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

:root {
  --gun: #1C2230;
  --gun2: #242B3A;
  --teal: #2A7F7F;
  --teal-light: #3AA3A3;
  --silver: #8A9BAE;
  --light: #F4F7FA;
  --white: #ffffff;
  --text: #1C2230;
  --text-muted: #556;
  --border: #DDE3EC;
  --amber: #F5A623;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--white);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== NAV ===== */
#navbar {
  position: sticky; top: 0; z-index: 200;
  background: rgba(28,34,48,0.97);
  backdrop-filter: blur(8px);
  display: flex; align-items: center;
  padding: 0 1.5rem;
  height: 54px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  gap: 1rem;
}

.nav-brand {
  font-family: 'Rajdhani', sans-serif;
  font-size: 15px; font-weight: 700;
  color: var(--white);
  white-space: nowrap;
  letter-spacing: 0.03em;
  margin-right: auto;
}
.nav-brand span { color: var(--teal-light); }

.nav-toggle {
  display: none;
  background: none; border: none;
  color: var(--white); font-size: 22px;
  cursor: pointer; padding: 4px 8px;
}

.nav-links {
  display: flex; align-items: center; gap: 0;
  flex-wrap: nowrap;
}

.nav-links a, .dropbtn {
  color: rgba(255,255,255,0.62);
  font-size: 13px; font-weight: 500;
  padding: 0 12px; height: 54px;
  display: flex; align-items: center;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
  letter-spacing: 0.02em;
  white-space: nowrap;
  background: none; border-top: none; border-left: none; border-right: none;
  cursor: pointer; font-family: inherit;
}
.nav-links a:hover, .nav-links a.active,
.dropbtn:hover, .dropdown:hover .dropbtn {
  color: var(--white);
  border-bottom-color: var(--teal-light);
  text-decoration: none;
}

/* Dropdown */
.dropdown { position: relative; }
.dropdown-menu {
  display: none;
  position: absolute; top: 54px; left: 0;
  background: var(--gun2);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 6px;
  min-width: 220px;
  z-index: 300;
  padding: 6px 0;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}
.dropdown:hover .dropdown-menu { display: block; }
.dropdown-menu a {
  height: auto; padding: 10px 18px;
  border-bottom: none;
  display: block;
  font-size: 13px;
}
.dropdown-menu a:hover {
  background: rgba(58,163,163,0.12);
  color: var(--teal-light);
}

/* ===== PAGE HERO ===== */
.page-hero {
  background: var(--gun);
  position: relative; overflow: hidden;
  padding: 64px 2rem 54px;
  display: flex; flex-direction: column;
  justify-content: flex-end; align-items: center;
  min-height: 180px;
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(42,127,127,0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42,127,127,0.1) 1px, transparent 1px);
  background-size: 44px 44px;
  animation: gridDrift 16s linear infinite;
  pointer-events: none;
}
@keyframes gridDrift {
  0% { background-position: 0 0; }
  100% { background-position: 44px 44px; }
}
/* Diagonal corner accents like reference site */
.page-hero::before, .page-hero::after {
  content: '';
  position: absolute;
  width: 260px; height: 260px;
  background: rgba(255,255,255,0.03);
  transform: rotate(30deg);
  pointer-events: none;
}
.page-hero::before { top: -80px; left: -60px; }
.page-hero::after  { bottom: -80px; right: -60px; }

.hero-content { position: relative; z-index: 2; text-align: center; }
.hero-content h1 {
  font-family: 'Rajdhani', sans-serif;
  font-size: clamp(30px, 5vw, 52px);
  font-weight: 400;
  color: rgba(255,255,255,0.88);
  letter-spacing: 0.02em;
}

/* ===== ABOUT PAGE ===== */
.about-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 3rem;
  max-width: 1000px;
  margin: 56px auto;
  padding: 0 2rem;
  flex: 1;
}

.about-info .info-block { margin-bottom: 24px; }
.about-info .info-block p { font-size: 14px; color: var(--text-muted); margin-bottom: 6px; }
.label { font-weight: 600; color: var(--text); }

.bio { font-size: 14px; color: var(--text-muted); line-height: 1.8; margin-bottom: 28px; }

.contact-block { margin-bottom: 28px; }
.contact-block p { font-size: 14px; color: var(--text-muted); margin-bottom: 4px; }

.section-mini-title {
  font-family: 'Rajdhani', sans-serif;
  font-size: 14px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--text); margin-bottom: 10px;
}

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; margin-top: 8px; }
.two-col ul { list-style: none; padding: 0; }
.two-col ul li {
  font-size: 13px; color: var(--text-muted);
  padding: 5px 0;
  border-bottom: 1px solid var(--border);
}
.two-col ul li:last-child { border-bottom: none; }

