/* =========================
   IMPORTAR FUENTE MODERNA
========================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* =========================
   VARIABLES GLOBALES
========================= */

:root{
  --bg-1: #eef3fb;
  --bg-2: #dfe9f5;

  --glass: rgba(255,255,255,0.22);
  --glass-strong: rgba(255,255,255,0.32);

  --border: rgba(255,255,255,0.35);

  --text: #1e293b;
  --text-soft: #64748b;

  --primary: #5b8cff;
  --primary-dark: #4a78e8;

  --success: #3bb78f;
  --danger: #ff6b81;

  --shadow:
    0 10px 35px rgba(31, 38, 135, 0.12);

  --blur: blur(18px);
}

/* =========================
   BODY
========================= */

body {
  font-family: 'Inter', sans-serif;

  background:
    radial-gradient(circle at top left, rgba(255,255,255,0.9), transparent 30%),
    radial-gradient(circle at bottom right, rgba(160,190,255,0.25), transparent 35%),
    linear-gradient(135deg, var(--bg-1), var(--bg-2));

  margin: 0;
  padding: 20px;

  color: var(--text);

  min-height: 100vh;
}

/* =========================
   HEADER
========================= */

header {
  background: var(--glass);

  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);

  border: 1px solid var(--border);

  color: var(--text);

  padding: 28px 20px;

  text-align: center;

  font-size: 1.5rem;
  font-weight: 700;

  border-radius: 28px;

  box-shadow: var(--shadow);

  margin-bottom: 20px;
}

header h1{
  margin: 0;
  font-size: 2rem;
  letter-spacing: 0.4px;
}

/* =========================
   NAV
========================= */

nav {
  display: flex;
  justify-content: center;

  background: var(--glass);

  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);

  padding: 15px;

  gap: 12px;
  flex-wrap: wrap;

  border-radius: 24px;

  border: 1px solid var(--border);

  box-shadow: var(--shadow);

  margin-bottom: 25px;
}

/* =========================
   BOTONES NAV
========================= */

nav button {

  padding: 12px 22px;

  border: 1px solid rgba(255,255,255,0.25);

  background: rgba(255,255,255,0.18);

  backdrop-filter: blur(10px);

  color: var(--text);

  cursor: pointer;

  border-radius: 18px;

  transition: all 0.3s ease;

  font-weight: 600;

  box-shadow:
    0 4px 14px rgba(0,0,0,0.08);
}

nav button:hover {

  transform: translateY(-3px);

  background: linear-gradient(
    135deg,
    var(--primary),
    #7aa8ff
  );

  color: white;

  box-shadow:
    0 10px 20px rgba(91,140,255,0.25);
}

/* =========================
   SECCIONES
========================= */

section {

  display: none;

  padding: 30px;

  max-width: 1050px;

  margin: 20px auto;

  background: var(--glass);

  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);

  border-radius: 30px;

  border: 1px solid var(--border);

  box-shadow: var(--shadow);

  animation: fadeIn 0.4s ease;
}

section.activa {
  display: block;
}

section h2{
  margin-top: 0;
  margin-bottom: 22px;

  font-size: 1.7rem;
  font-weight: 700;
}

/* =========================
   INPUTS
========================= */

input,
select {

  padding: 14px 16px;

  margin: 8px;

  width: 230px;

  border-radius: 16px;

  border: 1px solid rgba(255,255,255,0.25);

  background: rgba(255,255,255,0.16);

  backdrop-filter: blur(10px);

  transition: all 0.25s ease;

  outline: none;

  color: var(--text);

  font-size: 0.95rem;

  box-sizing: border-box;
}

input::placeholder{
  color: var(--text-soft);
}

input:focus,
select:focus {

  border-color: rgba(91,140,255,0.7);

  box-shadow:
    0 0 0 4px rgba(91,140,255,0.15);

  transform: scale(1.01);
}

/* =========================
   BOTONES GENERALES
========================= */

button {

  padding: 12px 18px;

  margin: 6px;

  cursor: pointer;

  border-radius: 16px;

  border: 1px solid rgba(255,255,255,0.2);

  background:
    linear-gradient(
      135deg,
      rgba(91,140,255,0.9),
      rgba(122,168,255,0.85)
    );

  color: white;

  transition: all 0.3s ease;

  font-weight: 600;

  box-shadow:
    0 6px 18px rgba(91,140,255,0.18);
}

button:hover {

  transform: translateY(-2px) scale(1.02);

