/*
Theme Name: UnderwaterX Deep-Tech Defense
Theme URI: https://underwaterx.gr/
Author: UnderwaterX
Author URI: https://underwaterx.gr/
Description: A deep-tech defense theme for UNDERWATER-X featuring a near-black navy palette, cyan accent colors, and mission-critical engineering aesthetics. Designed for defense procurement, offshore energy, and maritime technology companies. Bilingual Greek/English support built-in.
Version: 1.4.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: underwaterx-deep-tech
Tags: dark, one-column, custom-menu, custom-logo, featured-images, translation-ready, business, portfolio
*/

/* =========================================================
   UnderwaterX — Deep-Tech Defense Theme
   Palette: Navy #060D1A / Cyan #4DD0E1 / Amber #F5A623
   ========================================================= */

* { box-sizing: border-box; margin: 0; padding: 0; }

/* Ελληνικά κεφαλαία χωρίς τόνους — όταν το CSS μετατρέπει κείμενο σε uppercase
   πρέπει να αφαιρεθούν οι τόνοι (π.χ. Εταιρεία -> ΕΤΑΙΡΕΙΑ, όχι ΕΤΑΙΡΕΊΑ).
   Το font-feature-settings "case" το επιτρέπει σε φόντα που το υποστηρίζουν,
   ενώ το CSS text-transform με κατάλληλο locale γλωσσικό context κάνει το σωστό. */
:lang(el) { font-feature-settings: "case"; }

:root {
  --bg-primary: #060D1A;
  --bg-secondary: #0A1628;
  --bg-tertiary: #111E35;
  --text-primary: #E8EEF7;
  --text-secondary: #8A96AB;
  --text-muted: #5A6478;
  --accent-cyan: #4DD0E1;
  --accent-amber: #F5A623;
  --border: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.2);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Monaco, Consolas, monospace;
  --max-width: 1280px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--accent-cyan); text-decoration: none; transition: opacity 0.2s; }
a:hover { opacity: 0.75; }

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

/* ========== HEADER ========== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  background: rgba(6,13,26,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 0.5px solid var(--border);
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.site-branding {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-branding svg { flex-shrink: 0; }

.site-title {
  font-size: 13px;
  letter-spacing: 0.14em;
  font-weight: 500;
  color: var(--text-primary);
}

.main-nav ul {
  display: flex;
  gap: 28px;
  list-style: none;
  align-items: center;
}

.main-nav a {
  font-size: 13px;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  font-weight: 500;
  transition: color 0.2s;
}

.main-nav a:hover { color: var(--text-primary); opacity: 1; }

.lang-switcher {
  font-size: 11px;
  color: var(--accent-cyan);
  letter-spacing: 0.1em;
  font-weight: 500;
  padding: 6px 12px;
  border: 0.5px solid var(--accent-cyan);
  border-radius: 2px;
  cursor: pointer;
  background: transparent;
  font-family: inherit;
}

.lang-switcher:hover { background: rgba(77,208,225,0.1); }

/* ========== HERO ========== */
.hero {
  padding: 160px 0 80px;
  position: relative;
  border-bottom: 0.5px solid var(--border);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 50%; height: 100%;
  background: radial-gradient(circle at 70% 50%, rgba(77,208,225,0.08), transparent 60%);
  pointer-events: none;
}

.hero-eyebrow {
  font-size: 11px;
  color: var(--accent-cyan);
  letter-spacing: 0.22em;
  margin-bottom: 24px;
  text-transform: uppercase;
  font-weight: 500;
}

.hero-eyebrow::before { content: '◦ '; }

.hero h1 {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 500;
  line-height: 1.1;
  margin-bottom: 24px;
  max-width: 720px;
  letter-spacing: -0.01em;
}

.hero-sub {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.65;
  margin-bottom: 40px;
}

.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn-primary, .btn-secondary {
  display: inline-block;
  padding: 13px 22px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
  border: none;
}

.btn-primary {
  background: var(--accent-cyan);
  color: var(--bg-primary);
}

.btn-primary:hover { background: #6DDAE8; opacity: 1; }

.btn-secondary {
  border: 0.5px solid var(--border-strong);
  color: var(--text-primary);
  background: transparent;
}

.btn-secondary:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); opacity: 1; }

/* ========== SPECS BAR ========== */
.specs-bar {
  border-top: 0.5px solid var(--border);
  padding: 32px 0;
  margin-top: 64px;
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.spec-item .spec-label {
  font-size: 10px;
  color: var(--text-secondary);
  letter-spacing: 0.18em;
  margin-bottom: 6px;
  text-transform: uppercase;
  font-weight: 500;
}

.spec-item .spec-value {
  font-size: 28px;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.spec-item .spec-unit {
  font-size: 13px;
  color: var(--text-secondary);
  margin-left: 4px;
  font-weight: 400;
}

/* ========== SECTIONS ========== */
section {
  padding: 100px 0;
  border-bottom: 0.5px solid var(--border);
  scroll-margin-top: 72px; /* fallback για anchor jumping όταν δεν τρέχει το JS */
}

.section-eyebrow {
  font-size: 11px;
  color: var(--accent-cyan);
  letter-spacing: 0.22em;
  margin-bottom: 20px;
  text-transform: uppercase;
  font-weight: 500;
}

.section-eyebrow::before { content: '◦ '; }

.section-title {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 500;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -0.01em;
  max-width: 720px;
}

