/* ==========================================================================
   AICONS AG — aicons.ch
   Single stylesheet, no framework. Mobile-first.
   ========================================================================== */

/* --- Reset & base ------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Open Sans', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  font-weight: 400;
  line-height: 1.6;
  color: #1a1a1a;
  background: #fff;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

/* --- Tokens ------------------------------------------------------------- */
:root {
  --c-bg: #ffffff;
  --c-bg-dark: #1a1a1a;
  --c-bg-darker: #0f0f0f;
  --c-text: #1a1a1a;
  --c-text-light: #6b6b6b;
  --c-text-inv: #ffffff;
  --c-accent: #4a90c2;        /* the aicons blue from the wordmark */
  --c-accent-hover: #3a7aa8;
  --c-border: #e5e5e5;
  --c-divider: #4a90c2;

  --f-serif-display: 'Roboto', Georgia, serif;
  --f-sans: 'Open Sans', system-ui, sans-serif;

  --container: 1200px;
  --pad-x: clamp(1rem, 4vw, 2.5rem);
  --section-y: clamp(3rem, 8vw, 6rem);

  --radius: 4px;
  --transition: 200ms ease;
}

/* --- Layout helpers ----------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}
.section { padding-top: var(--section-y); padding-bottom: var(--section-y); }
.section--dark { background: var(--c-bg-dark); color: var(--c-text-inv); }
.section--darker { background: var(--c-bg-darker); color: var(--c-text-inv); }
.divider {
  height: 1px;
  background: var(--c-divider);
  border: 0;
  margin: 0;
}

/* --- Typography --------------------------------------------------------- */
h1, h2, h3, h4 {
  font-family: var(--f-serif-display);
  font-weight: 300;
  letter-spacing: 0.08em;
  line-height: 1.2;
  margin: 0 0 0.6em;
}
h1 { font-size: clamp(1.5rem, 4vw, 2rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); }
h3 { font-size: clamp(1.1rem, 2.2vw, 1.35rem); font-weight: 400; }
p { margin: 0 0 1rem; }
.eyebrow {
  font-family: var(--f-sans);
  font-size: 0.875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-text-light);
  margin-bottom: 1rem;
}
.section--dark .eyebrow,
.section--darker .eyebrow { color: #d8d8d8; }
.section--dark p,
.section--darker p { color: #f0f0f0; }
.section--dark .about__lead,
.section--darker .about__lead { color: #f0f0f0 !important; }

.text-center { text-align: center; }
.uppercase { text-transform: uppercase; letter-spacing: 0.15em; }

/* --- Navigation --------------------------------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--c-border);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 64px;
}
.nav__brand {
  display: inline-block;
  font-family: var(--f-serif-display);
  font-weight: 300;
  font-size: 1.5rem;
  letter-spacing: 0.4em;
  color: var(--c-accent);
  margin: 0;
  padding-left: 0.4em;
  line-height: 1;
}
.nav__menu {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.5vw, 2.5rem);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav__link {
  font-family: var(--f-sans);
  font-size: 0.95rem;
  color: var(--c-text);
  padding: 0.5rem 0;
  position: relative;
  transition: color var(--transition);
}
.nav__link:hover,
.nav__link[aria-current="page"] { color: var(--c-accent); }
.nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--c-accent);
}
.nav__lang {
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--c-text-light);
  border-left: 1px solid var(--c-border);
  padding-left: clamp(0.75rem, 1.5vw, 1.25rem);
}
.nav__lang a { padding: 0 0.25rem; }
.nav__lang a[aria-current="true"] { color: var(--c-accent); font-weight: 600; }

.nav__toggle {
  display: none;
  background: none;
  border: 0;
  padding: 0.5rem;
  color: var(--c-text);
}
.nav__toggle svg { width: 24px; height: 24px; }

@media (max-width: 768px) {
  .nav__toggle { display: block; }
  .nav__menu {
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem var(--pad-x);
    gap: 0;
    border-bottom: 1px solid var(--c-border);
    transform: translateY(-110%);
    transition: transform var(--transition);
    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
  }
  .nav__menu.is-open { transform: translateY(0); }
  .nav__menu li { border-bottom: 1px solid var(--c-border); }
  .nav__menu li:last-child { border-bottom: 0; }
  .nav__link { display: block; padding: 0.85rem 0; }
  .nav__lang { border-left: 0; padding-left: 0; padding-top: 0.5rem; }
  .nav__login { margin-left: 0; align-self: flex-start; }
}

