/* ============================================
   ΟΜΙΛΟΣ ΓΙΑ ΤΗΝ UNESCO ΚΝΩΣΟΣ
   Βασικό stylesheet
   ============================================ */

:root {
  --primary: #1B237E;
  --primary-dark: #26215C;
  --primary-light: #EEEDFE;
  --primary-mid: #534AB7;
  --accent: #185FA5;
  --accent-light: #E6F1FB;
  --green: #0F6E56;
  --green-light: #E1F5EE;
  --amber: #BA7517;
  --amber-light: #FAEEDA;
  --text: #2C2C2A;
  --text-secondary: #5F5E5A;
  --text-tertiary: #888780;
  --bg: #FFFFFF;
  --bg-secondary: #F8F8FA;
  --bg-tertiary: #F4F3FA;
  --border: rgba(0, 0, 0, 0.1);
  --border-strong: rgba(0, 0, 0, 0.2);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(27, 35, 126, 0.04);
  --shadow-md: 0 4px 12px rgba(27, 35, 126, 0.08);
  --shadow-lg: 0 12px 32px rgba(27, 35, 126, 0.12);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans Greek', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Cormorant Garamond', 'Noto Serif Greek', Georgia, serif;
  font-weight: 600;
  line-height: 1.2;
  color: var(--primary-dark);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.7rem); }
h4 { font-size: 1.15rem; }

p { margin-bottom: 1rem; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent); }

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

/* CONTAINER */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-narrow {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* HEADER */
.site-header {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.5rem;
  max-width: 1280px;
  margin: 0 auto;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--primary-dark);
}

.logo-circle {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
  border: 2px solid var(--primary-light);
}

.logo-circle img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 3px;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 600;
  font-size: 1.2rem;
  color: var(--primary-dark);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.logo-subtitle {
  font-size: 0.78rem;
  color: var(--text-secondary);
  letter-spacing: 0.3px;
  font-style: italic;
}

/* NAV */
.main-nav {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  flex-wrap: nowrap;
}

.main-nav a {
  padding: 0.45rem 0.65rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  font-weight: 500;
  white-space: nowrap;
}

.main-nav a:hover, .main-nav a.active {
  background: var(--primary-light);
  color: var(--primary);
}

.main-nav a.cta {
  background: var(--primary);
  color: white;
  padding: 0.5rem 0.9rem;
  margin-left: 0.25rem;
}

.main-nav a.cta:hover {
  background: var(--primary-dark);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.5rem;
  color: var(--primary);
}

/* HERO */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  padding: 5rem 1.5rem 4rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 20% 30%, rgba(255,255,255,0.08) 0%, transparent 50%),
                    radial-gradient(circle at 80% 70%, rgba(255,255,255,0.06) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  font-size: 0.8rem;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: #CECBF6;
  margin-bottom: 1rem;
  display: inline-block;
}

.hero h1 {
  color: white;
  margin-bottom: 1.25rem;
  font-weight: 500;
  letter-spacing: -0.02em;
}

.hero-lead {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: #CECBF6;
  margin-bottom: 2rem;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 0.85rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* PAGE HEADER (interior pages) */
.page-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  padding: 3.5rem 1.5rem 3rem;
  text-align: center;
}

.page-header h1 {
  color: white;
  margin-bottom: 0.5rem;
}

.page-header .eyebrow {
  font-size: 0.75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #CECBF6;
  margin-bottom: 0.75rem;
  display: inline-block;
}

.page-header .lead {
  font-size: 1.05rem;
  color: #CECBF6;
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.6;
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}

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

.btn-primary:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.15);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.btn-solid {
  background: var(--primary);
  color: white;
}

.btn-solid:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: white;
}

/* SECTIONS */
.section {
  padding: 4rem 1.5rem;
}

.section-tight {
  padding: 2.5rem 1.5rem;
}

.section-bg {
  background: var(--bg-secondary);
}

.section-eyebrow {
  font-size: 0.75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--primary);
  font-weight: 600;
  display: block;
  margin-bottom: 0.5rem;
}

.section-title {
  margin-bottom: 1rem;
}

.section-intro {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 720px;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.section-header-center {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header-center .section-intro {
  margin-left: auto;
  margin-right: auto;
}

/* STATS GRID */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}

.stat {
  background: var(--bg-tertiary);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  text-align: center;
  transition: transform var(--transition);
}

.stat:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.stat-number {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* CARDS */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.card {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: all var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}

.card-action {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--primary);
  padding: 1.5rem;
  transition: all var(--transition);
}

.card-action:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card-action.accent { border-left-color: var(--accent); }
.card-action.green { border-left-color: var(--green); }

.card-date {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.card-action.accent .card-date { color: var(--accent); }
.card-action.green .card-date { color: var(--green); }

.card h3, .card-action h3 {
  margin-bottom: 0.5rem;
  font-size: 1.25rem;
}

.card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* PILLAR CARDS */
.pillar {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 2rem;
  border-top: 4px solid var(--primary);
  transition: all var(--transition);
  height: 100%;
}

.pillar:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.pillar.accent { border-top-color: var(--accent); }
.pillar.green { border-top-color: var(--green); }

.pillar-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.pillar.accent .pillar-icon {
  background: var(--accent-light);
  color: var(--accent);
}

.pillar.green .pillar-icon {
  background: var(--green-light);
  color: var(--green);
}

.pillar h3 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
  color: var(--primary);
}

.pillar.accent h3 { color: var(--accent); }
.pillar.green h3 { color: var(--green); }

.pillar-source {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.25rem 0.75rem;
  background: var(--bg-tertiary);
  border-radius: 100px;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* FOOTER */
.site-footer {
  background: var(--primary-dark);
  color: white;
  padding: 3rem 1.5rem 1.5rem;
  margin-top: 4rem;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-col h4 {
  color: white;
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.15rem;
  margin-bottom: 1rem;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 0.5rem;
}

.footer-col a {
  color: #CECBF6;
  font-size: 0.9rem;
}

.footer-col a:hover {
  color: white;
}

.footer-col p {
  color: #CECBF6;
  font-size: 0.9rem;
}

.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: #CECBF6;
}

/* RESPONSIVE */
@media (max-width: 980px) {
  .menu-toggle { display: block; }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    gap: 0.25rem;
    box-shadow: var(--shadow-md);
  }
  .main-nav.open { display: flex; }
  .main-nav a {
    width: 100%;
    padding: 0.7rem 1rem;
    font-size: 0.95rem;
  }
  .main-nav a.cta {
    margin-left: 0;
    margin-top: 0.5rem;
    text-align: center;
    justify-content: center;
  }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 768px) {
  .logo-circle {
    width: 56px;
    height: 56px;
  }
  .logo-title {
    font-size: 1rem;
  }
  .logo-subtitle {
    font-size: 0.7rem;
  }
}