/* ==========================================================================
   Regena — στατικό website. Καθαρό CSS, χωρίς frameworks.
   ========================================================================== */

:root {
  --bg: #12151a;
  --bg-alt: #1a1e25;
  --bg-alt-2: #20252d;
  --border: rgba(255, 255, 255, 0.09);
  --text: #eef1f5;
  --text-muted: #9aa3b0;
  --accent: #d2792a;
  --accent-light: #e79447;
  --accent-dark: #a85f1f;
  --accent-contrast: #12151a;
  --radius: 6px;
  --container: 1180px;
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 20px;
}

h1, h2, h3, h4 {
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2rem, 5vw + 1rem, 3.4rem); }
h2 { font-size: clamp(1.5rem, 2.5vw + 1rem, 2.3rem); }
h3 { font-size: 1.2rem; }

p { margin: 0 0 1em; }

.text-muted { color: var(--text-muted); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-light);
  margin-bottom: 14px;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--accent);
  display: inline-block;
}

.section {
  padding: 72px 0;
}

.section--alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-head {
  max-width: 640px;
  margin-bottom: 40px;
}

.section-head.center {
  max-width: 640px;
  margin-inline: auto;
  text-align: center;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
  font-family: inherit;
}

.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--accent);
  color: #14100a;
  box-shadow: 0 8px 24px rgba(210, 121, 42, 0.28);
}

.btn--primary:hover {
  background: var(--accent-light);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent-light);
}

.btn--block {
  width: 100%;
  justify-content: center;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 18, 23, 0.97);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand {
  display: flex;
  align-items: center;
}

.brand img {
  height: 30px;
  width: auto;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 44px;
  height: 44px;
  padding: 0;
  cursor: pointer;
  position: relative;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 11px;
  right: 11px;
  height: 2px;
  background: var(--text);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle span { top: 21px; }
.nav-toggle span::before { top: -7px; }
.nav-toggle span::after { top: 7px; }

.nav-toggle[aria-expanded="true"] span {
  background: transparent;
}
.nav-toggle[aria-expanded="true"] span::before {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span::after {
  transform: translateY(-7px) rotate(-45deg);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 28px;
  margin: 0;
  padding: 0;
}

.nav-links a {
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  padding: 8px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--text);
  border-color: var(--accent);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-cta .btn {
  padding: 10px 20px;
}

@media (max-width: 860px) {
  .nav-toggle {
    display: block;
  }

  .main-nav {
    position: fixed;
    inset: 76px 0 0 0;
    background: var(--bg);
    flex-direction: column;
    align-items: stretch;
    padding: 24px 20px 32px;
    gap: 24px;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    overflow-y: auto;
  }

  .main-nav.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .nav-links {
    flex-direction: column;
    gap: 4px;
  }

  .nav-links a {
    display: block;
    padding: 14px 4px;
    border-bottom: 1px solid var(--border);
  }

  .nav-cta {
    flex-direction: column;
    align-items: stretch;
  }

  .nav-cta .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  color: #fff;
  background-color: #05070a;
  background-image:
    linear-gradient(180deg, rgba(6, 8, 11, 0.55) 0%, rgba(8, 10, 13, 0.72) 45%, rgba(9, 11, 14, 0.96) 100%),
    url("../photos/work-photos/work5.jpg");
  background-size: cover;
  background-position: center 30%;
}

.hero .container {
  padding-block: 120px 80px;
}

.hero-content {
  max-width: 720px;
}

.hero h1 {
  margin-bottom: 22px;
}

.hero-lede {
  font-size: 1.15rem;
  color: rgba(238, 241, 245, 0.85);
  max-width: 560px;
  margin-bottom: 34px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 64px;
  flex-wrap: wrap;
}

.hero-stat strong {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-light);
}

.hero-stat span {
  font-size: 0.85rem;
  color: rgba(238, 241, 245, 0.7);
}

/* ---------- Page hero (interior pages) ---------- */

.page-hero {
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(1200px 420px at 15% -10%, rgba(210, 121, 42, 0.12), transparent 60%),
    var(--bg);
}

.page-hero h1 {
  margin-bottom: 12px;
}

.breadcrumb {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.breadcrumb a {
  text-decoration: none;
  color: var(--text-muted);
}

