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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f5f5f5;
    color: #333;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background: linear-gradient(135deg, #dc143c 0%, #8b0000 100%);
    color: white;
    padding: 1rem 2rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.contenido-header {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo img {
    height: 50px;
    width: auto;
}

.texto-logo {
    font-size: 1.8rem;
    font-weight: bold;
}

nav form {
    display: inline;
}

nav a {
    color: white;
    text-decoration: none;
    margin-left: 2rem;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: background 0.3s;
}

.boton-nav {
    color: white;
    background: transparent;
    border: none;
    cursor: pointer;

    font: inherit;
    display: inline-block;

    text-decoration: none;
    margin-left: 2rem;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: background 0.3s;
}

.boton-nav:hover {
    background: rgba(255,255,255,0.2);
}




nav a:hover {
    background: rgba(255,255,255,0.2);
}

.contenedor {
    flex: 1;
    display: flex;
    width: 100%;
}

.sidebar {
    width: 250px;
    min-width: 250px;
    background: #1a1a1a;
    color: white;
    padding: 2rem 0;
    flex-shrink: 0;
}

.sidebar a {
    display: block;
    color: white;
    text-decoration: none;
    padding: 1rem 2rem;
    transition: all 0.3s;
    border-left: 3px solid transparent;
}

.sidebar a:hover,
.sidebar a.activo {
    background: #dc143c;
    border-left-color: white;
}

main {
    flex: 1;
    padding: 2rem 2rem 4rem;
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
}

.page-header {
    margin-bottom: 2rem;
}

.page-header h1 {
    color: #dc143c;
    margin-bottom: 0.5rem;
}

.grid-tarjetas {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.tarjeta {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.tarjeta:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(220,20,60,0.3);
}


.button-group {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.button-full {
    width: 100%;
}

.texto-centro {
    text-align: center;
}

.margen-superior-1 {
    margin-top: 1rem;
}

.margen-superior-2 {
    margin-top: 2rem;
}

.margen-inferior-1 {
    margin-bottom: 1rem;
}

.margen-inferior-2 {
    margin-bottom: 2rem;
}

.margen-izquierda-1 {
    margin-left: 1rem;
}

.color-gris {
    color: #666;
}

.titulo-tabla {
    margin-bottom: 1rem;
    color: #1a1a1a;
}

.principal-completo {
    width: 100%;
}

.contenedor-tabla {
    background: white;
    border-radius: 10px;
    padding: 1.5rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    background: #1a1a1a;
    color: white;
    padding: 1rem;
    text-align: left;
}

td {
    padding: 1rem;
    border-bottom: 1px solid #eee;
}

tr:hover {
    background: #f9f9f9;
}

.etiqueta {
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: bold;
}

.etiqueta-activo {
    background: #d4edda;
    color: #155724;
}

.etiqueta-pendiente {
    background: #fff3cd;
    color: #856404;
}

.btn {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: #dc143c;
    color: white;
}

.btn-primary:hover {
    background: #b01030;
}

.btn-secondary {
    background: #1a1a1a;
    color: white;
}

.btn-secondary:hover {
    background: #333;
}

.btn-small {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
}

.form-container {
    background: white;
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: #1a1a1a;
    font-weight: 600;
}

input, textarea, select {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: #dc143c;
}

textarea {
    resize: vertical;
    min-height: 120px;
}

.contenedor-login {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a1a1a 0%, #dc143c 100%);
}

.box-login {
    background: white;
    padding: 3rem;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
    width: 100%;
    max-width: 400px;
}

.logo-login {
    text-align: center;
    margin-bottom: 1.5rem;
}

.logo-login img {
    width: 100px;
    height: auto;
}

.titulo-login {
    text-align: center;
    color: #1a1a1a;
    margin-bottom: 2rem;
}

.contenedor-error {
    text-align: center;
    padding: 4rem 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.icono-error {
    font-size: 6rem;
    color: #dc143c;
    margin-bottom: 1rem;
}

