/* ============================================================
   shared.css — Common styles for all Tallberga pages
   ============================================================ */

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

:root {
  /* Brand palette — KLM-inspired blue */
  --black:        #1565C0;
  --dark:         #1976D2;
  --dark-2:       #2196F3;
  --dark-card:    #1976D2;
  --white-100:    rgba(240, 242, 255, 1);
  --white-90:     rgba(240, 242, 255, .9);
  --white-70:     rgba(240, 242, 255, .7);
  --white-50:     rgba(240, 242, 255, .5);
  --white-35:     rgba(240, 242, 255, .35);
  --white-15:     rgba(240, 242, 255, .15);
  --white-10:     rgba(240, 242, 255, .1);
  --white-06:     rgba(240, 242, 255, .06);

  /* Light sections */
  --off-white:    #f0f4fb;
  --text:         rgb(10, 20, 60);
  --text-mid:     rgb(40, 60, 120);
  --muted:        rgb(90, 110, 160);
  --border-light: rgb(200, 215, 240);

  /* Accent */
  --accent:       #29B8F0;
  --accent-dark:  #0055CC;
  --accent-glow:  rgba(41, 184, 240, 0.25);

  /* Gold, green */
  --gold:         #B1A93E;
  --gold-bright:  #FCFF41;
  --green:        #00c875;

  /* Border radius */
  --radius:       0px;
  --radius-sm:    2px;
  --radius-card:  4px;

  /* Easing */
  --ease:         cubic-bezier(0.19, 1, 0.22, 1);
  --ease-fast:    cubic-bezier(0.4, 0, 0.2, 1);
  --transition:   0.5s var(--ease);
  --transition-fast: 0.2s var(--ease-fast);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', Arial, Verdana, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: #fff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Typography ── */
h1 {
  font-size: clamp(3rem, 7vw, 6.5rem);
  font-weight: 900;
  line-height: 0.92;
  letter-spacing: -0.03em;
}
h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.025em;
}
h3 {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
}
p  { color: var(--muted); line-height: 1.7; }
a  { color: inherit; text-decoration: none; }

/* ── Layout ── */
.container {
  max-width: 1700px;
  margin: 0 auto;
  padding: 0 3rem;
}
@media (max-width: 768px) { .container { padding: 0 1.5rem; } }

section { padding: 8rem 0; }
@media (max-width: 768px) { section { padding: 5rem 0; } }
@media (max-width: 540px) { section { padding: 4rem 0; } }

/* ── Labels ── */
.label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.4rem;
}
.label-light  { color: var(--white-35); }
.label-accent { color: var(--accent); }
.label-faint  { color: rgba(240, 240, 250, .3); }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-height: 52px;
  padding: 0 2.2rem;
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
  position: relative;
}
.btn-sm {
  min-height: 40px;
  padding: 0 1.4rem;
  font-size: 0.75rem;
}

/* SpaceX style: white border, transparent → hover white fill */
.btn-outline-white {
  background: rgba(0, 18, 53, .4);
  color: var(--white-90);
  border-color: var(--white-100);
}
.btn-outline-white:hover {
  background: var(--white-100);
  color: var(--black);
}

/* Ghost: dimmer version for secondary CTAs on dark backgrounds */
.btn-outline-ghost {
  background: transparent;
  color: var(--white-70);
  border-color: var(--white-35);
}
.btn-outline-ghost:hover {
  background: var(--white-10);
  color: var(--white-100);
  border-color: var(--white-70);
}

/* Solid accent */
.btn-accent {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-accent:hover { background: #1d4ed8; border-color: #1d4ed8; }

/* Ghost on light bg */
.btn-outline-dark {
  background: transparent;
  color: var(--text);
  border-color: var(--text);
}
.btn-outline-dark:hover { background: var(--text); color: #fff; }

