/* ===== FONT (self-hosted, GDPR-compliant) ===== */
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/inter-400.woff2") format("woff2");
}

@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../fonts/inter-500.woff2") format("woff2");
}

@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../fonts/inter-600.woff2") format("woff2");
}

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

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

:root {
  --color-primary: #1a2b4a;
  --color-primary-light: #2c4470;
  --color-accent: #3b82f6;
  --color-accent-hover: #2563eb;
  --color-bg: #ffffff;
  --color-bg-dark: #f1f5f9;
  --color-bg-footer: #0f172a;
  --color-text: #334155;
  --color-text-light: #64748b;
  --color-text-heading: #0f172a;
  --color-text-white: #f8fafc;
  --color-border: #e2e8f0;
  --font-main: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, sans-serif;
  --font-mono: "SF Mono", "Fira Code", monospace;
  --max-width: 1120px;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 4px 20px rgba(0, 0, 0, 0.1);
  --transition: 0.2s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
}

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

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

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

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

/* ===== HEADER / NAV ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav__logo {
  text-decoration: none;
}

.nav__logo-img {
  height: 32px;
  width: auto;
}

.nav__logo {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.15rem;
}

.nav__tagline {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--color-text-light);
  font-weight: 600;
  line-height: 1;
  margin-top: 0.15rem;
}

@media (max-width: 480px) {
  .nav__tagline {
    display: none;
  }
}

.logo-text {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.5px;
}

.nav__list {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav__link {
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
}

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

.nav__link--action {
  background: var(--color-accent);
  color: #fff;
  padding: 0.5rem 1.2rem;
  border-radius: var(--radius);
}

.nav__link--action:hover {
  background: var(--color-accent-hover);
  color: #fff;
}

.nav__lang {
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.5px;
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  color: var(--color-text-light);
}

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

.nav__toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text-heading);
}

/* ===== HERO ===== */
.hero {
  padding: 10rem 0 6rem;
  text-align: center;
  background: var(--color-primary);
}

.hero__kicker {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 1px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 1rem;
  font-family: var(--font-mono);
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--color-text-white);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.hero__subtitle {
  font-size: 1.25rem;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 1rem;
}

.hero__description {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 640px;
  margin: 0 auto 2rem;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 0.85rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius);
  text-decoration: none;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn--outline {
  background: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}

.btn--outline:hover {
  background: var(--color-accent);
  color: #fff;
}

.hero .btn--outline {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
}

.hero .btn--outline:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: #fff;
  color: #fff;
}

/* ===== SECTIONS ===== */
.section {
  padding: 5rem 0;
}

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

.section--action {
  background: var(--color-primary);
  text-align: center;
}

.section--action .section__title,
.section--action .section__lead {
  color: var(--color-text-white);
}

/* Title checkbox (inline) */
.section--action .section__title .title-checkbox {
  display: inline-block;
  vertical-align: middle;
}

.section--action .section__title .title-checkbox svg {
  width: 24px;
  height: 24px;
  vertical-align: middle;
  margin: 0 0.45rem;
  display: inline-block;
}

.section__title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--color-text-heading);
  margin-bottom: 0.75rem;
  text-align: center;
}

.section__lead {
  font-size: 1.1rem;
  color: var(--color-text-light);
  text-align: center;
  max-width: 600px;
  margin: 0 auto 3rem;
}

.section__conclusion {
  text-align: center;
  margin-top: 2rem;
  font-weight: 600;
  color: var(--color-text-heading);
}

.section__note {
  text-align: center;
  margin-top: 2.5rem;
  font-size: 0.9rem;
  color: var(--color-text-light);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== PILOT NOTE ===== */
.pilot-note {
  max-width: 760px;
  margin: 3rem auto 0;
  padding: 1.75rem 2rem;
  border: 1px solid rgba(59, 130, 246, 0.35);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius);
  background: rgba(59, 130, 246, 0.08);
  text-align: center;
}

.pilot-note__badge {
  display: inline-block;
  margin-bottom: 0.75rem;
  padding: 0.3rem 0.85rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: rgba(59, 130, 246, 0.15);
  border-radius: 999px;
}

.pilot-note__text {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text-light);
}

/* ===== GRID ===== */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

/* ===== CARDS ===== */
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  transition:
    transform var(--transition),
    box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card--highlight {
  border-top: 3px solid var(--color-accent);
}

.card__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text-heading);
  margin-bottom: 0.75rem;
}

.card__list {
  margin-top: 1rem;
  padding-left: 1.2rem;
}

.card__list li {
  margin-bottom: 0.4rem;
  color: var(--color-text);
}

/* ===== APPROACH ===== */
.approach-item {
  text-align: center;
  padding: 1.5rem 1rem;
}

