:root {
  --bg-main: #07090C;
  --bg-panel: rgba(15, 18, 26, 0.95);
  --bg-card: rgba(22, 27, 38, 0.95);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(255, 255, 255, 0.18);
  --border-red: rgba(235, 0, 41, 0.4);
  
  --swiss-red: #EB0029;
  --swiss-red-glow: rgba(235, 0, 41, 0.35);
  --swiss-red-hover: #ff1a3c;
  
  --color-green: #00E676;
  --color-green-bg: rgba(0, 230, 118, 0.1);
  --color-orange: #FFB300;
  --color-orange-bg: rgba(255, 179, 0, 0.1);
  --color-red: #FF1744;
  --color-red-bg: rgba(255, 23, 68, 0.12);

  --text-primary: #FFFFFF;
  --text-secondary: #A0A5B5;
  --text-muted: #5C6275;

  --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  background-image: 
    radial-gradient(at 0% 0%, rgba(235, 0, 41, 0.12) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(30, 58, 138, 0.1) 0px, transparent 50%),
    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: 100% 100%, 100% 100%, 40px 40px, 40px 40px;
  color: var(--text-primary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ЭКРАН ВХОДА */
#authScreen {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: #050608;
  background-image: 
    radial-gradient(at 50% 40%, rgba(235, 0, 41, 0.18) 0px, transparent 65%),
    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: 100% 100%, 48px 48px, 48px 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.auth-box {
  width: 100%;
  max-width: 440px;
  background: #0e1118;
  border: 1px solid var(--border-glow);
  border-radius: 16px;
  padding: 44px 36px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.95), 0 0 50px rgba(235, 0, 41, 0.25);
  position: relative;
  overflow: hidden;
}

.auth-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--swiss-red), transparent);
}

.auth-logo-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

.auth-badge {
  width: 44px;
  height: 44px;
  background: var(--swiss-red);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 900;
  border-radius: 8px;
  box-shadow: 0 0 25px var(--swiss-red-glow);
}

.auth-title {
  font-size: 26px;
  font-weight: 900;
  letter-spacing: 2.5px;
}

.auth-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 26px;
  line-height: 1.5;
}

.auth-error {
  display: none;
  background: rgba(255, 23, 68, 0.15);
  border: 1px solid var(--color-red);
  color: #ff8095;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 13px;
  margin-bottom: 20px;
}

/* СЕТКА СТРАНИЦЫ */
.app-layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 280px;
  background: var(--bg-panel);
  border-right: 1px solid var(--border-subtle);
  backdrop-filter: blur(16px);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  transition: var(--transition);
}

.brand-header {
  padding: 26px 24px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-badge {
  width: 34px;
  height: 34px;
  background: var(--swiss-red);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 18px;
  border-radius: 6px;
  box-shadow: 0 0 15px var(--swiss-red-glow);
}

.brand-name {
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 2px;
}

.nav-links {
  list-style: none;
  padding: 20px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.nav-item button {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 18px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  border-radius: 10px;
  cursor: pointer;
  transition: var(--transition);
  text-align: left;
}

.nav-item button:hover {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-subtle);
}

.nav-item button.active {
  background: linear-gradient(135deg, rgba(235, 0, 41, 0.15), rgba(255, 255, 255, 0.03));
  border: 1px solid var(--border-red);
  color: #fff;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.user-status-card {
  padding: 16px 20px;
  margin: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* МОБИЛЬНЫЙ ТОПБАР */
.mobile-topbar {
  display: none;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border-subtle);
  padding: 14px 20px;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 120;
  backdrop-filter: blur(12px);
}

.burger-btn {
  background: none;
  border: none;
  color: #fff;
  font-size: 28px;
  cursor: pointer;
  padding: 4px;
}

/* КОНТЕНТ */
.main-viewport {
  flex: 1;
  margin-left: 280px;
  padding: 40px 48px;
  max-width: 1480px;
}

.section-view {
  display: none;
  animation: fadeIn 0.3s ease forwards;
}
.section-view.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-title-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 24px;
  gap: 16px;
}

.page-title {
  font-size: 32px;
  font-weight: 900;
  letter-spacing: -0.5px;
  background: linear-gradient(180deg, #FFFFFF 0%, #A0A5B5 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.page-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 6px;
}

.swiss-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 32px;
  margin-bottom: 28px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(12px);
  position: relative;
}

.dropzone {
  border: 2px dashed var(--border-glow);
  border-radius: 12px;
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.015);
  transition: var(--transition);
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--swiss-red);
  background: rgba(235, 0, 41, 0.05);
  box-shadow: 0 0 30px rgba(235, 0, 41, 0.15);
}

