@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,500;0,600;0,700;1,500&family=Source+Sans+3:wght@400;500;600&display=swap');

:root {
  --leo-ink: #4a3428;
  --leo-ink-soft: #6b5344;
  --leo-sepia: #8b6914;
  --leo-umber: #5c4033;
  --leo-sienna: #7a4a32;
  --leo-parchment: #f3ead6;
  --leo-parchment-deep: #e8d9bc;
  --leo-parchment-edge: #d4c3a3;
  --leo-cream: #faf6eb;
  --leo-line: rgba(74, 52, 40, 0.14);
  --leo-shadow: rgba(74, 52, 40, 0.08);
  --leo-accent: #6e4b35;
  --leo-accent-hover: #553828;
  --leo-font-display: "Cormorant Garamond", "Palatino Linotype", Palatino, serif;
  --leo-font-body: "Source Sans 3", "Segoe UI", sans-serif;
}

html {
  font-size: 15px;
  position: relative;
  min-height: 100%;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

body {
  margin: 0;
  margin-bottom: 70px;
  min-height: 100vh;
  color: var(--leo-ink);
  font-family: var(--leo-font-body);
  background-color: var(--leo-cream);
  background-image: linear-gradient(
    165deg,
    #faf6eb 0%,
    #f3ead6 48%,
    #ebe0c8 100%
  );
  background-attachment: fixed;
}

/* Dibujo muy suave: se intuye, no compite con el contenido */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: url('/img/leonardo-ornithopter.png');
  background-repeat: no-repeat;
  background-position: center 40%;
  background-size: min(960px, 90vw);
  opacity: 0.04;
  filter: sepia(0.4) contrast(0.9) brightness(1.05);
}

body > * {
  position: relative;
  z-index: 1;
}

h1, h2, h3, h4, h5, .navbar-brand, .display-6 {
  font-family: var(--leo-font-display);
  color: var(--leo-umber);
  letter-spacing: 0.01em;
}

.navbar-brand {
  font-size: 1.55rem;
  font-weight: 700;
  color: var(--leo-umber) !important;
  transition: color 0.25s ease, transform 0.25s ease;
}

.navbar-brand:hover {
  color: var(--leo-sienna) !important;
  transform: translateY(-1px);
}

.leo-nav {
  background: rgba(250, 246, 235, 0.82) !important;
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--leo-line) !important;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.5), 0 8px 24px var(--leo-shadow) !important;
}

.leo-nav .nav-link {
  color: var(--leo-ink-soft) !important;
  font-weight: 500;
  border-radius: 0.35rem;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.leo-nav .nav-link:hover {
  color: var(--leo-umber) !important;
  background-color: rgba(110, 75, 53, 0.08);
}

.leo-main {
  animation: leo-fade-up 0.55s ease both;
}

@keyframes leo-fade-up {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.btn-primary {
  --bs-btn-bg: var(--leo-accent);
  --bs-btn-border-color: var(--leo-accent);
  --bs-btn-hover-bg: var(--leo-accent-hover);
  --bs-btn-hover-border-color: var(--leo-accent-hover);
  --bs-btn-active-bg: var(--leo-accent-hover);
  --bs-btn-active-border-color: var(--leo-accent-hover);
  --bs-btn-color: #faf6eb;
  letter-spacing: 0.02em;
}

.btn-outline-primary {
  --bs-btn-color: var(--leo-accent);
  --bs-btn-border-color: var(--leo-accent);
  --bs-btn-hover-bg: var(--leo-accent);
  --bs-btn-hover-border-color: var(--leo-accent);
  --bs-btn-hover-color: #faf6eb;
}

.btn-outline-secondary {
  --bs-btn-color: var(--leo-ink-soft);
  --bs-btn-border-color: var(--leo-parchment-edge);
  --bs-btn-hover-bg: rgba(110, 75, 53, 0.08);
  --bs-btn-hover-border-color: var(--leo-ink-soft);
  --bs-btn-hover-color: var(--leo-umber);
}

.btn-outline-success {
  --bs-btn-color: #3f5d3a;
  --bs-btn-border-color: #7d9470;
  --bs-btn-hover-bg: #3f5d3a;
  --bs-btn-hover-border-color: #3f5d3a;
}

.btn-outline-danger {
  --bs-btn-color: #8a3b32;
  --bs-btn-border-color: #c28a82;
  --bs-btn-hover-bg: #8a3b32;
  --bs-btn-hover-border-color: #8a3b32;
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus, .form-select:focus {
  box-shadow: 0 0 0 0.15rem rgba(110, 75, 53, 0.22);
}

.form-control, .form-select {
  background-color: rgba(255, 252, 245, 0.9);
  border-color: var(--leo-parchment-edge);
  color: var(--leo-ink);
}

.form-control:focus, .form-select:focus {
  background-color: #fffdf8;
  border-color: var(--leo-sienna);
  color: var(--leo-ink);
}