/* --- Login button & modal ---------------------------------------------- */
.nav__login {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-left: clamp(0.5rem, 1vw, 1rem);
  padding: 0.45rem 1rem;
  background: var(--c-accent);
  color: #fff;
  border: 1px solid var(--c-accent);
  border-radius: var(--radius);
  font-family: var(--f-sans);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  transition: background var(--transition), border-color var(--transition);
}
.nav__login:hover,
.nav__login:focus-visible { background: var(--c-accent-hover); border-color: var(--c-accent-hover); }
.nav__login svg { width: 16px; height: 16px; }

.login-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(15, 15, 15, 0.55);
  backdrop-filter: blur(4px);
}
.login-modal.is-open { display: flex; }
.login-modal__card {
  background: #fff;
  border-radius: 8px;
  width: 100%;
  max-width: 420px;
  padding: 2rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
  position: relative;
}
.login-modal__close {
  position: absolute;
  top: 0.75rem; right: 0.75rem;
  background: none;
  border: 0;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--c-text-light);
  padding: 0.25rem 0.5rem;
}
.login-modal__close:hover { color: var(--c-text); }
.login-modal__title {
  font-family: var(--f-serif-display);
  font-weight: 300;
  letter-spacing: 0.08em;
  font-size: 1.4rem;
  margin: 0 0 0.25rem;
}
.login-modal__subtitle {
  font-size: 0.9rem;
  color: var(--c-text-light);
  margin: 0 0 1.25rem;
}
.login-form label {
  display: block;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--c-text-light);
  margin-bottom: 0.35rem;
}
.login-form input {
  width: 100%;
  padding: 0.65rem 0.75rem;
  font-family: var(--f-sans);
  font-size: 0.95rem;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  background: #fafafa;
}
.login-form input:focus {
  outline: none;
  border-color: var(--c-accent);
  background: #fff;
}
.login-form__submit {
  width: 100%;
  padding: 0.7rem 1rem;
  background: var(--c-accent);
  color: #fff;
  border: 0;
  border-radius: var(--radius);
  font-family: var(--f-sans);
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  transition: background var(--transition);
}
.login-form__submit:hover { background: var(--c-accent-hover); }
.login-form__error {
  color: #b00020;
  font-size: 0.85rem;
  margin: 0 0 0.75rem;
  min-height: 1.1em;
}

/* --- Hero --------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: clamp(420px, 60vh, 620px);
  background: #2a3a55 url('../images/hero-bg.jpg') center / cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(20,30,50,0.35), rgba(20,30,50,0.55));
}
.hero__content {
  position: relative;
  z-index: 1;
  padding: 0 var(--pad-x);
  max-width: 900px;
  animation: heroFadeUp 1.4s ease-out both;
}
.hero__title {
  font-family: var(--f-serif-display);
  font-weight: 300;
  font-size: clamp(1.5rem, 5vw, 3rem);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.92);
  text-shadow: 0 2px 12px rgba(0,0,0,0.4);
  margin: 0 0 1rem;
}
.hero__subtitle {
  font-family: var(--f-sans);
  font-weight: 300;
  font-size: clamp(0.85rem, 1.8vw, 1.05rem);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.82);
  text-shadow: 0 1px 8px rgba(0,0,0,0.4);
  margin: 0;
}
@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  .hero__content { animation: none; }
}

