/* ─── Portal Design System ─────────────────────────────────── */
:root {
  --blue:       #1B4F9B;
  --blue-mid:   #2563C8;
  --blue-bright:#3B7FE8;
  --text:       #0F172A;
  --text-2:     rgba(10,20,40,0.56);
  --text-3:     rgba(10,20,40,0.38);
  --bg:         #FFFFFF;
  --bg-2:       #F3F6FB;
  --bg-card:    #EBF0F9;
  --border:     rgba(10,20,40,0.10);
  --border-blue:rgba(27,79,155,0.22);
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.07), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.09), 0 2px 6px rgba(0,0,0,0.05);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.12), 0 4px 12px rgba(0,0,0,0.06);
  --radius:     12px;
  --radius-sm:  8px;
  --radius-lg:  18px;
}

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

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ─── Portal Nav ───────────────────────────────────────────── */
#portal-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.pnav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 32px;
}

.pnav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.pnav-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--blue);
  background: rgba(27,79,155,0.08);
  border: 1px solid var(--border-blue);
  padding: 2px 8px;
  border-radius: 20px;
}

.pnav-links {
  display: flex;
  gap: 4px;
  flex: 1;
}

.pnav-links a {
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
  padding: 6px 14px;
  border-radius: 8px;
  transition: color 0.18s, background 0.18s;
}

.pnav-links a:hover { color: var(--blue); background: rgba(27,79,155,0.07); }
.pnav-links a.active { color: var(--blue); background: rgba(27,79,155,0.10); }

.pnav-right {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
}

.pnav-name {
  font-size: 13px;
  color: var(--text-2);
}

.pnav-logout-btn {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-2);
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 14px;
  cursor: pointer;
  transition: color 0.18s, border-color 0.18s, background 0.18s;
  font-family: inherit;
}
.pnav-logout-btn:hover {
  color: var(--text);
  border-color: rgba(10,20,40,0.22);
  background: var(--bg-2);
}

.pnav-back-site {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-3);
  text-decoration: none;
  padding: 5px 10px;
  border-radius: 6px;
  transition: color 0.18s, background 0.18s;
}
.pnav-back-site:hover { color: var(--text-2); background: var(--bg-2); }

.pnav-divider {
  width: 1px;
  height: 18px;
  background: var(--border);
  flex-shrink: 0;
}

/* ─── Login Page ───────────────────────────────────────────── */
body.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-2);
}

.login-shell {
  width: 100%;
  min-height: 100vh;
  display: flex;
}

.login-visual {
  flex: 1;
  background: linear-gradient(135deg, #0c2044 0%, #1B4F9B 60%, #2563C8 100%);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 56px;
}
.login-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(59,127,232,0.35) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 80%, rgba(27,79,155,0.4) 0%, transparent 50%);
}
.login-visual-rings {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.login-visual-rings span {
  display: block;
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.12);
  transform: translate(-50%,-50%);
}
.login-visual-rings span:nth-child(1) { width: 200px; height: 200px; }
.login-visual-rings span:nth-child(2) { width: 340px; height: 340px; border-color: rgba(255,255,255,0.07); }
.login-visual-rings span:nth-child(3) { width: 500px; height: 500px; border-color: rgba(255,255,255,0.04); }
.login-visual-rings span:nth-child(4) { width: 680px; height: 680px; border-color: rgba(255,255,255,0.03); }

.login-visual-text { position: relative; z-index: 1; }
.login-visual-text h2 {
  font-size: 28px;
  font-weight: 700;
  color: #fff;
  line-height: 1.25;
  margin-bottom: 12px;
}
.login-visual-text p {
  font-size: 15px;
  color: rgba(255,255,255,0.65);
  max-width: 320px;
  line-height: 1.6;
}
.login-visual-cert {
  margin-top: 32px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,0.5);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  position: relative;
  z-index: 1;
}
.login-visual-cert::before {
  content: '';
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #4ade80;
  flex-shrink: 0;
}