.table {
  --bs-table-bg: rgba(255, 252, 245, 0.55);
  --bs-table-striped-bg: rgba(232, 217, 188, 0.28);
  --bs-table-hover-bg: rgba(110, 75, 53, 0.06);
  border-color: var(--leo-line);
  color: var(--leo-ink);
}

.table thead th {
  font-family: var(--leo-font-display);
  font-weight: 600;
  color: var(--leo-umber);
  border-bottom-color: var(--leo-parchment-edge);
}

.border, .border.rounded, .card, .alert {
  border-color: var(--leo-line) !important;
}

.border.rounded, .card {
  background: rgba(255, 252, 245, 0.72);
  backdrop-filter: blur(4px);
  box-shadow: 0 10px 30px var(--leo-shadow);
}

.alert-success {
  background-color: rgba(120, 140, 100, 0.18);
  border-color: rgba(90, 110, 70, 0.25);
  color: #3d4f35;
}

.alert-danger {
  background-color: rgba(160, 80, 70, 0.12);
  border-color: rgba(140, 70, 60, 0.22);
  color: #6e342c;
}

.alert-info, .alert-light {
  background-color: rgba(232, 217, 188, 0.45);
  border-color: var(--leo-line);
  color: var(--leo-ink-soft);
}

.badge.text-bg-success { background-color: #5f7354 !important; }
.badge.text-bg-warning { background-color: #b0893f !important; color: #fff !important; }
.badge.text-bg-info { background-color: #6d7f8c !important; }
.badge.text-bg-danger { background-color: #8a4a40 !important; }
.badge.text-bg-secondary { background-color: #8a7a68 !important; }

.text-muted {
  color: var(--leo-ink-soft) !important;
}

a {
  color: var(--leo-sienna);
}

a:hover {
  color: var(--leo-accent-hover);
}

.footer {
  position: absolute;
  bottom: 0;
  width: 100%;
  white-space: nowrap;
  line-height: 60px;
  background: rgba(250, 246, 235, 0.75);
  border-top: 1px solid var(--leo-line) !important;
  color: var(--leo-ink-soft) !important;
  backdrop-filter: blur(6px);
}

.footer a {
  color: var(--leo-sienna);
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

/* Welcome / AccessDenied */
.welcome-container {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: leo-fade-up 0.65s ease both;
}

.welcome-card {
  max-width: 500px;
  width: 100%;
  border-radius: 1rem;
  overflow: hidden;
  background: rgba(255, 252, 245, 0.88);
  border: 1px solid var(--leo-line);
  box-shadow: 0 18px 50px rgba(74, 52, 40, 0.12);
}

.welcome-header {
  background:
    linear-gradient(145deg, rgba(92, 64, 51, 0.94) 0%, rgba(122, 74, 50, 0.9) 100%);
  color: #faf6eb;
  padding: 2.75rem 2rem;
  text-align: center;
}

.welcome-header h2 {
  color: #faf6eb;
  font-family: var(--leo-font-display);
}

.welcome-icon {
  font-size: 3.5rem;
  margin-bottom: 0.75rem;
  opacity: 0.92;
}

.form-floating > .form-control-plaintext::placeholder,
.form-floating > .form-control::placeholder {
  color: var(--bs-secondary-color);
  text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder,
.form-floating > .form-control:focus::placeholder {
  text-align: start;
}

/* Chat */
.leo-chat-theme {
  min-width: min(280px, 100%);
}

.leo-chat-shell {
  background: rgba(255, 252, 245, 0.75);
  border: 1px solid var(--leo-line);
  border-radius: 1rem;
  box-shadow: 0 12px 36px var(--leo-shadow);
  padding: 1rem;
  backdrop-filter: blur(4px);
}

.leo-chat-messages {
  height: min(58vh, 520px);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 0.5rem 0.25rem 1rem;
}

.leo-chat-bubble {
  max-width: min(85%, 640px);
  padding: 0.85rem 1rem;
  border-radius: 0.85rem;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
}

.leo-chat-meta {
  font-family: var(--leo-font-display);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  opacity: 0.8;
}

.leo-chat-user {
  align-self: flex-end;
  background: rgba(110, 75, 53, 0.12);
  border: 1px solid rgba(110, 75, 53, 0.18);
  color: var(--leo-ink);
}

.leo-chat-assistant {
  align-self: flex-start;
  background: rgba(250, 246, 235, 0.95);
  border: 1px solid var(--leo-line);
  color: var(--leo-ink);
}

.leo-chat-typing {
  font-style: italic;
  opacity: 0.75;
}

.leo-chat-sources {
  margin-top: 0.75rem;
  padding-top: 0.65rem;
  border-top: 1px dashed var(--leo-line);
  font-size: 0.82rem;
  color: var(--leo-ink-soft);
}

.leo-chat-sources a {
  color: var(--leo-sienna);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.leo-chat-sources a:hover {
  color: var(--leo-accent-hover);
}


.leo-chat-composer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.75rem;
  align-items: end;
  border-top: 1px solid var(--leo-line);
  padding-top: 0.85rem;
}

@media (max-width: 576px) {
  .leo-chat-composer {
    grid-template-columns: 1fr;
  }
}