/* ============================================================
   SHARED BASE — accueil, pages & sites-web
   ============================================================ */

:root {
  /* Colors */
  --color-bg:           #ffffff;
  --color-bg-alt:       #f7f7f7;
  --color-surface:      #ffffff;
  --color-text:         #000000;
  --color-text-muted:   #333333;
  --color-accent:       #15FF00;
  --color-accent-hover: #12e000;
  --color-accent-light: rgba(21, 255, 0, 0.15);
  --color-border:       #000000;

  /* Typography */
  --font-family:        'Inter', system-ui, -apple-system, sans-serif;
  --font-size-base:     1rem;
  --font-size-sm:       0.875rem;
  --font-size-lg:       1.125rem;
  --font-size-xl:       1.25rem;
  --font-size-2xl:      1.5rem;
  --font-size-3xl:      2rem;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-bold:   700;
  --line-height:        1.6;

  /* Spacing */
  --space-xs:   0.5rem;
  --space-sm:   1rem;
  --space-md:   1.5rem;
  --space-lg:   2.5rem;
  --space-xl:   4rem;
  --space-2xl:  6rem;

  /* Layout */
  --container-max:  72rem;
  --header-height:  4rem;
  --radius-sm:      0.5rem;
  --radius-md:      0.75rem;
  --radius-lg:      1rem;
  --radius-pill:    999px;
  --transition:     0.2s ease;
}

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

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

ul { list-style: none; }

button {
  font-family: inherit;
  cursor: pointer;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

/* ============================================================
   BUTTONS
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-pill);
  border: 2px solid transparent;
  cursor: pointer;
  text-align: center;
  transition: background var(--transition), color var(--transition),
              border-color var(--transition), opacity var(--transition);
}

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

.btn--primary:hover {
  background: var(--color-accent-hover);
  opacity: 0.9;
}

.btn--dark {
  background: var(--color-text);
  color: #ffffff;
}

.btn--dark:hover {
  background: #333333;
}

.btn--lg {
  padding: 1rem 2rem;
  font-size: var(--font-size-base);
}

.btn--full {
  width: 100%;
}

/* ============================================================
   HEADER / NAV
   ============================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  height: var(--header-height);
}

.nav {
  display: flex;
  align-items: center;
  height: 100%;
  gap: var(--space-md);
}

.nav__logo {
  flex-shrink: 0;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.04em;
  transition: opacity var(--transition);
}

.nav__logo:hover {
  opacity: 0.7;
}

.nav__logo-link {
  flex-shrink: 0;
  line-height: 0;
  transition: opacity var(--transition);
}

.nav__logo-link:hover {
  opacity: 0.7;
}

.nav__logo-img {
  height: 2rem;
  width: auto;
  object-fit: contain;
  display: block;
}

.nav__links {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.25rem;
  margin-left: auto;
}

.nav__links a {
  font-size: 0.75rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: color var(--transition);
}

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

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: var(--space-xs);
}

.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--transition), opacity var(--transition);
}

/* ============================================================
   FOOTER
   ============================================================ */

.site-footer {
  padding: var(--space-md) 0;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

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

@media (max-width: 640px) {
  .nav__links {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-end;
    background: var(--color-surface);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    padding: var(--space-sm) var(--space-md);
    gap: var(--space-sm);
    margin-left: 0;
  }

  .nav__links.is-open {
    display: flex;
  }

  .nav__links a {
    padding: var(--space-xs) 0;
    font-size: var(--font-size-sm);
  }

  .nav__toggle {
    display: flex;
    margin-left: auto;
  }
}

@media (min-width: 641px) {
  .nav__links {
    flex-direction: row;
    align-items: center;
    gap: var(--space-md);
  }

  .nav__links a {
    font-size: 0.7rem;
  }
}

/* ============================================================
   MAIN SITE NAV (homepage + sites web)
   ============================================================ */

:root {
  --nav-main-size: clamp(1rem, 1.45vw, 1.5625rem);
}

.site-header--main {
  height: auto;
  min-height: var(--header-height);
  border-bottom: none;
}

.nav--main {
  max-width: none;
  padding: 0.5625rem clamp(1rem, 1.16vw, 1.25rem);
  height: auto;
}

.nav__links--main {
  gap: clamp(0.75rem, 2vw, 2rem);
}

.nav__links--main a {
  font-size: var(--nav-main-size);
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
}

.nav__tab {
  display: inline-flex;
  align-items: center;
  padding: 0.35em 0.75em;
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-pill);
  color: var(--color-text);
  transition: background var(--transition), color var(--transition);
}

.nav__tab:hover,
.nav__tab--active {
  background: var(--color-accent);
  color: var(--color-text);
}

@media (max-width: 640px) {
  .nav__links--main a {
    font-size: var(--font-size-base);
  }
}

/* ============================================================
   SOCIAL ICONS (noquadri.ch)
   ============================================================ */

.social-icons {
  display: flex;
  flex-shrink: 0;
  gap: 2px;
}

.social-icons a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  background: #d0cdcd;
  color: #fff;
  font-size: 16px;
  line-height: 1;
  transition: background 0.3s ease-in-out;
}

.social-icons a:hover {
  background: #00c3f4;
  color: #fff;
}