.approach-item__number {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--color-accent);
  margin-bottom: 0.75rem;
  background: rgba(59, 130, 246, 0.1);
  padding: 0.3rem 0.7rem;
  border-radius: 4px;
}

.approach-item h4 {
  font-size: 1rem;
  color: var(--color-text-heading);
  margin-bottom: 0.4rem;
}

.approach-item p {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* ===== PROCESS STEPS ===== */
.process-step {
  text-align: center;
  padding: 1.5rem 1rem;
  position: relative;
}

.process-step__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  margin-bottom: 1rem;
  font-size: 1.25rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: #ffffff;
  background: var(--color-accent);
  border-radius: 50%;
}

.process-step h4 {
  font-size: 1.05rem;
  color: var(--color-text-heading);
  margin-bottom: 0.5rem;
}

.process-step p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ===== FAQ ===== */
.faq {
  max-width: 760px;
  margin: 0 auto;
}

.faq__item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  margin-bottom: 0.85rem;
  overflow: hidden;
}

.faq__question {
  cursor: pointer;
  padding: 1.1rem 1.4rem;
  font-weight: 600;
  color: var(--color-text-heading);
  list-style: none;
  position: relative;
  padding-right: 3rem;
}

.faq__question::-webkit-details-marker {
  display: none;
}

.faq__question::after {
  content: "+";
  position: absolute;
  right: 1.4rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--color-accent);
  transition: transform 0.2s ease;
}

.faq__item[open] .faq__question::after {
  content: "\2212";
}

.faq__answer {
  padding: 0 1.4rem 1.2rem;
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text-light);
}

.card--audience {
  text-align: center;
}

.card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin: 0 auto 1rem;
  color: var(--color-accent);
  background: rgba(59, 130, 246, 0.08);
  border-radius: 12px;
}

.card__icon--warning {
  color: #be3a5a;
  background: rgba(190, 58, 90, 0.08);
}

.card__example {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--color-text-light);
  font-style: italic;
}

.card__meta {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
}

/* ===== STANDARDS TAGS ===== */
.standards {
  margin-top: 3rem;
  text-align: center;
}

.standards__label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 1rem;
}

.standards__tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
}

.tag {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--color-accent);
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 20px;
}

a.tag--link {
  text-decoration: none;
  transition: all var(--transition);
}

a.tag--link:hover {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

/* ===== CREDENTIALS ===== */
.about__tagline {
  font-style: italic;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 1.25rem;
}

.about__credentials {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
  justify-content: center;
}

.credential {
  display: inline-block;
  padding: 0.3rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-heading);
  background: var(--color-bg-dark);
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

/* ===== BUTTON VARIANTS ===== */
.btn--white {
  background: #fff;
  color: var(--color-accent);
}

.btn--white:hover {
  background: #f1f5f9;
  color: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

/* ===== ABOUT ===== */
.about__content {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
}

.about__photo {
  margin-bottom: 1.5rem;
}

.about__img {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto;
  border: 3px solid var(--color-border);
  box-shadow: var(--shadow);
}

.about__name {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text-heading);
}

.about__role {
  font-size: 1rem;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.about__text p {
  margin-bottom: 1rem;
}

.about__linkedin {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.95rem;
  transition: color var(--transition);
}

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

.about__linkedin svg {
  flex-shrink: 0;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--color-bg-footer);
  padding: 3rem 0 2rem;
  color: var(--color-text-white);
}

.footer__content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
}

.footer__brand p {
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.footer__logo-img {
  height: 28px;
  width: auto;
  filter: brightness(0) invert(1);
}

.footer__brand .logo-text {
  color: var(--color-text-white);
}

.footer__links {
  display: flex;
  gap: 1.5rem;
}

.footer__links a {
  color: var(--color-text-light);
  font-size: 0.9rem;
}

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

.footer__copy {
  width: 100%;
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 1rem;
}

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

/* ===== CONTACT FORM ===== */
.form {
  max-width: 600px;
  margin: 0 auto;
}

.form__group {
  margin-bottom: 1.5rem;
}

.form__label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-heading);
  margin-bottom: 0.4rem;
}

.form__input,
.form__textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  font-size: 1rem;
  font-family: var(--font-main);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--transition);
}

.form__input:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form__textarea {
  min-height: 150px;
  resize: vertical;
}

/* ===== LEGAL PAGES ===== */
.legal {
  padding: 8rem 0 4rem;
}

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

.legal h2 {
  font-size: 1.3rem;
  color: var(--color-text-heading);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.legal p,
.legal li {
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

.legal ul {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

/* ===== RESPONSIVE ===== */

/* ----- LARGE DESKTOP / FULL HD (1200px+) ----- */
@media (min-width: 1200px) {
  :root {
    --max-width: 1200px;
  }

