/*
Theme Name: ECSIST Child Theme
Theme URI: https://ecsist.gr
Description: Child theme for ECSIST Research Group website based on Astra
Author: ECSIST Research Group - INVIS/ATHENA
Author URI: https://ecsist.gr
Template: astra
Version: 1.0.0
License: GNU General Public License v2 or later
Text Domain: ecsist-child
*/

/* ============================================================
   ECSIST Research Group — Custom Styles (Astra Child Theme)
   Color Palette:
     Primary Blue:    #1a3a6b
     Accent Teal:     #00a3c4
     Light BG:        #f4f7fb
     Dark Text:       #1e2d40
     White:           #ffffff
     Border/Muted:    #d0dce8
   ============================================================ */

:root {
  --ecsist-primary:   #1a3a6b;
  --ecsist-accent:    #00a3c4;
  --ecsist-light-bg:  #f4f7fb;
  --ecsist-dark:      #1e2d40;
  --ecsist-muted:     #d0dce8;
  --ecsist-white:     #ffffff;
  --ecsist-gradient:  linear-gradient(135deg, #1a3a6b 0%, #00a3c4 100%);
  --radius:           8px;
  --shadow:           0 4px 18px rgba(26, 58, 107, 0.10);
  --transition:       0.25s ease;
}

/* ---- Global ---- */
body {
  font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
  color: var(--ecsist-dark);
  background: var(--ecsist-white);
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
  color: var(--ecsist-primary);
  font-weight: 700;
}

a {
  color: var(--ecsist-accent);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--ecsist-primary); }

/* ---- Header ---- */
.site-header,
.ast-primary-header-bar {
  background: var(--ecsist-primary) !important;
  box-shadow: 0 2px 12px rgba(26,58,107,0.18);
}

.ast-site-title,
.ast-site-title a,
.site-title,
.site-title a {
  color: var(--ecsist-white) !important;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.ast-primary-nav .menu-item > a,
.main-navigation .menu-item > a {
  color: var(--ecsist-white) !important;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius);
  transition: background var(--transition), color var(--transition);
}

.ast-primary-nav .menu-item > a:hover,
.main-navigation .menu-item > a:hover,
.ast-primary-nav .current-menu-item > a,
.main-navigation .current-menu-item > a {
  background: var(--ecsist-accent) !important;
  color: var(--ecsist-white) !important;
}

/* ---- Hero Banner ---- */
.ecsist-hero {
  background: var(--ecsist-gradient);
  color: var(--ecsist-white);
  padding: 90px 40px 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.ecsist-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.ecsist-hero h1 {
  color: var(--ecsist-white);
  font-size: 2.6rem;
  margin-bottom: 12px;
  position: relative;
  text-shadow: 0 2px 8px rgba(0,0,0,0.18);
}

.ecsist-hero .hero-acronym {
  font-size: 3.4rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  color: var(--ecsist-white);
  display: block;
  margin-bottom: 8px;
}

.ecsist-hero p {
  font-size: 1.15rem;
  max-width: 780px;
  margin: 0 auto 32px;
  opacity: 0.92;
  position: relative;
  line-height: 1.7;
}

.ecsist-hero .hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.35);
  border-radius: 24px;
  padding: 6px 20px;
  font-size: 0.88rem;
  letter-spacing: 0.06em;
  margin-bottom: 28px;
  position: relative;
}

.ecsist-btn {
  display: inline-block;
  background: var(--ecsist-white);
  color: var(--ecsist-primary) !important;
  font-weight: 700;
  padding: 14px 34px;
  border-radius: 30px;
  font-size: 1rem;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
}
.ecsist-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
  color: var(--ecsist-primary) !important;
}

.ecsist-btn-outline {
  background: transparent;
  color: var(--ecsist-white) !important;
  border: 2px solid rgba(255,255,255,0.7);
  margin-left: 14px;
}
.ecsist-btn-outline:hover {
  background: rgba(255,255,255,0.12);
  color: var(--ecsist-white) !important;
}

/* ---- Section Wrappers ---- */
.ecsist-section {
  padding: 72px 0;
}

.ecsist-section-alt {
  background: var(--ecsist-light-bg);
}

.ecsist-container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.ecsist-section-title {
  text-align: center;
  margin-bottom: 50px;
}

.ecsist-section-title h2 {
  font-size: 2rem;
  margin-bottom: 10px;
  color: var(--ecsist-primary);
}

.ecsist-section-title .title-underline {
  display: inline-block;
  width: 60px;
  height: 4px;
  background: var(--ecsist-gradient);
  border-radius: 2px;
  margin-bottom: 14px;
}

.ecsist-section-title p {
  color: #5a6c82;
  font-size: 1.05rem;
  max-width: 620px;
  margin: 0 auto;
}

/* ---- Stats Bar ---- */
.ecsist-stats {
  background: var(--ecsist-primary);
  color: var(--ecsist-white);
  padding: 40px 0;
}

.ecsist-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.ecsist-stat-item {
  text-align: center;
  padding: 20px;
  border-right: 1px solid rgba(255,255,255,0.12);
}
.ecsist-stat-item:last-child { border-right: none; }

.ecsist-stat-item .stat-number {
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--ecsist-accent);
  display: block;
  line-height: 1;
  margin-bottom: 6px;
}

.ecsist-stat-item .stat-label {
  font-size: 0.85rem;
  opacity: 0.82;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ---- Research Area Cards ---- */
.ecsist-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.ecsist-card {
  background: var(--ecsist-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px 28px;
  border-top: 4px solid var(--ecsist-accent);
  transition: transform var(--transition), box-shadow var(--transition);
}

.ecsist-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 32px rgba(26,58,107,0.15);
}

.ecsist-card .card-icon {
  width: 52px;
  height: 52px;
  background: var(--ecsist-gradient);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.5rem;
}

