS ─── */
#certifications { border-top: 1px solid var(--border); }

.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.cert-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2rem 1.75rem;
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: border-color 0.25s, transform 0.25s;
}
.cert-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.cert-img {
  width: 5rem;
  height: 5rem;
  object-fit: contain;
}

.cert-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.3;
}

.cert-year {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-top: auto;
}

/* ─── APPROACH ─── */
#approach { border-top: 1px solid var(--border); }

.approach-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0;
  counter-reset: step;
  border: 1px solid var(--border);
}

.approach-step {
  padding: 2.5rem 2rem;
  border-right: 1px solid var(--border);
  position: relative;
  counter-increment: step;
}
.approach-step:last-child { border-right: none; }

.approach-step::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 1.5rem;
}

.approach-step h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.approach-step p {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
  line-height: 1.8;
}

/* ─── PROJECTS ─── */
#projects { border-top: 1px solid var(--border); }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: border-color 0.25s;
}

.project-card:hover { border-color: var(--accent); }

.project-card-header {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.project-card-header .service-icon {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  color: var(--accent);
}

.project-card-header h3 {
  font-size: 1.25rem;
  font-weight: 700;
}

.project-card p {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.7;
  flex: 1;
}

.project-link {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--accent);
  text-decoration: none;
  transition: opacity 0.2s;
  align-self: flex-start;
}

.project-link:hover { opacity: 0.75; }

/* ─── CONTACT ─── */
#contact {
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

@media (max-width: 700px) {
  .contact-inner { grid-template-columns: 1fr; }
}

.contact-text h2 { margin-bottom: 1rem; }

.contact-text p {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 2rem;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}
.contact-link:hover { color: var(--accent); }
.contact-link svg { width: 1rem; height: 1rem; flex-shrink: 0; color: var(--accent); }

.contact-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2.5rem;
}

.contact-card-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.contact-card h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.contact-card p {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 2rem;
  line-height: 1.7;
}

/* ─── FOOTER ─── */
footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: 2rem 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copy {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}
.footer-links a {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--accent); }

/* ─── IMPRESSUM PAGE ─── */
.impressum-main {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
  padding: 8rem 2.5rem 6rem;
}

.page-eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.page-eyebrow::after {
  content: '';
  flex: 1;
  max-width: 3rem;
  height: 1px;
  background: var(--accent);
}

.impressum-main h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 0.5rem;
  opacity: 1;
  animation: none;
}

.impressum-subtitle {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 3rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
}

.impressum-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2rem 2.5rem;
  margin-bottom: 1.25rem;
}

.impressum-block-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--accent);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.impressum-block address,
.impressum-block p {
  font-style: normal;
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--text);
  line-height: 2;
}

.impressum-block a {
  color: var(--accent);
  text-decoration: none;
  transition: opacity 0.2s;
}
.impressum-block a:hover { opacity: 0.75; }

.impressum-notice {
  border: 1px solid rgba(0,212,170,0.2);
  background: rgba(0,212,170,0.04);
  border-radius: 6px;
  padding: 1.5rem 2.5rem;
  margin-top: 2rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  line-height: 1.9;
}

.impressum-notice strong {
  color: var(--text);
}

/* ─── ANIMATIONS ─── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeLeft {
  from { opacity: 0; transform: translateX(30px) translateY(-50%); }
  to   { opacity: 1; transform: translateX(0) translateY(-50%); }
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}
@keyframes growBar {
  to { transform: scaleX(1); }
}

/* ─── RESPONSIVE ─── */

/* Hide nav links on smaller screens */
@media (max-width: 780px) {
  .nav-links { display: none; }
}

/* ─── BLOG ─── */
.blog-main {
  padding-top: 7rem;
  min-height: 100vh;
}

.blog-main h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  margin-bottom: 1rem;
}

.blog-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 3rem;
}

.blog-card {
  display: block;
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, transform 0.2s;
}

.blog-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.blog-card-date {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.blog-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.blog-card-desc {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.blog-card-tags { margin-top: 0.75rem; }

/* Post page */
.blog-post-main {
  padding-top: 7rem;
  min-height: 100vh;
}

.blog-back {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--accent);
  text-decoration: none;
  margin-bottom: 2rem;
  opacity: 0.8;
  transition: opacity 0.2s;
}

.blog-back:hover { opacity: 1; }

.blog-post-header {
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.blog-post-header h1 {
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 800;
  margin: 0.5rem 0 1rem;
}

.blog-post-tags { margin-top: 1rem; }

.blog-post-content {
  font-family: var(--mono);
  font-size: 0.875rem;
  line-height: 1.9;
  color: var(--text);
  max-width: 72ch;
}

.blog-post-content h2 {
  font-family: var(--sans);
  font-size: 1.4rem;
  font-weight: 700;
  margin: 2.5rem 0 1rem;
  color: var(--text);
}

.blog-post-content h3 {
  font-family: var(--sans);
  font-size: 1.1rem;
  font-weight: 700;
  margin: 2rem 0 0.75rem;
  color: var(--text);
}

.blog-post-content p { margin-bottom: 1.25rem; }

.blog-post-content a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(0,212,170,0.3);
  transition: border-color 0.2s;
}

.blog-post-content a:hover { border-color: var(--accent); }

.blog-post-content ul,
.blog-post-content ol {
  padding-left: 1.5rem;
  margin-bottom: 1.25rem;
}

.blog-post-content li { margin-bottom: 0.4rem; }

.blog-post-content code {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.15em 0.4em;
  font-size: 0.85em;
  color: var(--accent2);
}

.blog-post-content pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.25rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

.blog-post-content pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--text);
}

.blog-post-content blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1rem;
  color: var(--muted);
  margin: 1.5rem 0;
}

.blog-post-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
  font-size: 0.8rem;
}

.blog-post-content th,
.blog-post-content td {
  border: 1px solid var(--border);
  padding: 0.6rem 1rem;
  text-align: left;
}

.blog-post-content th {
  background: var(--surface);
  color: var(--accent);
}

/* Landscape phones (~640-900px wide, short height) */
@media (max-width: 900px) and (max-height: 500px) {
  #hero { min-height: auto; padding-top: 5rem; }
  .contact-inner { grid-template-columns: 1fr; }
  .approach-steps { grid-template-columns: 1fr 1fr; }
  .approach-step:nth-child(2) { border-right: none; }
}

@media (max-width: 640px) {
  nav { padding: 1rem 1.25rem; }
  section { padding: 4rem 1.25rem; }
  #hero { padding: 7rem 1.25rem 3rem; }
  .approach-steps { grid-template-columns: 1fr; }
  .approach-step { border-right: none; border-bottom: 1px solid var(--border); }
  footer { flex-direction: column; gap: 1rem; text-align: center; }
  .impressum-main { padding: 6rem 1.25rem 4rem; }
  .impressum-block { padding: 1.5rem; }
}