:root {
  /* Fondos principales */
  --c-warm-white: #F5F5F2;
  --c-soft-beige: #D8D3C7;
  --c-stone-light-gray: #E7E4DE;
  --c-warm-gray: #3a3a3a;

  /* Acentos oscuros */
  --c-matte-black: #080808;
  --c-anthracite: #1C1C1C;
  --c-dark-card: #2a2a2a;

  /* Color corporativo */
  --c-electric-blue: #009DFF;
  --c-deep-blue: #005B96;
  
  --c-danger: #e74c3c;

  /* Typographic */
  --font-display: 'Playfair Display', serif;
  --font-body: 'Inter', sans-serif;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--c-matte-black);
  color: var(--c-warm-white);
  line-height: 1.6;
}

.app-header {
  background-color: rgba(28, 28, 28, 0.9);
  backdrop-filter: blur(10px);
  color: var(--c-warm-white);
  padding: 0.8rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--c-warm-gray);
}

.header-inner {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--c-warm-white);
}
.logo .subtitle {
  color: var(--c-electric-blue);
  font-size: 1.2rem;
}

.header-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
}

.header-nav .btn-nav {
  background: transparent;
  border: none;
  color: #a0a0a0;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.2s;
  text-decoration: none;
  cursor: pointer;
  font-size: 0.9rem;
}

.header-nav .btn-nav:hover, .header-nav .btn-nav.active {
  background: rgba(255,255,255,0.05);
  color: var(--c-electric-blue);
}

.header-actions {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 1rem;
}

.container {
  max-width: 1400px;
  margin: 2rem auto;
  padding: 0 2rem;
}

.layout {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: 2rem;
}

.card {
  background: var(--c-dark-card);
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  color: var(--c-electric-blue);
  border-bottom: 1px solid var(--c-warm-gray);
  padding-bottom: 0.5rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  color: var(--c-soft-beige);
}

.form-control {
  width: 100%;
  padding: 0.7rem;
  border: 1px solid var(--c-warm-gray);
  border-radius: 4px;
  background: var(--c-anthracite);
  color: var(--c-warm-white);
  font-family: var(--font-body);
  transition: border-color 0.3s;
}

.form-control:focus {
  outline: none;
  border-color: var(--c-electric-blue);
}

.divider {
  border: 0;
  border-top: 1px solid var(--c-stone-light-gray);
  margin: 1.5rem 0;
}

.budget-summary h3 {
  font-family: var(--font-display);
  margin-bottom: 1rem;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

.summary-row.total {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--c-electric-blue);
  border-top: 2px solid var(--c-warm-gray);
  padding-top: 0.5rem;
  margin-top: 0.5rem;
}

.btn {
  padding: 0.7rem 1.2rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--font-body);
  font-weight: 600;
  transition: all 0.2s;
}

.btn-primary { background: var(--c-electric-blue); color: white; }
.btn-primary:hover { background: var(--c-deep-blue); }

.btn-secondary { background: var(--c-soft-beige); color: var(--c-matte-black); }
.btn-secondary:hover { background: var(--c-warm-gray); }

.btn-outline { background: transparent; border: 1px solid var(--c-electric-blue); color: var(--c-electric-blue); }
.btn-outline:hover { background: var(--c-electric-blue); color: white; }

.btn-danger { background: var(--c-danger); color: white; padding: 0.4rem 0.8rem; font-size: 0.8rem;}

.search-bar {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
}

.catalog-list {
  max-height: 250px;
  overflow-y: auto;
  border: 1px solid var(--c-stone-light-gray);
  border-radius: 4px;
}

.catalog-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.8rem;
  border-bottom: 1px solid var(--c-warm-gray);
  transition: background 0.2s;
}
.catalog-item:hover {
  background: var(--c-anthracite);
}
.catalog-item:last-child { border-bottom: none; }

.catalog-item-info strong { display: block; font-size: 0.95rem; color: var(--c-electric-blue); }
.catalog-item-info span { font-size: 0.85rem; color: #a0a0a0; }

.budget-category {
  margin-bottom: 2rem;
}

.budget-category h3 {
  background: var(--c-anthracite);
  padding: 0.5rem 1rem;
  border-radius: 4px;
  margin-bottom: 1rem;
  font-family: var(--font-display);
  color: var(--c-soft-beige);
}

.budget-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr auto;
  gap: 1rem;
  align-items: center;
  padding: 0.8rem;
  border-bottom: 1px solid var(--c-warm-gray);
}
.budget-row.header {
  font-weight: bold;
  border-bottom: 2px solid var(--c-warm-gray);
  color: var(--c-soft-beige);
}

.budget-row input {
  width: 100%;
  padding: 0.4rem;
  border: 1px solid var(--c-warm-gray);
  border-radius: 4px;
  background: var(--c-anthracite);
  color: var(--c-warm-white);
}

.modal {
  display: none;
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.modal-content {
  width: 500px;
  max-width: 90%;
  position: relative;
  background: var(--c-dark-card);
  color: var(--c-warm-white);
}

.close-modal {
  position: absolute;
  top: 1rem; right: 1.5rem;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--c-warm-white);
}

.mb-4 { margin-bottom: 1rem; }
.mt-2 { margin-top: 0.5rem; }

/* Toast Notifications */
#toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  z-index: 9999;
}

.toast {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1rem 1.5rem;
  background: var(--c-anthracite);
  color: var(--c-warm-white);
  border-radius: 8px;
  box-shadow: 0 8px 16px rgba(0,0,0,0.5);
  font-family: var(--font-body);
  font-weight: 500;
  border-left: 4px solid var(--c-warm-gray);
  transform: translateX(120%);
  opacity: 0;
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.3s ease;
}

.toast.show {
  transform: translateX(0);
  opacity: 1;
}

.toast-success { border-left-color: #2ecc71; }
.toast-success .material-symbols-outlined { color: #2ecc71; }

.toast-error { border-left-color: var(--c-danger); }
.toast-error .material-symbols-outlined { color: var(--c-danger); }

/* Animaciones y utilidades */
.fade-in {
  animation: fadeIn 0.4s ease forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.4rem;
  border-radius: 4px;
}

/* Badges de Estado */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
}
.badge-draft { background: rgba(160, 160, 160, 0.2); color: #a0a0a0; border: 1px solid #a0a0a0; }
.badge-sent { background: rgba(0, 157, 255, 0.2); color: var(--c-electric-blue); border: 1px solid var(--c-electric-blue); }
.badge-accepted { background: rgba(46, 204, 113, 0.2); color: var(--c-success); border: 1px solid var(--c-success); }
.badge-rejected { background: rgba(231, 76, 60, 0.2); color: var(--c-danger); border: 1px solid var(--c-danger); }