.login-form-side {
  width: 460px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 56px 52px;
  background: #fff;
}

.login-form-logo { margin-bottom: 40px; }
.login-form-logo img { height: 28px; display: block; }

.login-access-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--blue);
  background: rgba(27,79,155,0.08);
  border: 1px solid var(--border-blue);
  border-radius: 20px;
  padding: 4px 12px;
  margin-bottom: 20px;
}
.login-access-badge::before {
  content: '';
  display: block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--blue-bright);
}

.login-form-side h1 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.login-form-side .login-sub {
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 36px;
}

.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 18px; }
.field label { font-size: 13px; font-weight: 500; color: var(--text); }
.field input {
  height: 44px;
  padding: 0 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  outline: none;
  transition: border-color 0.18s, box-shadow 0.18s;
  font-family: inherit;
}
.field input::placeholder { color: var(--text-3); }
.field input:focus {
  border-color: var(--blue-mid);
  box-shadow: 0 0 0 3px rgba(37,99,200,0.12);
}

.error-msg {
  background: rgba(212,43,43,0.07);
  border: 1px solid rgba(212,43,43,0.2);
  color: #b91c1c;
  font-size: 13px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}

.btn-primary {
  width: 100%;
  height: 46px;
  background: var(--blue);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.18s, transform 0.1s;
  margin-top: 4px;
  font-family: inherit;
  letter-spacing: 0.01em;
}
.btn-primary:hover:not(:disabled) { background: var(--blue-mid); }
.btn-primary:active:not(:disabled) { transform: scale(0.99); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

.login-hint {
  margin-top: 28px;
  font-size: 12px;
  color: var(--text-3);
  line-height: 1.5;
  border-top: 1px solid var(--border);
  padding-top: 20px;
}

/* ─── Page Shell ───────────────────────────────────────────── */
.page-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── Welcome Page ─────────────────────────────────────────── */
.welcome-hero {
  padding: 64px 0 0;
}
.welcome-eyebrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue-mid);
  margin-bottom: 16px;
}
.welcome-hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  color: var(--text);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  max-width: 640px;
}
.welcome-hero h1 em {
  font-style: normal;
  background: linear-gradient(90deg, var(--blue), var(--blue-bright));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.welcome-hero p {
  font-size: 17px;
  color: var(--text-2);
  max-width: 540px;
  line-height: 1.7;
  margin-bottom: 36px;
}

.btn-blue {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--blue);
  color: #fff;
  text-decoration: none;
  padding: 13px 26px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  transition: background 0.18s, transform 0.1s;
  letter-spacing: 0.01em;
}
.btn-blue:hover { background: var(--blue-mid); }
.btn-blue svg { transition: transform 0.18s; }
.btn-blue:hover svg { transform: translateX(3px); }

.welcome-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding: 56px 0;
}
.feature-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}
.feature-icon {
  width: 44px; height: 44px;
  background: rgba(27,79,155,0.10);
  border: 1px solid var(--border-blue);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
  color: var(--blue);
}
.feature-card h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.6;
}

.welcome-about {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 48px;
  margin-bottom: 64px;
  display: flex;
  gap: 48px;
  align-items: center;
}
.welcome-about-text { flex: 1; }
.welcome-about-text h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}
.welcome-about-text p {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.7;
}
.welcome-about-stats {
  display: flex;
  gap: 32px;
  flex-shrink: 0;
}
.about-stat { text-align: center; }
.about-stat strong {
  display: block;
  font-size: 28px;
  font-weight: 800;
  color: var(--blue);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 4px;
}
.about-stat span { font-size: 12px; color: var(--text-2); font-weight: 500; }

/* ─── Models Gallery ───────────────────────────────────────── */
.models-header {
  padding: 48px 0 36px;
}
.models-header h1 {
  font-size: 32px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}
.models-header p { font-size: 15px; color: var(--text-2); }

