/* Leavvo — public marketing landing page.
   Static & dependency-free, served from /public/landing/ via clean-URL rewrite
   (base url `/`). Bypasses the React app & Keycloak entirely.
   Monochrome (black & white) theme, matching the app icon. Light + dark via
   prefers-color-scheme. */

:root {
  /* Tokens ευθυγραμμισμένα με το dashboard (shadcn "New York", ουδέτερο) —
     βλ. src/app/globals.css. Ίδια oklch γκρι (chroma 0) & radius. */
  --brand: oklch(0.205 0 0);       /* primary mark */
  --brand-dark: oklch(0.145 0 0);  /* headings/links accent + hover */
  --brand-darker: oklch(0.145 0 0);
  --on-brand: oklch(0.985 0 0);    /* foreground ON a brand-filled surface */
  --text: oklch(0.145 0 0);
  --muted: oklch(0.556 0 0);
  --border: oklch(0.922 0 0);
  --bg: oklch(1 0 0);
  --bg-alt: oklch(0.97 0 0);
  --soft: oklch(0.97 0 0);         /* neutral accent surface */
  --soft-border: oklch(0.922 0 0);
  --card: oklch(1 0 0);
  --shadow: 0 10px 30px oklch(0.145 0 0 / 0.07);
  --max: 1120px;
  --radius: 0.625rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --brand: oklch(0.922 0 0);       /* primary mark */
    --brand-dark: oklch(0.985 0 0);
    --brand-darker: oklch(0.985 0 0);
    --on-brand: oklch(0.205 0 0);
    --text: oklch(0.985 0 0);
    --muted: oklch(0.708 0 0);
    --border: oklch(1 0 0 / 10%);
    --bg: oklch(0.145 0 0);
    --bg-alt: oklch(0.205 0 0);
    --soft: oklch(0.269 0 0);
    --soft-border: oklch(1 0 0 / 10%);
    --card: oklch(0.205 0 0);
    --shadow: 0 10px 30px oklch(0 0 0 / 0.45);
  }
}

/* Manual theme toggle — data-theme overrides prefers-color-scheme (και στις δύο
   κατευθύνσεις), ώστε ο χρήστης να αλλάζει χειροκίνητα light/dark. */
:root[data-theme="dark"] {
  --brand: oklch(0.922 0 0); --brand-dark: oklch(0.985 0 0); --brand-darker: oklch(0.985 0 0); --on-brand: oklch(0.205 0 0);
  --text: oklch(0.985 0 0); --muted: oklch(0.708 0 0); --border: oklch(1 0 0 / 10%); --bg: oklch(0.145 0 0); --bg-alt: oklch(0.205 0 0);
  --soft: oklch(0.269 0 0); --soft-border: oklch(1 0 0 / 10%); --card: oklch(0.205 0 0); --shadow: 0 10px 30px oklch(0 0 0 / 0.45);
}
:root[data-theme="light"] {
  --brand: oklch(0.205 0 0); --brand-dark: oklch(0.145 0 0); --brand-darker: oklch(0.145 0 0); --on-brand: oklch(0.985 0 0);
  --text: oklch(0.145 0 0); --muted: oklch(0.556 0 0); --border: oklch(0.922 0 0); --bg: oklch(1 0 0); --bg-alt: oklch(0.97 0 0);
  --soft: oklch(0.97 0 0); --soft-border: oklch(0.922 0 0); --card: oklch(1 0 0); --shadow: 0 10px 30px oklch(0.145 0 0 / 0.07);
}
:root[data-theme="dark"] .brand-icon-light { display: none; }
:root[data-theme="dark"] .brand-icon-dark { display: inline-block; }
:root[data-theme="light"] .brand-icon-light { display: inline-block; }
:root[data-theme="light"] .brand-icon-dark { display: none; }

