/* ─── Vibe Tower – Design tokens ─────────────────────────────────────────── */
/* Layout: full-bleed sections, 1100px content column, mobile-first           */
:root {
  --bg:        #EDF8FB;
  --fg:        #0C2330;
  --fg-muted:  #3C6878;
  --surface:   #FFFFFF;
  --surface-2: #D5EDF5;
  --accent:    #2592AB;
  --accent-hi: #30AACC;
  --border:    rgba(37,146,171,0.18);
  --radius-card: 20px;
  --font-display: 'Fredoka', 'Geologica', system-ui, sans-serif;
  --font-body:    'Nunito',  system-ui, sans-serif;
  color-scheme: light;
}

/* Fredoka has no Cyrillic — use Nunito for all text in Ukrainian */
html[lang="uk"] { --font-display: 'Nunito', system-ui, sans-serif; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg:        #091520;
    --fg:        #D6EEF5;
    --fg-muted:  #568899;
    --surface:   #0F2030;
    --surface-2: #152C3A;
    --accent:    #2592AB;
    --accent-hi: #3DBDD8;
    --border:    rgba(37,146,171,0.22);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg:        #091520;
  --fg:        #D6EEF5;
  --fg-muted:  #568899;
  --surface:   #0F2030;
  --surface-2: #152C3A;
  --accent:    #2592AB;
  --accent-hi: #3DBDD8;
  --border:    rgba(37,146,171,0.22);
  color-scheme: dark;
}

/* ─── Reset ──────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
img { max-width: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
}

/* ─── Nav ────────────────────────────────────────────────────────────────── */
body::before {
  content: "";
  position: fixed;
  inset: 0 0 auto;
  height: env(safe-area-inset-top, 0px);
  background: var(--bg);
  z-index: 200;
}

.site-nav {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding-top: 0.7rem;
  padding-bottom: 0.7rem;
  padding-left:  max(16px, env(safe-area-inset-left,  0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  flex-wrap: wrap;
}

.nav-links {
  display: flex;
  gap: 1.2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--fg-muted);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--accent); }

.theme-btn, .lang-btn {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.3rem 0.7rem;
  cursor: pointer;
  color: var(--fg-muted);
  font-size: 0.82rem;
  font-family: var(--font-body);
  transition: background 0.2s;
  white-space: nowrap;
}
.theme-btn:hover, .lang-btn:hover { background: var(--border); }

/* ─── Page wrapper for sub-pages ─────────────────────────────────────────── */
.page-content {
  max-width: 740px;
  margin: 0 auto;
  padding-top: 3.5rem;
  padding-bottom: 5rem;
  padding-left:  max(16px, env(safe-area-inset-left,  0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}

.page-content h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.8rem);
  font-weight: 700;
  color: var(--fg);
  margin: 0 0 0.35rem;
  text-wrap: balance;
}

.page-date {
  color: var(--fg-muted);
  font-size: 0.85rem;
  margin: 0 0 2.5rem;
}

.page-content h2 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--fg);
  margin: 2.5rem 0 0.5rem;
  text-wrap: balance;
}

.page-content p, .page-content li {
  color: var(--fg-muted);
  font-size: 0.96rem;
  line-height: 1.7;
}

.page-content ul {
  padding-left: 1.4rem;
  margin: 0.4rem 0 1rem;
}

.page-content a { color: var(--accent); }

.contact-block {
  margin-top: 2.5rem;
  background: var(--surface-2);
  border-radius: var(--radius-card);
  padding: 1.5rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.contact-block strong { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent); }
.contact-block span { font-size: 1rem; font-weight: 600; user-select: all; cursor: text; }

/* ─── Footer ─────────────────────────────────────────────────────────────── */
.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding-top: 1.75rem;
  padding-bottom: 1.75rem;
  padding-left:  max(16px, env(safe-area-inset-left,  0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
}

.footer-links {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--fg-muted);
  text-decoration: none;
  font-size: 0.84rem;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--accent); }

.footer-copy {
  color: var(--fg-muted);
  font-size: 0.84rem;
}

/* ─── Support form ───────────────────────────────────────────────────────── */
.support-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.5rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-field label {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.form-field input,
.form-field textarea,
.form-field select {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 0.65rem 0.9rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--fg);
  outline: none;
  transition: border-color 0.2s;
}

.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus { border-color: var(--accent); }

.form-field textarea { resize: vertical; min-height: 120px; }

.form-submit {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 12px;
  padding: 0.8rem 2rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  align-self: flex-start;
  transition: background 0.2s, transform 0.15s;
}
.form-submit:hover { background: var(--accent-hi); transform: translateY(-1px); }

.form-success {
  background: var(--surface-2);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  color: var(--accent);
  font-weight: 600;
  text-align: center;
}

/* ─── Contact section (home page) ───────────────────────────────────────── */
.contact-section { background: var(--surface); }

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.contact-copy .section-lead { margin-bottom: 1rem; }

.contact-more {
  display: inline-block;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
}
.contact-more:hover { text-decoration: underline; }

@media (max-width: 700px) {
  .contact-inner { grid-template-columns: 1fr; gap: 1.5rem; }
}

/* ─── Hamburger + mobile menu ─────────────────────────────────────────────── */
.burger {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  font-size: 1.25rem;
  line-height: 1;
  padding: 0.28rem 0.55rem;
  color: var(--fg-muted);
  transition: background 0.2s;
  flex-shrink: 0;
}
.burger:hover { background: var(--surface-2); }

.mobile-menu {
  display: none;
  position: fixed;
  inset: 0 0 auto;
  padding-top: max(env(safe-area-inset-top, 0px), 16px);
  padding-bottom: 1.25rem;
  padding-left:  max(20px, env(safe-area-inset-left,  0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 8px 32px rgba(0,0,0,0.14);
  z-index: 101;
  flex-direction: column;
  gap: 0;
}
.mobile-menu.open { display: flex; }

.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.75rem;
}
.mobile-menu-header .nav-logo {
  color: var(--accent) !important;
  font-size: 1.5rem;
  text-shadow: none !important;
}

.mobile-menu .mobile-nav-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}
.mobile-menu .mobile-nav-links a {
  display: block;
  padding: 0.8rem 0;
  color: var(--fg);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  transition: color 0.2s;
}
.mobile-menu .mobile-nav-links a:hover { color: var(--accent); }


.mobile-menu-actions {
  display: flex;
  gap: 0.5rem;
  padding-top: 0.9rem;
}
.mobile-menu-actions .lang-btn,
.mobile-menu-actions .theme-btn {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 700;
}

/* ─── Mobile layout ──────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  /* Nav: hide text links, show burger */
  .nav-links { display: none; }
  .site-nav .lang-btn, .site-nav .theme-btn { display: none; }
  .burger { display: inline-flex; align-items: center; justify-content: center; }
  .nav-right { gap: 0.5rem; }
  .nav-logo { font-size: 1.45rem; }

  /* Sections: tighter vertical rhythm */
  section { padding-top: 3rem; padding-bottom: 3rem; }

  /* Sub-pages */
  .page-content { padding-top: 2rem; padding-bottom: 3rem; }
  .page-content h1 { font-size: clamp(1.6rem, 7vw, 2.2rem); }

  /* Support / contact forms: full-width submit button */
  .form-submit { width: 100%; text-align: center; }
}

/* ─── Phone mockup placeholders ─────────────────────────────────────────── */