.models-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding-bottom: 64px;
}

.product-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.22s, border-color 0.22s, transform 0.22s;
  cursor: pointer;
}
.product-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-blue);
  transform: translateY(-3px);
}

.product-card-visual {
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, #EBF0F9 0%, #D8E4F5 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.product-card-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 60% 40%, rgba(59,127,232,0.12) 0%, transparent 65%);
}
.product-3d-icon {
  width: 72px; height: 72px;
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--border-blue);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--blue-mid);
  position: relative;
  z-index: 1;
  backdrop-filter: blur(4px);
}

.product-card-badge {
  position: absolute;
  top: 14px; right: 14px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 20px;
  background: var(--blue);
  color: #fff;
  z-index: 2;
}
.product-card-badge.badge-neu { background: #0e9f6e; }

.product-card-body { padding: 20px 22px 22px; flex: 1; display: flex; flex-direction: column; }
.product-cat {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--blue-mid);
  margin-bottom: 8px;
}
.product-card-body h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  line-height: 1.3;
}
.product-card-body p {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.55;
  flex: 1;
  margin-bottom: 20px;
}
.product-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--blue);
  background: rgba(27,79,155,0.08);
  border: 1px solid var(--border-blue);
  border-radius: var(--radius-sm);
  padding: 9px 16px;
  align-self: flex-start;
  transition: background 0.18s, color 0.18s;
}
.product-card:hover .product-card-cta {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
}
.product-card-cta svg { transition: transform 0.18s; }
.product-card:hover .product-card-cta svg { transform: translateX(3px); }

/* ─── Model Detail Page ────────────────────────────────────── */
.model-detail-header {
  padding: 32px 0 24px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-2);
  text-decoration: none;
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: color 0.18s, border-color 0.18s, background 0.18s;
}
.back-btn:hover { color: var(--text); border-color: rgba(10,20,40,0.22); background: var(--bg-2); }

.model-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 32px;
  padding-bottom: 64px;
}

.model-viewer-wrap {
  background: linear-gradient(135deg, #EBF0F9 0%, #D8E4F5 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  position: relative;
}

model-viewer {
  width: 100%;
  height: 100%;
  display: block;
  --progress-bar-color: var(--blue-bright);
  --progress-bar-height: 3px;
}

.model-viewer-hint {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: rgba(10,20,40,0.45);
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 6px 14px;
  pointer-events: none;
  white-space: nowrap;
}

.model-info { display: flex; flex-direction: column; gap: 24px; }

.model-cat {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--blue-mid);
}
.model-info h1 {
  font-size: 26px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-top: 6px;
}

.model-desc {
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.75;
  white-space: pre-line;
}

.specs-block {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.specs-block h4 {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-2);
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}
.spec-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 11px 18px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.spec-row:last-child { border-bottom: none; }
.spec-key { color: var(--text-2); font-weight: 400; flex-shrink: 0; }
.spec-val { color: var(--text); font-weight: 600; text-align: right; }

/* ─── Responsive ───────────────────────────────────────────── */
@media (max-width: 960px) {
  .welcome-features { grid-template-columns: 1fr 1fr; }
  .welcome-about { flex-direction: column; gap: 32px; }
  .models-grid { grid-template-columns: 1fr 1fr; }
  .model-layout { grid-template-columns: 1fr; }
  .model-viewer-wrap { aspect-ratio: 1; }
}

@media (max-width: 680px) {
  .login-visual { display: none; }
  .login-form-side { width: 100%; padding: 40px 24px; }
  .welcome-features { grid-template-columns: 1fr; }
  .welcome-about-stats { flex-wrap: wrap; gap: 24px; }
  .models-grid { grid-template-columns: 1fr; }
  .pnav-name { display: none; }
  .pnav-inner { gap: 16px; }
  .page-wrap { padding: 0 16px; }
}