/* ========================================
   JENS FEHRMANN — Modern One-Page Website
   Mobile-First / Responsive Design
   ======================================== */

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

:root {
  --color-bg: #171C21;
  --color-bg-alt: #1d2228;
  --color-surface: #242a31;
  --color-text: #FEFEFE;
  --color-text-muted: #8b929a;
  --color-accent: #ECBC1F;
  --color-accent-light: #f5cd4a;
  --color-accent-glow: rgba(236, 188, 31, 0.15);
  --color-white: #FEFEFE;
  --color-border: rgba(254, 254, 254, 0.08);
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

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

/* i18n — FOUC prevention (hide text until translation loaded) */
html.i18n-loading [data-i18n],
html.i18n-loading [data-i18n-html],
html.i18n-loading [data-i18n-list] {
  visibility: hidden;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-accent-light);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--color-white);
}

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

address {
  font-style: normal;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  border-radius: 100px;
  border: none;
  cursor: pointer;
  transition: all 0.35s var(--ease-out);
  text-decoration: none;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-bg);
  box-shadow: 0 4px 20px rgba(236, 188, 31, 0.3);
}

.btn--primary:hover {
  background: var(--color-accent-light);
  color: var(--color-bg);
  box-shadow: 0 8px 30px rgba(236, 188, 31, 0.4);
  transform: translateY(-2px);
}

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn--outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-light);
  transform: translateY(-2px);
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.25rem 0;
  transition: all 0.4s var(--ease-out);
}

.nav--scrolled {
  background: rgba(23, 28, 33, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

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

.nav__logo-img {
  height: 36px;
  width: auto;
  transition: opacity 0.3s ease;
}

.nav__logo:hover .nav__logo-img {
  opacity: 0.8;
}

.nav__toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  transition: all 0.3s var(--ease-out);
  border-radius: 2px;
}

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

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

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

.nav__links {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  height: 100dvh;
  background: rgba(23, 28, 33, 0.98);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  list-style: none;
  transition: right 0.5s var(--ease-out);
}

.nav__links.active {
  right: 0;
}

.nav__links a {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--color-text);
  transition: color 0.3s ease;
}

.nav__links a:hover,
.nav__links a.active {
  color: var(--color-accent-light);
}

.nav__cta {
  padding: 0.625rem 1.5rem;
  border: 1px solid var(--color-accent);
  border-radius: 100px;
  color: var(--color-accent-light) !important;
}

/* --- Language Toggle --- */
.lang-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all 0.3s var(--ease-out);
  padding: 0;
  line-height: 1;
  flex-shrink: 0;
}

.lang-toggle:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-light);
  background: var(--color-accent-glow);
}

/* Nav actions wrapper (toggle + hamburger) */
.nav__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Mobile lang toggle in nav overlay */
.nav__links-lang {
  list-style: none;
  margin-top: 1rem;
}

.lang-toggle--mobile {
  width: 48px;
  height: 48px;
  font-size: 0.9rem;
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 6rem 1.25rem 4rem;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(236, 188, 31, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 50%, rgba(236, 188, 31, 0.04) 0%, transparent 50%),
    radial-gradient(ellipse 60% 50% at 20% 80%, rgba(236, 188, 31, 0.03) 0%, transparent 50%);
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black, transparent);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black, transparent);
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero__label {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent-light);
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.2s forwards;
}

.hero__logo-wrap {
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.4s forwards;
}

.hero__logo-img {
  max-width: 100%;
  width: auto;
  margin: 0 auto;
}

.hero__actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  justify-content: center;
  margin-top: 2.5rem;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.6s forwards;
}

.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 1.2s forwards;
}

.hero__scroll span {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-accent), transparent);
  animation: scrollLine 2s var(--ease-in-out) infinite;
}

/* --- Sections --- */
.section {
  padding: 5rem 0;
}

.section__header {
  margin-bottom: 3rem;
}

.section__label {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  display: block;
  margin-bottom: 0.75rem;
}

.section__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-white);
}

/* --- About --- */
.about {
  padding-top: 3rem;
}

.about__grid {
  display: grid;
  gap: 3rem;
}

.about__lead {
  font-size: 1.15rem;
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.about__text p {
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

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

.about__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.stat {
  text-align: center;
  padding: 1.5rem 1rem;
  background: var(--color-surface);
  border-radius: 16px;
  border: 1px solid var(--color-border);
}

.stat__number {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 700;
  color: var(--color-accent-light);
  display: inline;
}

.stat__plus {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  color: var(--color-accent-light);
}

.stat__label {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

/* --- Services --- */
.services {
  background: var(--color-bg-alt);
}

.services__grid {
  display: grid;
  gap: 1.25rem;
}

.service-card {
  padding: 2rem 1.5rem;
  background: var(--color-surface);
  border-radius: 20px;
  border: 1px solid var(--color-border);
  transition: all 0.4s var(--ease-out);
}