.dropzone-icon {
  font-size: 40px;
  margin-bottom: 12px;
}

.file-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.file-chip {
  background: var(--bg-panel);
  border: 1px solid var(--border-glow);
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 12px;
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-swiss {
  background: var(--swiss-red);
  color: #fff;
  border: none;
  padding: 14px 24px;
  font-weight: 700;
  font-size: 14px;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 20px var(--swiss-red-glow);
}

.btn-swiss:hover {
  background: var(--swiss-red-hover);
  box-shadow: 0 6px 25px rgba(235, 0, 41, 0.5);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-glow);
  padding: 10px 18px;
  font-weight: 600;
  font-size: 13px;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
}

.btn-outline:hover {
  background: var(--bg-card);
  border-color: #fff;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-weight: 600;
}

.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 14px 16px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 14px;
  transition: var(--transition);
}

.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none;
  border-color: var(--swiss-red);
  box-shadow: 0 0 15px rgba(235, 0, 41, 0.25);
}

/* ГРЕЙДЫ */
.grade-banner {
  padding: 24px 28px;
  border-radius: 12px;
  margin-bottom: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.grade-banner.grade-A {
  background: var(--color-green-bg);
  border: 1px solid var(--color-green);
  color: var(--color-green);
}
.grade-banner.grade-B {
  background: var(--color-orange-bg);
  border: 1px solid var(--color-orange);
  color: var(--color-orange);
}
.grade-banner.grade-C {
  background: var(--color-red-bg);
  border: 1px solid var(--color-red);
  color: var(--color-red);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.metric-box {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-subtle);
  padding: 20px;
  border-radius: 10px;
}

.metric-value {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-primary);
  margin-top: 6px;
  font-family: var(--font-mono);
}

.metric-label {
  font-size: 11px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
}

.apartments-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.apt-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.apt-card:hover {
  border-color: var(--border-glow);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.6);
  transform: translateY(-3px);
}

.apt-gallery {
  height: 220px;
  background: #000;
  position: relative;
}

.apt-gallery img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.apt-info {
  padding: 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.apt-price {
  font-size: 22px;
  font-weight: 900;
  color: var(--swiss-red);
  margin-bottom: 6px;
  font-family: var(--font-mono);
}

/* ГАЛЕРЕЯ ФОТО В МОДАЛКЕ */
.photo-manager-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(95px, 1fr));
  gap: 10px;
  margin-top: 10px;
}

.photo-manager-item {
  position: relative;
  height: 80px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  background: #000;
}

.photo-manager-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.photo-badge-cover {
  position: absolute;
  top: 4px;
  left: 4px;
  background: var(--swiss-red);
  color: #fff;
  font-size: 8px;
  font-weight: 800;
  padding: 2px 5px;
  border-radius: 3px;
}

.photo-actions-row {
  position: absolute;
  bottom: 4px;
  right: 4px;
  display: flex;
  gap: 4px;
}

.photo-action-btn {
  background: rgba(0, 0, 0, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  border-radius: 4px;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 12px;
  transition: var(--transition);
}

.photo-action-btn:hover {
  background: #fff;
  color: #000;
}

.photo-action-btn.star-active {
  background: #FFD700;
  color: #000;
  border-color: #FFD700;
}

/* МОДАЛЬНЫЕ ОКНА */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(12px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay.active {
  display: flex;
}

.modal-box {
  background: var(--bg-panel);
  border: 1px solid var(--border-glow);
  border-radius: 14px;
  width: 100%;
  max-width: 660px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 32px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.9);
}

/* ==================== МОЩНАЯ МОБИЛЬНАЯ АДАПТАЦИЯ ==================== */
@media (max-width: 900px) {
  .sidebar {
    transform: translateX(-100%);
    width: 280px;
    box-shadow: 10px 0 40px rgba(0,0,0,0.8);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .mobile-topbar {
    display: flex;
  }
  .main-viewport {
    margin-left: 0;
    padding: 20px 14px;
  }
  .page-title {
    font-size: 24px;
  }
  .page-title-row {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    margin-bottom: 20px;
    padding-bottom: 16px;
  }
  .page-title-row button {
    width: 100%;
    justify-content: center;
  }
  .swiss-card {
    padding: 20px 16px;
    border-radius: 12px;
  }
  .grade-banner {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
    padding: 18px 14px;
  }
  .grade-banner a {
    width: 100%;
    justify-content: center;
  }
  .metrics-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .apartments-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .modal-box {
    padding: 20px 16px;
    max-height: 95vh;
  }
  /* Колонки в калькуляторе и форме в 1 колонку на смартфонах */
  #calculator-view .swiss-card > div[style*="grid-template-columns"],
  form div[style*="grid-template-columns"] {
    grid-template-columns: 1fr !important;
  }
}