.ecsist-card h3 {
  font-size: 1.08rem;
  margin-bottom: 10px;
  color: var(--ecsist-primary);
}

.ecsist-card p {
  font-size: 0.93rem;
  color: #5a6c82;
  line-height: 1.65;
  margin: 0;
}

/* ---- Project Cards ---- */
.ecsist-project-card {
  background: var(--ecsist-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px 30px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 22px;
  align-items: start;
  border-left: 5px solid var(--ecsist-accent);
  transition: transform var(--transition), box-shadow var(--transition);
  margin-bottom: 20px;
}

.ecsist-project-card:hover {
  transform: translateX(4px);
  box-shadow: 0 8px 28px rgba(26,58,107,0.12);
}

.project-badge {
  background: var(--ecsist-gradient);
  color: var(--ecsist-white);
  border-radius: 8px;
  padding: 10px 14px;
  text-align: center;
  min-width: 80px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.4;
}

.project-info h3 {
  font-size: 1.05rem;
  margin: 0 0 6px;
  color: var(--ecsist-primary);
}

.project-info p {
  font-size: 0.9rem;
  color: #5a6c82;
  margin: 0;
}

.project-meta {
  text-align: right;
  white-space: nowrap;
}

.project-funding {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--ecsist-accent);
  display: block;
}

.project-years {
  font-size: 0.82rem;
  color: #8a9ab0;
}

/* ---- Team Member Cards ---- */
.ecsist-team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.ecsist-member-card {
  background: var(--ecsist-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
  padding: 28px 18px;
  transition: transform var(--transition), box-shadow var(--transition);
}

.ecsist-member-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(26,58,107,0.14);
}

.member-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--ecsist-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--ecsist-white);
  margin: 0 auto 14px;
  box-shadow: 0 4px 14px rgba(26,58,107,0.2);
}

.ecsist-member-card h3 {
  font-size: 0.97rem;
  margin-bottom: 4px;
  color: var(--ecsist-primary);
}

.member-role {
  font-size: 0.8rem;
  color: var(--ecsist-accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ---- Publication Item ---- */
.ecsist-pub-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.ecsist-pub-item {
  background: var(--ecsist-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px 26px;
  margin-bottom: 16px;
  border-left: 4px solid var(--ecsist-accent);
  transition: box-shadow var(--transition);
}

.ecsist-pub-item:hover {
  box-shadow: 0 8px 28px rgba(26,58,107,0.12);
}

.pub-type-badge {
  display: inline-block;
  background: var(--ecsist-light-bg);
  color: var(--ecsist-primary);
  border-radius: 4px;
  padding: 2px 10px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.ecsist-pub-item h4 {
  font-size: 0.97rem;
  color: var(--ecsist-primary);
  margin: 0 0 6px;
}

.ecsist-pub-item p {
  font-size: 0.87rem;
  color: #6a7c90;
  margin: 0;
}

/* ---- News Card ---- */
.ecsist-news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.ecsist-news-card {
  background: var(--ecsist-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.ecsist-news-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(26,58,107,0.14);
}

.news-card-header {
  background: var(--ecsist-gradient);
  height: 8px;
}

.news-card-body {
  padding: 26px 24px;
}

.news-date {
  font-size: 0.78rem;
  color: var(--ecsist-accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.ecsist-news-card h3 {
  font-size: 1rem;
  margin-bottom: 10px;
  color: var(--ecsist-primary);
  line-height: 1.45;
}

.ecsist-news-card p {
  font-size: 0.88rem;
  color: #6a7c90;
  margin: 0;
  line-height: 1.6;
}

/* ---- Innovation Showcase ---- */
.ecsist-innovation-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}

.ecsist-innovation-card {
  background: var(--ecsist-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px;
  border-top: 4px solid var(--ecsist-primary);
}

.innovation-icon {
  font-size: 2.5rem;
  margin-bottom: 14px;
  display: block;
}

.ecsist-innovation-card h3 {
  font-size: 1.05rem;
  margin-bottom: 10px;
  color: var(--ecsist-primary);
}

.ecsist-innovation-card p {
  font-size: 0.9rem;
  color: #5a6c82;
  margin-bottom: 14px;
}

.eu-radar-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #e8f6fb;
  color: var(--ecsist-accent);
  border-radius: 20px;
  padding: 5px 14px;
  font-size: 0.78rem;
  font-weight: 700;
}

/* ---- Footer ---- */
.site-footer,
.ast-small-footer {
  background: var(--ecsist-primary) !important;
  color: rgba(255,255,255,0.75) !important;
}

.ast-footer-widgets-area,
.widget-area {
  border-top: 1px solid rgba(255,255,255,0.1);
}

.site-footer a,
.ast-small-footer a {
  color: var(--ecsist-accent) !important;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .ecsist-cards-grid { grid-template-columns: repeat(2, 1fr); }
  .ecsist-team-grid  { grid-template-columns: repeat(3, 1fr); }
  .ecsist-stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .ecsist-hero h1   { font-size: 1.8rem; }
  .ecsist-hero .hero-acronym { font-size: 2.4rem; }
  .ecsist-cards-grid { grid-template-columns: 1fr; }
  .ecsist-team-grid  { grid-template-columns: repeat(2, 1fr); }
  .ecsist-news-grid  { grid-template-columns: 1fr; }
  .ecsist-innovation-grid { grid-template-columns: 1fr; }
  .ecsist-project-card { grid-template-columns: 1fr; }
  .project-meta { text-align: left; }
  .ecsist-stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .ecsist-team-grid  { grid-template-columns: 1fr; }
  .ecsist-stats-grid { grid-template-columns: repeat(2, 1fr); }
  .ecsist-stat-item  { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.12); }
}