/* =========================================================
   Μιχαέλα Βάνα — Ψυχολόγος
   Θέμα: «Θάλασσα» (Calm Ocean)
   Mobile-first: small (default) → medium (≥640px) → large (≥1024px)
   ========================================================= */

:root {
  /* Χρώματα */
  --bg: #F3F7F8;
  --surface: #FFFFFF;
  --alt: #E1EDF0;
  --primary: #2F6F7E;
  --primary-dark: #1F5260;
  --accent: #9CC5C9;
  --text: #1E3440;
  --muted: #5B6F78;
  --on-primary: #FFFFFF;
  --border: rgba(30, 52, 64, 0.1);

  /* Γραμματοσειρές */
  --font-head: "Literata", Georgia, serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  /* Σχήματα */
  --btn-radius: 10px;
  --card-radius: 14px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 12px 32px -18px rgba(0, 0, 0, 0.18);

  /* Διαστάσεις */
  --header-h: 64px;
  --quick-bar-h: 64px;
  --section-pad: 56px;
}

/* ---------- Βάση ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  /* χώρος για τη μπάρα γρήγορης επικοινωνίας στα κινητά */
  padding-bottom: calc(var(--quick-bar-h) + env(safe-area-inset-bottom, 0px));
}

h1, h2, h3 {
  font-family: var(--font-head);
  font-weight: 600;
  line-height: 1.2;
  margin: 0 0 0.5em;
}

h2 { font-size: 1.75rem; }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }
a { color: var(--primary); }

.wrap {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

.icon svg,
.quick-bar svg {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---------- Κουμπιά ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border: 1.5px solid transparent;
  border-radius: var(--btn-radius);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.btn-primary { background: var(--primary); color: var(--on-primary); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 8px 20px -8px var(--primary); }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: var(--on-primary); }
.btn-sm { padding: 9px 18px; font-size: 0.875rem; }

/* ---------- Header / Πλοήγηση ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  position: relative;
}

.logo {
  font-family: var(--font-head);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  line-height: 1.15;
}
.logo small {
  display: block;
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* Κουμπί μενού (hamburger) */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: 0;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Μενού σε κινητά: αναδιπλούμενο */
.nav-links {
  display: none;
  position: absolute;
  top: var(--header-h);
  left: 0;
  right: 0;
  flex-direction: column;
  gap: 4px;
  margin: 0;
  padding: 12px 20px 20px;
  list-style: none;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 16px 24px -16px rgba(0, 0, 0, 0.2);
}
.nav-links.open { display: flex; }
.nav-links a:not(.btn) {
  display: block;
  padding: 12px 0;
  color: var(--text);
  font-weight: 500;
  text-decoration: none;
}
.nav-links a:not(.btn):hover { color: var(--primary); }
.nav-links .btn { width: 100%; margin-top: 8px; }

/* ---------- Hero ---------- */
.hero {
  padding: 64px 0;
  text-align: center;
  background:
    radial-gradient(circle at 15% 20%, rgba(156, 197, 201, 0.45) 0, transparent 40%),
    radial-gradient(circle at 85% 85%, var(--alt) 0, transparent 45%);
}
.eyebrow {
  display: inline-block;
  margin-bottom: 16px;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.eyebrow::before,
.eyebrow::after {
  content: "";
  display: inline-block;
  width: 24px;
  height: 2px;
  background: var(--accent);
  vertical-align: middle;
  margin: 0 10px;
}
.hero h1 { font-size: 2.5rem; }
.lead {
  max-width: 32em;
  margin: 0 auto;
  font-size: 1.1rem;
  color: var(--muted);
}
.actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- Ενότητες ---------- */
.section { padding: var(--section-pad) 0; }
.section.alt { background: var(--alt); }
.section-head { margin-bottom: 32px; }
.section-head p { color: var(--muted); }

/* Σχετικά */
.about-grid {
  display: grid;
  gap: 32px;
}
.edu {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.edu-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  background: var(--surface);
  border-radius: var(--card-radius);
  box-shadow: var(--shadow);
}
.edu-item small {
  display: block;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.edu-item strong {
  display: block;
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.3;
  margin: 2px 0;
}
.edu-item span:not(.icon) { color: var(--muted); font-size: 0.95rem; }