.service-card:hover {
  border-color: rgba(236, 188, 31, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.service-card__icon {
  width: 48px;
  height: 48px;
  margin-bottom: 1.25rem;
  color: var(--color-accent-light);
}

.service-card__icon svg {
  width: 100%;
  height: 100%;
}

.service-card__title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 0.75rem;
}

.service-card__text {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* --- Skills --- */
.skills__grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.skill-tag {
  padding: 0.625rem 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  transition: all 0.3s var(--ease-out);
  cursor: default;
}

.skill-tag:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-light);
  background: var(--color-accent-glow);
  transform: translateY(-2px);
}

/* --- Projects --- */
.projects {
  background: var(--color-bg-alt);
}

.projects__grid {
  display: grid;
  gap: 1.25rem;
}

.project-card {
  padding: 2rem 1.5rem;
  background: var(--color-surface);
  border-radius: 20px;
  border: 1px solid var(--color-border);
  transition: all 0.4s var(--ease-out);
}

.project-card:hover {
  border-color: rgba(236, 188, 31, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.project-card__header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.project-card__icon {
  width: 24px;
  height: 24px;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.project-card__title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-white);
}

.project-card__text {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.project-tag {
  padding: 0.375rem 0.875rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-accent-light);
}

.project-card__btn {
  font-size: 0.85rem;
  padding: 0.75rem 1.5rem;
}

/* --- Showreel --- */
.showreel {
  background: var(--color-bg-alt);
}

.showreel__wrap {
  max-width: 960px;
  margin: 0 auto;
}

.showreel__video {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: 20px;
  border: 1px solid var(--color-border);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.showreel__video iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.showreel__caption {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

/* --- Contact --- */
.contact__content {
  max-width: 600px;
}

.contact__lead {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-white);
  margin-bottom: 2rem;
}

.contact__details {
  display: grid;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.contact__item-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.375rem;
}

.contact__item a,
.contact__item address {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.6;
}

.contact__social {
  display: flex;
  gap: 1rem;
}

.contact__social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  transition: all 0.3s var(--ease-out);
}

.contact__social a:hover {
  color: var(--color-accent-light);
  border-color: var(--color-accent);
  background: var(--color-accent-glow);
  transform: translateY(-2px);
}

.contact__social svg {
  width: 20px;
  height: 20px;
}

/* --- Footer --- */
.footer {
  padding: 3rem 0 2rem;
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  text-align: center;
}

.footer__logo-img {
  height: 48px;
  width: auto;
  opacity: 0.6;
  transition: opacity 0.3s ease;
}

.footer__logo-img--large {
  height: 64px;
}

.footer__logo-img:hover {
  opacity: 1;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  width: 100%;
  max-width: 500px;
  text-align: center;
}

.footer__col-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.footer__col address,
.footer__col p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0;
}

.footer__col a {
  color: var(--color-text-muted);
}

.footer__col a:hover {
  color: var(--color-accent-light);
}

.footer__bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  width: 100%;
  text-align: center;
}

.footer__bottom p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.footer__legal {
  font-size: 0.75rem !important;
  margin-top: 0.25rem;
}

.footer__legal a {
  color: var(--color-text-muted);
}

.footer__legal a:hover {
  color: var(--color-accent-light);
}

/* --- Animations --- */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scrollLine {
  0% {
    transform: scaleY(0);
    transform-origin: top;
  }
  50% {
    transform: scaleY(1);
    transform-origin: top;
  }
  50.1% {
    transform-origin: bottom;
  }
  100% {
    transform: scaleY(0);
    transform-origin: bottom;
  }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   RESPONSIVE — Tablet (640px+)
   ======================================== */
@media (min-width: 640px) {
  .hero__actions {
    flex-direction: row;
  }

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

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

/* ========================================
   RESPONSIVE — Desktop (1024px+)
   ======================================== */
@media (min-width: 1024px) {
  .container {
    padding: 0 2rem;
  }

  .section {
    padding: 7rem 0;
  }

  /* Nav Desktop */
  .nav__toggle {
    display: none;
  }

  .nav__actions {
    order: 2;
  }

  .nav__links {
    position: static;
    width: auto;
    height: auto;
    background: none;
    backdrop-filter: none;
    flex-direction: row;
    gap: 2rem;
    order: 1;
  }

  .nav__links a {
    font-size: 0.9rem;
  }

  .nav__links-lang {
    display: none;
  }

  /* About */
  .about__grid {
    grid-template-columns: 1.5fr 1fr;
    align-items: start;
    gap: 4rem;
  }

  .about__stats {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .stat {
    padding: 2rem;
    text-align: left;
  }

  /* Services */
  .services__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Footer */
  .footer__grid {
    grid-template-columns: 1fr 1fr 1fr;
    text-align: left;
  }
}

/* ========================================
   RESPONSIVE — Wide Desktop (1280px+)
   ======================================== */
@media (min-width: 1280px) {
  .hero__logo-img {
    max-width: 100%;
  }

  .section {
    padding: 8rem 0;
  }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}