/* Theme toggle button */
.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 10px;
  border: 1px solid var(--border); background: transparent;
  color: var(--text); cursor: pointer; padding: 0;
  transition: border-color .15s, color .15s;
}
.theme-toggle:hover { border-color: var(--brand); color: var(--brand-dark); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .i-sun { display: none; }
@media (prefers-color-scheme: dark) {
  .theme-toggle .i-moon { display: none; }
  .theme-toggle .i-sun { display: inline; }
}
:root[data-theme="dark"] .theme-toggle .i-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .i-sun { display: inline; }
:root[data-theme="light"] .theme-toggle .i-moon { display: inline; }
:root[data-theme="light"] .theme-toggle .i-sun { display: none; }

/* Footer icon stays white under manual theme too (always-dark footer). */
:root[data-theme="light"] .site-footer .brand-icon-light,
:root[data-theme="dark"] .site-footer .brand-icon-light { display: none; }
:root[data-theme="light"] .site-footer .brand-icon-dark,
:root[data-theme="dark"] .site-footer .brand-icon-dark { display: inline-block; }

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  font-size: 16px;
}

a { color: var(--brand-dark); text-decoration: none; }
a:hover { color: var(--muted); }

.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 20px;
}
.wrap-narrow { max-width: 780px; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.98rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s, transform .15s, opacity .15s;
}
.btn:hover { transform: translateY(-1px); }
.btn-lg { padding: 14px 26px; font-size: 1.02rem; }
.btn-primary { background: var(--brand); color: var(--on-brand); }
.btn-primary:hover { opacity: .88; color: var(--on-brand); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand-dark); }
/* On the (always-dark) CTA band */
.btn-white { background: oklch(0.985 0 0); color: oklch(0.205 0 0); }
.btn-white:hover { background: oklch(0.922 0 0); color: oklch(0.145 0 0); }
.btn-outline-white { background: transparent; color: #fff; border-color: rgba(255,255,255,.5); }
.btn-outline-white:hover { border-color: #fff; background: rgba(255,255,255,.12); color: #fff; }

/* Auth-aware CTAs. Default = logged-out (auth-out ορατά, auth-in κρυφά). Όταν
   το React app έχει σημάνει σύνδεση, το head script βάζει .is-authed στο <html>
   → δείχνουμε «Πίνακας ελέγχου» αντί για Login/Register. */
.auth-in { display: none !important; }
html.is-authed .auth-out { display: none !important; }
html.is-authed .auth-in { display: inline-flex !important; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 20px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text);
}
.brand-icon { width: 26px; height: 26px; object-fit: contain; display: inline-block; }
.brand-icon-dark { display: none; }
@media (prefers-color-scheme: dark) {
  .brand-icon-light { display: none; }
  .brand-icon-dark { display: inline-block; }
}
.site-nav { display: none; gap: 26px; }
.site-nav a { color: var(--muted); font-weight: 500; font-size: 0.95rem; }
.site-nav a:hover { color: var(--text); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.nav-actions .btn { padding: 9px 16px; }
.nav-actions .login-link { display: none; }

/* Hero */
.hero {
  background:
    radial-gradient(60% 60% at 80% 0%, color-mix(in srgb, var(--text) 8%, transparent) 0%, transparent 60%),
    linear-gradient(180deg, var(--bg-alt) 0%, var(--bg) 65%);
  padding: 56px 0 48px;
  border-bottom: 1px solid var(--border);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}
.badge {
  display: inline-block;
  background: var(--soft);
  color: var(--text);
  border: 1px solid var(--soft-border);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: 2.15rem;
  line-height: 1.15;
  margin: 0 0 16px;
  max-width: 640px;
  letter-spacing: -0.02em;
}
.hero p.sub {
  font-size: 1.12rem;
  color: var(--muted);
  max-width: 560px;
  margin: 0 0 28px;
}
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }
.cta-center { justify-content: center; }
.hero-note { margin: 16px 0 0; font-size: 0.86rem; color: var(--muted); }

