/* ===== ΒΑΣΙΚΈΣ ΡΥΘΜΊΣΕΙΣ & RESET ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #0b0b0b;
  color: #f0f0f0;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ===== ΣΤΑΘΕΡΉ ΚΕΦΑΛΊΔΑ (HEADER) ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 30px;
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  transition: background 0.3s ease;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  line-height: 1;
}

.logo img {
  height: 50px;
  width: auto;
  display: block;
  transition: opacity 0.3s ease;
}

.logo:hover img {
  opacity: 0.8;
}

.site-header nav {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.site-header nav a {
  background: transparent;
  color: #ffffff;
  text-decoration: none;
  font-size: 1rem;
  font-weight: 600;
  padding: 8px 18px;
  border: 2px solid rgba(255, 255, 255, 0.7);
  border-radius: 30px;
  transition: all 0.25s ease;
  letter-spacing: 0.3px;
  white-space: nowrap;
  backdrop-filter: blur(5px);
}

.site-header nav a:hover {
  background: #ffffff;
  color: #0b0b0b;
  border-color: #ffffff;
  transform: translateY(-2px);
}

/* ===== ΗΡΩΑΣ (HERO) - UNIQUE DESIGN ===== */
.hero {
  position: relative;
  min-height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: #0b0b0b;
  overflow: hidden;
}

/* Unique animated background pattern */
.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: 
    radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.02) 0%, transparent 70%);
  animation: rotateBg 60s linear infinite;
  z-index: 0;
}

@keyframes rotateBg {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Subtle grid overlay for depth */
.hero::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 1;
  pointer-events: none;
}

/* Βίντεο φόντου (αν υπάρχει) */
.hero video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  opacity: 0.25;
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 3;
  max-width: 920px;
  padding: 0 24px;
  width: 100%;
}

.black-box {
  background: linear-gradient(
    145deg,
    rgba(18, 18, 18, 0.92) 0%,
    rgba(8, 8, 8, 0.88) 100%
  );
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: clamp(36px, 5vw, 64px) clamp(24px, 4vw, 52px);
  border-radius: 24px;
  box-shadow: 
    0 30px 70px rgba(0, 0, 0, 0.7),
    0 0 0 1px rgba(255, 255, 255, 0.05) inset,
    0 0 100px rgba(255, 255, 255, 0.03) inset;
  position: relative;
  overflow: hidden;
}

/* Decorative accent line on top */
.black-box::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.6),
    transparent
  );
  border-radius: 0 0 4px 4px;
}

.black-box h1 {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-size: clamp(1.4rem, 3.8vw, 2.5rem);
  font-weight: 700;
  margin-bottom: clamp(14px, 2vw, 22px);
  color: #ffffff;
  line-height: 1.35;
  letter-spacing: -0.3px;
  word-wrap: break-word;
  overflow-wrap: break-word;
  hyphens: auto;
  text-wrap: balance;
}

.black-box p {
  font-size: clamp(0.9rem, 1.8vw, 1.15rem);
  color: #bbbbbb;
  margin-bottom: clamp(22px, 3vw, 34px);
  line-height: 1.6;
  max-width: 650px;
  margin-left: auto;
  margin-right: auto;
  font-weight: 400;
  letter-spacing: 0.2px;
  text-wrap: balance;
}

.black-box button {
  background: transparent;
  color: #ffffff;
  border: 2px solid rgba(255, 255, 255, 0.8);
  padding: clamp(12px, 1.5vw, 16px) clamp(28px, 4vw, 44px);
  font-size: clamp(0.9rem, 1.2vw, 1.05rem);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 50px;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.black-box button::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: #ffffff;
  transition: left 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: -1;
}

.black-box button:hover::before {
  left: 0;
}

.black-box button:hover {
  color: #0b0b0b;
  border-color: #ffffff;
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(255, 255, 255, 0.15);
}

/* ===== STRIPE - ΠΕΡΙΟΧΉ ΔΡΑΣΤΗΡΙΌΤΗΤΑΣ ===== */
.location-stripe {
  background: linear-gradient(90deg, #1a1a1a 0%, #252525 50%, #1a1a1a 100%);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  padding: 16px 20px;
  color: #ffffff;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.8px;
}

.location-stripe span {
  display: inline-block;
  padding: 0 10px;
}

/* ===== ΥΠΗΡΕΣΊΕΣ (SKILLS) ===== */
.skills {
  background: #111111;
  padding: 70px 20px;
  text-align: center;
}

.container_skills {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 15px;
}

.skills h2 {
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  color: #fff;
  margin-bottom: 40px;
  font-weight: 700;
}

.skills ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  padding: 0;
}

.skills ul li {
  background: rgba(255, 255, 255, 0.05);
  color: #ffffff;
  border: 1px solid #3a3a3a;
  padding: 12px 24px;
  border-radius: 40px;
  font-size: 1rem;
  font-weight: 500;
  transition: all 0.3s ease;
  backdrop-filter: blur(4px);
}

.skills ul li:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: #ffffff;
  transform: translateY(-3px);
}

/* ===== ΓΚΑΛΕΡΊ (GALLERY) ===== */
.gallery-section {
  background: #0b0b0b;
  padding: 70px 20px;
}

.gallery-container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 15px;
}

.gallery-section h2 {
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  color: #fff;
  text-align: center;
  margin-bottom: 50px;
  font-weight: 700;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  border: 1px solid #2a2a2a;
  transition: all 0.3s ease;
  background: #151515;
}

.gallery-item img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease, opacity 0.3s;
  opacity: 0.85;
}

