@import url("https://fonts.googleapis.com/css2?family=Manrope:wght@300;400;600;700&family=Playfair+Display:wght@600;700&display=swap");

:root {
  --ink: #112959;
  --ink-soft: #2b3b63;
  --emerald: #277740;
  --emerald-dark: #1f5d33;
  --gold: #c6a15b;
  --bg: #f6f7f9;
  --paper: #ffffff;
  --line: #e5e7eb;
  --muted: #6b7280;
  --shadow: 0 12px 30px rgba(17, 41, 89, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Manrope", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, #e9f3ee 0%, transparent 60%),
    radial-gradient(1000px 600px at 110% 10%, #eef1f8 0%, transparent 55%),
    var(--bg);
  padding: 1.5rem;
  min-height: 100vh;
}

h1,
h2 {
  font-family: "Playfair Display", Georgia, serif;
  letter-spacing: 0.3px;
}

h2 {
  color: var(--ink);
  margin: 2.5rem auto 1rem;
  max-width: 1100px;
}

header {
  position: sticky;
  top: 0.75rem;
  z-index: 10;
}

.navbar {
  background: rgba(255, 255, 255, 0.92) !important;
  border: 1px solid var(--line);
  border-radius: 18px;
  margin: 0 auto 2rem;
  max-width: 1100px;
  padding: 0.6rem 1.2rem;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

.nav__list {
  list-style-type: none;
  margin: 0;
  padding: 0;
  text-align: right;
  display: flex;
  flex-wrap: wrap;
}

.nav__link {
  color: var(--emerald);
  font-size: 1.05rem;
  font-weight: 700;
  text-decoration: none;
  background-image: linear-gradient(120deg, rgba(39, 119, 64, 0.2), rgba(198, 161, 91, 0.25));
  background-size: 0 100%;
  background-repeat: no-repeat;
  background-position: 0 100%;
  transition: color 0.3s ease, background-size 0.3s ease;
  padding: 0.2rem 0.1rem;
}

.nav__link:hover {
  color: var(--ink-soft);
  background-size: 100% 100%;
}

.icon {
  height: 70px;
  width: 52px;
  margin-left: 20px;
  margin-top: 6px;
  filter: drop-shadow(0 6px 10px rgba(17, 41, 89, 0.15));
}

.active-link {
  position: relative;
  font-weight: 700;
  color: var(--emerald);
}

.form-container {
  background: var(--paper);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 2rem;
  max-width: 1100px;
  margin: 0 auto 2.5rem;
  border: 1px solid var(--line);
  animation: rise 0.6s ease-out;
}

#formArticulo {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  align-items: center;
}

#formArticulo input[type="text"],
#formArticulo input[type="number"],
#formArticulo select,
#busqueda,
#filtroCategoria {
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  width: 100%;
  font-size: 1rem;
  background-color: #f9fafb;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

#formArticulo input:focus,
#formArticulo select:focus,
#busqueda:focus,
#filtroCategoria:focus {
  outline: none;
  border-color: var(--emerald);
  box-shadow: 0 0 0 3px rgba(39, 119, 64, 0.15);
}

#formArticulo button[type="submit"] {
  grid-column: span 3;
  background-color: var(--emerald);
  color: white;
  border: none;
  padding: 1rem;
  font-size: 1rem;
  font-weight: 700;
  border-radius: 12px;
  cursor: pointer;
  letter-spacing: 0.2px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

#formArticulo button[type="submit"]:hover {
  background-color: var(--emerald-dark);
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(31, 93, 51, 0.18);
}

.inventario-container {
  margin: 0 auto 2rem;
  max-width: 1100px;
  background-color: var(--paper);
  padding: 1.6rem;
  border-radius: 18px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  animation: rise 0.7s ease-out;
}

.filtro-categoria {
  margin-bottom: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  color: var(--muted);
}

.filtro-categoria label {
  font-weight: 600;
  color: var(--ink);
}

.table {
  margin-top: 1rem;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
}

#tablaArticulos {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

#tablaArticulos thead th {
  background: linear-gradient(135deg, #122a5f 0%, #1e3a8a 100%);
  color: #fff;
  padding: 0.85rem;
  font-weight: 700;
  border-bottom: 1px solid var(--line);
}

#tablaArticulos tbody td {
  padding: 0.8rem;
  border-bottom: 1px solid var(--line);
}

#tablaArticulos tbody tr:hover {
  background: #f0f5ff;
}

.btn {
  border-radius: 10px;
  font-weight: 600;
  padding: 0.55rem 1.1rem;
  box-shadow: 0 10px 20px rgba(17, 41, 89, 0.12);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:disabled {
  box-shadow: none;
  opacity: 0.7;
}

.btn:not(:disabled):hover {
  transform: translateY(-1px);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  body {
    padding: 1rem;
  }

  .navbar {
    margin: 0 0 1.5rem;
  }

  #formArticulo {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  #formArticulo button[type="submit"] {
    grid-column: span 2;
  }

  h2 {
    margin: 2rem 0 1rem;
  }
}

@media (max-width: 640px) {
  #formArticulo {
    grid-template-columns: 1fr;
  }

  #formArticulo button[type="submit"] {
    grid-column: span 1;
  }

  .navbar {
    padding: 0.6rem 0.8rem;
  }

  .icon {
    margin-left: 6px;
  }
}