/* ═══════════════════════════════════════════════
   LAYOUT — App Shell, Header, Footer, Panels
═══════════════════════════════════════════════ */

/* ── App Shell ── */
#app {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  width: 100vw;
}

/* ── Header ── */
#header {
  height: var(--header-h);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  background: linear-gradient(180deg, rgba(5,8,22,0.95) 0%, rgba(5,8,22,0.7) 100%);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: relative;
  z-index: 100;
}

/* Линия свечения под хедером */
#header::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--violet), transparent);
  opacity: 0.5;
}

/* ── Logo ── */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
  cursor: pointer;
}
.logo:hover .logo-main {
  text-shadow: 0 0 28px var(--cyan), 0 0 56px rgba(63,210,255,0.5);
}
.logo-icon {
  width: 36px; height: 36px;
  position: relative;
}
.logo-icon svg {
  width: 100%; height: 100%;
}
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}
.logo-main {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.05em;
  text-shadow: 0 0 20px var(--cyan), 0 0 40px rgba(63,210,255,0.3);
}
.logo-sub {
  font-family: var(--font-ui);
  font-size: 9px;
  font-weight: 500;
  color: var(--cyan);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-top: 2px;
  opacity: 0.9;
}

/* ── Header Nav ── */
.header-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-tab {
  position: relative;
  padding: 8px 16px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: color var(--t-base), background var(--t-base);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 7px;
}
.nav-tab .tab-icon {
  width: 16px; height: 16px;
  opacity: 0.7;
  transition: opacity var(--t-base);
}
.nav-tab:hover {
  color: var(--text-primary);
  background: var(--cyan-glow-sm);
}
.nav-tab:hover .tab-icon { opacity: 1; }

.nav-tab.active {
  color: var(--cyan);
  background: var(--cyan-glow);
}
.nav-tab.active .tab-icon { opacity: 1; }

/* Подсветка снизу активного таба */
.nav-tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 8px; right: 8px;
  height: 2px;
  background: var(--cyan);
  border-radius: 1px;
  box-shadow: 0 0 8px var(--cyan), 0 0 16px rgba(63,210,255,0.5);
}

/* Бейдж-счётчик на табе */
.tab-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  background: var(--violet);
  color: white;
  font-size: 10px;
  font-weight: 700;
  border-radius: 9px;
  box-shadow: 0 0 8px var(--violet-glow);
}

/* ── Main content ── */
#main {
  flex: 1;
  overflow: hidden;
  position: relative;
}

/* Tab panels */
.tab-panel {
  display: none;
  width: 100%;
  height: 100%;
  position: relative;
}
.tab-panel.active {
  display: flex;
  animation: tabPanelIn 0.25s ease-out;
}

/* ── Footer ── */
#footer {
  height: var(--footer-h);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: linear-gradient(0deg, rgba(5,8,22,0.95) 0%, rgba(5,8,22,0.6) 100%);
  border-top: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: relative;
  z-index: 100;
  padding: 0 20px;
}
#footer::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--violet), var(--cyan), transparent);
  opacity: 0.4;
}

.footer-nav-tabs {
  display: flex;
  align-items: center;
  gap: 4px;
}
.footer-tab {
  padding: 6px 14px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-dim);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--t-base);
}
.footer-tab:hover {
  color: var(--text-secondary);
  border-color: var(--border);
}
.footer-tab.active {
  color: var(--cyan);
  border-color: var(--cyan-dim);
  background: var(--cyan-glow-sm);
}

/* Language switcher */
.lang-switcher {
  position: absolute;
  right: 24px;
  display: flex;
  align-items: center;
  gap: 2px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 3px;
}
.lang-btn {
  padding: 3px 10px;
  border: none;
  background: transparent;
  color: var(--text-dim);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  cursor: pointer;
  border-radius: 4px;
  transition: all var(--t-base);
}
.lang-btn.active {
  background: var(--cyan-glow);
  color: var(--cyan);
}

/* ── Placeholder panels (заглушки вкладок) ── */
.placeholder-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  gap: 12px;
  opacity: 0.3;
}
.placeholder-panel svg {
  width: 64px; height: 64px;
  color: var(--cyan);
  animation: float 4s ease-in-out infinite;
}
.placeholder-panel h2 {
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--text-primary);
}
.placeholder-panel p {
  font-family: var(--font-ui);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

/* ── Баннер переданного питомца на вкладке «Прогноз вязки» ── */
.breeding-preset-banner {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: rgba(13,22,48,0.85);
  border: 1px solid rgba(63,210,255,0.25);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.4), 0 0 12px rgba(63,210,255,0.1);
  animation: slideInDown 0.25s ease-out;
  opacity: 1;
  z-index: 10;
}
.breeding-preset-label {
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.breeding-preset-name {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 700;
}
.breeding-preset-ems {
  font-family: var(--font-ui);
  font-size: 11px;
  color: var(--violet);
  font-weight: 600;
}
.breeding-preset-clear {
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 13px;
  padding: 2px 4px;
  border-radius: 4px;
  transition: color var(--t-base);
}
.breeding-preset-clear:hover { color: var(--red); }