  box-shadow:
    0 12px 24px rgba(91,140,255,0.28);
}

/* =========================
   TABLAS
========================= */

table {

  width: 100%;

  border-collapse: collapse;

  margin-top: 24px;

  border-radius: 22px;

  overflow: hidden;

  background: rgba(255,255,255,0.14);

  backdrop-filter: blur(12px);
}

th,
td {

  padding: 15px;

  text-align: center;
}

th {

  background:
    linear-gradient(
      135deg,
      rgba(91,140,255,0.9),
      rgba(122,168,255,0.85)
    );

  color: white;

  font-weight: 600;
}

td{
  color: var(--text-soft);
}

tbody tr{

  transition: 0.25s ease;
}

tbody tr:nth-child(even) {

  background: rgba(255,255,255,0.08);
}

tbody tr:hover{

  background: rgba(255,255,255,0.12);

  transform: scale(1.002);
}

/* =========================
   MENSAJES
========================= */

.aprobado {

  background:
    linear-gradient(
      135deg,
      rgba(59,183,143,0.22),
      rgba(59,183,143,0.12)
    );

  color: #1f6d57;

  padding: 16px;

  border-radius: 18px;

  font-weight: 600;

  margin-top: 15px;

  border: 1px solid rgba(59,183,143,0.2);

  backdrop-filter: blur(10px);
}

.rechazado {

  background:
    linear-gradient(
      135deg,
      rgba(255,107,129,0.22),
      rgba(255,107,129,0.12)
    );

  color: #8f2336;

  padding: 16px;

  border-radius: 18px;

  font-weight: 600;

  margin-top: 15px;

  border: 1px solid rgba(255,107,129,0.2);

  backdrop-filter: blur(10px);
}

/* =========================
   CARDS
========================= */

.card {

  background: rgba(255,255,255,0.14);

  padding: 20px;

  border-radius: 24px;

  margin-top: 14px;

  border: 1px solid rgba(255,255,255,0.22);

  backdrop-filter: blur(14px);

  box-shadow:
    0 8px 22px rgba(0,0,0,0.08);
}

/* =========================
   ANIMACIÓN
========================= */

@keyframes fadeIn {

  from {
    opacity: 0;
    transform: translateY(12px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* =========================
   SCROLLBAR
========================= */

::-webkit-scrollbar{
  width: 10px;
}

::-webkit-scrollbar-thumb{
  background: rgba(255,255,255,0.35);
  border-radius: 20px;
}

::-webkit-scrollbar-track{
  background: transparent;
}

/* =========================
   RESPONSIVE TABLET
========================= */

@media (max-width: 768px) {

  body{
    padding: 14px;
  }

  section {

    margin: 10px;

    padding: 20px;
  }

  input,
  select {

    width: 100%;
  }

  nav {

    gap: 8px;
  }

  nav button {

    flex: 1 1 45%;
  }

  table{
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
}

/* =========================
   RESPONSIVE CELULARES
========================= */

@media (max-width: 480px) {

  header {

    padding: 20px 14px;
  }

  header h1{
    font-size: 1.45rem;
  }

  nav {

    flex-direction: column;

    align-items: stretch;
  }

  nav button {

    width: 100%;

    font-size: 0.95rem;

    padding: 14px;
  }

  section {

    margin: 8px;

    padding: 18px;

    border-radius: 24px;
  }

  input,
  select {

    width: 100%;

    margin: 8px 0;

    font-size: 1rem;
  }

  button {

    width: 100%;

    font-size: 1rem;
  }

  th,
  td {

    font-size: 0.9rem;

    padding: 10px;
  }

  .card {

    padding: 16px;
  }

  .aprobado,
  .rechazado {

    font-size: 0.95rem;

    padding: 14px;
  }
}

/* =========================
   MODO OSCURO PREMIUM
========================= */

@media (prefers-color-scheme: dark) {

  :root{

    --bg-1: #0f172a;
    --bg-2: #1e293b;

    --glass: rgba(15,23,42,0.45);

    --glass-strong: rgba(15,23,42,0.55);

    --border: rgba(255,255,255,0.08);

    --text: #f1f5f9;

    --text-soft: #cbd5e1;

    --shadow:
      0 10px 35px rgba(0,0,0,0.35);
  }

  input,
  select,
  .card,
  table{

    background: rgba(255,255,255,0.05);
  }

  tbody tr:nth-child(even){

    background: rgba(255,255,255,0.03);
  }

  tbody tr:hover{

    background: rgba(255,255,255,0.06);
  }
}