/* Hero mockup */
.hero-visual { display: flex; justify-content: center; }
.mock {
  width: 100%;
  max-width: 420px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.mock-top {
  display: flex; align-items: center; gap: 6px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-alt);
}
.mock-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--border); }
.mock-title { margin-left: 10px; font-size: 0.8rem; color: var(--muted); font-weight: 600; }
.mock-body { padding: 18px; display: flex; flex-direction: column; gap: 12px; }
.mock-stat {
  display: flex; flex-direction: column; gap: 2px;
  padding: 14px 16px;
  border-radius: 12px;
  background: var(--soft);
  border: 1px solid var(--soft-border);
}
.mock-stat-label { font-size: 0.8rem; color: var(--text); font-weight: 600; }
.mock-stat-value { font-size: 1.9rem; font-weight: 800; color: var(--text); line-height: 1; }
.mock-row {
  display: flex; align-items: center; gap: 10px;
  font-size: 0.86rem; color: var(--text);
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
}
.pill {
  font-size: 0.72rem; font-weight: 700;
  padding: 3px 9px; border-radius: 999px;
}
.pill-green { background: var(--brand); color: var(--on-brand); }
.pill-amber { background: transparent; color: var(--muted); border: 1px solid var(--border); }
.mock-bars {
  display: flex; align-items: flex-end; gap: 8px;
  height: 70px; padding-top: 6px;
}
.mock-bars span {
  flex: 1;
  background: linear-gradient(180deg, var(--text), var(--muted));
  border-radius: 6px 6px 0 0;
  opacity: .55;
}

/* Highlights */
.highlights { padding: 26px 0; border-bottom: 1px solid var(--border); background: var(--bg-alt); }
.highlights-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  text-align: center;
}
.hl { display: flex; flex-direction: column; gap: 2px; }
.hl strong { font-size: 1.35rem; color: var(--text); letter-spacing: -0.01em; }
.hl span { font-size: 0.88rem; color: var(--muted); }

/* Sections */
section[id] { scroll-margin-top: 80px; } /* offset για το sticky header στα anchor links */
section.block { padding: 64px 0; }
section.block.alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 44px; }
.section-head h2 { font-size: 1.7rem; margin: 0 0 10px; letter-spacing: -0.01em; }
.section-head p { color: var(--muted); margin: 0; }

/* Feature grid */
.grid { display: grid; grid-template-columns: 1fr; gap: 18px; }
.feature {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform .15s, box-shadow .15s, border-color .15s;
}
.feature:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--muted); }
.feature .icon {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border-radius: 12px;
  background: var(--soft);
  color: var(--text);
  margin-bottom: 16px;
}
.feature .icon svg { width: 22px; height: 22px; }
.feature h3 { margin: 0 0 6px; font-size: 1.08rem; }
.feature p { margin: 0; color: var(--muted); font-size: 0.96rem; }

/* AI section */
.ai-grid { display: grid; grid-template-columns: 1fr; gap: 40px; align-items: center; }
.ai-copy h2 { font-size: 1.7rem; margin: 0 0 12px; letter-spacing: -0.01em; }
.ai-copy > p { color: var(--muted); margin: 0 0 20px; }
.ticks { list-style: none; padding: 0; margin: 0 0 18px; display: flex; flex-direction: column; gap: 12px; }
.ticks li {
  position: relative;
  padding: 12px 14px 12px 44px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  font-size: 0.95rem;
}
.ticks li::before {
  content: "";
  position: absolute; left: 14px; top: 50%; transform: translateY(-50%);
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--soft);
  border: 1px solid var(--soft-border);
}
.ticks li::after {
  content: "";
  position: absolute; left: 20px; top: calc(50% - 3px);
  width: 8px; height: 4px;
  border-left: 2px solid var(--text);
  border-bottom: 2px solid var(--text);
  transform: rotate(-45deg);
}
.muted-note { font-size: 0.88rem; color: var(--muted); margin: 0; }

/* Chat mockup */
.chat {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  display: flex; flex-direction: column; gap: 12px;
}
.chat-msg {
  max-width: 85%;
  padding: 11px 15px;
  border-radius: 14px;
  font-size: 0.92rem;
  line-height: 1.45;
}
.chat-msg.user {
  align-self: flex-end;
  background: var(--brand);
  color: var(--on-brand);
  border-bottom-right-radius: 4px;
}
.chat-msg.bot {
  align-self: flex-start;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--text);
  border-bottom-left-radius: 4px;
}