  .hero {
    padding: 12rem 0 7rem;
  }

  .hero__title {
    font-size: 3.2rem;
  }

  .hero__subtitle {
    font-size: 1.4rem;
  }

  .hero__description {
    font-size: 1.15rem;
    max-width: 700px;
  }

  .section {
    padding: 6rem 0;
  }

  .section__title {
    font-size: 2.4rem;
    margin-bottom: 1rem;
  }

  .section__lead {
    font-size: 1.15rem;
    max-width: 650px;
  }

  .grid {
    gap: 2rem;
  }

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

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

  .card {
    padding: 2.5rem;
  }

  .card__title {
    font-size: 1.25rem;
  }

  .about__content {
    display: flex;
    max-width: 900px;
    text-align: left;
    gap: 3rem;
    align-items: center;
  }

  .about__photo {
    flex-shrink: 0;
    margin-bottom: 0;
  }

  .about__img {
    width: 200px;
    height: 200px;
  }

  .about__name {
    font-size: 1.5rem;
  }

  .about__role {
    font-size: 1.1rem;
  }

  .about__credentials {
    justify-content: flex-start;
  }

  .footer__content {
    align-items: center;
  }

  .btn {
    padding: 1rem 2.5rem;
    font-size: 1.05rem;
  }
}

/* ----- EXTRA LARGE / 2K+ (1600px+) ----- */
@media (min-width: 1600px) {
  :root {
    --max-width: 1320px;
  }

  body {
    font-size: 1.05rem;
  }

  .hero {
    padding: 14rem 0 8rem;
  }

  .hero__title {
    font-size: 3.6rem;
  }

  .section {
    padding: 7rem 0;
  }
}

/* ----- TABLET (769px – 1024px) ----- */
@media (max-width: 1024px) and (min-width: 769px) {
  .hero {
    padding: 9rem 0 5rem;
  }

  .hero__title {
    font-size: 2.2rem;
  }

  .section {
    padding: 4rem 0;
  }

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

  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .nav__list {
    gap: 1.2rem;
  }

  .nav__link {
    font-size: 0.85rem;
  }

  .about__content {
    max-width: 580px;
  }

  .about__img {
    width: 140px;
    height: 140px;
  }
}

/* ----- MOBILE (max 768px) ----- */
@media (max-width: 768px) {
  .nav__list {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    flex-direction: column;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 1.5rem;
    gap: 0.5rem;
    box-shadow: var(--shadow-lg);
  }

  .nav__list.active {
    display: flex;
  }

  .nav__list li {
    width: 100%;
    text-align: center;
  }

  .nav__link {
    display: block;
    padding: 0.6rem 0;
    font-size: 1rem;
  }

  .nav__link--action {
    display: inline-block;
    margin-top: 0.5rem;
  }

  .nav__lang {
    display: inline-block;
    margin-top: 0.25rem;
  }

  .nav__toggle {
    display: block;
  }

  .hero {
    padding: 7.5rem 0 3.5rem;
  }

  .hero__title {
    font-size: 1.7rem;
    line-height: 1.3;
  }

  .hero__title br {
    display: none;
  }

  .hero__subtitle {
    font-size: 1.05rem;
  }

  .hero__description {
    font-size: 0.95rem;
  }

  .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
  }

  .section {
    padding: 3rem 0;
  }

  .section__title {
    font-size: 1.4rem;
  }

  .section__lead {
    font-size: 1rem;
    margin-bottom: 2rem;
  }

  .grid--2,
  .grid--3 {
    grid-template-columns: 1fr;
  }

  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .card {
    padding: 1.5rem;
  }

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

  .about__content {
    max-width: 100%;
  }

  .about__img {
    width: 130px;
    height: 130px;
  }

  .about__name {
    font-size: 1.15rem;
  }

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

  .footer__links {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
  }

  .legal {
    padding: 6rem 0 3rem;
  }

  .legal h1 {
    font-size: 1.5rem;
  }

  .form__input,
  .form__textarea {
    font-size: 16px; /* prevents iOS zoom on focus */
  }
}

/* ----- SMALL MOBILE (max 480px) ----- */
@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  .hero {
    padding: 7rem 0 3rem;
  }

  .hero__title {
    font-size: 1.45rem;
  }

  .hero__subtitle {
    font-size: 0.95rem;
  }

  .section {
    padding: 2.5rem 0;
  }

  .section__title {
    font-size: 1.25rem;
  }

  .grid--4 {
    grid-template-columns: 1fr;
  }

  .card {
    padding: 1.25rem;
  }

  .card__title {
    font-size: 1.05rem;
  }

  .about__img {
    width: 110px;
    height: 110px;
  }

  .footer {
    padding: 2rem 0 1.5rem;
  }

  .section--action {
    padding: 2.5rem 0;
  }

  .legal {
    padding: 5.5rem 0 2rem;
  }

  .legal h1 {
    font-size: 1.3rem;
  }

  .legal h2 {
    font-size: 1.1rem;
  }
}