.gallery-item:hover img {
  transform: scale(1.08);
  opacity: 1;
}

.gallery-item:hover {
  border-color: #ffffff;
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.6);
}

.gallery-caption {
  padding: 15px;
  text-align: center;
  font-weight: 600;
  color: #f0f0f0;
  letter-spacing: 0.3px;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(2px);
  font-size: 1rem;
}

/* ===== ΕΠΙΚΟΙΝΩΝΊΑ (χωρίς φόρμα, μόνο στοιχεία) ===== */
.contact {
  background: #111111;
  padding: 60px 20px;
  text-align: center;
  border-top: 1px solid #2a2a2a;
}

.contact .container {
  max-width: 700px;
  margin: 0 auto;
}

.contact h2 {
  font-size: clamp(1.8rem, 5vw, 2.5rem);
  color: #fff;
  margin-bottom: 20px;
}

.contact p {
  color: #cccccc;
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.contact .phone-email {
  margin-top: 35px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.contact-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid #2a2a2a;
  border-radius: 14px;
  padding: 18px 24px;
  transition: all 0.3s ease;
}

.contact-group:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: #ffffff;
  transform: translateY(-3px);
}

.contact-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: #999999;
  font-weight: 600;
}

.contact-group > span:last-child {
  font-size: 1.25rem;
  font-weight: 500;
  color: #ffffff;
}

.contact .phone-email a {
  color: #fff;
  text-decoration: none;
  border-bottom: 2px solid #555;
  transition: all 0.2s;
}

.contact .phone-email a:hover {
  border-bottom-color: #fff;
  color: #ddd;
}

/* ===== ΚΟΙΝΩΝΙΚΆ ΔΊΚΤΥΑ ===== */
.social-section {
  background: #0b0b0b;
  padding: 50px 20px 40px;
  text-align: center;
  border-top: 1px solid #1e1e1e;
}

.social-section h3 {
  font-size: clamp(1.3rem, 3vw, 1.6rem);
  color: #ffffff;
  font-weight: 700;
  margin-bottom: 25px;
  letter-spacing: 0.5px;
}

.social-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
}

.social-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  color: #ffffff;
  text-decoration: none;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.social-btn svg {
  width: 28px;
  height: 28px;
  display: block;
  transition: transform 0.35s ease;
  position: relative;
  z-index: 1;
}

/* Instagram gradient background */
.social-btn.instagram {
  background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
  box-shadow: 0 8px 24px rgba(220, 39, 67, 0.3);
}

.social-btn:hover {
  transform: translateY(-5px) scale(1.08);
  box-shadow: 0 14px 34px rgba(220, 39, 67, 0.55);
}

.social-btn:hover svg {
  transform: scale(1.12);
}

.social-btn:active {
  transform: translateY(-2px) scale(1.02);
}

/* ===== ΥΠΟΣΈΛΙΔΟ ===== */
footer {
  background: #0b0b0b;
  border-top: 1px solid #2a2a2a;
  text-align: center;
  padding: 25px 20px;
  color: #888;
  font-size: 0.95rem;
}

/* ===== ΑΠΌΚΡΙΣΗ (MOBILE & TABLET) ===== */
@media (max-width: 768px) {
  .site-header {
    padding: 10px 15px;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
  }

  .logo img {
    height: 40px;
  }

  .site-header nav {
    gap: 8px;
    justify-content: center;
    width: 100%;
  }

  .site-header nav a {
    font-size: 0.85rem;
    padding: 7px 14px;
    border-width: 1.5px;
  }

  .hero {
    min-height: 90vh;
  }

  .black-box {
    padding: 30px 18px;
    border-radius: 18px;
  }

  .black-box h1 {
    font-size: clamp(1.15rem, 4.5vw, 1.6rem);
    line-height: 1.4;
    letter-spacing: -0.1px;
  }

  .black-box p {
    font-size: clamp(0.85rem, 2.8vw, 0.95rem);
    line-height: 1.55;
  }

  .gallery-grid {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
  }

  .gallery-item img {
    height: 180px;
  }

  .contact .phone-email {
    gap: 16px;
  }

  .contact-group {
    padding: 16px 20px;
  }

  .contact-group > span:last-child {
    font-size: 1.1rem;
  }
}

@media (max-width: 480px) {
  .site-header nav a {
    font-size: 0.75rem;
    padding: 5px 10px;
  }

  .logo img {
    height: 34px;
  }

  .location-stripe {
    font-size: 0.9rem;
    padding: 14px 15px;
    letter-spacing: 0.5px;
  }

  .black-box {
    padding: 26px 16px;
    border-radius: 16px;
  }

  .black-box::before {
    width: 60px;
    height: 2px;
  }

  .black-box h1 {
    font-size: 1.1rem;
    line-height: 1.45;
    margin-bottom: 12px;
  }

  .black-box p {
    font-size: 0.82rem;
    line-height: 1.5;
    margin-bottom: 20px;
  }

  .black-box button {
    padding: 11px 24px;
    font-size: 0.8rem;
    letter-spacing: 0.5px;
  }

  .gallery-item img {
    height: 150px;
  }

  .contact .phone-email {
    font-size: 1.1rem;
  }

  .contact-group {
    padding: 14px 16px;
  }

  .contact-label {
    font-size: 0.75rem;
    letter-spacing: 1px;
  }

  .contact-group > span:last-child {
    font-size: 1rem;
  }

  .social-section {
    padding: 40px 15px 30px;
  }

  .social-section h3 {
    font-size: 1.15rem;
    margin-bottom: 20px;
  }

  .social-btn {
    width: 50px;
    height: 50px;
  }

  .social-btn svg {
    width: 24px;
    height: 24px;
  }
}