.breadcrumb a:hover {
  color: var(--accent-light);
}

/* ---------- Cards / Grids ---------- */

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

.grid-2 {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; gap: 32px; }
}

.card {
  background: var(--bg-alt-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.card:hover {
  border-color: rgba(210, 121, 42, 0.45);
  transform: translateY(-3px);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  background: rgba(210, 121, 42, 0.12);
  color: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.card-icon svg {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
}

.card h3 {
  margin-bottom: 10px;
}

.card ul {
  margin: 14px 0 0;
  padding-left: 18px;
  color: var(--text-muted);
}

.card ul li {
  margin-bottom: 6px;
}

/* ---------- Media frame ---------- */

.media-frame {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- Why-filtering flow ---------- */

.flow {
  display: flex;
  align-items: stretch;
  gap: 12px;
  flex-wrap: wrap;
  margin: 8px 0 40px;
}

.flow-step {
  flex: 1 1 200px;
  background: var(--bg-alt-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 20px;
  position: relative;
}

.flow-step .n {
  color: var(--accent-light);
  font-weight: 800;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  display: block;
  margin-bottom: 8px;
}

.flow-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 1.4rem;
  flex: 0 0 auto;
}

@media (max-width: 760px) {
  .flow { flex-direction: column; }
  .flow-arrow { transform: rotate(90deg); justify-content: flex-start; padding-left: 20px; }
}

.callout {
  border-left: 3px solid var(--accent);
  background: rgba(210, 121, 42, 0.08);
  padding: 20px 24px;
  border-radius: 0 var(--radius) var(--radius) 0;
}

/* ---------- Projects / gallery ---------- */

.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

@media (max-width: 900px) {
  .gallery { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .gallery { grid-template-columns: 1fr; }
}

.gallery-item {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-alt-2);
}

.gallery-item .media-frame {
  border: none;
  border-radius: 0;
  box-shadow: none;
  aspect-ratio: 4 / 3;
}

.gallery-item img {
  transition: transform 0.35s ease;
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-caption {
  padding: 14px 16px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ---------- Contact ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
}

@media (max-width: 900px) {
  .contact-grid { grid-template-columns: 1fr; }
}

.contact-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.contact-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.contact-list .card-icon {
  flex: 0 0 auto;
  width: 40px;
  height: 40px;
  margin-bottom: 0;
}

.contact-list a {
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
}

.contact-list a:hover {
  color: var(--accent-light);
}

.contact-list .label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 2px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.form-card {
  background: var(--bg-alt-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

.field {
  margin-bottom: 18px;
}

.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-muted);
}

.field input,
.field textarea {
  width: 100%;
  padding: 13px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.15s ease;
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.field textarea {
  resize: vertical;
  min-height: 120px;
}

.form-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 14px;
}

.form-status {
  margin-top: 16px;
  font-size: 0.9rem;
  font-weight: 600;
  display: none;
}

.form-status.is-success {
  display: block;
  color: #6fd394;
}

.form-status.is-error {
  display: block;
  color: #e2725b;
}

.map-frame {
  margin-top: 28px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

.map-frame iframe {
  width: 100%;
  height: 260px;
  border: 0;
  display: block;
}

/* ---------- CTA band ---------- */

.cta-band {
  background: linear-gradient(120deg, #171a1f, #1c2027);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 56px 0;
  text-align: center;
}

.cta-band h2 {
  margin-bottom: 10px;
}

.cta-band p {
  color: var(--text-muted);
  margin-bottom: 28px;
}

/* ---------- Teaser links (home page) ---------- */

.teaser-links {
  margin-top: 18px;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  font-weight: 700;
  color: var(--accent-light);
  font-size: 0.92rem;
}

.link-arrow::after {
  content: "→";
  transition: transform 0.15s ease;
}

.link-arrow:hover::after {
  transform: translateX(4px);
}

/* ---------- Footer ---------- */

.site-footer {
  background: #0d0f13;
  border-top: 1px solid var(--border);
  padding: 56px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

@media (max-width: 760px) {
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

.footer-brand img {
  height: 26px;
  margin-bottom: 16px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.92rem;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  text-decoration: none;
  color: var(--text);
  font-size: 0.92rem;
}

.footer-col a:hover {
  color: var(--accent-light);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ---------- Utilities ---------- */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  background: var(--accent);
  color: #14100a;
  padding: 10px 16px;
  border-radius: var(--radius);
  z-index: 200;
  text-decoration: none;
  font-weight: 700;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 12px;
}