/* 
  Estilos Base - Vanilla CSS
  Diseño moderno, limpio, con tonos pastel verde suave y azul.
  Resolución 100% responsiva (Móviles, Tablets y Escritorios).
*/

:root {
    --color-primary: #3b82f6; /* Azul moderno */
    --color-primary-hover: #2563eb;
    --color-secondary: #10b981; /* Verde esmeralda/pastel */
    --color-bg-light: #f3f4f6; /* Gris muy claro - Fondo app */
    --color-surface: #ffffff;
    --color-text-main: #1f2937;
    --color-text-muted: #6b7280;
    --glass-bg: rgba(255, 255, 255, 0.85);
    
    --border-radius-lg: 12px;
    --border-radius-sm: 8px;
    --transition-speed: 0.3s;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body.login-body {
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--color-bg-light);
    overflow: hidden;
    position: relative;
}

/* Background dinámico del Login */
.dynamic-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* Marcador genérico inicial hasta que la API envíe el real */
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, rgba(59, 130, 246, 0.4) 100%), 
                url('https://images.unsplash.com/photo-1550751827-4bd374c3f58b?ixlib=rb-1.2.1&auto=format&fit=crop&w=1950&q=80');
    background-size: cover;
    background-position: center;
    filter: blur(4px);
    z-index: -1;
    transform: scale(1.05); /* Oculta bordes al hacer blur */
}

/* Contenedor del Login con Glassmorphism */
.login-container {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.3);
    padding: 40px;
    border-radius: var(--border-radius-lg);
    width: 100%;
    max-width: 420px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    text-align: center;
    animation: fadeIn 0.8s ease-out;
}

.brand img {
    max-width: 220px;
    margin-bottom: 20px;
}

.login-container h2 {
    color: var(--color-text-main);
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.subtitle {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-bottom: 30px;
}

/* Formulario */
.input-group {
    position: relative;
    margin-bottom: 20px;
}

.input-group i {
    position: absolute;
    top: 50%;
    left: 15px;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    font-size: 1.2rem;
}

.input-group input, .input-group select {
    width: 100%;
    padding: 14px 15px 14px 45px;
    border: 1px solid #d1d5db;
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    outline: none;
    transition: all var(--transition-speed);
}

.input-group select {
    appearance: none;
    -webkit-appearance: none;
    background: #fff;
    cursor: pointer;
}

.input-group input:focus, .input-group select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* Botón Primary */
.btn-primary {
    width: 100%;
    padding: 14px;
    background-color: var(--color-secondary); /* Verde pastel/esmeralda para botones principales */
    color: white;
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-speed);
}

.btn-primary:hover {
    background-color: #059669; /* Verde más oscuro al hover */
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.footer-links {
    margin-top: 25px;
}

.footer-links a {
    color: var(--color-primary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
}

.footer-links a:hover {
    text-decoration: underline;
}

/* Animaciones */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Diseño 100% Responsivo */
@media screen and (max-width: 480px) {
    .login-container {
        padding: 30px 20px;
        margin: 20px;
        max-width: 100%;
    }
}