/* style.css - tema blanco/rojo elegante */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;700&display=swap');

:root {
  --brand-red: #c40b0b;
  --light-bg: #f9f9f9;      /* blanco suave */
  --card-bg: #ffffff;        /* blanco para tarjetas */
  --text-dark: #1c1c1c;      /* texto principal */
  --text-muted: #555555;     /* texto secundario */
  --border-color: #e0e0e0;   /* bordes suaves */
  --shadow: rgba(0,0,0,0.08);
}

*{ box-sizing:border-box; }
body{
  margin:0;
  font-family:'Poppins',sans-serif;
  background: var(--light-bg);
  color: var(--text-dark);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

.site-header .header-image{
  height:200px;
  background: linear-gradient(90deg, rgba(196,11,11,0.9), rgba(255,255,255,0.05));
  display:flex;
  align-items:center;
  justify-content:center;
  position:relative;
  overflow:hidden;
}
.site-header .header-image::after{
  content:'';
  position:absolute;
  inset:0;
  background: linear-gradient(180deg, rgba(255,255,255,0.1), rgba(255,255,255,0.3));
}
.header-overlay{
  position:relative;
  z-index:2;
  text-align:center;
}
.header-overlay h1{
  margin:0;
  font-size:2.2rem;
  letter-spacing:1px;
  font-weight:700;
  color: var(--brand-red);
  text-transform:uppercase;
}
.header-overlay p{
  color: var(--text-muted);
  margin-top:6px;
}

.container-card{
  background: var(--card-bg);
  border-radius:14px;
  padding:28px;
  box-shadow:0 8px 30px var(--shadow);
  border: 1px solid var(--border-color);
}

/* Botones rojos */
.btn-danger{
  background: var(--brand-red);
  border: 1px solid var(--brand-red);
  color: #fff;
}
.btn-danger:hover{
  transform:translateY(-2px);
  box-shadow:0 10px 30px rgba(196,11,11,0.2);
}

/* Botón login negro */
.btn-outline-light.btn-login {
  background: #1c1c1c;                     /* negro elegante */
  color: #fff;                             /* texto blanco */
  border: 1px solid var(--brand-red);      /* borde rojo */
  transition: all 0.2s ease;
}

.btn-outline-light.btn-login:hover {
  background: #000;                        /* negro más intenso */
  color: #fff;
  box-shadow: 0 6px 15px rgba(196,11,11,0.3); /* sombra roja sutil */
  transform: translateY(-2px);
}

/* Formularios */
input.form-control, textarea.form-control {
  background:#fff;
  border:1px solid #ddd;
  color: var(--text-dark);
}
input.form-control:focus, textarea.form-control:focus {
  box-shadow:0 6px 18px rgba(196,11,11,0.12);
  border-color: var(--brand-red);
  outline: none;
}

/* Sidebar panel */
.sidebar {
  width:240px;
  background: #ffffff;
  min-height:100vh;
  position:fixed;
  left:0;
  top:0;
  padding-top:28px;
  border-right:1px solid var(--border-color);
}
.sidebar .nav-link{
  color: var(--text-dark);
  padding:12px 20px;
  display:block;
  transition:all .15s ease;
}
.sidebar .nav-link:hover{
  background: rgba(196,11,11,0.08);
  color: var(--brand-red);
}

.main-content{
  margin-left:260px;
  padding:30px;
}

/* tables */
.table thead th{ 
  color: var(--text-dark);
  border-bottom:1px solid var(--border-color); 
}
.table tbody tr{ 
  background:transparent; 
}

/* small screens */
@media (max-width:800px){
  .sidebar{ position:relative; width:100%; min-height:auto;}
  .main-content{ margin-left:0; padding:15px;}
}