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  padding: 1.5rem 0;
  background: linear-gradient(180deg, rgba(0, 18, 53, .7) 0%, rgba(0, 18, 53, 0) 100%);
  transition: background var(--transition-fast), padding var(--transition-fast);
}
.nav.scrolled {
  padding: 1rem 0;
  background: rgba(0, 24, 69, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}
/* Sticky solid variant used on inner pages */
.nav--sticky {
  position: sticky;
  top: 0;
  padding: 1.1rem 0;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--white-10);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  column-gap: 2.5rem;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--white-100);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  flex-shrink: 0;
}
.nav-logo img { height: 3rem; width: auto; }
.nav-links {
  display: flex;
  align-items: center;
  column-gap: 2.5rem;
  list-style: none;
}
.nav-links a {
  font-size: 0.813rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--white-70);
  transition: color var(--transition-fast);
}
.nav-links a:hover,
.nav-links a.active { color: var(--white-100); }

@media (max-width: 960px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; align-items: center; }
  .nav-cta { display: none; }
}

/* ── Mobile hamburger ── */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  flex-shrink: 0;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white-70);
  border-radius: 2px;
  transition: background var(--transition-fast);
}
.nav-hamburger:hover span { background: var(--white-100); }

/* ── Mobile nav overlay ── */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(4, 6, 10, 0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  display: flex;
  flex-direction: column;
  padding: 0 1.5rem 2.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease, transform 0.22s ease;
  transform: translateY(-8px);
}
.mobile-nav.open {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}
.mobile-nav-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--white-06);
  flex-shrink: 0;
}
.mobile-nav-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--white-35);
  padding: 0.4rem;
  line-height: 1;
  transition: color var(--transition-fast);
}
.mobile-nav-close:hover { color: var(--white-100); }
.mobile-nav-links {
  list-style: none;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0;
}
.mobile-nav-links li { border-bottom: 1px solid var(--white-06); }
.mobile-nav-links li:first-child { border-top: 1px solid var(--white-06); }
.mobile-nav-links a {
  display: block;
  padding: 1.05rem 0;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--white-50);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}
.mobile-nav-links a:hover { color: var(--white-100); padding-left: 0.4rem; }
.mobile-nav-bottom {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  padding-top: 1.8rem;
  border-top: 1px solid var(--white-06);
  flex-shrink: 0;
}
.mobile-nav-cta { width: 100%; justify-content: center; }

/* ── Footer ── */
footer {
  background: var(--black);
  border-top: 1px solid var(--white-10);
  padding: 2.5rem 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white-35);
}
.footer-logo img { height: 2rem; opacity: 0.4; }
.footer-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.footer-links a {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--white-35);
  transition: color var(--transition-fast);
}
.footer-links a:hover { color: var(--white-70); }
.footer-copy { font-size: 0.78rem; color: var(--white-35); letter-spacing: 0.04em; }
.footer-legal-link { color: var(--white-35); text-decoration: none; margin-right: 1.25rem; }
.footer-legal-link:hover { color: var(--white-70); }
.eu-flag-inline { vertical-align: middle; border-radius: 2px; margin-right: 0.3em; }

@media (max-width: 640px) { .footer-links { display: none; } }
@media (max-width: 540px) { .footer-inner { flex-direction: column; align-items: flex-start; gap: 1rem; } }

/* ── Skip navigation ── */
.skip-nav {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 99999;
  padding: 0.75rem 1.25rem;
  background: var(--accent);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 0 0 4px 4px;
  transition: top 0.15s;
}
.skip-nav:focus { top: 0; }

/* ── Focus visible — keyboard navigation indicator ── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 0;
}

/* ── Form helpers ── */
.form-error {
  color: #ffaaaa;
  font-size: 0.85rem;
  margin-top: 0.25rem;
  display: none;
}
.fs-success-msg {
  padding: 1.5rem;
  background: rgba(0, 161, 222, 0.15);
  border: 1px solid var(--accent);
  border-radius: 0.75rem;
  color: #fff;
  margin-bottom: 1rem;
}
.fs-error-msg {
  padding: 1rem;
  background: rgba(200, 50, 50, 0.15);
  border: 1px solid #c83232;
  border-radius: 0.75rem;
  color: #ffaaaa;
  margin-bottom: 1rem;
}