.codigo-error {
    font-size: 4rem;
    font-weight: bold;
    color: #1a1a1a;
    margin-bottom: 1rem;
}

.mensaje-error {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 2rem;
}

.tarjeta-evento {
    position: relative;
    overflow: hidden;
}

.encabezado-tarjeta-evento {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    margin-bottom: 1rem;
}

.imagen-evento {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}
.tarjeta-evento:hover h3{
    color: white;
}
.tarjeta-evento:hover .detalles-evento p{
    color: white;
}


.tarjeta-evento:hover .imagen-evento {
    opacity: 1;
}

.contenido-tarjeta-evento {
    position: relative;
    z-index: 2;
}

.detalles-evento {
    margin-top: 1rem;
}

.detalles-evento p {
    margin: 0.5rem 0;
    color: #666;
    font-size: 0.95rem;
}

.tarjeta-completo {
    opacity: 0.7;
}

footer {
    background: #1a1a1a;
    color: white;
    text-align: center;
    padding: 1.5rem;
    margin-top: auto;
}

@media (min-width: 581px) and (max-width: 1024px) {
    .contenido-header {
        padding: 0 1rem;
    }

    .sidebar {
        width: 200px;
        min-width: 200px;
    }

    .sidebar a {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }

    main {
        padding: 1.5rem;
    }

    .grid-tarjetas {
        grid-template-columns: repeat(2, 1fr);
    }

    .logo img {
        height: 40px;
    }

    .texto-logo {
        font-size: 1.5rem;
    }

    nav a {
        margin-left: 1.5rem;
        padding: 0.4rem 0.8rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 580px) {
    header {
        padding: 1rem;
    }

    .logo img {
        height: 35px;
    }

    .texto-logo {
        font-size: 1.3rem;
    }

    nav {
        width: 100%;
    }

    nav a {
        padding: 0.5rem 0.8rem;
        font-size: 0.85rem;
        flex: 1;
        text-align: center;
    }

    .contenedor {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        min-width: 100%;
        padding: 0.5rem 0;
    }

    .sidebar a {
        padding: 0.7rem 1rem;
        font-size: 0.85rem;
    }

    main {
        padding: 1rem 0.5rem;
        padding-bottom: 3rem;
    }

    .page-header h1 {
        font-size: 1.5rem;
    }

    .page-header p {
        font-size: 0.9rem;
    }

    .grid-tarjetas {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .tarjeta {
        padding: 1.2rem;
    }

    .tarjeta h3 {
        font-size: 0.95rem;
    }

    .icono-tarjeta {
        font-size: 1.8rem;
    }

    .numero-tarjeta {
        font-size: 1.3rem;
    }

    .contenedor-tabla {
        padding: 1rem;
        margin: 0 -0.5rem;
    }

    .contenedor-tabla h2 {
        font-size: 1.2rem;
    }

    table {
        font-size: 0.8rem;
    }

    th, td {
        padding: 0.6rem 0.4rem;
    }

    .etiqueta {
        font-size: 0.75rem;
        padding: 0.2rem 0.6rem;
    }

    .btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }

    .btn-small {
        padding: 0.3rem 0.6rem;
        font-size: 0.75rem;
    }

    .form-container {
        padding: 1rem;
        margin: 0;
        max-width: 100%;
    }

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

    label {
        font-size: 0.9rem;
    }

    input, textarea, select {
        padding: 0.7rem;
        font-size: 0.9rem;
    }

    .box-login {
        padding: 1.5rem;
        margin: 0.5rem;
    }

    .logo-login img {
        width: 80px;
    }

    .titulo-login {
        font-size: 1.5rem;
    }

    .contenedor-error {
        padding: 2rem 1rem;
    }

    .codigo-error {
        font-size: 2.5rem;
    }

    .icono-error {
        font-size: 3rem;
    }

    .mensaje-error {
        font-size: 1rem;
    }

    footer {
        padding: 1rem;
        font-size: 0.85rem;
    }
}