.about-photo { display: flex; justify-content: center; align-items: flex-start; padding-top: 4px; }
.photo-placeholder {
  width: 220px; height: 280px;
  background: #C0392B;
  border-radius: 6px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 12px;
}
.photo-initials {
  width: 72px; height: 72px;
  background: rgba(255,255,255,0.15);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: 'Rajdhani', sans-serif;
  font-size: 28px; font-weight: 700;
  color: var(--white);
}
.photo-placeholder p { font-size: 12px; color: rgba(255,255,255,0.6); }

/* Photo when real image is used */
.about-photo img {
  width: 220px; height: 280px;
  object-fit: cover; border-radius: 6px;
}

/* ===== GENERIC CONTENT PAGE ===== */
.content-page {
  max-width: 880px;
  margin: 52px auto;
  padding: 0 2rem;
  flex: 1;
}

/* Two-column: text left, image right (like reference) */
.op-intro {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 2.5rem;
  margin-bottom: 40px;
  align-items: start;
}
.op-intro-text { }
.op-intro-text h2 {
  font-family: 'Rajdhani', sans-serif;
  font-size: 20px; font-weight: 700;
  color: var(--gun);
  margin-bottom: 14px;
}
.op-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.op-table th {
  text-align: left; padding: 6px 10px;
  background: var(--light);
  border: 1px solid var(--border);
  font-weight: 600; color: var(--text);
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em;
}
.op-table td {
  padding: 7px 10px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 13px;
}
.op-table tr:nth-child(even) td { background: var(--light); }

.op-intro-img img, .op-intro-img .img-placeholder { width: 100%; }

/* Captioned image with label below */
.captioned { text-align: center; margin-bottom: 32px; }
.captioned .img-placeholder, .captioned img { width: 100%; border-radius: 6px; display: block; }
.captioned p { font-size: 12px; color: var(--silver); margin-top: 6px; }

/* 3-column screenshot grid */
.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 28px;
}
.screenshot-grid .img-placeholder, .screenshot-grid img {
  width: 100%; border-radius: 6px;
  display: block;
}

/* Caption between sections */
.step-caption {
  font-size: 13px; color: var(--text-muted);
  margin-bottom: 20px;
  padding-left: 2px;
}

/* Image placeholders */
.img-placeholder {
  background: linear-gradient(135deg, #2a3550 0%, #1e3a5f 100%);
  border: 1px solid #2a4a7f;
  border-radius: 6px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 8px;
  color: rgba(255,255,255,0.4);
  font-size: 12px;
}
.img-placeholder.tall { height: 300px; }
.img-placeholder.medium { height: 220px; }
.img-placeholder.small { height: 160px; }
.img-placeholder svg { opacity: 0.35; }

/* CATIA-style dark blue placeholder (matches screenshots) */
.img-placeholder.catia {
  background: linear-gradient(135deg, #1a2550 0%, #0d1a3f 100%);
  border-color: #1e3575;
}
.img-placeholder.catia-dialog {
  background: linear-gradient(135deg, #c8b89a 0%, #b8a88a 100%);
  border-color: #a09070;
}

/* ===== GALLERY ===== */
.gallery-grid {
  display: flex; flex-direction: column; gap: 40px;
}
.gallery-item .captioned .img-placeholder { height: 360px; }
.gallery-item .captioned p {
  font-size: 13px; color: var(--text-muted);
  margin-top: 8px;
}

/* ===== FOOTER ===== */
footer {
  background: var(--gun);
  text-align: center;
  padding: 24px 2rem;
  border-top: 1px solid rgba(255,255,255,0.06);
  margin-top: auto;
}
footer p { font-size: 12px; color: rgba(255,255,255,0.3); }
footer span { color: var(--teal-light); }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    flex-direction: column;
    align-items: flex-start;
    position: absolute; top: 54px; left: 0; right: 0;
    background: var(--gun2);
    padding: 8px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    gap: 0;
  }
  .nav-links.open { display: flex; }
  .nav-links a, .dropbtn {
    height: auto; padding: 12px 20px; width: 100%;
    border-bottom-color: transparent !important;
    border-bottom: none;
  }
  .dropdown { width: 100%; }
  .dropdown-menu {
    position: static; box-shadow: none;
    border: none; border-radius: 0;
    background: rgba(255,255,255,0.04);
    padding: 0;
  }
  .dropdown:hover .dropdown-menu { display: none; }
  .dropdown.open .dropdown-menu { display: block; }
  .dropdown-menu a { padding-left: 36px; }

  .about-layout { grid-template-columns: 1fr; }
  .about-photo { order: -1; justify-content: flex-start; }
  .two-col { grid-template-columns: 1fr; }

  .op-intro { grid-template-columns: 1fr; }
  .screenshot-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .screenshot-grid { grid-template-columns: 1fr; }
}