.section-lead {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.7;
  margin-bottom: 56px;
}

/* ========== TEAM ========== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.team-card {
  background: var(--bg-secondary);
  border: 0.5px solid var(--border);
  padding: 32px 24px;
  border-radius: 2px;
  transition: border-color 0.2s;
}

.team-card:hover { border-color: var(--accent-cyan); }

.team-photo {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 20px;
  border: 1px solid var(--border);
}

.team-name {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 4px;
}

.team-role {
  font-size: 12px;
  color: var(--accent-cyan);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
  font-weight: 500;
}

.team-focus {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 0.5px solid var(--border);
}

.team-section-title {
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 10px;
  font-weight: 500;
}

.team-list {
  list-style: none;
  margin-bottom: 16px;
}

.team-list li {
  font-size: 13px;
  color: var(--text-secondary);
  padding: 3px 0;
  line-height: 1.5;
}

.team-list li::before {
  content: '— ';
  color: var(--text-muted);
}

/* ========== SERVICES ========== */
.services-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.service-card {
  background: var(--bg-secondary);
  border: 0.5px solid var(--border);
  padding: 32px;
  border-radius: 2px;
}

.service-card h3 {
  font-size: 22px;
  font-weight: 500;
  margin-bottom: 12px;
}

.service-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 24px;
}

.feature-list {
  list-style: none;
}

.feature-list li {
  font-size: 13px;
  color: var(--text-secondary);
  padding: 10px 0;
  border-bottom: 0.5px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.feature-list li:last-child { border-bottom: none; }

.feature-list li .feat-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: var(--accent-cyan);
}

.feature-list li .feat-label {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
}

.feature-list li .feat-value {
  color: var(--text-primary);
  font-weight: 500;
  font-family: var(--font-mono);
  font-size: 12px;
}

.service-card .service-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}

.service-card .service-icon {
  width: 40px;
  height: 40px;
  border: 0.5px solid var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  flex-shrink: 0;
  border-radius: 2px;
}

.service-card .service-icon svg {
  width: 22px;
  height: 22px;
}

/* ========== VIDEO SECTION ========== */
.video-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--bg-secondary);
  border: 0.5px solid var(--border);
  overflow: hidden;
}

.video-wrap video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.video-wrap .video-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  color: var(--text-secondary);
  background: var(--bg-secondary);
}

.video-wrap .video-placeholder .icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 0.5px solid var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  font-size: 18px;
}

.video-wrap .video-placeholder .label {
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

/* ========== APPLICATIONS ========== */
.applications-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 48px;
}

.app-card {
  background: var(--bg-secondary);
  border: 0.5px solid var(--border);
  padding: 28px;
  border-radius: 2px;
}

.app-tag {
  display: inline-block;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 2px;
  margin-bottom: 16px;
  font-weight: 500;
}

.app-tag.civil { background: rgba(77,208,225,0.15); color: var(--accent-cyan); }
.app-tag.defence { background: rgba(245,166,35,0.15); color: var(--accent-amber); }

.app-card h4 {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 12px;
}

.app-card ul {
  list-style: none;
}

.app-card ul li {
  font-size: 13px;
  color: var(--text-secondary);
  padding: 5px 0;
  line-height: 1.5;
}

.app-card ul li::before {
  content: '→ ';
  color: var(--text-muted);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.gallery-item {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  border-radius: 2px;
  border: 0.5px solid var(--border);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.75);
  transition: filter 0.3s;
}

.gallery-item:hover img { filter: brightness(1); }

.gallery-item .caption {
  position: absolute;
  bottom: 12px;
  left: 12px;
  font-size: 12px;
  letter-spacing: 0.02em;
  font-weight: 500;
  color: var(--text-primary);
  background: rgba(6,13,26,0.85);
  padding: 4px 8px;
  border-radius: 2px;
}

/* ========== CONTACT ========== */
.contact-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-info h3 {
  font-size: 24px;
  font-weight: 500;
  margin-bottom: 16px;
}

.contact-info p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.65;
}

.contact-detail {
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.contact-value {
  font-size: 16px;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.contact-value a { color: var(--accent-cyan); }

/* ========== FOOTER ========== */
.site-footer {
  background: var(--bg-secondary);
  padding: 48px 0 28px;
  border-top: 0.5px solid var(--border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 32px;
}

.footer-grid h5 {
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
  font-weight: 500;
}

.footer-grid ul { list-style: none; }
.footer-grid ul li { padding: 4px 0; }
.footer-grid ul li a { font-size: 13px; color: var(--text-secondary); }
.footer-grid ul li a:hover { color: var(--accent-cyan); opacity: 1; }

.footer-bottom {
  padding-top: 24px;
  border-top: 0.5px solid var(--border);
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 900px) {
  .main-nav ul { gap: 16px; }
  .main-nav a { font-size: 11px; }
  .specs-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .team-grid, .services-grid, .applications-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr 1fr; }
  .contact-block { grid-template-columns: 1fr; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .hero { padding: 120px 0 60px; }
  section { padding: 72px 0; }
}

@media (max-width: 600px) {
  .container, .header-inner { padding: 0 20px; }
  .main-nav { display: none; }
  .specs-grid { grid-template-columns: 1fr 1fr; }
  .gallery-grid { grid-template-columns: 1fr; }
}