/* --- Services grid ------------------------------------------------------ */
.services { background: var(--c-bg-darker); color: var(--c-text-inv); }
.services__head { text-align: center; margin-bottom: 3rem; }
.services__title {
  font-family: var(--f-serif-display);
  font-weight: 300;
  letter-spacing: 0.2em;
  font-size: clamp(1.5rem, 3vw, 2rem);
  text-transform: uppercase;
}
.services__subtitle {
  font-family: var(--f-sans);
  font-size: 0.9rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #b8b8b8;
}
.services__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 768px) {
  .services__grid { grid-template-columns: 1fr 1fr; gap: 3rem; }
}
.service-card {
  display: flex;
  flex-direction: column;
  background: transparent;
  color: var(--c-text-inv);
}
.service-card__img {
  aspect-ratio: 3 / 2;
  background: #2a2a2a;
  object-fit: cover;
  width: 100%;
}
.service-card__body { padding: 1.5rem 0; text-align: center; }
.service-card__title {
  font-family: var(--f-serif-display);
  font-weight: 300;
  letter-spacing: 0.15em;
  font-size: 1.1rem;
  text-transform: uppercase;
  margin: 0 0 0.75rem;
}
.service-card__text {
  font-size: 0.95rem;
  color: #e8e8e8;
  max-width: 36ch;
  margin: 0 auto 1.25rem;
}
.btn {
  display: inline-block;
  font-family: var(--f-sans);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  padding: 0.85rem 1.5rem;
  border: 1px solid var(--c-accent);
  color: var(--c-text-inv);
  background: transparent;
  border-radius: var(--radius);
  transition: background var(--transition), color var(--transition);
}
.btn:hover { background: var(--c-accent); color: #fff; }
.btn--solid { background: var(--c-accent); }
.btn--solid:hover { background: var(--c-accent-hover); }

/* --- About / generic content section ----------------------------------- */
.about { text-align: center; }
.about__lead {
  max-width: 60ch;
  margin: 0 auto;
  font-size: 1.05rem;
  color: var(--c-text);
}

/* --- Subpage content blocks -------------------------------------------- */
.page-hero {
  background: #0f1a2c;
  color: #fff;
  text-align: center;
  padding: clamp(4rem, 10vw, 7rem) 0 clamp(3rem, 8vw, 5rem);
}
.page-hero h1 {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.page-hero p {
  max-width: 60ch;
  margin: 0 auto;
  font-size: clamp(0.95rem, 1.6vw, 1.1rem);
  color: rgba(255,255,255,0.8);
  letter-spacing: 0.05em;
}

.cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 768px) { .cards-grid { grid-template-columns: repeat(3, 1fr); } }
.info-card {
  background: #fff;
  border: 1px solid var(--c-border);
  padding: 2rem;
  border-radius: var(--radius);
}
.info-card h3 {
  color: var(--c-accent);
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 1rem;
  margin-bottom: 1rem;
}
.info-card ul { margin: 0; padding-left: 1.1rem; }
.info-card li { margin-bottom: 0.4rem; color: var(--c-text); }

.bullet-list {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 0.75rem;
  max-width: 60ch;
  margin: 0 auto;
}
.bullet-list li {
  padding-left: 1.5rem;
  position: relative;
  color: var(--c-text);
}
.section--dark .bullet-list li,
.section--darker .bullet-list li { color: #f0f0f0; }
.bullet-list li::before {
  content: "→";
  color: var(--c-accent);
  position: absolute;
  left: 0;
  font-weight: 600;
}

/* --- Contact form ------------------------------------------------------- */
.form {
  display: grid;
  gap: 1rem;
  max-width: 560px;
  margin: 0 auto;
}
.form label {
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-light);
}
.form input,
.form textarea {
  width: 100%;
  font: inherit;
  padding: 0.85rem 1rem;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  background: #fff;
  color: var(--c-text);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form input:focus,
.form textarea:focus {
  outline: 0;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(74, 144, 194, 0.15);
}
.form textarea { min-height: 140px; resize: vertical; }
.form__honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.form__submit { justify-self: start; }

/* --- Footer ------------------------------------------------------------- */
.footer {
  background: var(--c-bg-dark);
  color: #d0d0d0;
  padding: 3rem 0 2rem;
  font-size: 0.9rem;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}
@media (min-width: 768px) {
  .footer__grid { grid-template-columns: 2fr 1fr 1fr; }
}
.footer h4 {
  font-family: var(--f-sans);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 1rem;
}
.footer p, .footer address { margin: 0 0 0.4rem; font-style: normal; line-height: 1.6; }
.footer__social { display: flex; gap: 0.75rem; align-items: center; }
.footer__social a {
  display: inline-flex;
  width: 32px; height: 32px;
  align-items: center; justify-content: center;
  border: 1px solid #444;
  border-radius: var(--radius);
  transition: border-color var(--transition), background var(--transition);
}
.footer__social a:hover { border-color: var(--c-accent); background: rgba(74,144,194,0.1); }
.footer__social svg { width: 16px; height: 16px; fill: #d0d0d0; }
.footer__bottom {
  border-top: 1px solid #333;
  padding-top: 1.5rem;
  font-size: 0.8rem;
  color: #888;
  text-align: center;
}

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