/* Steps */
.steps { display: grid; grid-template-columns: 1fr; gap: 18px; }
.step {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
}
.step .num {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: var(--brand);
  color: var(--on-brand);
  font-weight: 700;
  display: grid; place-items: center;
  margin-bottom: 16px;
}
.step h3 { margin: 0 0 6px; font-size: 1.05rem; }
.step p { margin: 0; color: var(--muted); font-size: 0.96rem; }

/* Comparison */
.compare { display: grid; grid-template-columns: 1fr; gap: 18px; }
.compare-col {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  background: var(--card);
}
.compare-col h3 { margin: 0 0 16px; font-size: 1.1rem; }
.compare-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 12px; }
.compare-col li { position: relative; padding-left: 30px; color: var(--muted); font-size: 0.95rem; }
.compare-col.old li::before {
  content: "✕"; position: absolute; left: 0; top: 0;
  color: var(--muted); font-weight: 700;
}
.compare-col.new { border-color: var(--text); }
.compare-col.new li { color: var(--text); }
.compare-col.new li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  color: var(--text); font-weight: 700;
}

/* FAQ */
.faq { display: flex; flex-direction: column; gap: 12px; }
.faq details {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card);
  padding: 4px 18px;
}
.faq summary {
  cursor: pointer;
  font-weight: 600;
  padding: 14px 0;
  list-style: none;
  position: relative;
  padding-right: 28px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute; right: 0; top: 12px;
  font-size: 1.3rem; color: var(--muted); font-weight: 400;
}
.faq details[open] summary::after { content: "−"; }
.faq details p { margin: 0 0 16px; color: var(--muted); font-size: 0.96rem; }

/* Final CTA — always-dark band (matches monochrome theme) */
.cta-band {
  background: linear-gradient(135deg, oklch(0.205 0 0), oklch(0.145 0 0));
  color: oklch(0.985 0 0);
  text-align: center;
  padding: 64px 0;
}
.cta-band h2 { font-size: 1.8rem; margin: 0 0 12px; }
.cta-band p { color: oklch(0.708 0 0); margin: 0 auto 26px; max-width: 540px; }

/* Footer */
.site-footer { background: oklch(0.205 0 0); color: oklch(0.708 0 0); padding: 44px 0 36px; }
.site-footer .cols {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  justify-content: space-between;
  margin-bottom: 26px;
}
.site-footer .foot-brand p { margin: 10px 0 0; color: oklch(0.556 0 0); font-size: 0.9rem; max-width: 260px; }
.site-footer .brand { color: oklch(0.985 0 0); }
/* Footer is always dark → always show the white icon. */
.site-footer .brand-icon-light { display: none; }
.site-footer .brand-icon-dark { display: inline-block; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 16px; align-content: flex-start; max-width: 420px; }
.site-footer nav a { color: oklch(0.708 0 0); font-weight: 500; font-size: 0.92rem; }
.site-footer nav a:hover { color: oklch(0.985 0 0); }
.site-footer .meta {
  border-top: 1px solid oklch(1 0 0 / 10%);
  padding-top: 18px;
  font-size: 0.88rem;
  color: oklch(0.556 0 0);
}
.site-footer .meta a { color: oklch(0.556 0 0); }
.site-footer .meta a:hover { color: oklch(0.985 0 0); }

/* Responsive */
@media (min-width: 640px) {
  .nav-actions .login-link { display: inline-flex; }
  .hero h1 { font-size: 3rem; }
  .grid { grid-template-columns: repeat(3, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .compare { grid-template-columns: repeat(2, 1fr); }
  .highlights-grid { grid-template-columns: repeat(4, 1fr); }
  .section-head h2 { font-size: 1.95rem; }
}

@media (min-width: 960px) {
  .site-nav { display: flex; }
  .hero { padding: 88px 0 76px; }
  .hero-grid { grid-template-columns: 1.05fr 0.95fr; }
  .ai-grid { grid-template-columns: 1fr 1fr; }
}