/* Εικονίδια σε κύκλο/πλαίσιο */
.icon {
  flex: none;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: var(--alt);
  color: var(--primary);
}
.icon svg { width: 24px; height: 24px; }

/* Κάρτες υπηρεσιών */
.cards {
  display: grid;
  gap: 16px;
}
.card {
  padding: 28px 24px;
  background: var(--surface);
  border-radius: var(--card-radius);
  box-shadow: var(--shadow);
}
.card .icon { margin-bottom: 18px; }
.card p { margin: 0; color: var(--muted); }

/* Επικοινωνία */
.contact-list {
  display: grid;
  gap: 12px;
}
.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 18px;
  background: var(--surface);
  border: 1.5px solid transparent;
  border-radius: var(--card-radius);
  box-shadow: var(--shadow);
  color: var(--text);
  text-decoration: none;
  transition: border-color 0.2s, transform 0.2s;
}
.contact-item:hover { border-color: var(--primary); transform: translateY(-2px); }
.contact-item .icon { border-radius: 50%; }
.contact-item .text { min-width: 0; }
.contact-item small { display: block; color: var(--muted); font-size: 0.8rem; }
.contact-item strong {
  display: block;
  font-weight: 600;
  overflow-wrap: anywhere;
}

/* ---------- Footer ---------- */
.site-footer {
  padding: 28px 0;
  background: var(--text);
  color: rgba(243, 247, 248, 0.8);
  font-size: 0.9rem;
}
.site-footer .wrap {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  text-align: center;
}
.site-footer a { color: var(--bg); }

/* ---------- Μπάρα γρήγορης επικοινωνίας (κινητά) ---------- */
.quick-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  height: calc(var(--quick-bar-h) + env(safe-area-inset-bottom, 0px));
  padding-bottom: env(safe-area-inset-bottom, 0px);
  background: var(--surface);
  border-top: 1px solid var(--border);
  box-shadow: 0 -8px 24px -16px rgba(0, 0, 0, 0.25);
}
.quick-bar a {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 600;
  text-decoration: none;
}
.quick-bar a:active { background: var(--alt); }
.quick-bar svg { width: 22px; height: 22px; }

/* ---------- 404 / προσωρινές σελίδες ---------- */
.placeholder {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 2rem;
  text-align: center;
}

/* =========================================================
   MEDIUM (≥ 640px): tablet
   ========================================================= */
@media (min-width: 640px) {
  :root {
    --header-h: 72px;
    --section-pad: 72px;
  }
  body { font-size: 17px; padding-bottom: 0; }
  .wrap { padding: 0 32px; }
  h2 { font-size: 2.1rem; }

  .quick-bar { display: none; }

  /* Μενού σε μία γραμμή */
  .nav-toggle { display: none; }
  .nav-links,
  .nav-links.open {
    display: flex;
    position: static;
    flex-direction: row;
    align-items: center;
    gap: 24px;
    padding: 0;
    background: none;
    border: 0;
    box-shadow: none;
  }
  .nav-links a:not(.btn) { padding: 0; font-size: 0.95rem; }
  .nav-links .btn { width: auto; margin: 0; }

  .hero { padding: 88px 0; }
  .hero h1 { font-size: 3.4rem; }
  .lead { font-size: 1.2rem; }
  .actions { flex-direction: row; justify-content: center; }

  .edu { grid-template-columns: 1fr 1fr; }
  .cards { grid-template-columns: 1fr 1fr; gap: 20px; }
  .contact-list { grid-template-columns: 1fr 1fr; gap: 16px; }

  .site-footer .wrap { flex-direction: row; justify-content: space-between; }
}

/* =========================================================
   LARGE (≥ 1024px): desktop
   ========================================================= */
@media (min-width: 1024px) {
  :root { --section-pad: 96px; }
  h2 { font-size: 2.5rem; }

  .nav-links { gap: 32px; }

  .hero { padding: 120px 0; }
  .hero h1 { font-size: 4.4rem; }

  .about-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 64px;
    align-items: center;
  }
  .edu { grid-template-columns: 1fr; }

  .cards { grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .card { padding: 32px; transition: transform 0.2s; }
  .card:hover { transform: translateY(-4px); }

  .contact-list { grid-template-columns: repeat(4, 1fr); }
  .contact-item {
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
  }
}